International Journal of Industrial Entomology and Biomaterials

Korean Society of Sericultural Science (한국잠사학회)
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A comparative analysis of characteristics and antioxidant capacity of Korean mulberries for efficient seedling cultivation

  • Chan Young Jeong (Department of Agricultural Biology, National Institute of Agricultural Sciences, Rural Development Administration) ;
  • Heon Woong Kim (Department of Agro-food Resources, National Institute of Agricultural Sciences, Rural Development Administration) ;
  • Seong Ryul Kim (Department of Agricultural Biology, National Institute of Agricultural Sciences, Rural Development Administration) ;
  • Hyun-Bok Kim (Department of Agricultural Biology, National Institute of Agricultural Sciences, Rural Development Administration) ;
  • Kee-Young Kim (Department of Agricultural Biology, National Institute of Agricultural Sciences, Rural Development Administration) ;
  • Seong-Wan Kim (Department of Agricultural Biology, National Institute of Agricultural Sciences, Rural Development Administration) ;
  • Jong Woo Park (Department of Agricultural Biology, National Institute of Agricultural Sciences, Rural Development Administration) ;
  • Ik Seob Cha (Department of Agricultural Biology, National Institute of Agricultural Sciences, Rural Development Administration) ;
  • Sang Kug Kang (Department of Agricultural Biology, National Institute of Agricultural Sciences, Rural Development Administration) ;
  • Ji Hae Lee (Department of Agricultural Biology, National Institute of Agricultural Sciences, Rural Development Administration)
  • Received : 2023.11.07
  • Accepted : 2023.12.19
  • Published : 2023.12.31
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Abstract

Mulberry exhibits unique characteristics and functionalities across various components, including the roots, branches, leaves, and fruits. However, despite numerous studies on mulberry, research on this plant at the seedling stage is insufficient. Therefore, this study aimed to compare the suitability for seedling cultivation and antioxidant effects of four Korean mulberry cultivars, namely, Daesim, Suhong, Simgang, and Cheongsu. In terms of seed weight, germination rate, and growth rate, Daesim was the most suitable cultivar for seedling production. Polyphenol and flavonoid content analysis showed that all cultivars, except for Cheongsu, showed the highest phenolic content at the 2-week seedling stage. Similarly, antioxidant assays using 2,2'-azino-di-3-ethylbenzthiazoline sulfonic acid (ABTS) and 2, 2-diphenyl-1-picrylhydrazyl (DPPH) radicals revealed that the antioxidant effect of all cultivars, except for Cheongsu, increased with cultivation at 2- 4- and 6-week. However, mulberry seedlings had a slower reaction rate against DPPH radical removal than mulberry leaves. In addition, ABTS radical scavenging activity showed a different correlation with polyphenol content. This phenomenon may be due to the different polyphenol compositions between mulberry leaves and seedlings. The results of this study suggest that mulberry seedlings exhibit different bioactivities from mulberry leaves, and component analysis is required in further research.

Keywords

Acknowledgement

This research was supported by the 'Research Program for Agriculture Science and Technology Development' (Grant No. PJ01675701) and the National Institute of Agricultural Sciences, Rural Development Administration, Republic of Korea.

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