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| Dissolution and Depolymerization of Hemicelluloses of Acacia Wood during Autohydrolysis |
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| DOI：10.11981/j.issn.1000-6842.2015.02.6 |
| Key Words:pre-hydrolysis; acacia wood; hemicelluloses; oligomer |
| Fund Project:国家自然科学基金项目(31470603)；国家重点实验室基金项目(201449)；教育部重点实验室基金项目(KF201200)。 |
| Author Name | Affiliation | | 赵则孟1 | 1.大连工业大学轻工与化学工程学院, 辽宁大连, 116034 | | 石海强1,2,3, * | 1.大连工业大学轻工与化学工程学院, 辽宁大连, 116034；2.华南理工大学制浆造纸工程国家重点实验室, 广东广州, 510640；3.齐鲁工业大学制浆造纸科学与技术教育部重点实验室, 山东济南, 250353 | | 刘 钢1 | 1.大连工业大学轻工与化学工程学院, 辽宁大连, 116034 | | 李 娜1 | 1.大连工业大学轻工与化学工程学院, 辽宁大连, 116034 | | 张 健1 | 1.大连工业大学轻工与化学工程学院, 辽宁大连, 116034 | | 牛梅红1 | 1.大连工业大学轻工与化学工程学院, 辽宁大连, 116034 | | 平清伟1 | 1.大连工业大学轻工与化学工程学院, 辽宁大连, 116034 |
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| Abstract: |
| Acacia wood was pre-hydrolyzed under various temperatures and time, the content of monomeric sugar and oligomeric sugar in prehydrolysate, and also the retention rate of glucose and xylose in the hydrolyzed residues were analyzed by using ion chromatography, the influence of hydrolysis temperature and time on the dissolution and depolymerization of hemicelluloses were investigated. The results showed that the content of oligomeric sugar in the hydrolyzate reached the maximum of 17.29 g/L, among which xylo oligomer was 12.45 g/L when hydrolysis temperature and time were 170℃ and 60 min respectively. The content of total sugars (including monomeric and oligomeric sugar) reached the maximum of 25.86 g/L at 170℃ and 80 min reaction time. A maximun total contents of oligomeric sugar and monomeric sugar were found in prehydrolysate. After this maximun value appearing, by further increasing pre-hydrolysis temperature and reaction time, the dissolution of hemicellulose was improved, but the content of oligomeric sugar and total sugars were decreased. |
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