School of Chemistry and Chemical Engineering, Guangxi University, Nanning 530004, China.
School of Chemistry and Chemical Engineering, Guangxi University, Nanning 530004, China; Key Laboratory of Guangxi Biorefinery, Guangxi University, Nanning 530004, China.
Bioresour Technol. 2020 Jul;308:123279. doi: 10.1016/j.biortech.2020.123279. Epub 2020 Mar 31.
The purpose of this study was to investigate the effect of sucrose ester (SE) addition on the physico-chemical parameters, organic matter (OM) biodegradation and related bacterial communities structure in dairy manure and cassava residuals co-composting. The biodegradation rates of OM, dissolved organic matters (DOM) and lignocellulose in SE (16.34%, 44.11% and 26.73%) group were higher than those in CK (14.71%, 39.11% and 19.90%). In addition, the content of humic substances (HS) (36.34%) in SE was obviously higher than that in CK (17.68%). The relative abundance of bacterial community in SE changed, in which the abundance of Firmicutes and Actinobacteria increased, while the amount of Blastomonas decreased. Redundancy analysis indicated Bacillus and Acinetobacter were positively correlated with the temperature and OM, whereas Azomonas and Luteimonas showed a positive relation with pH. In conclusion, the amendment of SE accelerated the degradation and conversion of organic matters, enhanced the formation of HS and improved the quality of compost.
本研究旨在探讨蔗糖酯（SE）添加对奶牛粪便和木薯渣共堆肥中理化参数、有机质（OM）生物降解及相关细菌群落结构的影响。SE（16.34%、44.11%和 26.73%）组中 OM、溶解有机物（DOM）和木质纤维素的生物降解率高于 CK（14.71%、39.11%和 19.90%）。此外，SE 中腐殖质（HS）（36.34%）的含量明显高于 CK（17.68%）。SE 中细菌群落的相对丰度发生了变化，其中厚壁菌门和放线菌门的丰度增加，而芽单胞菌门的数量减少。冗余分析表明芽孢杆菌属和不动杆菌属与温度和 OM 呈正相关，而 Azomonas 和 Luteimonas 与 pH 呈正相关。总之，SE 的添加加速了有机物的降解和转化，增强了 HS 的形成，提高了堆肥的质量。
