ISOLATION AND CHARACTERIZATION OF LIGNIN FROM RICE HULL

被引：2

作者：

RODRIGUEZVAZQUEZ, R ^{[1
]}

AREYZAGA, M ^{[1
]}

PARADA, A ^{[1
]}

RIOSLEAL, E ^{[1
]}

ANGUISTERRAZAS, C ^{[1
]}

机构：

[1] UPALM,INST POLITECN NACL,ESIQIE,MEXICO CITY 07360,DF,MEXICO

来源：

JOURNAL OF THE SCIENCE OF FOOD AND AGRICULTURE | 1993年 / 62卷 / 01期

关键词：

LIGNIN; CHARACTERIZATION; DIOXANE ACIDOLYSIS; RICE HULL; METHOXYL; HYDROXYL; GUAIACYL; SYRINGYL; CONIFERYL;

D O I：

10.1002/jsfa.2740620116

中图分类号：

S [农业科学];

学科分类号：

09 ;

摘要：

Lignin was isolated from rice hull by dioxane acidolysis with concentrations of HCl in the solvent medium of 1.88, 3.76, 5.66, 7.56, or 11.40 g conc HCl litre-1, and extraction times of 1 h and 2 h. Phenolic. methoxyl, and guaiacyl group contents were slightly low at 2 h of extraction, furthermore. at 2 h, the guaiacyl content of lignin extracted was reduced as the acid concentration was increased. The coniferyl group content was affected by acid concentration and extraction time. A maximum lignin yield was observed at the 5.66 g conc HCl litre-1 level and 2 h.

引用

页码：101 / 104

页数：4