Shivangi Mathur - Academia.edu (original) (raw)

Papers by Shivangi Mathur

With an increasing population and demand of durability plastic's yearly production is surpass... more With an increasing population and demand of durability plastic's yearly production is surpassed 350-400 million tons (Geyer 2017). Hazardous effects of plastic are known since years (Jambeck et al. 2015) and scientists worldwide are trying to come up with new technology to deal with it. Recycling, which is the most common practice to deal with plastic problem is not a viable solution (Alexander 2019) as these materials continue to accumulate in the environment in form of MacroMeso, microand nano-plastics (Blettler et al. 2017). Other solutions like development and production of Biodegradable plastic is also referred as potential remedy to worldwide quandary, but it has its own setbacks (Haider et al. 2019). Biodegradation, i. e. degradation of organic chemicals into simple compounds by living organism such as Microbes and fungi is one of the effective and emerging solutions to plastic problem. Multiple efforts are being carried out to find and isolate microorganism capable of ut...

The Journal of Basic and Applied Zoology, 2021

Background Although the apple snail Pila globosa is used as indicator species for human consumpti... more Background Although the apple snail Pila globosa is used as indicator species for human consumption locally and as fish feed, research on it in general is very scanty. It is used in food industry, in aquaculture as fish bait and used as food in many regions of India and many other countries, but research on it has been started in the 1970s. Only 40 articles are available on this organism in PubMed indicating an urgent need of basic research on it especially work on its spatiotemporal morphometry Therefore, sampling of P. globosa was done from different parts of India in different seasons (summer, winter and rainy), and different morphometric studies were performed on this organism to draw baseline information. Analysis was conducted to study morphometry, the relationship between shell length and the weight and relative condition factor of Indian apple snail Pila globosa collected from five zones (east, west, north, south and centre) of India during 2018–2019 year. Results The shell ...

International Journal of Advanced Research, 2016

Commiphoramukul found in India, Pakistan and Bangladesh. Guggul gum resin has been used to treat ... more Commiphoramukul found in India, Pakistan and Bangladesh. Guggul gum resin has been used to treat various diseases including cancer, atherosclerosis, rheumatism and obesity. The crude extracts obtained from the resin of Commiphoramukul in different solvents like ethyl acetate, methanol, acetone, and hexane were analyzed for phytochemical study. Secondary metabolites steroids, quinines, gum and mucilage, fixed oil and fats were found in all the four different extracts of Commiphoramukul however, oxalate and alkaloids were not found in any extract. Ethyl acetate, methanol, acetone, and hexane extracts from method-1(soxhlet) and method2 (cold) were tested for their ability to scavenge DPPH radical. Ethyl acetate extracts exhibited higher antioxidant activity (45.56%) compared to other solvent extracts. Various concentration of Commiphoramukul plant resin extract were used for MTT assay and highest % inhibition/Cytotoxicity (75.68 %) was found by methanol soxhlet extract having lowest IC 50 value (58.5µg/ml).

International Association of Biologicals and Computational Digest

Sesamum indicum is an important food oil crop of India. It is useful in many aspects like seeds f... more Sesamum indicum is an important food oil crop of India. It is useful in many aspects like seeds for oil, seed cake (after oil extraction) as fodder, Seeds as one of the richest sources of calcium carrying many nutrients, seeds having therapeutic properties along with many cosmetic uses. For releasing any new variety of crop DUS (Distinctness, Uniformity and Stability) Test is done. For conducting DUS Test many morphological characteristics are observed for several generations and uniformity stability of characteristics are noted down. We observed morphological characteristics of 16 Sesamum crop varieties from different regions of India for DUS Testing. Result shown that even geographically different Sesamum crop can be grouped into one. So, along with morphological characteristics, Biochemical and Molecular markers are also suggested to be included for DUS Testing.

Annals of Biological Research, 2018

In past few decades urbanization is unprecedented in its magnitude and rate, which has led to con... more In past few decades urbanization is unprecedented in its magnitude and rate, which has led to construction of buildings and other material at large scale. Though cement is most preferred construction material used till date, technologies used to improve construction material and make it more environment friendly till date are not impressive e.g. grouting applications also has adverse effect on environment. It is only interdisciplinary research of Microbiology, Civil engineering and Geochemistry which can come up with a method like Microbial Induced Calcite Precipitation (MICP) and has become the focus of many studies as a first foray into developing a biomediated soil improvement technology due to the relative ease of investigation in the laboratory, no requirement of injections and low input as cultures can be reused. This paper is focused primarily on basic mechanism of calcite precipitation, factors affecting, its advantages and disadvantages. Potential applications and challenge...

One of the initial oil seeds known to humankind, sesame seeds have been widely employed in culina... more One of the initial oil seeds known to humankind, sesame seeds have been widely employed in culinary as well as in traditional medicines for their nutritive, preventive, and curative properties. They are highly valued for their oil which is exceptionally resistant to rancidity. "Open sesame"—the famous phrase from the Arabian Nights—reflects the distinguishing feature of the sesame seed pod, which bursts open when it reaches maturity. Not only are sesame seeds an excellent source of copper and a very good source of manganese, but they are also a good source of calcium, magnesium, iron, phosphorus, vitamin B1, zinc, molybdenum, selenium, and dietary fiber. They are used as active ingredients in antiseptics, bactericides, viricides, disinfectants, moth repellants, and antitubercular agents because they contain natural antioxidants such as sesamin and sesamolin. These characteristics have stimulated interest in the biochemical and physiological characterization of sesame. This...

Senescence can broadly be defined as the combination of events that leads to the death of cells, ... more Senescence can broadly be defined as the combination of events that leads to the death of cells, tissues, or organs. Such a definition, applied to cut flowers, might include adverse water relations and floret abscission, which normally accompanies the events occurring during ageing and death of floral tissues. It is a common conviction in the floral trade that flowers are very sensitive to ethylene. Amongst plant physiologists, too, the importance of ethylene in the sequence of events i.e., flower senescence is considered well established. These assumptions are based on a substantial body of research. The hormonal role of ethylene in flower senescence was not established until the development of analytical methods sufficiently sensitive to measure the minute quantities produced by the minimal tissues of a flower. Using gas chromatography, researchers have shown that, depending on the species, ethylene may be involved in several phases of flowering, from induction through growth of f...

The Journal of Basic and Applied Zoology

Vegetos- An International Journal of Plant Research

Stevia rebaudiana (Bertoni), known to be an anti-diabetic medicinal herb, belongs to Asteraceae f... more Stevia rebaudiana (Bertoni), known to be an anti-diabetic medicinal herb, belongs to Asteraceae family which has bioactive compounds stevioside and rebaudioside in its leaves that taste about 300-350 times sweeter than sucrose. Nodal segments were cultured in half-strength Murashige and Skoog (MS) medium supplemented with kinetin (Kn) and benzylaminopurine (BAP), alone and in combination (0.2, 0.5, 1.0, 2.0 and 3.0 mg L-1), for shoot proliferation while various concentrations of auxins i.e. indole acetic acid (IAA) and indole butyric acid (IBA) (0.2, 0.5, 1.0, 2.0 and 3.0 mg L-1), alone or in combination with different cytokinins, for rooting. Almost in all the cultures shoot primordia initiation was observed 2-5 days after the inoculation. Overall, from the economical point of view, half-strength MS media with 0.2 mg L-1 Kn was the best producing maximum number of shoot (3.00 ± 0.00), shoot length (7.13 ± 0.43) and number of leaves (27.75±0.85), after 60 days of inoculation. However, after 30 days of transfer in rooting media supplemented with combined IBA (2.0 mg L-1) and Kn (0.5 mg L-1) showed best response in number of roots (10.00 ± 0.41) and length of root (cm) (6.73 ± 0.09), respectively. Regenerated plantlets were hardened in potting mixture containing perlite: sand: soil (1:1:1) for 2 months inside culture room with 70% relative humidity and later transferred in green house for 8 weeks before final transfer into the field. This micro-propagation method using half-strength MS media could be economical and effectively used for mass production of Stevia rebaudiana under in vitro condition.

The determination of genetic differences among crop genotypes has become the primary need to gran... more The determination of genetic differences among crop genotypes has become the primary need to grant patent and the protection of Plant Breeder Rights (PBR). In the present study RAPD and ISSR markers were employed for the characterization of 16 sesame genotypes. Twenty six RAPD and 17 ISSR primers that generated clear and reproducible banding patterns amplified 194 and 163 bands, respectively among 16 sesame genotypes. Both RAPD and ISSR primers showed maximum discrimination power, and produced putative variety specific bands, which could be used for the identification of all the sesame genotypes, individually. However, only AG and CA based ISSR primers were found effective in the discrimination of genotypes. A poor correlation was observed between the matrices produced by RAPD and ISSR primers, which might be due to the array of different sites of the genome. Though, there was greater similarity among sesame genotypes (0.78 for RAPD and 0.71 for ISSR), the observed genetic diversity (0.22 for RAPD and 0.29 for ISSR), was found effective for the characterization of sesame genotypes. It is suggested that putative variety specific RAPD and ISSR markers could be converted to Codominant sequence characterized amplified region/sequence tagged site (SCAR /STS) markers to develop robust variety specific markers.

Pakistan Journal of Nutrition, 2010

Short shelf life is a major impediment to the processing and distribution of mushroom. The effect... more Short shelf life is a major impediment to the processing and distribution of mushroom. The effect of chemical preservatives on some quality attributes of mushroom during storage was investigated. Mushroom were soaked in four preservatives at two concentrations for 10 mins, packaged, stored at 4°C for 30 days and analysed at intervals for their microbial population, colour, firmness and weight loss. Sodium benzoate (0.05%, 0.1%) lost its preservative effect on all the microorganisms enumerated after 3 days, and samples treated with 0.1% potassium sorbate had the lowest microbial load at the end of the storage period. Change in colour of the potassium sorbate (0.1%)-treated sample was lower than and significantly different from the citric acid (2%, 4%)-treated samples. The values of the firmness of the 4% citric acid preserved mushroom were significantly different (P ≤ 0.05) from other samples throughout the storage period. There was a significant negative correlation (r = À0.807, P < 0.01) between the firmness and weight loss of the preserved mushroom. Potassium sorbate (0.1%) and citric acid (4%) extended the shelf life of mushroom for 24 days.