Research Article
Production of High Viscosity Chitosan from Biologically Purified Chitin Isolated by Microbial Fermentation and Deproteinization
Table 4
Properties of chitin flakes obtained from chemical and two-step biological processes.
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Properties | Shrimp chitin flake products | Chemical process | Biological process |
| pH | 7 | 7 | Appearance | White | White and light yellow | Crude protein (%, w/w) | | | Ash (%, w/w) | | | Deproteination efficacy (%) | | | Decalcification efficacy (%) | | | Color properties | | | | | | | | | | | | WIa | 85.5 | 83.1 | Degree of acetylation (%) | | | Viscosityb (mPa·s) | | | Yield (%) | | |
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whiteness index, by calculation.
bviscosity determined at shear rate of 20 s−1 (25°C).
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