基于莽草酸途径评估不同物料堆肥过程中腐殖物质形成的差异。
Evaluating differences in humic substances formation based on the shikimic acid pathway during different materials composting.
作者信息
Zhang Wenshuai, Zhao Yue, Lu Qian, Feng Wenxuan, Wang Liqin, Wei Zimin
机构信息
College of Life Science, Northeast Agricultural University, Harbin 150030, China.
College of Life Sciences and Technology, Harbin Normal University, Harbin 150025, China.
出版信息
Bioresour Technol. 2022 Nov;364:128060. doi: 10.1016/j.biortech.2022.128060. Epub 2022 Oct 1.
This study aimed to evaluate differences in humic substance (HS) formation based on the shikimic acid pathway (SAP) during five different materials composting. The results showed that compared with other three materials, gallic acid, protocatechuic acid and shikimic acid of the SAP products in lawn waste (LW) and garden waste (GW) compost decreased significantly. Furthermore, as important indicators for evaluating humification, humic acid and degree of polymerization increased by 39.4%, 79.5% and 21.8%, 87.9% in LW and GW, respectively. Correlation analysis showed that SAP products were strongly correlated with HS fractions in LW and GW. Meanwhile, network analysis indicated that more core bacteria associated with both SAP products and HS were identified in LW and GW. Finally, the structural equation model proved that SAP had more significant contribution to humification improvement in LW and GW. These findings provided theoretical foundation and feasible actions to improve compost quality by the SAP.
本研究旨在评估五种不同材料堆肥过程中基于莽草酸途径（SAP）的腐殖质（HS）形成差异。结果表明，与其他三种材料相比，草坪废弃物（LW）和园林废弃物（GW）堆肥中SAP产物的没食子酸、原儿茶酸和莽草酸显著减少。此外，作为评估腐殖化的重要指标，腐殖酸和聚合度在LW和GW中分别提高了39.4%、79.5%和21.8%、87.9%。相关性分析表明，LW和GW中SAP产物与HS组分密切相关。同时，网络分析表明，在LW和GW中鉴定出更多与SAP产物和HS均相关的核心细菌。最后，结构方程模型证明，SAP对LW和GW中腐殖化改善的贡献更为显著。这些发现为通过SAP改善堆肥质量提供了理论基础和可行措施。
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