Papers by Priyangshu Sarma
The growing bioeconomy sector aims to reduce the amount of waste generated and to promote the
una... more The growing bioeconomy sector aims to reduce the amount of waste generated and to promote the
unavoidable waste generated as a resource and achieve higher levels of recycling and safe disposal. Post harvest
losses contribute to a substantial proportion of the loss that the agricultural biomass undergoes
in India. It is therefore important to make an assessment of this loss and assign a certain cost to it. In this
study, we have carried out an assessment of the residues that are generated in the field or on the farm at
the time of harvest (for example wheat and rice straw), wastes generated as a result of post-harvest losses.
In addition, the by-products from the processing of agricultural produce (for example sugarcane bagasse
produced during the production of sugar from sugar cane, or cereal husks produced during milling) are
also considered. Finally, certain aspects of the environmental impact and sustainability of the utilization
of agricultural residues and by-products are addressed.
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International Journal of Coal Geology, 2015
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Applied and environmental microbiology, 2004
A bacterial strain, PS4040, capable of degrading polycyclic aromatic hydrocarbons for use as the ... more A bacterial strain, PS4040, capable of degrading polycyclic aromatic hydrocarbons for use as the sole carbon source was isolated from oily-sludge-contaminated soil. The 16S rRNA gene showed 98.8% homology to that of Leclercia adecarboxylata. Comparative molecular typing with the clinical strain of L. adecarboxylata revealed that there were few comigrating and few distinct amplimers among them.
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Project co-funded by the European Commission within the 7 th Framework Programme Dissemination le... more Project co-funded by the European Commission within the 7 th Framework Programme Dissemination level PU Public x PP Restricted to other programme participants (including the Commission Services) RE Restricted to a group specified by the consortium (including the Commission Services) CO Confidential only for members of the consortium (including the Commission Services)
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Theriogenology, 1993
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Pedobiologia, 2010
Samples of eight geographically distinct soils contaminated with crude oil were screened for poly... more Samples of eight geographically distinct soils contaminated with crude oil were screened for polyhydroxyalkanoic acid (PHA) producing bacterial strains. Twenty three bacterial strains were able to accumulate PHA when sodium gluconate or sodium octanoate was used as the sole carbon source. Biochemical tests and 16S rRNA sequencing identified bacteria of the genera Pseudomonas, Acinetobacter, Sphingobacterium, Brochothrix, Caulobacter, Ralstonia, Burkholderia and Yokenella. Three of the bacterial strains have never been ...
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Marine Pollution Bulletin, 2014
The application of recycled marine materials to develop sustainable remediation technologies in m... more The application of recycled marine materials to develop sustainable remediation technologies in marine environment was assessed. The remediation strategy consisted of a shell carrier mounted bacterial consortium composed of hydrocarbonoclastic strains enriched with nutrients (Bioaug SC). Pilot scale studies (5000 l) were used to examine the ability of Bioaug-SC to degrade weathered crude oil (10 g l(-1); initially 315,000±44,000 mg l(-1)) and assess the impacts of the introduction and biodegradation of oil. Total petroleum hydrocarbon mass was effectively reduced by 53.3 (±5.75)% to 147,000 (±21,000) mg l(-1) within 27 weeks. 16S rDNA bacterial community profiling using Denaturant Gradient Gel Electrophoresis revealed that cyanobacteria and Proteobacteria dominated the microbial community. Aquatic toxicity assessment was conducted by ecotoxicity assays using brine shrimp hatchability, Microtox and Phaeodactylum tricornutum. This study revealed the importance of combining ecotoxicity assays with oil chemistry analysis to ensure safe remediation methods are developed.
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Letters in Applied Microbiology, 2006
To compare few phenotypic and genotypic characteristics of two desulfurizing bacterial strains, M... more To compare few phenotypic and genotypic characteristics of two desulfurizing bacterial strains, Mycobacterium phlei SM120-1 and Mycobacterium phlei GTIS10. In the present study, dibenzothiophene (DBT) desulfurizing activity, composition of fatty acids of cell membranes, DBT sulfone monoxygenase gene (bdsA) and the selection pressure applied during the growth and enrichment of the bacterial strains M. phlei SM120-1 and M. phlei GTIS10 were compared in our laboratory. The DBT desulfurization activity of M. phlei SM120-1 was found to be 0.17 +/- 0.02 micromol 2-HBP min(-1) (gram dry cell weight)(-1) and that of the bacterial strain M. phlei GTIS10 was 1.09 +/- 0.05 micromol 2-HBP min(-1) (gram dry cell weight)(-1). Fatty acid methyl ester analysis of cell membranes of these two bacterial strains in the presence of light gas oil showed that both the strains had different fatty acid profiles in their cell membranes. Comparison of the full gene sequences of the desulfurization gene bdsA in the two bacterial strains showed significant difference in the bdsA gene sequences. There was a significant difference observed in the selection pressure applied during the growth and enrichment of the two bacterial strains. The results of the comparative study of the bacterial strains, M. phlei SM120-1 and M. phlei GTIS10 showed that there were considerable differences in the phenotypic and genotypic characteristics of these two strains. The present study would broaden the understanding of biodesulfurization trait at intra-species level.
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Journal of Environmental Sciences, 2011
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International Journal of Hydrogen Energy, 2009
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International Journal of Hydrogen Energy, 2010
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International Journal of Hydrogen Energy, 2010
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FEMS Microbiology Letters, 2004
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Chemical Communications, 2013
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Canadian Journal of Microbiology, 2004
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Bioresource Technology, 2012
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Biodegradation, 2012
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Biodegradation, 2010
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Papers by Priyangshu Sarma
unavoidable waste generated as a resource and achieve higher levels of recycling and safe disposal. Post harvest
losses contribute to a substantial proportion of the loss that the agricultural biomass undergoes
in India. It is therefore important to make an assessment of this loss and assign a certain cost to it. In this
study, we have carried out an assessment of the residues that are generated in the field or on the farm at
the time of harvest (for example wheat and rice straw), wastes generated as a result of post-harvest losses.
In addition, the by-products from the processing of agricultural produce (for example sugarcane bagasse
produced during the production of sugar from sugar cane, or cereal husks produced during milling) are
also considered. Finally, certain aspects of the environmental impact and sustainability of the utilization
of agricultural residues and by-products are addressed.
unavoidable waste generated as a resource and achieve higher levels of recycling and safe disposal. Post harvest
losses contribute to a substantial proportion of the loss that the agricultural biomass undergoes
in India. It is therefore important to make an assessment of this loss and assign a certain cost to it. In this
study, we have carried out an assessment of the residues that are generated in the field or on the farm at
the time of harvest (for example wheat and rice straw), wastes generated as a result of post-harvest losses.
In addition, the by-products from the processing of agricultural produce (for example sugarcane bagasse
produced during the production of sugar from sugar cane, or cereal husks produced during milling) are
also considered. Finally, certain aspects of the environmental impact and sustainability of the utilization
of agricultural residues and by-products are addressed.