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| Relationship between bioenzyme activities and degradation of organic substances during cassava dregs composting process |
| Received:July 11, 2016 |
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| KeyWord:compost;cassava dregs;microbial inoculum;organic substances;enzymatic activity |
| Author Name | Affiliation | | XU Li-ming | Biology Institute, Guangxi Academy of Sciences, Nanning 530007, China | | CHENG Chun-yan | Biology Institute, Guangxi Academy of Sciences, Nanning 530007, China | | LU Han-lang | Biology Institute, Guangxi Academy of Sciences, Nanning 530007, China | | MO Qi-hui | Biology Institute, Guangxi Academy of Sciences, Nanning 530007, China | | WEI Xing-ming | Biology Institute, Guangxi Academy of Sciences, Nanning 530007, China |
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| Abstract: |
| With additional microbial inoculants and manual turning in the cassava dregs composting, the starting material will be well transformed through a variety of biological and biochemical processes.In this study, the temperature of different phases of composting was measured, as well as the activities of cellulase, protease, and amylase; further, the concentration of starch, cellulose, hemicelluloses, lignin, nitrate nitrogen(NO3--N),ammonia nitrogen(NH4+-N) were also analyzed. Then the correlation of all the traits investigated above was analyzed.The results showed that, in comparison to the control, the compost with additional microbial inoculants had a sharper increasing of the temperature, and maintained a longer time of a higher maximum temperature phase during composting,resulting the harmless composting production. The activities of cellulase, protease, and amylase appeared coincidently with the highest temperature period. There were a significantly negative correlation between organic substances content and bioenzyme activities, indicating that the degradation of organic substances could be characterized by bioenzymes. Thus, the activity of biological enzyme could be used as index for cassava dregs decomposition process. |
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