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KMID : 1041220060480010011
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Journal of Sericultural and Entomological Science
2006 Volume.48 No. 1 p.11 ~ p.15
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Characterization of Hydrolyzed Antheraea yamamai Silk Fibroin Powder
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Kwon Hae-Yong
Lee Kwang-Gil
Yeo Joo-Hong
Woo Soon-Ok
Han Sang-Mi
Sohn Bong-Hee
Lee Heui-Sam
Shin Bong-Seop
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Abstract
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Antheraea yamamai silk fibroin powder was prepared by treatment with HCl. The prepared A. yamamai fibroin hydrolysate was characterized by gel filtration chromatography, amino acid analysis, X-ray diffractometry, circular dichroism analysis, differential thermal analysis, and thermogravimetry. The average molecular weight of A. yamamai powder was about 430 and the major amino acids composed of the powder were Ala and Ser. According to XRD analysis, A. yamamai silk powder showed sharp diffraction peaks at $2{\theta}=20.34^{\circ}\;and\;31.5^{\circ}$. CD spectrum showed a peak around 220 nm and a should 215 nm, assigned to ${\alpha}-helix\;and\;{\beta}-sheet$ structure, respectively. DSC and TGA showed that the maximum degradation temperature of powder was around $250{\sim}270^{\circ}C$. Moreover, no harmful heavy metal was contained in the A. yamamai silk fibroin hydrolysate.
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KEYWORD
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Antheraea yamamai, Silk fibroin hydrolysate, X-ray diffraction, Thermal Degradation, Heavy metal content
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