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

Química Nova

Battisti, Marcos Valério¹  Campana-Filho, Sergio P.¹  Universidade de São Paulo, São Carlos, Brasil¹ 

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 Macrobrachium rosenbergii were submitted to deproteinization (Dp) and demineralization (Dm) aiming the extraction of α-chitin. The different parts of the shells were processed independently by carrying out sequence 1 (Dp/Dm) and sequence 2 (Dm/Dp). Both sequences allowed the extraction of chitins with low contents of calcium and magnesium, regardless of the part being processed. The sequence 1 lead to higher extraction yields while sequence 2 resulted in lower 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】

Unknown