Alkali-induced conversion of beta-chitin to alpha-chitin.

Abstract:

:Crystal conversion of beta-chitin to alpha-chitin by aq. NaOH treatment was studied for a highly crystalline beta-chitin sample from diatom spine. The minimum NaOH concentration to cause swelling was between 25% and 30% w/w. The alkali-swollen material was poorly crystalline and was regenerated as alpha-chitin on washing with water. This conversion caused total collapse of the original microfibrillar morphology. These features are similar to those of 7 N-8 N HCl treatment reported earlier, but alkali treatment was free from depolymerization or deacetylation.

journal_name

Biomacromolecules

journal_title

Biomacromolecules

authors

Noishiki Y,Takami H,Nishiyama Y,Wada M,Okada S,Kuga S

doi

10.1021/bm0257513

keywords:

subject

Has Abstract

pub_date

2003-07-01 00:00:00

pages

896-9

issue

4

eissn

1525-7797

issn

1526-4602

journal_volume

4

pub_type

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