Abstract
In this study, the combined addition of Bacillus licheniformis HDYM-04 and Bacillus subtilis ZC-01 to flax degradation increased the degradation rates of pectin (74.7 %) and pectinic acid (59.3 %) and increased the maximum activities of pectinase (610.66 ± 7.03 U/mL) and mannanase (656.97 ± 13.16 U/mL). 16S rRNA sequencing showed that the added bacterial agent (Bacillus) was the dominant bacterium, and its addition increased the relative abundance (RA) of Firmicutes and decreased the RA of Bacteroidetes. The core bacterial community linked to degradation (Firmicutes) was determined by RDA. Network analysis showed that the number of bacteria related to pectin and hemicellulose degradation increased with the addition of the bacteria combination. SEM analysis showed that Bacillus was positively correlated with the degradation of pectic substances. These results provide new ideas for improving the utilization of agricultural waste resources and promoting sustainable development in modern agriculture.
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