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KMID : 0525720120170020080
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Journal of Chitin and Chitosan
2012 Volume.17 No. 2 p.80 ~ p.85
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Physicochemical and Functional Properties of Chitosans Prepared from Ground and Entire Squid Pens
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Byun Sung-Mi
No Hong-Kyoon
Prinyawiwatkul Witoon
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Abstract
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Selected physicochemical, binding, antioxidant, and antibacterial properties of chitosans prepared from ground (designated as G-chitosan) and entire (designated as E-chitosan) squid (Todarodes pacifica) pens were evaluated. G-chitosan had significantly lower nitrogen content, degree of deacetylation (%), color lightness (L*) and redness (a*) values, but higher bulk density, viscosity and color yellowness (b*) values than E-chitosan. Compared with E-chitosan, G-chitosan exhibited higher waterbinding capacity, dye-binding capacity and antibacterial activity against two gram-negative (Salmonella Enteritidis and Escherichia coli) and two gram-positive (Listeria monocytogenes and Staphylococcus aureus) bacteria. However, it exhibited lower fat-binding capacity and DPPH radical scavenging activity. This study demonstrated that chitosans prepared from ground and entire squid pens exhibited differences in their physicochemical and functional characteristics.
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KEYWORD
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Antibacterial activity, Binding capacity, Chitosan, Squid pens, DPPH radical scavenging activity
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