Obtenção e caracterização de α-quitina e quitosanas de cascas de Macrobrachium rosembergii

Química Nova

Marcos Valério Battisti¹  Sergio P. Campana-filho¹ 

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

关键词: biomass;    chitin;    chitosan;   

DOI  :  10.1590/S0100-40422008000800019

来源: SciELO

【 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 10(5) < Mv < 2 x 10(5) g/mol) resulted from the deacetylation of chitin.

【 授权许可】

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