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| Studies on Lignin and Hemicellulose of Pennisetum Sinese Grasses |
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| DOI：10.11980/j.issn.0254-508X.2016.08.001 |
| Key Words:Pennisetum sinese grasses ultrastructure lignin distribution hemicellulose |
| Fund Project:本课题得到国家自然科学基金资助项目：氧气/离子液体体系协同酶处理克服木质纤维素结构顽固性及其酶解分离机制的研究(31370580)；速生材高得率浆的酶精制及纤维组分中纤维聚糖结构的微观变化机制(31270627)的资助。 |
| Author Name | Affiliation | | 鲁 南1,2 | 1.天津科技大学造纸学院,天津,300457；2.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 | | 沈 锋2 | 2.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 | | 王胜丹2 | 2.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 | | 杨桂花2 | 2.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 | | 陈嘉川2,* | 2.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 |
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| Abstract:In this study, the lignin structure units of Pennisetum sinese grasses were analyzed by HPLC. Results indicated that the content of G-lignin in the raw material was higher, at 75.63%, the contents H-lignin and S-lignin were less, at 10.52% and 13.85% respectivly. The ultrastructure of the grass’s fibers was studied by TEM, the observation confirmed that the S1 layer of the fiber’s cell wall was thin, S2 layer was thick. The thickness of S2 layer was about four times of S1 layer, accounted for more than 80% of the cell wall. The S3 layer was the thinnest. The infrared spectrum of the lignin in raw material, lignin in the kraft pulp and lignin in NaOH-AQ pulp were analyzed. The change of lignin structure in the processes of kraft pulping and NaOH-AQ pulping was studied. The monosaccharide composition of Pennisetum sinese grasses’ hemicellulose was analyzed by ion chromatography (IC). The results showed that xylose was the main monosaccharides with the content of 56.84%, the content of glucose was 42.48%, and arabinose 0.66%. Mannose and galactose were undetected, indicating the raw materials did not contain the mannose and galactose or only contained trace content. |
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