The effects of enzymes on organic material degradation and microbial communities metabolic profiles during composting process were studied using Biolog method, and together with cluster analysis and PCA. The results showed that, adding the enzyme solution in the composting could increase the degradation rate of organic material by 4.90%. The microbial community metabolic results of cluster analysis showed that when the enzyme solution was added into the compost, the carbon metabolic capability of intermediate metabolite was improved. The results of PCA indicated that when the enzyme solution was added, microbial communities enhanced the metabolic capability of miscellaneous, polymers, amino acids and amides carbon substrates, which results in the efficient degradation of organic substance. In addition, cluster analysis of each composting phase showed that the effects of the enzymes solution on microbial community metabolism were mainly observed on 6 d and 30 d, which promoted the composting process.
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