Cellulose fibers extracted from sesame hull using subcritical water as a pretreatment
Cellulose fibers extracted from sesame hull using subcritical water as a pretreatment
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亚临界水预处理从芝麻皮中提取纤维素纤维
DOI：
10.1016/j.arabjc.2021.103178
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发表时间：
2021-04
影响因子：
6
通讯作者：
Wang Xue-De
中科院分区：
文献类型：
--
作者：
Zhang Run-Yang;Liu Hua-Min;Hou Jie;Yao Yong-Gang;Ma Yu-Xiang;Wang Xue-De
芝麻加工设施通常将芝麻籽壳（SH）作为废物或动物饲料丢弃。然而，这些外壳富含纤维素，使它们对食品工业具有潜在的价值。本研究首次研究了亚临界水和碱预处理对SH纤维素提取的影响。结果表明，亚临界水预处理得到的SWCs（纤维素，9.2-11.6%）与碱预处理得到的ATC（纤维素，10.1%）的产率接近。SWCs的结晶度（68.7-75.8%）显著高于ATC（60.9%）。根据傅立叶变换红外光谱和扫描电子显微镜照片，亚临界水预处理比碱更显着地干扰了非纤维素成分的去除。此外，SWC的直径小于ATC，并且所获得的SWC在热稳定性方面与ATC相当。本研究表明，亚临界水作为一种环境友好的溶剂，可以用来从SH中提取高质量的纤维素。此外，亚临界水比碱更有效，这表明它可以在食品工业中更广泛地用于从其他来源生产纤维素。
Sesame processing facilities typically discard sesame seed hulls (SH) as waste or animal feed. However, these hulls are rich in cellulose and make them potentially valuable to the food industry. This study for the first time studied the effect of subcritical water (SW) and alkali (AT) pretreatment on extraction of purified cellulose from SH. The results indicated that the yield of SWCs (cellulose obtained by subcritical water pretreatment, 9.2–11.6%) was close to that of ATC (cellulose obtained by alkali pretreatment, 10.1%). Crystallinity of SWCs (68.7–75.8%) was significantly higher than ATC (60.9%). Subcritical water pretreatments interfered more significantly than alkali with the removal of non-cellulosic components according to Fourier transform infrared spectrometry and scanning electron microscope photographs. In addition, the diameter of the SWC was smaller than ATC, and the obtained SWC was comparable to ATC in terms of thermal stability. This study shows that subcritical water, as an environmentally friendly solvent, can be used to extract good quality cellulose from SH. In addition, subcritical water is more effective than alkali, suggesting it could be used more widely in the food industry for producing cellulose from other sources.
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作者：
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