Department Of Environmental Science And Technology
Permanent URI for this communityhttps://kr.cup.edu.in/handle/32116/84
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Item Orange peel extract enhanced sugar recovery and butanol production from potato peel by Clostridium acetobutylicum(Bellwether Publishing, Ltd., 2021-03-19T00:00:00) Kamboj, Ritu; Ms, DhanyaThe present study is focused on biobutanol production from potato peel waste in dilute orange peel extract by Clostridium acetobutylicum MTCC 11274 at three concentrations of 20, 40, and 60�g/L as sole nutrient sources. The biomass and solvent production from potato peel were enhanced in orange peel extract with the concentration and improved the sugar recovery. The effect on solvent production from 60�g/L potato peel in dilute orange peel extract was relatively higher than 20 and 40�g/L. The butanol yield was improved from 0.04�to 0.35�g/g from 60�g/L potato peel waste in orange peel extract. The butyric acid concentration was highly correlated with butanol production. The Clostridium acetobutylicum MTCC 11274 showed no inhibitory effect from D-limonene in orange peel extract. The potato peel waste hydrolyzate prepared in orange peel extract enhanced the growth of Clostridium acetobutylicum MTCC 11274 and fermentation of acetone, butanol, and ethanol. � 2021 Taylor & Francis Group, LLC.Item Arsenic induced physiological changes in improved varieties of rice grown in Malwa region of Punjab(Society for Advancement of Human and Nature (SADHNA), 2015) Kamboj, Ritu; Sharma, S; Vishwakarma, G.S.; Mittal, SunilRice is a major staple food throughout the world. However metal contamination of rice has been recognized as a new disaster on large scale. Two rice cultivars viz PR 116 and PR 118 were grown in vitro to study the effect of increasing arsenic concentration (50, 100, 250 and 500 µM) on germination, root and shoot length, biomass dry weight, chlorophyll content and per cent cellular respiration. Results showed reduction in all these parameters thereby proving the toxic nature of arsenic. Arsenic accumulation in roots and shoots of both the varieties was monitored by atomic absorption spectrophotometer (AAS) and it was concluded that arsenic is translocated to above ground tissues and ultimately reaches the grain. The status of arsenic concentration of rice and its affect on human health need to be further investigated.Item Arsenic Induced Alteration in Macromolecule Concentration and Antioxidant System in Two Improved Rice Varieties(Tamil Nadu Scientific Research Organization (TNSRO), 2016) Kamboj, Ritu; Vishwakarma, Gajendra Singh; Sharma, Shilpa; Mittal, SunilArsenic contamination of rice has been highlighted as major issue throughout the world as it is a staple food for millions. The aim of study was to analyze the effect of different concentration of arsenic on the germination, physiology, macromolecules concentration and antioxidant enzymes in improved varieties of rice. In vitro study indicates that the lower concentration of arsenate had a stimulating effect on germination, chlorophyll content as well as respiratory content while an inhibitory effect at higher concentration. Roots were more affected than shoots. Further, the content of macromolecules (carbohydrate and protein) was elevated while the activities of their hydrolyzing enzymes (α, β amylase and protease) were declined on arsenic stress. The significant elevation in the activity of superoxide dismutase and peroxidase enzymes also proved the generation of reactive oxygen species due to the arsenic toxicity