Identification of organooxygen compounds in the methanol-soluble portion from the methanolysis of pretreated rice straw with Trichoderma sp. AH

Effect of pretreatment with Trichoderma sp. AH on the structure of rice and wheat straw

“…As shown in Fig. 3, higher oxygen content is present in both the original and pre-treated RS and WS, which is consistent with the results of elemental content analysis in our previous studies (Zheng et al, 2016;Zheng et al, 2019). Compared to the original RS, the relative concentrations of oxygen and nitrogen in the pre-treated RS appeared to drop while the relative carbon content tended to rise.…”

“…Depolymerization of the straws' crystal structure, as indicated by XRD evaluation, was the primary cause of the decreased crystallinity, showing that PT with Trichoderma sp. AH effectively upsets the structure, which is consistent with the SEM ndings obtained in our previous studies(Zheng et al, 2016;Zheng et al, 2019). The predominant effect of Trichoderma sp.…”

“…AH could only partially decompose RS and WS. At the same time, it did not in uence the group composition of raw and pre-treated straws, which is consistent with the group composition analysis in our earlier study(Zheng et al, 2016;Zheng et al, 2019). According to the XRD analysis, the crystal structures of RS and WS were only marginally impacted by the presence of PT in conjunction with Trichoderma sp.…”

“…AH largely degraded RS and WS to mono-oligomers and short oligomers, improving supercritical methanolysis conversion and Trichoderma sp. AH PT boosted RS and WS methanolysis conversion(Zheng et al, 2016;Zheng et al, 2017;Zheng et al, 2019;Zheng et al, 2020). This enhancement was mostly related to the RS and WS anatomical changes during PT.…”