pritam chattopadhyay (6 Ergebnisse)

Taschenbuch. Zustand: Neu. Neuware -Aeromonas hydrophila ia a ubiquitous bacterial pathogen with a broad spectrum of host, ranging from molluscs to human. Therefore it is an important model to study bacterial pathogenicity. The disease spectrum in human includes gastroenteritis, septicemia, traumatic and aquatic wound infections. The world wide interest on this bacteria is increasing on the occurance of multidrug resistance and involvement in severe gastroenteritis in children. Presence of a virulence plasmid has been observed in clinical isolates. But their exact role in disease establishment and virulence is not clear. The goal is to unfold the role of plasmid in disease establishment in-vivo and triggering apoptosis in-vitro. Apoptosis or programmed cell death is actually a double sided sword that helps to maintain body homeostasis. Apoptosis triggering by pathogenic bacteria is paving a new way for future research which will help for better understanding of infectious diseases and provide new tools to control future outbreaks of new strains.Books on Demand GmbH, Überseering 33, 22297 Hamburg 72 pp. Englisch.

Taschenbuch. Zustand: Neu. Neuware -Pests resistency against most of the chemical pesticides and Bt based products are of global concern. Insect epizootics provide a good natural source of entomopathogens. Serratia entomophila is a Gram negative non spore former bacteria known for its application against Newziland grass grub. The strain S. entomophila AB2, isolated from dead pod borer in India, is not only shows its biopesticide activity against lepidopteron pests, also found to be a plant growth promoter through solubilizing inorganic phosphate and zinc and producing IAA. Therefore, it may be a very good biocontrolling agent in IPM practice. For any non spore-former, product formulation is a crucial step. A vermiculite based prototype formulation shows to enhance crop yield about 250% and reduce pest attack about 50% in ground nut and sesame when applied to field through soil conditioning method only. Single strain with multidimensional attributes will definitely pave a new way to direct the biopesticides research in coming decade. The strains will also provide novel insecticidal genes that may have used in future pest management with the aids of genetic and/or protein engineering.Books on Demand GmbH, Überseering 33, 22297 Hamburg 104 pp. Englisch.

Taschenbuch. Zustand: Neu. Neuware -Vanillin from agrowaste: Vanillin is one of the most important flavor additives in the world. Since the demand of natural vanillin cannot be met only from vanilla pod extraction, biotechnological processes based on microorganisms become more and more relavent. In this book, we describe the isolation process, characterization and identification of Streptomyces LM004 as a potent bio-transformer of feruloyl esters from de-starched wheat bran into vanillin. The strain exhibits ability to convert feruloyl esters into ferulic acid through FEase activity and then convert ferulic acid into vanillin during fermentation. The bioprocess optimization for batch culture for vanillin production from de-starched wheat bran is also discussed. This book also discuss vanillin productivity in the absence of vanillic acid demethylase and vanilic acid decarboxylase which makes the product stable for a longer period of time. This is the first report of vanillin production by direct biotransformation of feruloyl esters present in agrowastes.Books on Demand GmbH, Überseering 33, 22297 Hamburg 108 pp. Englisch.

Taschenbuch. Zustand: Neu. Neuware -Pollinia is a cohesive mass of pollen. We aim to evaluate the evolutionary trends of pollen morphology within the genus Dendrobium in the light of molecular phylogeny and to test whether pollen morphology may be considered as predictor of inter- and/or intra-specific phylogenetic relationship. A systematic study of 18 species from North-East India was conducted by means of numerical analysis based on 12 micrmorphometric descriptors and SEM ultra-structure. A phylogenetic tree from ribosomal ITS2 sequences was used as reference. Variations in the shape of pollinia were distinct and consistent with five section of the genus Dendrobium and three clads of the section Dendrobium. Other qualitative/quantitative keys to pollinia showed congruence with molecular phylogeny and supported the correlated evolution of these traits. Concurrently pollen sculpturing also showed large variation in exine morphology providing explicit clues for phylogenetic trend of exine evolution. Thus Dendrobium pollen is a good candidate for inferring the genetic relationship at inter- and intra-specific level rather than deducing the ecological adaptation.Books on Demand GmbH, Überseering 33, 22297 Hamburg 104 pp. Englisch.

Taschenbuch. Zustand: Neu. Development of bacterial biopesticide | Isolation to product formulation | Pritam Chattopadhyay (u. a.) | Taschenbuch | 104 S. | Englisch | 2012 | LAP LAMBERT Academic Publishing | EAN 9783848410415 | Verantwortliche Person für die EU: BoD - Books on Demand, In de Tarpen 42, 22848 Norderstedt, info[at]bod[dot]de | Anbieter: preigu.

Taschenbuch. Zustand: Neu. Production of Vanillin from Agrowaste | Biotransformation of Feruloyl Esters by Streptomyces sp | Pritam Chattopadhyay (u. a.) | Taschenbuch | 108 S. | Englisch | 2013 | LAP LAMBERT Academic Publishing | EAN 9783659399343 | Verantwortliche Person für die EU: BoD - Books on Demand, In de Tarpen 42, 22848 Norderstedt, info[at]bod[dot]de | Anbieter: preigu.