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Papers by tanzima yeasmin
Journal of Bio-Science
Girls face discrimination from the moment of her birth. Different underlying factors are responsi... more Girls face discrimination from the moment of her birth. Different underlying factors are responsible for this disparity. Though in recent decades, there is a significant advance in gender disparity, it is still prevalent in different aspect of life throughout the world. Yet a wide level of disparity still exists, whether implicit or explicit, in nutrition and child cares both in the rural and urban areas. Thus, the aim of the study was to determine the gender disparity in nutritional status among under five children in Rajshahi City, Bangladesh. A community based multi-stage cross-sectional study were accomplished for collecting anthropometric and household socio-demographic data of under-five (36≤ age ≤59) children to assess gender disparity on nutritional status in Rajshahi City, Bangladesh. It was performed during the period March 2017 to September 2017. Simple random sampling was used to select children from households by applying multistage sampling technique. Data were analyze...
Scientific Reports
Due to having a long history of traditional uses as a functional food, Zingiber zerumbet was sele... more Due to having a long history of traditional uses as a functional food, Zingiber zerumbet was selected here to explore the inherent antioxidant and antineoplastic activities of methanolic extract of its rhizome (MEZZR) against Ehrlich ascites carcinoma (EAC) cells. The rich polyphenol containing MEZZR showed a marked DPPH, ABTS, nitric oxide radicals and lipid peroxidation inhibition activity with an IC50 of 3.43 ± 1.25, 11.38 ± 1.39, 23.12 ± 3.39 and 16.47 ± 1.47 µg/ml, respectively, when compared to the standard catechin. In vivo, MEZZR significantly inhibited EAC cell growth, decreased body weight gain, increased life span and restored the altered hematological characteristics of EAC-bearing mice. Moreover, MEZZR induced nuclear condensation and fragmentation, which are notable features of apoptosis as observed by fluorescence microscopy after staining EAC cells of MEZZR-treated mice with Hoechst 33342. Additionally, in vitro, the cell growth inhibition caused by the MEZZR in MTT ...
African Journal of Agricultural Research, Sep 30, 2007
Mangifera indica showed highest percentage (100%) of mycorrhizal colonization in Rajshahi Univers... more Mangifera indica showed highest percentage (100%) of mycorrhizal colonization in Rajshahi University Campus, Bangladesh that was used as a stock plant in pot culture experiment. These root pieces have the ability to serve as a source of mycorrhizal inoculum for crop plants. After using mycorrhizal inoculum, the soil nutrients as well as root colonization for rice plants were greatly affected. Soil nutrients were increased (nitrogen-0.03 times and phosphorus 8 times compared to sterile soil), whereas the percentage of rice roots colonization of arbuscular mycorrhiza (AM) was also increased 9 times after mycorrhizal inoculation. Mycorrhizal enrichment greatly improved the soil nutrients such as nitrogen and phosphorus as well as growth of rice plants.
Energy is essential to meet the basic needs of life, to increase amenities and modernization. The... more Energy is essential to meet the basic needs of life, to increase amenities and modernization. The main sources of energy that are met our energy demands are mineral oil, coal, natural gas and firewood. These conventional energy sources are being depleted day by day. So renewable, alternative and effective energy sources should be explored for our country as well as whole world. The production of biogas serves as an alternative energy source. The main objective of our research work was enhancement of biogas production by cellulytic bacteria from bagasse using methanogens. Five liters capacity glass reactors were used. Five sets of batch modes anaerobic digesters were used under laboratory condition. Bagasse was used as feed materials. Bagasse is the by-product of sugar mill and it was used as raw materials for paper production in our paper mills. Now it is discarded and creates a problem of sugar mills to use and manage bagasse. The raw materials were diluted with supply water in the...
Journal of Pharmacognosy and Phytochemistry, 2017
Alpinia calcarata belonging to the family of Zingiberaceae is commonly found in Bangladesh and ha... more Alpinia calcarata belonging to the family of Zingiberaceae is commonly found in Bangladesh and has been conventionally used in medicine systems for the prevention of many diseased conditions. The present study was conducted to explore the antioxidant activity of ethanolic extract of Alpinia calcarata rhizome (EEACR). EEACR was studied for the quantitative estimation of phenolic, flavonoid, proanthocyanidin and flavonol compounds. Antioxidant activity was evaluated by using several in vitro standard methods. EEACR was subjected to GC-MS analysis to identify its phytoconstituents. EEACR contained a good amount of phenol, flavonoid, proanthocyanidin and flavonol. The IC50 value of the ethanol extract in the DPPH, ABTS, nitric oxide, lipid peroxidation inhibition and ferrous chelating assay were 6.044, 5.266, 25.13, 21.88, and 63.33μg/ml, respectively. EEACR also showed remarkable ferric reducing and total antioxidant capacity. The total phenolic and flavonoid contents of EEACR were pos...
Journal of Pharmacognosy and Phytochemistry, 2017
The present study was undertaken to evaluate the inherent anti-inflammatory, thrombolytic and ant... more The present study was undertaken to evaluate the inherent anti-inflammatory, thrombolytic and antimicrobial potential of ethanolic extract of the rhizome of Curcuma zedoaria (EECZR). In vitro anti-inflammatory activity was uncovered by using human erythrocyte membrane stabilization and egg albumin denaturation method. In vitro thrombolytic activity was investigated and compared with streptokinase. Antimicrobial activity was evaluated by using disc diffusion method. EECZR dose dependently showed a potent anti-inflammatory activity. In addition, thrombolytic activity was found to be 28.46±4.16%, 9.67±6.37 and 65.96±4.25% for EECZR, normal saline and streptokinase (a positive control) respectively. This extract also showed potent antibacterial activity against eight pathogenic bacteria and produced inhibition zone ranging from 10 to 15 mm. The minimum inhibitory concentrations (MICs) of the ethanol extract was found to be in the range of 64 ~ 256 μg/ml. Our results suggest that ethanol...
Mycorrhiza, 2020
Effects of single and multiple species inocula of Arbuscular Mycorrhizal Fungi on the salinity to... more Effects of single and multiple species inocula of Arbuscular Mycorrhizal Fungi on the salinity tolerance of a Bangladeshi rice (Oryza sativa L.
Update Dental College Journal, 2020
Developing country like Bangladesh among 90% of oral malignant neoplasm are arising from squamous... more Developing country like Bangladesh among 90% of oral malignant neoplasm are arising from squamous layer of oral epithelium which are third leading of this country with severe disfiguration, functiolaesa, psychological impairments and socio-economic hardship. In this study we found the prevalence of OSCC was 6.5% among total cancer patients in the two tertiary level hospitals of Bogura. Male (70%) are affected more than in females (30%). In response to male and female parameter, sex distribution ratio was 2.3:1. The prevalent average age was 55.40 years. About 80% of ulcer site was buccal mucosa then 10 % were lip mucosa. About 80% people were habituated by betel nut, leaf with tobacco chewers. Moreover 46.7% of them were maltreated by quack doctors before. Majority of the patient was in Grade II (56.7%). Correlation between variable in respect of age and cancer grading was explained. According to these study OSCC patients in north bangle region like Bogura was quite high on ( signif...
Journal of Bio-Science, 2019
In the developing countries, stunting has been the most tenacious public health problem and is th... more In the developing countries, stunting has been the most tenacious public health problem and is the major cause of child mortality and global disease burden, where 80% of this burden is found in developing countries and would result in 22% loss of adult income. The aim of this study was to investigate prevalence and determinant factors associated with stunting among pre-school children in Rajshahi City, Bangladesh. A multi-stage cross sectional study was performed during the period March 2017 to September 2017. One thousand and nine (1009) pre-school children (36≤ Age ≤71 months) were considered as our study population. Data were collected by using a pretested and semi-structured questionnaire, which consisted of socio-economic characteristics, dietary and feeding pattern related information. Stunting of a child was determined using the WHO Multicenter Growth Reference Standard. Chi-square test and multiple logistic regressions were carried out to identify determinants of stunting. T...
Journal of Bio-Science, 2019
![Research paper thumbnail of Effect of dual inoculation of arbuscular mycorrhizal fungus and Rhizobium on chlorophyll content of pigeon pea [Cajanus cajan (L.) Mill sp.]](https://attachments.academia-assets.com/117380411/thumbnails/1.jpg)
](Journal of Bio-Science, 2018
Journal of Bio-Science, 2016
Context: Arbuscular-Mycorrhizal fungi colonization in roots of many plants promotes the increased... more Context: Arbuscular-Mycorrhizal fungi colonization in roots of many plants promotes the increased nutrient uptake especially the phosphorus from phosphorus deficient soil. Objective: To compare the efficacy of different concentration of recommended dosages of super phosphate fertilizers with inoculation of AM fungi to evaluate growth, nutrients uptake on Niger plant (Guizotia abyssinica (L.f) Cass. var, RCR-18). Materials and Methods: The effect of two Arbuscular mycorrhizal fungi Scutellospora nigra and Glomus mosseae with 4 different dosage (25%, 50%, 75%, 100%) of superphosphate (P2O5) was treated on growth yield and nutrient uptake in Niger plant (Guizotia abyssinica (L.f) Cass. var, RCR-18) was evaluated under greenhouse conditions. Pots were watered they were harvested once in 30 days intervals. For 90 days the following readings viz., plant height, root length, biomass, grains yield, percent root colonization, spore number macro-micro nutrients contents in shoots and roots were determined. Results: Scutellospora nigra with 50% RDSP/kg showed a significant increase in the plant growth biomass of shoot and root of Guizotia abyssinica (L.f) Cass. var, RCR-18. Percent root colonization, seed number and N, P, K and Zn, Mg uptake in shoot and root. Conclusion: Overall, our results clearly suggest that synergistic and additive mechanisms involved can enhances the plant growth, nutrient uptake and adaptation to unfavorable drought soil conditions.
Malaysian Journal of Microbiology, 2010
Journal of Bio-Science, 2015
Context: Neonatal sepsis is one of the most important causes of morbidity and mortality and C-rea... more Context: Neonatal sepsis is one of the most important causes of morbidity and mortality and C-reactive protein (CRP) an excellent biomarker has significant diagnostic and prognostic value for the treatment of septicemia patient. Objectives: To isolate and identify viable pathogens from blood culture and their antibiogram and to correlate CRP levels with septicemic child. Materials and Methods: A total of 273 cases among which 233 were clinically suspected septicemia cases and 40 were healthy controls in age group 0 day to 15 years were selected from United Hospital Ltd., Dhaka Bangladesh. Blood culture was analyzed by the instrument BACTEC 9120 series. CRP was measured from blood serum by the auto biochemical analyzer OLYMPUS AU 640 followed by immuno-turbidimetric method. The organisms were isolated by inoculation on blood agar and MacConkey agar media. Identification of the organisms was done by colony morphology, gram staining and biochemical tests. Sensitivity of isolates was do...
Asian Pacific Journal of Tropical Biomedicine, 2011
Asian Pacific Journal of Tropical Biomedicine, 2012
Journal of Bio-Science, 2012
Context: To analyze the nutritional and physicochemical parameters for the production of alkali-t... more Context: To analyze the nutritional and physicochemical parameters for the production of alkali-thermostable and cellulase free xylanase from bacteria. Objectives: The aim of this study was to isolation and identification and of alkali-thermostable and cellulase free xylanase producing bacteria from soil as well as optimization of process parameters for xylanase production. Materials and Methods: The bacterium Bacillus sp. was isolated from soil by serial dilution technique on xylan agar medium and identified by morphological and biochemical studies. The production of xylanase was carried out on xylan broth medium and xylanase activity was assayed by dinitrosalicylic acid (DNS) method. The effect of cultural parameters on the production of xylanase was determined by measuring the activity of xylanase. The effect of temperature and pH on the activity of partially purified xylanase as well as substrate specificity of xylanase were examined. Results: The maximum xylanase production (40...
Journal of Bio-Science, 2014
Context: Basella alba is a green vegetable and grows in both winter and summer; however the tempe... more Context: Basella alba is a green vegetable and grows in both winter and summer; however the temperature sensitivity on metabolic regulation in this species is not clarified. Objective: To find the role of low and high temperature induced regulation of metabolic functions particularly alteration and accumulation of inorganic phosphate in leaf. Materials and Methods: Plants grown in pot were exposed to cold (8°C) for 24h, 48h and 72h periods and the respective controls were kept in ambient room temperature for the above mentioned time. For high temperature induced plants, they were exposed to 45°C with full aeration along with sufficient water. Control pot was used similarly in room temperature; however, the temperature was maintained 30°C by using air cooling system (AC). Results: Low temperature causes the higher inorganic phosphate level in leaf and was increased by 33.6%, 34.7% and 62.8% respectively when compared to the respective controls. Therefore, it is assumed that short ter...
Pharmaceutical Biology, 2009
Two triterpenes, β-amyrin and 12-oleanene 3β, 21β-diol, were isolated as a mixture from the chlor... more Two triterpenes, β-amyrin and 12-oleanene 3β, 21β-diol, were isolated as a mixture from the chloroform soluble fraction of an ethanol extract of Duranta repens Linn (Verbenaceae) stem. The structures of the two compounds were confirmed by analysis of their IR, 1 H-NMR, 13 C-NMR and LC-MS spectral data. The mixture of β-amyrin and 12-oleanene 3β, 21β-diol (compound 1) was highly effective against the larvae of the mosquito, Culex quinquefasciatus Say (Diptera: Culicidae), as a mosquitocide.
Journal of Bio-Science
Girls face discrimination from the moment of her birth. Different underlying factors are responsi... more Girls face discrimination from the moment of her birth. Different underlying factors are responsible for this disparity. Though in recent decades, there is a significant advance in gender disparity, it is still prevalent in different aspect of life throughout the world. Yet a wide level of disparity still exists, whether implicit or explicit, in nutrition and child cares both in the rural and urban areas. Thus, the aim of the study was to determine the gender disparity in nutritional status among under five children in Rajshahi City, Bangladesh. A community based multi-stage cross-sectional study were accomplished for collecting anthropometric and household socio-demographic data of under-five (36≤ age ≤59) children to assess gender disparity on nutritional status in Rajshahi City, Bangladesh. It was performed during the period March 2017 to September 2017. Simple random sampling was used to select children from households by applying multistage sampling technique. Data were analyze...
Scientific Reports
Due to having a long history of traditional uses as a functional food, Zingiber zerumbet was sele... more Due to having a long history of traditional uses as a functional food, Zingiber zerumbet was selected here to explore the inherent antioxidant and antineoplastic activities of methanolic extract of its rhizome (MEZZR) against Ehrlich ascites carcinoma (EAC) cells. The rich polyphenol containing MEZZR showed a marked DPPH, ABTS, nitric oxide radicals and lipid peroxidation inhibition activity with an IC50 of 3.43 ± 1.25, 11.38 ± 1.39, 23.12 ± 3.39 and 16.47 ± 1.47 µg/ml, respectively, when compared to the standard catechin. In vivo, MEZZR significantly inhibited EAC cell growth, decreased body weight gain, increased life span and restored the altered hematological characteristics of EAC-bearing mice. Moreover, MEZZR induced nuclear condensation and fragmentation, which are notable features of apoptosis as observed by fluorescence microscopy after staining EAC cells of MEZZR-treated mice with Hoechst 33342. Additionally, in vitro, the cell growth inhibition caused by the MEZZR in MTT ...
African Journal of Agricultural Research, Sep 30, 2007
Mangifera indica showed highest percentage (100%) of mycorrhizal colonization in Rajshahi Univers... more Mangifera indica showed highest percentage (100%) of mycorrhizal colonization in Rajshahi University Campus, Bangladesh that was used as a stock plant in pot culture experiment. These root pieces have the ability to serve as a source of mycorrhizal inoculum for crop plants. After using mycorrhizal inoculum, the soil nutrients as well as root colonization for rice plants were greatly affected. Soil nutrients were increased (nitrogen-0.03 times and phosphorus 8 times compared to sterile soil), whereas the percentage of rice roots colonization of arbuscular mycorrhiza (AM) was also increased 9 times after mycorrhizal inoculation. Mycorrhizal enrichment greatly improved the soil nutrients such as nitrogen and phosphorus as well as growth of rice plants.
Energy is essential to meet the basic needs of life, to increase amenities and modernization. The... more Energy is essential to meet the basic needs of life, to increase amenities and modernization. The main sources of energy that are met our energy demands are mineral oil, coal, natural gas and firewood. These conventional energy sources are being depleted day by day. So renewable, alternative and effective energy sources should be explored for our country as well as whole world. The production of biogas serves as an alternative energy source. The main objective of our research work was enhancement of biogas production by cellulytic bacteria from bagasse using methanogens. Five liters capacity glass reactors were used. Five sets of batch modes anaerobic digesters were used under laboratory condition. Bagasse was used as feed materials. Bagasse is the by-product of sugar mill and it was used as raw materials for paper production in our paper mills. Now it is discarded and creates a problem of sugar mills to use and manage bagasse. The raw materials were diluted with supply water in the...
Journal of Pharmacognosy and Phytochemistry, 2017
Alpinia calcarata belonging to the family of Zingiberaceae is commonly found in Bangladesh and ha... more Alpinia calcarata belonging to the family of Zingiberaceae is commonly found in Bangladesh and has been conventionally used in medicine systems for the prevention of many diseased conditions. The present study was conducted to explore the antioxidant activity of ethanolic extract of Alpinia calcarata rhizome (EEACR). EEACR was studied for the quantitative estimation of phenolic, flavonoid, proanthocyanidin and flavonol compounds. Antioxidant activity was evaluated by using several in vitro standard methods. EEACR was subjected to GC-MS analysis to identify its phytoconstituents. EEACR contained a good amount of phenol, flavonoid, proanthocyanidin and flavonol. The IC50 value of the ethanol extract in the DPPH, ABTS, nitric oxide, lipid peroxidation inhibition and ferrous chelating assay were 6.044, 5.266, 25.13, 21.88, and 63.33μg/ml, respectively. EEACR also showed remarkable ferric reducing and total antioxidant capacity. The total phenolic and flavonoid contents of EEACR were pos...
Journal of Pharmacognosy and Phytochemistry, 2017
The present study was undertaken to evaluate the inherent anti-inflammatory, thrombolytic and ant... more The present study was undertaken to evaluate the inherent anti-inflammatory, thrombolytic and antimicrobial potential of ethanolic extract of the rhizome of Curcuma zedoaria (EECZR). In vitro anti-inflammatory activity was uncovered by using human erythrocyte membrane stabilization and egg albumin denaturation method. In vitro thrombolytic activity was investigated and compared with streptokinase. Antimicrobial activity was evaluated by using disc diffusion method. EECZR dose dependently showed a potent anti-inflammatory activity. In addition, thrombolytic activity was found to be 28.46±4.16%, 9.67±6.37 and 65.96±4.25% for EECZR, normal saline and streptokinase (a positive control) respectively. This extract also showed potent antibacterial activity against eight pathogenic bacteria and produced inhibition zone ranging from 10 to 15 mm. The minimum inhibitory concentrations (MICs) of the ethanol extract was found to be in the range of 64 ~ 256 μg/ml. Our results suggest that ethanol...
Mycorrhiza, 2020
Effects of single and multiple species inocula of Arbuscular Mycorrhizal Fungi on the salinity to... more Effects of single and multiple species inocula of Arbuscular Mycorrhizal Fungi on the salinity tolerance of a Bangladeshi rice (Oryza sativa L.
Update Dental College Journal, 2020
Developing country like Bangladesh among 90% of oral malignant neoplasm are arising from squamous... more Developing country like Bangladesh among 90% of oral malignant neoplasm are arising from squamous layer of oral epithelium which are third leading of this country with severe disfiguration, functiolaesa, psychological impairments and socio-economic hardship. In this study we found the prevalence of OSCC was 6.5% among total cancer patients in the two tertiary level hospitals of Bogura. Male (70%) are affected more than in females (30%). In response to male and female parameter, sex distribution ratio was 2.3:1. The prevalent average age was 55.40 years. About 80% of ulcer site was buccal mucosa then 10 % were lip mucosa. About 80% people were habituated by betel nut, leaf with tobacco chewers. Moreover 46.7% of them were maltreated by quack doctors before. Majority of the patient was in Grade II (56.7%). Correlation between variable in respect of age and cancer grading was explained. According to these study OSCC patients in north bangle region like Bogura was quite high on ( signif...
Journal of Bio-Science, 2019
In the developing countries, stunting has been the most tenacious public health problem and is th... more In the developing countries, stunting has been the most tenacious public health problem and is the major cause of child mortality and global disease burden, where 80% of this burden is found in developing countries and would result in 22% loss of adult income. The aim of this study was to investigate prevalence and determinant factors associated with stunting among pre-school children in Rajshahi City, Bangladesh. A multi-stage cross sectional study was performed during the period March 2017 to September 2017. One thousand and nine (1009) pre-school children (36≤ Age ≤71 months) were considered as our study population. Data were collected by using a pretested and semi-structured questionnaire, which consisted of socio-economic characteristics, dietary and feeding pattern related information. Stunting of a child was determined using the WHO Multicenter Growth Reference Standard. Chi-square test and multiple logistic regressions were carried out to identify determinants of stunting. T...
Journal of Bio-Science, 2019
Journal of Bio-Science, 2018
Journal of Bio-Science, 2016
Context: Arbuscular-Mycorrhizal fungi colonization in roots of many plants promotes the increased... more Context: Arbuscular-Mycorrhizal fungi colonization in roots of many plants promotes the increased nutrient uptake especially the phosphorus from phosphorus deficient soil. Objective: To compare the efficacy of different concentration of recommended dosages of super phosphate fertilizers with inoculation of AM fungi to evaluate growth, nutrients uptake on Niger plant (Guizotia abyssinica (L.f) Cass. var, RCR-18). Materials and Methods: The effect of two Arbuscular mycorrhizal fungi Scutellospora nigra and Glomus mosseae with 4 different dosage (25%, 50%, 75%, 100%) of superphosphate (P2O5) was treated on growth yield and nutrient uptake in Niger plant (Guizotia abyssinica (L.f) Cass. var, RCR-18) was evaluated under greenhouse conditions. Pots were watered they were harvested once in 30 days intervals. For 90 days the following readings viz., plant height, root length, biomass, grains yield, percent root colonization, spore number macro-micro nutrients contents in shoots and roots were determined. Results: Scutellospora nigra with 50% RDSP/kg showed a significant increase in the plant growth biomass of shoot and root of Guizotia abyssinica (L.f) Cass. var, RCR-18. Percent root colonization, seed number and N, P, K and Zn, Mg uptake in shoot and root. Conclusion: Overall, our results clearly suggest that synergistic and additive mechanisms involved can enhances the plant growth, nutrient uptake and adaptation to unfavorable drought soil conditions.
Malaysian Journal of Microbiology, 2010
Journal of Bio-Science, 2015
Context: Neonatal sepsis is one of the most important causes of morbidity and mortality and C-rea... more Context: Neonatal sepsis is one of the most important causes of morbidity and mortality and C-reactive protein (CRP) an excellent biomarker has significant diagnostic and prognostic value for the treatment of septicemia patient. Objectives: To isolate and identify viable pathogens from blood culture and their antibiogram and to correlate CRP levels with septicemic child. Materials and Methods: A total of 273 cases among which 233 were clinically suspected septicemia cases and 40 were healthy controls in age group 0 day to 15 years were selected from United Hospital Ltd., Dhaka Bangladesh. Blood culture was analyzed by the instrument BACTEC 9120 series. CRP was measured from blood serum by the auto biochemical analyzer OLYMPUS AU 640 followed by immuno-turbidimetric method. The organisms were isolated by inoculation on blood agar and MacConkey agar media. Identification of the organisms was done by colony morphology, gram staining and biochemical tests. Sensitivity of isolates was do...
Asian Pacific Journal of Tropical Biomedicine, 2011
Asian Pacific Journal of Tropical Biomedicine, 2012
Journal of Bio-Science, 2012
Context: To analyze the nutritional and physicochemical parameters for the production of alkali-t... more Context: To analyze the nutritional and physicochemical parameters for the production of alkali-thermostable and cellulase free xylanase from bacteria. Objectives: The aim of this study was to isolation and identification and of alkali-thermostable and cellulase free xylanase producing bacteria from soil as well as optimization of process parameters for xylanase production. Materials and Methods: The bacterium Bacillus sp. was isolated from soil by serial dilution technique on xylan agar medium and identified by morphological and biochemical studies. The production of xylanase was carried out on xylan broth medium and xylanase activity was assayed by dinitrosalicylic acid (DNS) method. The effect of cultural parameters on the production of xylanase was determined by measuring the activity of xylanase. The effect of temperature and pH on the activity of partially purified xylanase as well as substrate specificity of xylanase were examined. Results: The maximum xylanase production (40...
Journal of Bio-Science, 2014
Context: Basella alba is a green vegetable and grows in both winter and summer; however the tempe... more Context: Basella alba is a green vegetable and grows in both winter and summer; however the temperature sensitivity on metabolic regulation in this species is not clarified. Objective: To find the role of low and high temperature induced regulation of metabolic functions particularly alteration and accumulation of inorganic phosphate in leaf. Materials and Methods: Plants grown in pot were exposed to cold (8°C) for 24h, 48h and 72h periods and the respective controls were kept in ambient room temperature for the above mentioned time. For high temperature induced plants, they were exposed to 45°C with full aeration along with sufficient water. Control pot was used similarly in room temperature; however, the temperature was maintained 30°C by using air cooling system (AC). Results: Low temperature causes the higher inorganic phosphate level in leaf and was increased by 33.6%, 34.7% and 62.8% respectively when compared to the respective controls. Therefore, it is assumed that short ter...
Pharmaceutical Biology, 2009
Two triterpenes, β-amyrin and 12-oleanene 3β, 21β-diol, were isolated as a mixture from the chlor... more Two triterpenes, β-amyrin and 12-oleanene 3β, 21β-diol, were isolated as a mixture from the chloroform soluble fraction of an ethanol extract of Duranta repens Linn (Verbenaceae) stem. The structures of the two compounds were confirmed by analysis of their IR, 1 H-NMR, 13 C-NMR and LC-MS spectral data. The mixture of β-amyrin and 12-oleanene 3β, 21β-diol (compound 1) was highly effective against the larvae of the mosquito, Culex quinquefasciatus Say (Diptera: Culicidae), as a mosquitocide.