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Environmental Chemistry Letters - Multi-drug resistant microbes are becoming a serious threat to health security and the economy. Antibiotic resistance results from the overuse of antibiotics for... 相似文献
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Various agricultural and kitchen waste residues were assessed for their ability to support the production of a complete cellulase system by Aspergillus niger NS-2 in solid state fermentation. Untreated as well as acid and base-pretreated substrates including corn cobs, carrot peelings, composite, grass, leaves, orange peelings, pineapple peelings, potato peelings, rice husk, sugarcane bagasse, saw dust, wheat bran, wheat straw, simply moistened with water, were found to be well suited for the organism's growth, producing good amounts of cellulases after 96 h without the supplementation of additional nutritional sources. Yields of cellulases were higher in alkali treated substrates as compared to acid treated and untreated substrates except in wheat bran. Of all the substrates tested, wheat bran appeared to be the best suited substrate producing appreciable yields of CMCase, FPase and β-glucosidase at the levels of 310, 17 and 33 U/g dry substrate respectively. An evaluation of various environmental parameters demonstrated that appreciable levels of cellulases could be produced over a wide range of temperatures (20-50 °C) and pH levels (3.0-8.0) with a 1:1.5 to 1:1.75 substrate to moisture ratio. 相似文献
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Joshi N Dharmlata Sahu AP 《Journal of environmental biology / Academy of Environmental Biology, India》2007,28(1):35-37
Cypermethrin was administered to Heteropneustes fossilis in chronic concentration to determine lesion of liver as indicators of tissue damage. The cypermethrin dose used was 1/4 of 96 hr LC50. Histopathological changes in liver ranged from vacuolization, necrosis, fibrosis of perivascular region and disposition of yellow brown grains at different time of exposure viz; 20th, 30th, 40th and 60th days. 相似文献
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Impact of industrial air pollutants on some biochemical parameters and yield in wheat and mustard plants 总被引:1,自引:0,他引:1
The present study was carried out to determine the impacts of SO2, NO
x
, SPM and RSPM, the most common air pollutants, generated mainly due to industries and vehicles, on some biochemical parameters
and yield in wheat and mustard plants during 2006. The concentration of SO2, NO
x
, SPM and RSPM was determined at the polluted sites across the seasons, which ranged between 14.29–18.10, 20.81–22.43, 483.65–500.85
and 160.67–171.18 μg m−3, respectively. The wheat and mustard plants grown at polluted sites showed significant reduction in chlorophyll ‘a’, chlorophyll ‘b’, total chlorophyll, carotenoid, ascorbic acid, pH, relative water content and yield. The data were further analyzed using
a two way ANOVA. It is concluded that the ambient air pollutants have a potential adverse impact on biochemical parameters,
which further leads to a reduction in the yield of wheat and mustard crops. 相似文献
5.
Joshi N Gupta D 《Journal of environmental biology / Academy of Environmental Biology, India》2008,29(2):211-214
2, 4-dichlorophenoxyacetic acid (2,4-D) is a post emergence herbicide. The tests were conducted to study the toxicity of 2,4-D using EC50 value in four dilutions. 2,4-D was applied at concentration of 25, 50, 75, 100, 200 and 300 mg l(-1) in the potato Dextrose agar medium. The effect of this herbicide was evaluated as the colony forming unit (CFU). EC50 value for 10(-3) dilution of soil was 138 +/- 5.944 mg l(-1). Soil physico-chemical parameters and mycofloral properties were also evaluated. Qualitatively 10 genera of fungi were observed in untreated soil, whereas 4 genera were found in 2,4-D administered dose. 相似文献
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Elshaghabee Fouad M. F. Rokana Namita Panwar Harsh Heller Knut J. Schrezenmeir Jürgen 《Environmental Chemistry Letters》2019,17(4):1553-1563
Environmental Chemistry Letters - Non-alcoholic fatty liver disease (NAFLD) is characterized by an increase in fat content of liver cells, which is independent from alcohol intake. Here, we review... 相似文献
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Singh Namita Ashish Kumar Naresh Raghu H. V. Bhand Sunil Chandra Sudhir Sharma Pradeep Kumar 《Environmental Chemistry Letters》2019,17(2):1097-1103
Environmental Chemistry Letters - Aflatoxin M1 contamination in milk and dairy products is a major issue worldwide. Aflatoxin is a carcinogen that enters into the milk through animals feed. Here,... 相似文献
8.
Namita Ashish Singh 《Environmental Chemistry Letters》2017,15(2):185-191
Nanotechnology can be defined as the use of nanomaterials for human benefit. Nanomaterials have unique properties due to their physical and chemical characteristics at the nanoscale (10?9 nm). Nowadays, nanotechnology is providing new products in all industrial sectors. This article reviews innovations in fields such as biomedical, diagnosis of diseases, therapeutics, agriculture and food, nanofertilizers, oil, gas, textile and cosmeceuticals and packaging. Recent trends of patents and scholarly publications in nanotechnology are also discussed. 相似文献
9.
Dutta Namita Dutta Samiron Bhupenchandra Ingudam Karmakar R. M. Das K. N. Singh Laishram Kanta Bordoloi Anshuman Sarmah Trishna 《Environmental monitoring and assessment》2021,193(6):1-32
Environmental Monitoring and Assessment - Evaporation is an important meteorological variable that has a great impact on water resources. In the current research, climatology data, and seasonal... 相似文献
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