AI Article Synopsis
- Metabolites from the shikimic acid (SA) pathway can serve as precursors for humic substances, yet there has been limited research on this pathway during composting.
- During the composting process, key metabolites like SA, protocatechuic acid (PA), and gallic acid (GA) significantly decreased, with decreases of 57.09%, 72.27%, and 54.04%, respectively.
- The study identifies organic matter and pH as crucial factors driving the SA pathway, with material complexity affecting PA, while the influence of various factors on GA differed based on material type, suggesting new research directions for enhancing SA metabolism in composting.
Article Abstract
Metabolites of shikimic acid (SA) pathway can be used as humic substance (HS) precursors. Due to the complexity of SA anabolism, there were few studies on SA pathway during composting. The aim of this study was to identify the key drivers of SA pathway during different materials composting. During composting, the SA, protocatechuic acid (PA) and gallic acid (GA) decreased by 57.09%, 72.27% and 54.04% on average, respectively. The structural equation model showed that SA had key driving factors (organic matter and pH) during lawn waste composting. In addition, the complexity of material structure was the main factor affecting PA driving factors. The factors and degree of influence on GA varied with different materials. Accordingly, this study provided theoretical support for the improvement of SA metabolic intensity by single material and mixed material composting, and further provided a new direction for future HS research.
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| http://dx.doi.org/10.1016/j.biortech.2022.127579 | DOI Listing |
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