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KMID : 0525720120170020075
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Journal of Chitin and Chitosan
2012 Volume.17 No. 2 p.75 ~ p.79
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Comparison of Selected Physicochemical and Functional Properties of Squid Pen β-Chitosans Prepared without and with Demineralization Process
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Byun Sung-Mi
Youn Dal-Kyoung
No Hong-Kyoon
Hong Joo-Heon
Prinyawiwatkul Witoon
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Abstract
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Selected physicochemical and functional properties of two squid pen β-chitosans, chitosan-WDM and chitosan-DM, respectively, prepared without and with a demineralization step (DM) were compared. Chitosan-WDM had comparable degree of deacetylation, but higher ash content and viscosity compared with chitosan-DM. Chitosan-WDM also possessed greater water-binding (WBC) and fat-binding (FBC) capacities, but lower DPPH radical scavenging activity compared with chitosan- DM. Both chitosans exhibited similar dye binding capacity. Thus, production of squid pen β-chitosan-WDM is advantageous if higher viscosity, WBC and FBC are desirable. However, to produce squid pen β-chitosan with low ash content and improved antioxidant property, DM should be considered.
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KEYWORD
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β-chitosan, Binding properties, Demineralization, DPPH radical scavenging activity, Squid pen
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