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KMID : 1041219980400020158
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Journal of Sericultural and Entomological Science
1998 Volume.40 No. 2 p.158 ~ p.162
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Structural Characteristics of Insect Chitin/Chistosan
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이광길/Lee, Kwang Gill
이용우/권해용/여주홍/박인규/남진/설광열/Lee, Yong Woo/Kweon, Hae Yong/Yeo, Joo Hong/Park, In Kyu/Nam, Jin/Seol, Kwang Youl
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Abstract
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The chitin was isolated from various kinds of insects such as exuvia of Psacothea hilaris Pascoe, silkworm pupa, Agrius convolvuli or from cuticle of cockroach by treatment with dilute HCl and NaOH. The chemical and crystalline structure was characterized by FT-lR and X-ray diffractometer. All of the chitins extracted from insects showed characteristic α-chitin peaks at the Brags angle 2θ=9.3°, 19.4°, and 23.5° by X-ray diffraction analysis. The transition from chitin to chitosan was confirmed by IR spectra and the degree of deacetylation of the crab shell, silkworm pupa, cockroach, and Psacothea hilaris Pascoe was 70.9, 76.4, 75.5, and 74.1% , respectively. The double diffraction peaks of insect chitosan were observed at 2θ =10° and 20, indicating the characteristic of hydrated crystalline structure of chitosan.
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KEYWORD
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