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| Construction of a High-Efficiency Complex Microbial System to Degrade Cellulose and Chlortetracycline and Oxytetracycline in Compost |
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| KeyWord:complex microbial system；compost; cellulose; antibiotic; degradation bacteria; chlortetracycline; oxytetracycline |
| Author Name | Affiliation | | QIN Li | Agro-Environmental Protection Institute, the Ministry of Agriculture, Tianjin 300191, China | | GAO Ru-ying | College of Water Conservancy and Civil Engineering,China Agricultural University,Beijing 100083, China | | XU Ya-ping | Agro-Environmental Protection Institute, the Ministry of Agriculture, Tianjin 300191, China | | HU Ju | College of Resources and Environment Science,China Agricultural University,Beijing 100193, China |
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| Abstract: |
| Composting is an effective way to dispose animal manures. However, cellulose and antibiotics in the manures often impact the maturity speeds of composts. Here we built a complex microbial system capable of degrading cellulose and chlortetracycline（CTC） and oxytetracycline（OTC） efficiently in 4 types of thermophilic compost samples through several generations of portfolio optimization. This complex microbial system adapted a wider range of pH, and had strong stability. For the third generation, its medium pH reduced to 7.0 from initial 8.5 within 24 h of inoculation, stayed at 7.0 for 48 h and then raised to 8.0 after 72 h. The microbial system degraded filter paper by more than 90% in 3 days, and CTC and OTC by more than 50% in 7 days of inoculation. The results indicate that the constructed complex microbial system has stable capability of degrading cellulose and antibiotics（CTC and OTC）. |
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