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KMID : 0903520000430040309
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Journal of the Korean Society of Agricultural Chemistry and Biotechnology
2000 Volume.43 No. 4 p.309 ~ p.313
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Study on the Manufacturing of Chitosan Using Krill(Euphausia superba Dana) and Quality Characterstics
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김동수/Kim, Dong Soo
이성갑/박인성/도정룡/Rhee, Seong Kap/Park, In Sung/Do, Jeong Ryong
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Abstract
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For the use of Antartic krill(Euphausia superba Dana) as food resource, general composition, extracting condition of chitin and quality characteristics of chitosan were investigated. General composition of frozen krill(Euphausia superba Dana) was consisted of moisture 79.0%, protein 13.1%, lipid 4.0%, VBN 7.7㎎%, ash 2.7%, others 1.2% and that of dried krill powder was moisture 5.6%, protein 56.1%, lipid 18.8%, ash 11.4%, others 8.1%. The condition of chitin extraction from krill powder was treated with 1N NaOH at 40℃ for removing protein, 1N HCl for excepting mineral substances and methanol for decoloring. The yield of chitin by new procedure developed was 3.7%. The composition of extracted chitin contents was moisture 7.1%, ash 0.4%, protein 3.5%, lipid 3.1%. The results of degree of deacetylation in chitosan at 50% NaOH, 121℃, for 2 hrs was showed 82%. At the same alkali concentration and reaction concentration, a longer reaction time gave a decreased degree of deacetylation. The apparant viscosity was 0.09241 ㎩ in 1% chitosan from krill and 0.13826 ㎩ in standard chitosan.
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