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| Study on the Sugar Re-extraction of Xylose Mother Liquor from Eucalyptus Pre-hydrolysis |
| Received:August 15, 2024 |
| DOI：10.11980/j.issn.0254-508X.2025.01.007 |
| Key Words:eucalyptus hemicellulose xylose mother liquor fermentation |
| Author Name | Affiliation | Postcode | | LU Qinghui* | Shandong Sun Paper Industry Joint Stock Co., Ltd., Jining, Shandong Province,272100
Guangxi Sun Paper Industry Co., Ltd., Beihai, Guangxi Zhuang Autonomous Region, 536000 | 536000 | | CAO Yanjun | Shandong Sun Paper Industry Joint Stock Co., Ltd., Jining, Shandong Province,272100 | 272100 | | TONG Qingwen | Shandong Sun Paper Industry Joint Stock Co., Ltd., Jining, Shandong Province,272100 | 272100 |
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| Abstract:This study analyzed the economics of sugar re-extraction of xylose mother liquor from eucalyptus pre-hydrolysis， investigated schemes to enhance the xylose content in the mother liquor， and designed a feasible sugar re-extraction process， explored the biochemical characteristics of a patent strain. Based on the analysis， yeast with specific assimilation of galactose and mannose were used to consume the major heteropolysaccharides glucose and mannose in the mother liquor， thereby increasing the xylose content. Subsequently， acid hydrolysis was employed to break down the abundant hemi cellulose intermediates in the mother liquor into monosaccharides such as xylose， mannose， and galactose， increasing the xylose content to 79.03%. The entire process increased the xylose content by 25.79 percentage points， achieving the goal of sugar re-extraction of xylose mother liquor. |
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