Details

Autor(en) / Beteiligte

• Guo, Fenglei
• Wang, Chen
• Wang, Shuang
• Wu, Shuaipeng
• Zhao, Xiaorong
• Li, Guitong

Titel

Fenton-ultrasound treatment of corn stalks enhances humification during composting by stimulating the inheritance and synthesis of polyphenolic compounds—preliminary evidence from a laboratory trial

Ist Teil von

• Chemosphere (Oxford), 2024-06, Vol.358, p.142133-142133, Article 142133

Ort / Verlag

England: Elsevier Ltd

Erscheinungsjahr

2024

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• The impact of Fenton-ultrasound treatment on the production of polyphenols and humic acid (HA) during corn stalk composting was investigated by analyzing the potential for microbial assimilation of polysaccharides in corn stalks to generate polyphenols using a13C-glucose tracer. The results showed that Fenton-ultrasound treatment promoted the decomposition of lignocellulose and increased the HA content, degree of polymerization (DP), and humification index (HI). The primary factor could be attributed to Fenton-ultrasound treatment-induced enhanced the abundance of lignocellulose-degrading microorganisms, as Firmicutes, Actinobacteria phylum and Aspergillis genus, which serve as the primary driving forces behind polyphenol and HA formation. Additionally, the utilization of a13C isotope tracer revealed that corn stalk polysaccharide decomposition products can be assimilated by microbes and subsequently secrete polyphenolic compounds. This study highlights the potential of microbial activity to generate phenolic compounds, offering a theoretical basis for increasing polyphenol production and promoting HA formation during composting. [Display omitted] •The influence of Fenton-ultrasound pretreatment on straw regarding the humification process in composting has been explored.•13C labeled technology can preliminarily determine that microorganisms can synthesize and release polyphenolic compounds.•The increased availability of carbohydrates in later stages of composting may enhance polyphenol production and humification.