Changes in enzymatic activities and microbial properties in vermicompost of water hyacinth as affected by pre-composting and fungal inoculation: A comparative study of ergosterol and chitin for estimating fungal biomass |
| |
| Authors: | P. Pramanik |
| |
| Affiliation: | 1. State Key Laboratory of Microbial Technology, Shandong University, Jinan, Shandong, China;2. National Glycoengineering Research Center, Shandong University, Jinan, Shandong, China;1. Department of Microbiology and Parasitology, China Medical University, No.77 Puhe Road, Shenyang 110122, Liaoning Province, China;2. National Key Laboratory of Biochemical Engineering, National Engineering Research Center for Biotechnology (Beijing), Key Laboratory of Biopharmaceutical Production & Formulation Engineering, PLA, Institute of Process Engineering, Chinese Academy of Sciences, No. 1 North 2nd Street, Beijing 100190, China;1. Soil Ecology Lab, College of Resources and Environmental Sciences, Nanjing Agricultural University, Nanjing 210095, People’s Republic of China;2. Jiangsu Collaborative Innovation Center for Solid Organic Waste Resource Utilization, Nanjing 210014, People’s Republic of China;3. Suzhou Kanglv Agricultural Development Co., Ltd, Suzhou 215155, People’s Republic of China;1. College of Biological and Agricultural Engineering, Jilin University, Changchun 130022, China;2. Department of Food Science, Nutrition and Health Promotion, Mississippi State University, MS 39762, United States;3. Logistics College, Beijing Wuzi University, Beijing 101149, China |
| |
| Abstract: | In this experiment, three different fungal species, viz. Trichoderma viridae, Aspergillus niger and Phanerochaete chrysosporium, were inoculated in 7 day and 15 day partially decomposed water hyacinth to study their effect on enzymatic activities, microbial respiration and fungal biomass of the final stabilized product. The results suggested that increasing the duration of pre-composting from 7 days to 15 days did not show any significant effect on the activities of hydrolytic enzymes. Inoculation of fungi significantly (P ? 0.05) increased cellulase, protease and acid and alkaline phosphatase activities. The highest value of ergosterol was recorded in A. niger-inoculated vermicomposts. Inoculation of P. chrysosporium in initial organic waste registered the highest chitin content in vermicompost. A comparison of fungal biomass and chitin content revealed a conversion factor of 2.628 with a standard deviation of 0.318. Due to significant correlation (r = 0.864), this conversion factor allows for the calculation of fungal biomass from chitin, which is comparatively more stable than ergosterol. |
| |
| Keywords: | |
| 本文献已被 ScienceDirect 等数据库收录！ |
|
