Procedures for Analysis of Solids and Liquors from Cellulosic Sources.

摘要

Cellulosic materials are ground or milled to a suitable size. Ash analysis is made by determination of the residue after ignition at 600exp 0 C. Extractives are defined as the material removed by extraction with the benzene/ethanol azeotrope. The lignin is determined as the acid-insoluble residue after 2-stage hydrolysis with H sub 2SO sub 4 . The carbohydrate content is determined as the monomer sugars generated by the hydrolysis. The liquors from the acid or base treatment or cellulosic materials are analyzed for the monomer and polymer sugar content. (ERA citation 03:023310)