High-efficiency fungistatic activity of vegetable waste-based humic acid related to the element composition and functional group structure
文献类型: 外文期刊
第一作者: Cao, Yaoyao
作者: Cao, Yaoyao;Jin, Hongmei;Zhu, Ning;Zhou, Zhumeng;Cao, Yaoyao;Jin, Hongmei;Zhu, Ning;Cao, Yaoyao;Zhu, Ning;Zhou, Zhumeng
作者机构:
关键词: Vegetable waste; Hydrothermal conversion; Humic acid; Physicochemical characteristics; Fungistatic activity
期刊名称:PROCESS SAFETY AND ENVIRONMENTAL PROTECTION ( 影响因子:7.8; 五年影响因子:7.5 )
ISSN: 0957-5820
年卷期: 2023 年 169 卷
页码:
收录情况: SCI
摘要: Vegetal foods are one of the most consumed commodities globally, accounting for more than 40 % of total food wastage. Hydrothermal conversion is an innovative transformation method towards effective utilization for vegetal waste to generate value-added products which are more eco-friendly and sustainable. In this study, the vegetable wastes of Chinese cabbage (C), broccoli (B) and sweet potato (S) were used to prepare humic acids (HAs) by hydrothermal conversion. The KOH concentration was the key factor affecting the preparation of HA. There was a significant difference in S element (p < 0.05), which followed the order of S-HA (1.48 %) > C-HA (0.57 %) > B-HA (0.43 %). The proportions of HAh, HAm, and HAl with molecular weights of > 100, 10-100, and < 10 kDa were 49.89-52.62 %, 23.70-27.92 %, and 18.75-21.13 %, respectively. HAs were rich in oxygencontaining functional groups such as C--O, C--C, and COOH. The fungistatic activities of Botrytis cinerea and Phytophthora capsici Leonian by S-HA were higher than those of other HAs. Through Mantel analysis and redundancy analysis, it was shown that element S and structure of aliphatic compounds had important effects on the fungistatic activity. In summary, hydrothermal conversion provided a new theory and technical guidance for the high-value utilization of vegetable waste.
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