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논문 기본 정보

자료유형
학술저널
저자정보
Nak-Yun Sung (한국원자력연구원) Eui-Baek Byun (한국원자력연구원) Sun-Kyu Kwon (한국원자력연구원) Jae-Hun Kim (한국원자력연구원) Beom-Seok Song (한국원자력연구원) Jong-il Choi (한국원자력연구원) Jin-Kyu Kim (한국원자력연구원) Yohan Yoon (한국원자력연구원) Myung-Woo Byun (한국원자력연구원) Mee-Ree Kim (충남대학교) Hong-Sun Yook (충남대학교) Ju-Woon Lee (한국원자력연구원)
저널정보
한국식품과학회 Food Science and Biotechnology Food Science and Biotechnology vol 18. no 1
발행연도
2009.2
수록면
228 - 233 (6page)

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This study was conducted to examine the changes in the molecular structure and physiological activities of silk fibroin by gamma irradiation. The results of gel permeation chromatography and sodium dodecyl sulfate-polyacrylamide gel electrophoresis showed that the molecular weight of fibroin was increased depending upon the irradiation dose. Secondary structure of fibroin determined by using circular dichroism revealed that the ratio of α-helix was increased up to 10 kGy and then decreased depending upon the irradiation dose. Whereas, the ratio of β-sheet, β-turn, and random coil were decreased and then increased with an alteration in the α-helix secondary conformation. The 2.2-diphenyl-1-picryl-hydrazil (DPPH) radical scavenging activity of fibroin was increased by gamma irradiation at 5 kGy, but was decreased above 10 kGy depending upon the irradiation dose. Also, the inhibition activities of tyrosinase and melanin synthesis of fibroin were increased by gamma irradiation. These results indicated that gamma irradiation could be used as an efficient method to make fibroin more suitable for the development of functional foods and cosmetics.

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Abstract
Introduction
Materials and Methods
Results and Discussion
Acknowledgments
References

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