International Journal of Industrial Entomology and Biomaterials

Korean Society of Sericultural Science (한국잠사학회)
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Enhanced silkworm antioxidant activity by feeding functional substances

  • Park, Jong Woo (Department of Agricultural Biology, National Institute of Agricultural Science, RDA) ;
  • Lee, Chang Hoon (Department of Agricultural Biology, National Institute of Agricultural Science, RDA) ;
  • Jeong, Chan Young (Department of Agricultural Biology, National Institute of Agricultural Science, RDA) ;
  • Kang, Sang Kuk (Department of Agricultural Biology, National Institute of Agricultural Science, RDA) ;
  • Kim, Seong-Wan (Department of Agricultural Biology, National Institute of Agricultural Science, RDA) ;
  • Kim, Nam-Suk (Department of Agricultural Biology, National Institute of Agricultural Science, RDA) ;
  • Kim, Kee Young (Department of Agricultural Biology, National Institute of Agricultural Science, RDA)
  • Received : 2022.05.10
  • Accepted : 2022.06.02
  • Published : 2022.06.30
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Abstract

Silkworm food has been found to be effective for dementia, liver function, lowering blood sugar, and possesses antioxidant properties, which has been attracting attention as a health functional food. In this study, methods for enhancing the functionality of silkworms were explored and the production potential of high-functional silkworms was analyzed. For enhancing antioxidant activity, ascorbic acid, caffeic acid, laminarin, and glutathione were injected or fed to 5th instar silkworms, and the antioxidant activity of silkworm extract was comparatively analyzed. There was no significant change in polyphenol and flavonoid content, but it was confirmed that 2,2-diphenyl-1-picrylhydrazyl radical scavenging ability, superoxide dismutase-like activity, and reducing power were slightly increased after injection of ascorbic acid, caffeic acid, and glutathione. To confirm the increase in antioxidant efficacy through feeding, an inducer was mixed with sucrose and sprayed on mulberry leaves. As a result, the growth rate of silkworms improved and all indicators of antioxidant activity were improved in silkworms fed with ascorbic acid and glutathione. Considering these results, producing high-functional silkworms was deemed possible.

Keywords

Acknowledgement

This study was supported by 2022 the RDA fellowship program of National Institute of Agricultural Science and was supported by a grant (No. PJ01502203) from the Rural Development Administration, Republic of Korea.

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