Activation effect of catechol on biotic and abiotic factors of humus formation during chicken manure composting

Qi, Haishi; Wang, Jialin; Zhang, Linyuan; Chen, Lihua; Zhao, Yue; Wei, Zimin

doi:10.1016/j.wasman.2022.06.014

Cited by 25 publications

(7 citation statements)

References 34 publications

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“…Furthermore, the supplementation of C-containing precursors, in conjunction with the formation of Al-C particles primarily facilitated by the interaction between gibbsite and precursors, demonstrated the ability to impede the loss of TOC content in the supernatant fluid, thereby enhancing C sequestration [28]. Qi et al [12] observed that incorporating catechol into chicken manure composting resulted in a reduction in organic matter loss and an increase in recalcitrant component levels.…”

Section: Discussionmentioning

confidence: 99%

“…However, the contribution of reducing sugars to HLS formation via the Maillard pathway in abiotic processes is unclear. Previous research has mainly focused on the abiotic formation of HSs by polyphenols [12], while studies on the abiotic formation of HSs by glucose have been limited [13]. In nature, metallic oxides coexist with organic matter and have been found to have varying degrees of influence on humification [14].…”

Section: Introductionmentioning

confidence: 99%

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Changes in the Glucose Concentration Affect the Formation of Humic-like Substances in Polyphenol–Maillard Reactions Involving Gibbsite

Wang,

Cui,

Zhou

et al. 2024

Molecules

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The polyphenol–Maillard reaction is considered one of the important pathways in the formation of humic-like substances (HLSs). Glucose serves as a microbial energy source that drives the humification process. However, the effects of changes in glucose, particularly its concentration, on abiotic pathways remain unclear. Given that the polyphenol–Maillard reaction requires high precursor concentrations and elevated temperatures (which are not present in soil), gibbsite was used as a catalyst to overcome energetic barriers. Catechol and glycine were introduced in fixed concentrations into a phosphate-buffered solution containing gibbsite using the liquid shake-flask incubation method, while the concentration of glucose was controlled in a sterile incubation system. The supernatant fluid and HLS components were dynamically extracted over a period of 360 h for analysis, thus revealing the influence of different glucose concentrations on abiotic humification pathways. The results showed the following: (1) The addition of glucose led to a higher degree of aromatic condensation in the supernatant fluid. In contrast, the supernatant fluid without glucose (Glu0) and the control group without any Maillard precursor (CK control group) exhibited lower degrees of aromatic condensation. Although the total organic C (TOC) content in the supernatant fluid decreased in all treatments during the incubation period, the addition of Maillard precursors effectively mitigated the decreasing trend of TOC content. (2) While the C content of humic-like acid (CHLA) and the CHLA/CFLA ratio (the ratio of humic-like acid to fulvic-like acid) showed varying increases after incubation, the addition of Maillard precursors resulted in a more noticeable increase in CHLA content and the CHLA/CFLA ratio compared to the CK control group. This indicated that more FLA was converted into HLA, which exhibited a higher degree of condensation and humification, thus improving the quality of HLS. The addition of glycine and catechol without glucose or with a glucose concentration of 0.06 mol/L was particularly beneficial in enhancing the degree of HLA humification. Furthermore, the presence of glycine and catechol, as well as higher concentrations of glucose, promoted the production of N-containing compounds in HLA. (3) The presence of Maillard precursors enhanced the stretching vibration of the hydroxyl group (–OH) of HLA. After the polyphenol–Maillard reaction of glycine and catechol with glucose concentrations of 0, 0.03, 0.06, 0.12, or 0.24 mol/L, the aromatic C structure in HLA products increased, while the carboxyl group decreased. The presence of Maillard precursors facilitated the accumulation of polysaccharides in HLA with higher glucose concentrations, ultimately promoting the formation of Al–O bonds. However, the quantities of phenolic groups and phenols in HLA decreased to varying extents.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Changes in the Glucose Concentration Affect the Formation of Humic-like Substances in Polyphenol–Maillard Reactions Involving Gibbsite

Wang,

Cui,

Zhou

et al. 2024

Molecules

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“…The solution obtained was humic acid (HA). The carbon concentrations (g/kg) of the WSS, HE, HA, and Hu components (C WSS , C HE , C HA , and C Hu ) were all determined by the TOC analyzer, in which the C FA (C FA = C HE − C HA ) and the degree of polymerization (C HA /C FA ratio) were calculated [23]. All analyses were carried out in triplicate, and the mean values are presented.…”

Section: Discussionmentioning

confidence: 99%

Effect of Metal Cations with Different Valences on the Humus Composition of Dark-Brown Soil Mixed with Tilia Wood Shavings

Wang,

Liu,

Bai

et al. 2023

Agronomy

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To clarify the contribution of the bridging effect from three metal cations (K+, Mn2+, and Fe3+) on the humification of lignin-rich Tilia wood shavings and further enrich the theory of lignin humification, an indoor incubation method with constant temperature and humidity was adopted. K+, Mn2+, and Fe3+ served as additives, with CK as the control for studying the differential influence of metal cations with different valences on the humus composition of dark-brown soil mixed with Tilia wood shavings. The change in the C contents of water-soluble substance (CWSS), humic-extracted acid (CHE) and humin (CHu), ∆logK value of HE, atomic ratio and FTIR spectra of humic acid (HA), and the ratio of C content of humic acid to fulvic acid (CHA/CFA) of dark-brown soil mixed with Tilia wood shavings were analyzed after 0, 30, 80, and 150 days of incubation, and the following conclusions were reached: (1) The addition of metal cations, regardless of their valence, could effectively improve the microbial utilization and consumption of WSS, and the effect was as follows: Fe3+ > Mn2+ > K+. The addition of three metal cations could effectively inhibit mineralization and reduce the loss of TOC, and the effect could be seen as follows: Fe3+ > Mn2+ > K+. (2) Although the CHE content first decreased and then increased with incubation, the addition of Fe3+ and Mn2+ ions increased the CHE content, showing that Fe3+ > Mn2+, and K+ ions had no significant effect. Throughout the incubation, the structure of HE molecules changed first via a complex process and then through a simple process. Comparing the change before and after the incubation, the overall structure of HE molecules tended to be simpler with the CK control, and HE became more complicated with the addition of Fe3+ and Mn2+; however, the addition of K+ had little effect on the structure of HE molecules. (3) At the end of the incubation, the addition of Fe3+, Mn2+, and K+ ions strengthened the molecular condensation of HA and its aromatization degree, while the CK control without any added metal cations caused HA molecules to decompose and obtain a greater aliphatic degree. In addition, the number of O-containing functional groups and N-containing compounds in HA molecules increased to varying degrees regardless of which metal cation was added. The decomposition of Tilia wood chips led to a partial entry of the decomposition products into the HA component, which was then reconsumed by continuous mineralization. After incubation, the polysaccharides in HA molecules were consumed only with the addition of Mn2+ ions. Fe3+ and Mn2+ ions had greater advantages in increasing the CHA/CFA ratio and improving the humus quality than K+ ions. (4) The addition of metal cations could effectively inhibit the mineralization and decomposition of the Hu component, among which Fe3+ ions had the most significant effect, followed by Mn2+ ions. Compared to monovalent cations (K+), polyvalent cations (Fe3+ and Mn2+) had the advantage of a bridging effect, and their addition promoted the microbial utilization of WSS, effectively reduced the loss of TOC, increased the CHE content, complicated its molecular structure, improved the humus quality, and inhibited the decomposition of Hu. Regardless of which metal cation was added, the degree of molecular polycondensation and aromatization of HA was enhanced, and the number of O-functional groups and N-containing compounds in HA molecules increased.

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“…Moreover, mycotoxin-degrading enzymes that are synthesized and secreted by cells can be partially inactivated during AD or composting. This is due to the formation of non-covalent complexes of these enzymes (most often hydrolases) with humic substances formed in reaction media during degradation of organic matter under the action of anaerobic consortia [ 97 ].…”

Section: Enzymes As Destructors Of Mycotoxins In Poultry Manure Under...mentioning

confidence: 99%

Destruction of Mycotoxins in Poultry Waste under Anaerobic Conditions within Methanogenesis Catalyzed by Artificial Microbial Consortia

Ефременко

Senko

Maslova

et al. 2023

Toxins

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To reduce the toxicity of modern feeds polluted by mycotoxins, various sorbents are added to them when feeding animals. A part of the mycotoxins is excreted from the body of animals with these sorbents and remains in the manure. As a result, bulk animal wastes containing mixtures of mycotoxins are formed. It is known that it is partially possible to decrease the initial concentration of mycotoxins in the process of anaerobic digestion (AD) of contaminated methanogenic substrates. The aim of this review was to analyze the recent results in destruction of mycotoxins under the action of enzymes present in cells of anaerobic consortia catalyzing methanogenesis of wastes. The possible improvement of the functioning of the anaerobic artificial consortia during detoxification of mycotoxins in the bird droppings is discussed. Particular attention was paid to the possibility of effective functioning of microbial enzymes that catalyze the detoxification of mycotoxins, both at the stage of preparation of poultry manure for methanogenesis and directly in the anaerobic process itself. The sorbents with mycotoxins which appeared in the poultry wastes composed one of the topics of interest in this review. The preliminary alkaline treatment of poultry excreta before processing in AD was considered from the standpoint of effectively reducing the concentrations of mycotoxins in the waste.

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Activation effect of catechol on biotic and abiotic factors of humus formation during chicken manure composting

Cited by 25 publications

References 34 publications

Changes in the Glucose Concentration Affect the Formation of Humic-like Substances in Polyphenol–Maillard Reactions Involving Gibbsite

Changes in the Glucose Concentration Affect the Formation of Humic-like Substances in Polyphenol–Maillard Reactions Involving Gibbsite

Effect of Metal Cations with Different Valences on the Humus Composition of Dark-Brown Soil Mixed with Tilia Wood Shavings

Destruction of Mycotoxins in Poultry Waste under Anaerobic Conditions within Methanogenesis Catalyzed by Artificial Microbial Consortia

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