Satya Narayan Naik - Academia.edu (original) (raw)
Papers by Satya Narayan Naik
BioResources
The continuous depletion of forests calls for the astute usage of existing resources. Fungi and t... more The continuous depletion of forests calls for the astute usage of existing resources. Fungi and termites cause serious damage to biomass under storage and service conditions. Various protective treatments with high amounts of toxic chemicals are used by the wood and bamboo industry. Efforts are being made the world over to develop environmentally friendly preservatives for wood and bamboo species. Recent research highlights the potential and effectiveness of traditional practices and procedures, mainly water leaching technique and smoke treatment. Under laboratory conditions, the service life of treated blocks were found to be at a par with commercial chemical preservative treated blocks. Various plant extracts and oil-based formulations, such as organic acids, essential oils, and eco-friendly chemical-based preservatives, are in the stage of development. The bio-efficacy of such preservatives is measured in terms of the improvement in resistance to fungi and termites. However, much...
Handbook of Solid Waste Management
Clean Technologies and Environmental Policy, 2020
The emerging demand of natural indigo dye due to the environmental and sociological concerns impa... more The emerging demand of natural indigo dye due to the environmental and sociological concerns imparted by the synthetic dye helps in leveraging the conventional natural indigo dye production process in many developing countries, including India. Despite having remarkable global market potential, the high price of natural indigo dye impedes its extensive commercialization. Therefore, in the present study, the economics of natural indigo dye is evaluated through life cycle cost (LCC) analysis by considering the traditional indigo dye production process in India using the plant biomass Indigofera tinctoria L. The life cycle model includes cultivation of Indigofera biomass, as well as the production and processing of indigo dye and the cost involved in each step. Along with the detailed cost analysis, the present study also includes socioeconomic analysis and possibilities of cost reduction based on the outcome of sensitivity analysis. From the LCC analysis, the life cycle cost of Indigofera biomass cultivation is 420.74ha−1year−1,whereastheindigodyeproductioncostis420.74 ha −1 year −1 , whereas the indigo dye production cost is 420.74ha−1year−1,whereastheindigodyeproductioncostis113 ton −1 of Indigofera biomass. For an annual dye production of 1000 tons, the present study estimated the economic stabilization of rural farmers and labours by an annual employment generation of 196,250 man-days year −1 and 12,50,000 man-days year −1 , respectively. By sensitivity analysis, the raw material price was identified as the major contributor in the total indigo dye production cost. As a cost reduction measure, the combination of biomass yield (70 tons) and reduction in the biomass production cost (50%) was found to be suitable. Utilization of by-product generated from the dye industry into value-added products could contribute towards a cost reduction of 22% in the Indigofera biomass cultivation and a cost saving of $37.4 ton −1 of biomass in the indigo dye production cost.
Journal of Food Processing and Preservation, 2018
In the present study, we aimed to improve the quality of wheat flour biscuits by amending defatte... more In the present study, we aimed to improve the quality of wheat flour biscuits by amending defatted sesame cake. Fifty per cent incorporation of defatted white sesame and black sesame into biscuits improved protein, fat, crude fiber, mineral, and reduced the carbohydrate level. The textural attributes and color characteristics of the white sesame-amended biscuits (WSB) were similar to that of the control biscuits. WSB scored highest upon subjecting to sensory evaluation over black sesame-amended biscuits (BSB) and panelists scored them equal to the control biscuits. The likability of WSB was also revealed in consumer preference survey. Both WSB and BSB fortification improves the storability of biscuits by reducing the microbial contamination. Also the aqueous and methanolic extracts of 90-day stored biscuits were non-toxic to cell line (L929). Hence, it is proposed that defatted sesame cake incorporation enhances the nutritional and functional characteristics of biscuits and is also safe to consume.
Bioresource Technology, 2020
Utilization and re-use of solid and liquid waste generated from the natural indigo dye production... more Utilization and re-use of solid and liquid waste generated from the natural indigo dye production process-A zero waste approach,
Journal of Food Science and Technology, 2018
Rheological characteristics of Desi ghee were investigated at 18, 24, 30 and 36°C. The steady she... more Rheological characteristics of Desi ghee were investigated at 18, 24, 30 and 36°C. The steady shear properties were evaluated by varying the shear rate from 0.01 to 100 s-1 and the dynamic shear properties were studied by varying strain and frequency sweep from 0.01 to 100% and 0.1 to 100 rad s-1 , respectively. At the four selected temperatures, the ghee samples displayed non-Newtonian shear thinning behavior with flow behavior index (n) ranging from 0.224 to 0.911. As the shear rate increased from 0 to 100 s-1 , the values of dynamic viscosity decreased from 54 to 8.14, 20.01 to 1.05, 1.33 to 0.295, and 3.02 to 0.0025 Pa s at 18, 24, 30 and 36°C, respectively. Out of four rheological models (Power-law or Ostwald-de Waele, Herschel-Bulkley, Casson, and Bingham model) fitted to the shear rate and stress data, the Ostwald model was found to be superior in predicting the shear rate-stress data at 18°C, whereas Ostwald-de Waele and Herschel-Bulkley models predicted all the data points over the temperature range of 24-30°C, as observed by the values of coefficient of determination (R 2), standard deviation (SD), and relative deviation percentage (R d). The value of activation energy (E A), as calculated from Arrhenius type equation, was found to be 1.98 9 10 6 kJ mol-1 over the entire temperature range. The study also revealed that the magnitudes of dynamic shear viscosity (g*) were higher than those of the steady shear viscosity (g) at the four temperatures, indicating that the Cox-Merz rule was not applicable to the ghee samples. Keywords Ghee Á Flow behavior index Á Storage modulus Á Loss modulus Á Cox-Merz rule Electronic supplementary material The online version of this article (
Algal Biofuels, 2017
In this chapter, modern approaches of synthetic micro-algal ecology have been focused to reach th... more In this chapter, modern approaches of synthetic micro-algal ecology have been focused to reach the industrial scale reality of biofuel feedstock production. Diversity of micro-algal species, screening for novel inherent traits, common nutrient requirements and growth complementarities, selection of a robust species for consortia development, physiology of monocultures, role of stoichiometric growth modeling in channelizing the metabolic flux for the cumulative production of high quality biomass from synthetic microalgal consortia, and scale up of the process for desirable production of high quality biomass are briefly described. To get the reality that how the changes in the community structure can make changes in the cumulative physiology and production of primary metabolites of biofuel interest has been explained in detail.
Journal of scientific & industrial research, 2003
Résumé/Abstract Biodiesel has become more attractive since one decade because of limited fossil r... more Résumé/Abstract Biodiesel has become more attractive since one decade because of limited fossil resources and increasing demand for diesel. Biodiesel derived from vegetable oils/animal fats triglycerides is a worthy replacement for the hydrocarbon based diesel fuels, because of its multiple benefits, and it can be used in diesel engines without any modification in the existing engines. Transesterification is the most commonly used method for the production of biodiesel from vegetable oils and animal fats in presence of catalytic ...
J. Sci. Indust. Res, Feb 1, 2005
Abstract: Essential oils from Cedrus deodara, Eucalyptus citriodora, Cymbopogon flexuous, C. wint... more Abstract: Essential oils from Cedrus deodara, Eucalyptus citriodora, Cymbopogon flexuous, C. winterianus, Pinus roxburghii, Syzygium aromaticum and Tagetes minuta were evaluated for bioactivity against the adults of Culex quinquefasciatus and Aedes aegypti. Serial dilutions of the oils were made in deodorized kerosene to obtain a range of concentrations (0.5-10%) and the adults were exposed to the vapour of the different oils for 1h in WHO kits for sensitivity testing. C. winterianus and S. aromaticum oils were equi effective and found ...
Application of Microalgae in Wastewater Treatment, 2019
Water crisis is realized as one of the major issues and global threat, even though sufficient wat... more Water crisis is realized as one of the major issues and global threat, even though sufficient water and land resources are available (CA 2007). According to United Nations World Water Development Report (2014), more than two million tons of sewage, agricultural, and industrial wastes is dumped untreated into lakes, rivers, and other waterbodies in developing countries that is eventually polluting the usable water supply. Almost all waterbodies globally are highly polluted because of release of various industrial as well as domestic wastewaters. This untreated wastewater provides various organic and inorganic nutrients such as nitrogen (N) and phosphorus (P), for the autotrophs which in turn leads the process of eutrophication in waterbodies (Schindler et al. 2008). The art of utilization of algae (macro-or microalgae) in removal, biotransformation, or mineralization of various nutrients, heavy metals, and xenobiotics from wastewater and carbon dioxide from waste air (Olguin and Sanchez-Galvan 2012) is known as phycoremediation. During this treatment, carbon, nitrogen, phosphorus, and other salts are used by algae as nutrients, from the wastewater or air as the case may be. Other pollutants and xenobiotics are even taken care of by the organisms by various cellular mechanisms. This is an eco-friendly process as there is no secondary pollution if the biomass produced is harvested for utilization (Mulbry et al. 2008). Literature reveals that algal bioremediation (phycoremediation) technology is highly relevant and has immense potential for future applications in various waste removal strategies. In the past few decades, extensive research has been made in algal biotechnological advancement and has successfully established the
Indian Journal of Natural Products and Resources, 2019
Bixin (9Z-6, 6’-diapocarotene-6, 6’-dioate), one of the carotenoid-based colour extracted from th... more Bixin (9Z-6, 6’-diapocarotene-6, 6’-dioate), one of the carotenoid-based colour extracted from the seeds of the tropical tree Bixa orellana L . , used primarily as a natural colouring agent in the food industry. In the present study, different solvents were used in both hot and cold conditions to extract bixin from B. orellana seeds, collected from two different geographical locations (Chhattisgarh and Uttaranchal) of India. The crude annatto extract was characterized by Thin Layer Chromatography (TLC). The major component, bixin was identified by TLC and further isolated from the crude extract by Preparative TLC (PTLC) method with a purity of 80%. Analysis of purified bixin contents isolated from samples was quantified by both High-Performance Liquid Chromatography (HPLC) and spectrophotometer. The results obtained from both the analytical techniques were comparable and lead to the conclusion that the highest amount of bixin was obtained from Chhattisgarh variety of annatto seed (2...
Environmental Chemistry Letters, 2021
The applications of green chemistry and industrial bioprocessing are becoming more popular to add... more The applications of green chemistry and industrial bioprocessing are becoming more popular to address concerns of pollution, climate change, global warming, circular bioeconomy, sustainable development goals and energy security. Both biological and thermochemical routes can play vital roles in transforming waste lignocellulosic biomass to high-value bioproducts. Lignocellulosic biomass contains essential building blocks that could be tapped to generate biofuels, biochemicals and biomaterials to replace petroleum-derived fuels and chemicals. Besides containing extractives and ash, lignocellulosic feedstocks are made up of cellulose, hemicellulose and lignin typically in the ranges of 35–55 wt%, 20–40 wt% and 10–25 wt%, respectively. Catalytic thermochemical approaches are effective for biomass conversion with a significant yield of various platform chemicals, such as furfural, 5-hydroxymethylfurfural, levulinic acid and other furan or non-furan-based chemicals. These chemicals play a crucial part in the synthesis of different fuel-based materials, which can successfully replace petroleum-based chemicals or fuels. Lignocellulosic biomass and their derived monomeric sugars can be catalytically converted into various platform chemicals using different homogeneous and heterogeneous catalysts. In this review paper, we have highlighted some promising catalysts such as mineral acids, mesoporous silica materials, zeolites, metal–organic frameworks, metal oxides and ionic liquids used in biorefining to generate biochemicals. We have also reviewed a few pieces of notable literature presenting the catalytic conversion of cellulose, hemicellulose, cellobiose, glucose, fructose and xylose into various high-value chemicals.
Journal of Horticultural Research, 2017
Four leafy vegetable species, spinach (Spinacia oleracea), amaranthus (Amaranthus viridis), fenu-... more Four leafy vegetable species, spinach (Spinacia oleracea), amaranthus (Amaranthus viridis), fenu-greek (Trigonella foenum-graecum) and bathua (Chenopodium album), were extracted with three different solvents (80% ethanol, 80% acetone and water) for maximum recovery of phenol and antioxidant compounds in the extract. The results of extraction were compared with extraction from moringa (Moringa oleifera) leaves that is known as a very rich source of antioxidants. The study showed that, it is very difficult to justify a single solvent for extraction of antioxidant compounds from different plants. Results from different solvents used for extracting the bioactive compounds mostly depend on the type of compound extracted (polar/medium polar/non-polar) present in leafy matrices. Here, 80% acetone extract showed highest total phenol content in moringa leaves but the overall antioxidant activity in the leaves of four vegetables was observed to be better after extraction with 80% ethanol. Nev...
Second and Third Generation of Feedstocks, 2019
Abstract To overcome the current energy crisis and deterioration of environmental conditions, pro... more Abstract To overcome the current energy crisis and deterioration of environmental conditions, production of fuel from sustainable and renewable sources is the major goal for an energy-demanding society. Agricultural wastes are a major fraction (1.5×1011 tons/annum) of lignocellulose biomass and this resource can be utilized as feedstock for generation of biofuels (bioethanol, biobutanol, biogas, biohydrogen, and biodiesel). Agricultural wastes do not only include residues from cultivation but also waste generated from processing of agro products, managing livestock, and distribution of fruits and vegetables. This chapter outlines the classification of agricultural wastes, its compositions, and different processing and biofuel production routes. In the chapter a major emphasis is given to the biochemical routes for biofuel production.
Waste Management, 2021
Plastic waste is a serious menace to the world due to its fastest growth rate of ~ 5% per annum a... more Plastic waste is a serious menace to the world due to its fastest growth rate of ~ 5% per annum and requires efficient technologies for its safe disposal. Plastic liquefaction producing liquid hydrocarbons is an effective way to dispose waste plastics in an eco-friendly manner. In present study, high quality liquid fuel is produced from waste plastics via two-step bottom-up cracking approach. A comparative analysis of liquid products obtained in thermal and catalytic cracking performed at relatively lower temperature (350 °C) with minimal catalyst to plastic feed ratio (1:30) has been studied. Catalytic cracking via two-step bottom-up route provides higher fraction of fuel range hydrocarbons in comparison to the thermal cracking. Catalytic cracking is performed using two different catalysts; HZSM-5 and 5%Fe/HZSM-5 in which later results in higher liquid yield (76 wt%) than former (60 wt%) having comparable fuel characteristics. GC-MS results confirm that liquid product obtained via catalytic cracking contains higher fraction of fuel range hydrocarbons (C6-C20); 66.39% for 5%Fe/HZSM-5 and 47.33% for HZSM-5 which is comparatively higher than that obtained in thermal cracking (27.39%). FT-IR, 1H and 13C NMR spectroscopic studies confirm that liquid hydrocarbons obtained via catalytic cracking have comparable chemical characteristics with fuel range hydrocarbons. Physiochemical properties of catalysts are studied using XRD, XPS, BET, FE-SEM, HR-TEM, NH3-TPD and H2-TPR techniques and correlated with activity results. Analysis of commercial diesel fuel is also incorporated to compare the fuel characteristics of liquid products.
Scientific Reports, 2020
The use pesticide is one of the indispensable means to combat mosquito borne diseases. However, t... more The use pesticide is one of the indispensable means to combat mosquito borne diseases. However, the repeated use of synthetic pesticides has induced resistance in the vector pest along with undesirable impact on the environment. The biodegradability, non-persistent and user’s safety are the root cause to prefer plant-derived pesticides to synthetic ones. The botanical based pesticides tend to degrade rapidly under the influence of several environmental factors. For the feasible application as pesticides, the plant products are formulated either as liquid or as purely solid. Despite well-established formulation technology in pesticide delivery, their handling trouble is being ignored. There is difficulty in liquid formulation of pesticide products, as they are prone to splashing and spillage, resulting in contamination, wastage and direct exposure to skin; whereas a solid formulation tends to produce dust. In the present work, cedarwood (Cedrus deodara) essential oil embedded pectin ...
Culture, Agriculture, Food and Environment, 2017
Bamboo shoots form an integral part of the local diet of the Northeastern states of India. Fermen... more Bamboo shoots form an integral part of the local diet of the Northeastern states of India. Fermented shoots have been eaten by tribal communities there since ancient times, but with increasing globalization, the trend of processing bamboo shoots at the home level seems to be changing. This paper highlights the different methods used by members of the Adi tribe in the state of Arunachal Pradesh for fermenting and detoxifying bamboo. Data were collected using participation and interview methods. The detoxifaction process was also validated scientifically at the laboratory scale using Picrate method. It was observed that some newer practices of processing bamboo shoots have been adopted in place of traditional practices. The notion of detoxification through fermentation was found satisfactory through experimental analysis. Toxicity decreased from 495 to 164.8 ppm over a 30-day fermentation time. [bamboo shoots, toxicity, indigenous knowledge, globalization]
European Journal of Wood and Wood Products, 2016
In the present study, eco-friendly treatment of D. strictus bamboo species was performed using tr... more In the present study, eco-friendly treatment of D. strictus bamboo species was performed using traditional water leaching method and smoking and plant extract (neem oil, cedar oil, jatropha cake extract, aqueous extract of leafy biomass of lantana and jatropha leaves). Control samples were damaged up to 60 % within 3 months and completely destroyed within 6 months of exposure to termites. Results of field investigations were found to be in conformity with laboratory findings of earlier investigations. Though, both traditional treatments of bamboo were able to provide protection better than control sample yet full protection in field was not achieved. Copperised neem oil treated bamboo specimens were found to be the most durable samples up to 3 years of exposure to field conditions.
Handbook of Plant-Based Biofuels, 2008
Journal of Food Research, 2014
Rice bran oil distillate is one among the secondary products produced during refining of rice bra... more Rice bran oil distillate is one among the secondary products produced during refining of rice bran oil. Rice bran oil distillate is a source of several micronutrients and natural antioxidants like γ-oryzanol, tocopherols etc. The aim of the present study was to separate γ-oryzanol from distillate and utilize it as a stabilizer for edible oil. In order to achieve this aim crystallization process was applied to obtain oryzanol rich concentrate. Further purification of oryzanol was achieved through column chromatography. Fractions of γ-oryzanol were quantified through HPLC which gives 0.83% yield. Separated γ-oryzanol was used to study the stability of pea nut and linseed oil using rancimat. The experiments were carried out in rancimat at varying temperature (110-130 ºC) and concentration (100-300 ppm). Stability of both the oil was found to be directly proportional to the γ-oryzanol concentration and inversely proportional to the temperature.
BioResources
The continuous depletion of forests calls for the astute usage of existing resources. Fungi and t... more The continuous depletion of forests calls for the astute usage of existing resources. Fungi and termites cause serious damage to biomass under storage and service conditions. Various protective treatments with high amounts of toxic chemicals are used by the wood and bamboo industry. Efforts are being made the world over to develop environmentally friendly preservatives for wood and bamboo species. Recent research highlights the potential and effectiveness of traditional practices and procedures, mainly water leaching technique and smoke treatment. Under laboratory conditions, the service life of treated blocks were found to be at a par with commercial chemical preservative treated blocks. Various plant extracts and oil-based formulations, such as organic acids, essential oils, and eco-friendly chemical-based preservatives, are in the stage of development. The bio-efficacy of such preservatives is measured in terms of the improvement in resistance to fungi and termites. However, much...
Handbook of Solid Waste Management
Clean Technologies and Environmental Policy, 2020
The emerging demand of natural indigo dye due to the environmental and sociological concerns impa... more The emerging demand of natural indigo dye due to the environmental and sociological concerns imparted by the synthetic dye helps in leveraging the conventional natural indigo dye production process in many developing countries, including India. Despite having remarkable global market potential, the high price of natural indigo dye impedes its extensive commercialization. Therefore, in the present study, the economics of natural indigo dye is evaluated through life cycle cost (LCC) analysis by considering the traditional indigo dye production process in India using the plant biomass Indigofera tinctoria L. The life cycle model includes cultivation of Indigofera biomass, as well as the production and processing of indigo dye and the cost involved in each step. Along with the detailed cost analysis, the present study also includes socioeconomic analysis and possibilities of cost reduction based on the outcome of sensitivity analysis. From the LCC analysis, the life cycle cost of Indigofera biomass cultivation is 420.74ha−1year−1,whereastheindigodyeproductioncostis420.74 ha −1 year −1 , whereas the indigo dye production cost is 420.74ha−1year−1,whereastheindigodyeproductioncostis113 ton −1 of Indigofera biomass. For an annual dye production of 1000 tons, the present study estimated the economic stabilization of rural farmers and labours by an annual employment generation of 196,250 man-days year −1 and 12,50,000 man-days year −1 , respectively. By sensitivity analysis, the raw material price was identified as the major contributor in the total indigo dye production cost. As a cost reduction measure, the combination of biomass yield (70 tons) and reduction in the biomass production cost (50%) was found to be suitable. Utilization of by-product generated from the dye industry into value-added products could contribute towards a cost reduction of 22% in the Indigofera biomass cultivation and a cost saving of $37.4 ton −1 of biomass in the indigo dye production cost.
Journal of Food Processing and Preservation, 2018
In the present study, we aimed to improve the quality of wheat flour biscuits by amending defatte... more In the present study, we aimed to improve the quality of wheat flour biscuits by amending defatted sesame cake. Fifty per cent incorporation of defatted white sesame and black sesame into biscuits improved protein, fat, crude fiber, mineral, and reduced the carbohydrate level. The textural attributes and color characteristics of the white sesame-amended biscuits (WSB) were similar to that of the control biscuits. WSB scored highest upon subjecting to sensory evaluation over black sesame-amended biscuits (BSB) and panelists scored them equal to the control biscuits. The likability of WSB was also revealed in consumer preference survey. Both WSB and BSB fortification improves the storability of biscuits by reducing the microbial contamination. Also the aqueous and methanolic extracts of 90-day stored biscuits were non-toxic to cell line (L929). Hence, it is proposed that defatted sesame cake incorporation enhances the nutritional and functional characteristics of biscuits and is also safe to consume.
Bioresource Technology, 2020
Utilization and re-use of solid and liquid waste generated from the natural indigo dye production... more Utilization and re-use of solid and liquid waste generated from the natural indigo dye production process-A zero waste approach,
Journal of Food Science and Technology, 2018
Rheological characteristics of Desi ghee were investigated at 18, 24, 30 and 36°C. The steady she... more Rheological characteristics of Desi ghee were investigated at 18, 24, 30 and 36°C. The steady shear properties were evaluated by varying the shear rate from 0.01 to 100 s-1 and the dynamic shear properties were studied by varying strain and frequency sweep from 0.01 to 100% and 0.1 to 100 rad s-1 , respectively. At the four selected temperatures, the ghee samples displayed non-Newtonian shear thinning behavior with flow behavior index (n) ranging from 0.224 to 0.911. As the shear rate increased from 0 to 100 s-1 , the values of dynamic viscosity decreased from 54 to 8.14, 20.01 to 1.05, 1.33 to 0.295, and 3.02 to 0.0025 Pa s at 18, 24, 30 and 36°C, respectively. Out of four rheological models (Power-law or Ostwald-de Waele, Herschel-Bulkley, Casson, and Bingham model) fitted to the shear rate and stress data, the Ostwald model was found to be superior in predicting the shear rate-stress data at 18°C, whereas Ostwald-de Waele and Herschel-Bulkley models predicted all the data points over the temperature range of 24-30°C, as observed by the values of coefficient of determination (R 2), standard deviation (SD), and relative deviation percentage (R d). The value of activation energy (E A), as calculated from Arrhenius type equation, was found to be 1.98 9 10 6 kJ mol-1 over the entire temperature range. The study also revealed that the magnitudes of dynamic shear viscosity (g*) were higher than those of the steady shear viscosity (g) at the four temperatures, indicating that the Cox-Merz rule was not applicable to the ghee samples. Keywords Ghee Á Flow behavior index Á Storage modulus Á Loss modulus Á Cox-Merz rule Electronic supplementary material The online version of this article (
Algal Biofuels, 2017
In this chapter, modern approaches of synthetic micro-algal ecology have been focused to reach th... more In this chapter, modern approaches of synthetic micro-algal ecology have been focused to reach the industrial scale reality of biofuel feedstock production. Diversity of micro-algal species, screening for novel inherent traits, common nutrient requirements and growth complementarities, selection of a robust species for consortia development, physiology of monocultures, role of stoichiometric growth modeling in channelizing the metabolic flux for the cumulative production of high quality biomass from synthetic microalgal consortia, and scale up of the process for desirable production of high quality biomass are briefly described. To get the reality that how the changes in the community structure can make changes in the cumulative physiology and production of primary metabolites of biofuel interest has been explained in detail.
Journal of scientific & industrial research, 2003
Résumé/Abstract Biodiesel has become more attractive since one decade because of limited fossil r... more Résumé/Abstract Biodiesel has become more attractive since one decade because of limited fossil resources and increasing demand for diesel. Biodiesel derived from vegetable oils/animal fats triglycerides is a worthy replacement for the hydrocarbon based diesel fuels, because of its multiple benefits, and it can be used in diesel engines without any modification in the existing engines. Transesterification is the most commonly used method for the production of biodiesel from vegetable oils and animal fats in presence of catalytic ...
J. Sci. Indust. Res, Feb 1, 2005
Abstract: Essential oils from Cedrus deodara, Eucalyptus citriodora, Cymbopogon flexuous, C. wint... more Abstract: Essential oils from Cedrus deodara, Eucalyptus citriodora, Cymbopogon flexuous, C. winterianus, Pinus roxburghii, Syzygium aromaticum and Tagetes minuta were evaluated for bioactivity against the adults of Culex quinquefasciatus and Aedes aegypti. Serial dilutions of the oils were made in deodorized kerosene to obtain a range of concentrations (0.5-10%) and the adults were exposed to the vapour of the different oils for 1h in WHO kits for sensitivity testing. C. winterianus and S. aromaticum oils were equi effective and found ...
Application of Microalgae in Wastewater Treatment, 2019
Water crisis is realized as one of the major issues and global threat, even though sufficient wat... more Water crisis is realized as one of the major issues and global threat, even though sufficient water and land resources are available (CA 2007). According to United Nations World Water Development Report (2014), more than two million tons of sewage, agricultural, and industrial wastes is dumped untreated into lakes, rivers, and other waterbodies in developing countries that is eventually polluting the usable water supply. Almost all waterbodies globally are highly polluted because of release of various industrial as well as domestic wastewaters. This untreated wastewater provides various organic and inorganic nutrients such as nitrogen (N) and phosphorus (P), for the autotrophs which in turn leads the process of eutrophication in waterbodies (Schindler et al. 2008). The art of utilization of algae (macro-or microalgae) in removal, biotransformation, or mineralization of various nutrients, heavy metals, and xenobiotics from wastewater and carbon dioxide from waste air (Olguin and Sanchez-Galvan 2012) is known as phycoremediation. During this treatment, carbon, nitrogen, phosphorus, and other salts are used by algae as nutrients, from the wastewater or air as the case may be. Other pollutants and xenobiotics are even taken care of by the organisms by various cellular mechanisms. This is an eco-friendly process as there is no secondary pollution if the biomass produced is harvested for utilization (Mulbry et al. 2008). Literature reveals that algal bioremediation (phycoremediation) technology is highly relevant and has immense potential for future applications in various waste removal strategies. In the past few decades, extensive research has been made in algal biotechnological advancement and has successfully established the
Indian Journal of Natural Products and Resources, 2019
Bixin (9Z-6, 6’-diapocarotene-6, 6’-dioate), one of the carotenoid-based colour extracted from th... more Bixin (9Z-6, 6’-diapocarotene-6, 6’-dioate), one of the carotenoid-based colour extracted from the seeds of the tropical tree Bixa orellana L . , used primarily as a natural colouring agent in the food industry. In the present study, different solvents were used in both hot and cold conditions to extract bixin from B. orellana seeds, collected from two different geographical locations (Chhattisgarh and Uttaranchal) of India. The crude annatto extract was characterized by Thin Layer Chromatography (TLC). The major component, bixin was identified by TLC and further isolated from the crude extract by Preparative TLC (PTLC) method with a purity of 80%. Analysis of purified bixin contents isolated from samples was quantified by both High-Performance Liquid Chromatography (HPLC) and spectrophotometer. The results obtained from both the analytical techniques were comparable and lead to the conclusion that the highest amount of bixin was obtained from Chhattisgarh variety of annatto seed (2...
Environmental Chemistry Letters, 2021
The applications of green chemistry and industrial bioprocessing are becoming more popular to add... more The applications of green chemistry and industrial bioprocessing are becoming more popular to address concerns of pollution, climate change, global warming, circular bioeconomy, sustainable development goals and energy security. Both biological and thermochemical routes can play vital roles in transforming waste lignocellulosic biomass to high-value bioproducts. Lignocellulosic biomass contains essential building blocks that could be tapped to generate biofuels, biochemicals and biomaterials to replace petroleum-derived fuels and chemicals. Besides containing extractives and ash, lignocellulosic feedstocks are made up of cellulose, hemicellulose and lignin typically in the ranges of 35–55 wt%, 20–40 wt% and 10–25 wt%, respectively. Catalytic thermochemical approaches are effective for biomass conversion with a significant yield of various platform chemicals, such as furfural, 5-hydroxymethylfurfural, levulinic acid and other furan or non-furan-based chemicals. These chemicals play a crucial part in the synthesis of different fuel-based materials, which can successfully replace petroleum-based chemicals or fuels. Lignocellulosic biomass and their derived monomeric sugars can be catalytically converted into various platform chemicals using different homogeneous and heterogeneous catalysts. In this review paper, we have highlighted some promising catalysts such as mineral acids, mesoporous silica materials, zeolites, metal–organic frameworks, metal oxides and ionic liquids used in biorefining to generate biochemicals. We have also reviewed a few pieces of notable literature presenting the catalytic conversion of cellulose, hemicellulose, cellobiose, glucose, fructose and xylose into various high-value chemicals.
Journal of Horticultural Research, 2017
Four leafy vegetable species, spinach (Spinacia oleracea), amaranthus (Amaranthus viridis), fenu-... more Four leafy vegetable species, spinach (Spinacia oleracea), amaranthus (Amaranthus viridis), fenu-greek (Trigonella foenum-graecum) and bathua (Chenopodium album), were extracted with three different solvents (80% ethanol, 80% acetone and water) for maximum recovery of phenol and antioxidant compounds in the extract. The results of extraction were compared with extraction from moringa (Moringa oleifera) leaves that is known as a very rich source of antioxidants. The study showed that, it is very difficult to justify a single solvent for extraction of antioxidant compounds from different plants. Results from different solvents used for extracting the bioactive compounds mostly depend on the type of compound extracted (polar/medium polar/non-polar) present in leafy matrices. Here, 80% acetone extract showed highest total phenol content in moringa leaves but the overall antioxidant activity in the leaves of four vegetables was observed to be better after extraction with 80% ethanol. Nev...
Second and Third Generation of Feedstocks, 2019
Abstract To overcome the current energy crisis and deterioration of environmental conditions, pro... more Abstract To overcome the current energy crisis and deterioration of environmental conditions, production of fuel from sustainable and renewable sources is the major goal for an energy-demanding society. Agricultural wastes are a major fraction (1.5×1011 tons/annum) of lignocellulose biomass and this resource can be utilized as feedstock for generation of biofuels (bioethanol, biobutanol, biogas, biohydrogen, and biodiesel). Agricultural wastes do not only include residues from cultivation but also waste generated from processing of agro products, managing livestock, and distribution of fruits and vegetables. This chapter outlines the classification of agricultural wastes, its compositions, and different processing and biofuel production routes. In the chapter a major emphasis is given to the biochemical routes for biofuel production.
Waste Management, 2021
Plastic waste is a serious menace to the world due to its fastest growth rate of ~ 5% per annum a... more Plastic waste is a serious menace to the world due to its fastest growth rate of ~ 5% per annum and requires efficient technologies for its safe disposal. Plastic liquefaction producing liquid hydrocarbons is an effective way to dispose waste plastics in an eco-friendly manner. In present study, high quality liquid fuel is produced from waste plastics via two-step bottom-up cracking approach. A comparative analysis of liquid products obtained in thermal and catalytic cracking performed at relatively lower temperature (350 °C) with minimal catalyst to plastic feed ratio (1:30) has been studied. Catalytic cracking via two-step bottom-up route provides higher fraction of fuel range hydrocarbons in comparison to the thermal cracking. Catalytic cracking is performed using two different catalysts; HZSM-5 and 5%Fe/HZSM-5 in which later results in higher liquid yield (76 wt%) than former (60 wt%) having comparable fuel characteristics. GC-MS results confirm that liquid product obtained via catalytic cracking contains higher fraction of fuel range hydrocarbons (C6-C20); 66.39% for 5%Fe/HZSM-5 and 47.33% for HZSM-5 which is comparatively higher than that obtained in thermal cracking (27.39%). FT-IR, 1H and 13C NMR spectroscopic studies confirm that liquid hydrocarbons obtained via catalytic cracking have comparable chemical characteristics with fuel range hydrocarbons. Physiochemical properties of catalysts are studied using XRD, XPS, BET, FE-SEM, HR-TEM, NH3-TPD and H2-TPR techniques and correlated with activity results. Analysis of commercial diesel fuel is also incorporated to compare the fuel characteristics of liquid products.
Scientific Reports, 2020
The use pesticide is one of the indispensable means to combat mosquito borne diseases. However, t... more The use pesticide is one of the indispensable means to combat mosquito borne diseases. However, the repeated use of synthetic pesticides has induced resistance in the vector pest along with undesirable impact on the environment. The biodegradability, non-persistent and user’s safety are the root cause to prefer plant-derived pesticides to synthetic ones. The botanical based pesticides tend to degrade rapidly under the influence of several environmental factors. For the feasible application as pesticides, the plant products are formulated either as liquid or as purely solid. Despite well-established formulation technology in pesticide delivery, their handling trouble is being ignored. There is difficulty in liquid formulation of pesticide products, as they are prone to splashing and spillage, resulting in contamination, wastage and direct exposure to skin; whereas a solid formulation tends to produce dust. In the present work, cedarwood (Cedrus deodara) essential oil embedded pectin ...
Culture, Agriculture, Food and Environment, 2017
Bamboo shoots form an integral part of the local diet of the Northeastern states of India. Fermen... more Bamboo shoots form an integral part of the local diet of the Northeastern states of India. Fermented shoots have been eaten by tribal communities there since ancient times, but with increasing globalization, the trend of processing bamboo shoots at the home level seems to be changing. This paper highlights the different methods used by members of the Adi tribe in the state of Arunachal Pradesh for fermenting and detoxifying bamboo. Data were collected using participation and interview methods. The detoxifaction process was also validated scientifically at the laboratory scale using Picrate method. It was observed that some newer practices of processing bamboo shoots have been adopted in place of traditional practices. The notion of detoxification through fermentation was found satisfactory through experimental analysis. Toxicity decreased from 495 to 164.8 ppm over a 30-day fermentation time. [bamboo shoots, toxicity, indigenous knowledge, globalization]
European Journal of Wood and Wood Products, 2016
In the present study, eco-friendly treatment of D. strictus bamboo species was performed using tr... more In the present study, eco-friendly treatment of D. strictus bamboo species was performed using traditional water leaching method and smoking and plant extract (neem oil, cedar oil, jatropha cake extract, aqueous extract of leafy biomass of lantana and jatropha leaves). Control samples were damaged up to 60 % within 3 months and completely destroyed within 6 months of exposure to termites. Results of field investigations were found to be in conformity with laboratory findings of earlier investigations. Though, both traditional treatments of bamboo were able to provide protection better than control sample yet full protection in field was not achieved. Copperised neem oil treated bamboo specimens were found to be the most durable samples up to 3 years of exposure to field conditions.
Handbook of Plant-Based Biofuels, 2008
Journal of Food Research, 2014
Rice bran oil distillate is one among the secondary products produced during refining of rice bra... more Rice bran oil distillate is one among the secondary products produced during refining of rice bran oil. Rice bran oil distillate is a source of several micronutrients and natural antioxidants like γ-oryzanol, tocopherols etc. The aim of the present study was to separate γ-oryzanol from distillate and utilize it as a stabilizer for edible oil. In order to achieve this aim crystallization process was applied to obtain oryzanol rich concentrate. Further purification of oryzanol was achieved through column chromatography. Fractions of γ-oryzanol were quantified through HPLC which gives 0.83% yield. Separated γ-oryzanol was used to study the stability of pea nut and linseed oil using rancimat. The experiments were carried out in rancimat at varying temperature (110-130 ºC) and concentration (100-300 ppm). Stability of both the oil was found to be directly proportional to the γ-oryzanol concentration and inversely proportional to the temperature.