Showing papers by "Arun Kumar published in 2009"
TL;DR: The quantitative dynamics of WA production in Indian populations and interchemotypic hybrids developed at the institute have been studied, and the results were compared with five previously reported chemotypes from Israel, South Africa and India.
14 citations
TL;DR: Phytochemical investigations of multiple shoot cultures of selected accessions AGB002 and AGB025 of Withania somnifera have lead to isolation of four glycowithanolides and the structures have been confirmed on the basis of spectroscopic data.
Abstract: Phytochemical investigations of multiple shoot cultures of selected accessions AGB002 and AGB025 of Withania somnifera established in vitro utilizing shoot tip apices cultured on Murashige and Skoog's medium supplemented with BAP (1 mg/L) have been carried out. This has lead to isolation of four glycowithanolides viz. Withanoside IV (WSG-3), Withanoside VI (WSG-3A), Physagulin D (WSG-P) and Withastraronolide (WSC-O). The structures of these have been confirmed on the basis of spectroscopic data. Multiple shoot cultures could be an alternative renewable resource for production of these biologically active molecules.
14 citations
Patent•
31 Mar 2009TL;DR: In this paper, a method of cloning stable stress tolerant superoxide dismutase from diverse plant species using universal primers was proposed, which relates to the present invention and is based on the method described in this paper.
Abstract: The present invention relates to a method of cloning stable stress tolerant superoxide dismutase from diverse plant species using universal primers.
2 citations
29 Aug 2009
1 citations
TL;DR: Lipases comprise a group of enzymes which catalyze the hydrolysis of triglycerides to diglycerides, monoglycerides, fatty acids and glycerol at oil water interface and are widely diversified in their enzymatic properties and substrate.
Abstract: Lipases (EC 3.1.1.3) comprise a group of enzymes which catalyze the hydrolysis of triglycerides to diglycerides, monoglycerides, fatty acids and glycerol at oil water interface1,2. In addition to hydrolytic activity on triglycerides they catalyze esterification, interesterification, acidolysis, alcoholysis and aminolysis reactions. One attractive feature of lipases is their specificity with respect to the glyceride position and fatty acid type, which could seldom be constructed by chemical catalysis3. Lipases are ubiquitous enzymes found in animals, plants and microorganisms including fungi and bacteria4,5. Microbial lipases are widely diversified in their enzymatic properties and substrate Biosciences, Biotechnology Research Asia Vol. 6(2), 875-880 (2009)
1 citations