{"title":"用水和碱逐步提取落叶松木材中的半纤维素及其糖成分","authors":"Xiaoyan Zhang, Lanxing Du, Sijin Li","doi":"10.37763/wr.1336-4561/68.4.638649","DOIUrl":null,"url":null,"abstract":"The aim of the present study was to isolate hemicelluloses by stepwise extraction with water and alkali from larch (Larix principis-rupprechtiiMayr) sapwood and heartwood. Onewater-soluble arabinogalactan (AG) and three alkali-soluble hemicelluloses-arabinoglucuronoxylan (AGX), galactoglucomannan (GGM) and glucomannan (GM) were obtained. The yield of AG extracted with hot-water from larch heartwood was 7.57%, it was 17.96% in total of three alkali-extracted hemicelluloses. There was no significant difference in the yield of hemicelluloses from sapwood and heartwood. Monosaccharide compositions of thehemicelluloses were determined by high performance liquid chromatography after acid hydrolysis. The results showed that galactose and mannose were the main glycosyl units of hemicellulose, followed by xylose. Galactose mainly derived from AG, whereas mannose and xylose originated from alkali-extracted hemicelluloses.","PeriodicalId":245216,"journal":{"name":"WOOD RESEARCH 68(4) 2023","volume":"33 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"STEPWISE EXTRACTION OF HEMICELLULOSES WITH WATER AND ALKALI FROM LARCH WOOD AND THEIR SUGAR COMPOSITIONS\",\"authors\":\"Xiaoyan Zhang, Lanxing Du, Sijin Li\",\"doi\":\"10.37763/wr.1336-4561/68.4.638649\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"The aim of the present study was to isolate hemicelluloses by stepwise extraction with water and alkali from larch (Larix principis-rupprechtiiMayr) sapwood and heartwood. Onewater-soluble arabinogalactan (AG) and three alkali-soluble hemicelluloses-arabinoglucuronoxylan (AGX), galactoglucomannan (GGM) and glucomannan (GM) were obtained. The yield of AG extracted with hot-water from larch heartwood was 7.57%, it was 17.96% in total of three alkali-extracted hemicelluloses. There was no significant difference in the yield of hemicelluloses from sapwood and heartwood. Monosaccharide compositions of thehemicelluloses were determined by high performance liquid chromatography after acid hydrolysis. The results showed that galactose and mannose were the main glycosyl units of hemicellulose, followed by xylose. Galactose mainly derived from AG, whereas mannose and xylose originated from alkali-extracted hemicelluloses.\",\"PeriodicalId\":245216,\"journal\":{\"name\":\"WOOD RESEARCH 68(4) 2023\",\"volume\":\"33 1\",\"pages\":\"0\"},\"PeriodicalIF\":0.0000,\"publicationDate\":\"1900-01-01\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"WOOD RESEARCH 68(4) 2023\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/10.37763/wr.1336-4561/68.4.638649\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"WOOD RESEARCH 68(4) 2023","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.37763/wr.1336-4561/68.4.638649","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
STEPWISE EXTRACTION OF HEMICELLULOSES WITH WATER AND ALKALI FROM LARCH WOOD AND THEIR SUGAR COMPOSITIONS
The aim of the present study was to isolate hemicelluloses by stepwise extraction with water and alkali from larch (Larix principis-rupprechtiiMayr) sapwood and heartwood. Onewater-soluble arabinogalactan (AG) and three alkali-soluble hemicelluloses-arabinoglucuronoxylan (AGX), galactoglucomannan (GGM) and glucomannan (GM) were obtained. The yield of AG extracted with hot-water from larch heartwood was 7.57%, it was 17.96% in total of three alkali-extracted hemicelluloses. There was no significant difference in the yield of hemicelluloses from sapwood and heartwood. Monosaccharide compositions of thehemicelluloses were determined by high performance liquid chromatography after acid hydrolysis. The results showed that galactose and mannose were the main glycosyl units of hemicellulose, followed by xylose. Galactose mainly derived from AG, whereas mannose and xylose originated from alkali-extracted hemicelluloses.
求助内容：
应助结果提醒方式：
京公网安备 11010802042870号
