Preparation and characterization of α-chitin and chitosan from the shells of Macrobrachium rosembergii

Quimica nova

Battisti, Marcos Valério¹  Campana-Filho, Sergio P.¹ 

[1] Universidade de São Paulo, São Carlos, Brasil

关键词: biomass;    chitin;    chitosan.;   

DOI  :  10.1590/S0100-40422008000800019

学科分类：化学（综合）

来源: Sociedade Brasileira de Quimica

【 摘 要 】

The shells of Macrobrachiumrosenbergii were submitted to deproteinization (Dp) and demineralization(Dm) aiming the extraction of α-chitin. The differentparts of the shells were processed independently by carrying out sequence 1(Dp/Dm) and sequence 2 (Dm/Dp). Both sequences allowed the extraction of chitinswith low contents of calcium and magnesium, regardless of the part being processed.The sequence 1 lead to higher extraction yields while sequence 2 resulted inlower contents of inorganic compounds. Extensively deacetylated chitosans (GA<10%)of medium molecular weight (0,9 x 105 < Mv <2 x 105 g/mol) resulted from the deacetylation of chitin.

【 授权许可】

CC BY