1998 Fiscal Year Final Research Report Summary
Development of New Processing for the Silk Fibers Produced by the Silkworms Reared on an Artificial Diet
| Project/Area Number |
09556012
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| Research Category |
Grant-in-Aid for Scientific Research (B)
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| Allocation Type | Single-year Grants |
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| Section | 展開研究 |
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| Research Field |
蚕糸・昆虫利用学
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| Research Institution | Heian Jogakuin College |
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Principal Investigator |
ITO Hiraku Heian Jogakuin College, Professor, 生活学科, 教授 (20213077)
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| Co-Investigator(Kenkyū-buntansha) |
IMAMURA Toshikatsu Institute of Aseptic Sericulture, Manager, 無菌養蚕システム研究所, 所長
MORI Hajime Kyoto Institute of Technology, Associate Professor, 繊維学部, 助教授 (80201812)
SAKAI Hiroshi Heian Jagakuin College, Lecturer, 生活学科, 講師 (90310648)
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| Project Period (FY) |
1997 – 1998
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| Keywords | Silk Fibers / Artificial Diet / Fibroin / Sericin / New Processing / Meehanical Properties / Dyeing Behavior |
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| Research Abstract |
We attempted to develop a new processing method for the silk fibers produced by the silkworms reared on an artificial diet. For this purpose, we investigated structure and properties of silk proteins produced on an artificial diet, and compared with those on a mulberry leaf diet. To this end, silkworms (Kinshuu*Shougetsu) were reared on an artificial diet (A) or on a mulberry diet (M) for all rearing duration. The artificial diet consisted of a Tofu-cake as its main component. Two types of cocoons (A and M) were used as sample materials. The sericin content of the A cocoon (28.2%) was higher than that of N (25.0%) and the dissolution rate of the A sericin into hot water was also higher. Amino acid composition (AAC) of the A sericin was different from that of M sericin. The AACs of the A and M fibroins were almost identical. The X-ray diffraction pattern of the A fibroin was also nearly the same as that of M fibroin. Acid dye uptake of the A sericin was higher than that of N sericin, but almost the same for the A and M fibroin samples. Mechanical properties of the A and M fibroin samples were also evaluated. The artificial diet used in this study affects the structure and properties of sericin proteins, but does a little those of fibroin proteins.
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