FRACTIONATION OF WHEAT-STRAW MEAL AFTER PRETREATMENT WITH ACIDIFIED ZINC-CHLORIDE SOLUTIONS

Authors
SIMKOVIC I ANTAL M ALFOLDI J
Citation
I. Simkovic et al., FRACTIONATION OF WHEAT-STRAW MEAL AFTER PRETREATMENT WITH ACIDIFIED ZINC-CHLORIDE SOLUTIONS, Carbohydrate polymers, 23(2), 1994, pp. 111-114
Citations number
24
Categorie Soggetti
Chemistry Inorganic & Nuclear","Polymer Sciences
Journal title
Carbohydrate polymers → ACNP
ISSN journal
01448617
Volume
23
Issue
2
Year of publication
1994
Pages
111 - 114
Database
ISI
SICI code
0144-8617(1994)23:2<111:FOWMAP>2.0.ZU;2-4
Abstract
Wheat straw was treated with acidified ZnCl2 solutions and the fractio ns obtained were compared with results obtained by NaOH treatments. Th e yields of water-soluble polysaccharides are smaller but they are les s contaminated with lignin than analogous fractions obtained by NaOH t reatment. The molecular weights of the ZnCl2 fractions are greater tha n the NaOH-treated fractions. The arabinose and glucuronic acid residu es are hydrolysed from the polysaccharides by ZnCl2 treatment. Samples treated with ZnCl2 could be more effectively desalted by washing with ethanol than by precipitation in acetone. NaOH-pretreated samples cou ld not be desalted by washing with ethanol.