The effects of various enzymatic saccharifications and microwave pretreatment durations on sugar yield and its property alterations of Chinese spirits distillers residues

Autor: Huawei Zeng, Hongkui He, Jingtong Ma, Runjie Cao, Xin Zeng, Bingyue Xin, Yanwen Wang, Jie Qiao, Shen Zhou, Tingting Dong, Anjun Li, Xian Yin
Jazyk: angličtina
Rok vydání: 2022
Předmět:
Zdroj: Journal of Taibah University for Science, Vol 16, Iss 1, Pp 1202-1212 (2022)
Druh dokumentu: article
ISSN: 16583655
1658-3655
DOI: 10.1080/16583655.2022.2154096
Popis: This study evaluated the effect of different enzymatic hydrolysis and different microwave pretreatment durations on the sugar yield of Chinese spirits distillers residues (CSDR). Addition of both α-amylase and cellulase in the enzymatic hydrolysis of distillers grains resulted in a higher yield of reducing sugar (145.74 ± 4.20 mg·g–1). Fourier transform infrared spectroscopy (FTIR) revealed that different enzyme treatments degraded different functional groups of the cellulose structure. Subsequently, the highest reducing sugar yield (181.33 ± 6.42 mg·g–1) was achieved at microwave pretreatment time of 6 min and was 1.29-fold higher than that of the untreated sample. The differences in the structural features of CSDRs under various microwave pretreatment durations were characterized by scanning electron microscopy, FTIR spectroscopy, and X-ray diffraction. The data revealed that the optimal microwave pretreatment time at 6 min could obviously remove lignin, and then obtain the highest CrI value, achieving the highest reducing sugar yield.
Databáze: Directory of Open Access Journals
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