Extraction, structures and properties of α- and β-chitin.

被引：69

作者：

Campana, Sergio P., Jr. ^{[1
]}

de Britto, Douglas ^{[1
]}

Curti, Elisabete ^{[1
]}

Abreu, Fernanda R. ^{[1
]}

Cardoso, Marcia B. ^{[1
]}

Battisti, Marcos V. ^{[1
]}

Sim, Priscilla C. ^{[1
]}

Goy, Rejane C. ^{[1
]}

Signini, Roberta ^{[1
]}

Lavall, Rodrigo L. ^{[1
]}

机构：

[1] Univ Sao Paulo, Inst Quim Sao Carlos, Dept Quim Fis, CP 780, BR-13560970 Sao Carlos, SP, Brazil

来源：

QUIMICA NOVA | 2007年 / 30卷 / 03期

关键词：

polymorphs; chitin; chitosan;

D O I：

10.1590/S0100-40422007000300026

中图分类号：

O6 [化学];

学科分类号：

0703 [化学];

摘要：

The fact that alpha- and beta-chitin adopt different arrays in the solid state is explored to emphasize their different properties and distinct spectral characteristics and X ray diffraction patterns. The methods for their extraction from the biomass in view of the preservation of their native structures and aiming to fulfill the claims of purity and uniformity for potential applications are discussed. The different arrays adopted by alpha- and beta-chitin also result in distinct reactivities toward the deacetylation reaction. Thus, the deacetylation of beta-chitin is more efficient owing to the better accessibility to amide groups due to the lower crystallinity of this polymorph.

引用

页码：644 / 650

页数：7

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[3]

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[4]

BATTISTI MV, 2002, THESIS U SAO PAULO