Comparative assessment in enzyme activities and microbial populations during normal and vermicomposting.

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dc.contributor.authorDevi, S Haritha
dc.contributor.authorVijayalakshmi, K
dc.contributor.authorJyotsna, K Pavana
dc.contributor.authorShaheen, S K
dc.contributor.authorJyothi, K
dc.contributor.authorRani, M Surekha
dc.date.accessioned2013-04-23T06:21:02Z
dc.date.available2013-04-23T06:21:02Z
dc.date.issued2009-11
dc.description.abstractChanges in extracellular enzyme activities and microbial populations were studied during the normal composting and vermicomposting of fruitpulp, vegetable waste, groundnut husk and cowdung. The microbial numbers and their extracellular enzyme profiles showed relative variation and were found increasingly more abundant in vermicompost than in normal compost leading to the conversion of agricultural waste into value added product. In vermicompost, the maximum enzyme activities (cellulase, amylase, invertase, protease and urease) were observed during 21-35 days. The cellulase, amylase and protease activities of vermicompost reached the maximum values by 28th day of 1175, 825 µg reducing sugar g-1 hr-1 and 28 µ mol of aminoacid g-1 hr-1 of vermicompost samples respectively. Similarly the invertase and urease activities reached to peak values of 876 µg reducing sugar g-1 hr-1 and 197 µg -N g-1 ha-1 sample on 35th day respectively. Most of the enzymes showed correlation with change in number and types of different microbial groups like bacteria, fungi and actinomycetes during vermicomposting with maximum number of 126 x 106, 28 x 104 and 93 x 105 CFU g-1 sample respectively. In contrast delayed greatest enzyme activities were observed on 42-49th day i.e., last days of normal composting. Earthworms stimulated biochemical activity and nutrient cycling by 40-45% contributing to the reduction of period of degradation of agricultural wastes resulting in maturation of vermicompost by 28th day.en_US
dc.identifier.citationDevi S Haritha, Vijayalakshmi K, Jyotsna K Pavana, Shaheen S K, Jyothi K, Rani M Surekha. Comparative assessment in enzyme activities and microbial populations during normal and vermicomposting. Journal of Environmental Biology. 2009 Nov; 30(6): 1013-1017.en_US
dc.identifier.urihttps://imsear.searo.who.int/handle/123456789/146288
dc.language.isoenen_US
dc.source.urihttps://www.jeb.co.in/journal_issues/200911_nov09/paper_15.pdfen_US
dc.subjectNormal composten_US
dc.subjectVermi composten_US
dc.subjectCellulaseen_US
dc.subjectAmylaseen_US
dc.subjectInvertaseen_US
dc.subjectProteaseen_US
dc.subjectUreaseen_US
dc.titleComparative assessment in enzyme activities and microbial populations during normal and vermicomposting.en_US
dc.typeArticleen_US
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