The Korean Journal of Food And Nutrition (한국식품영양학회지)

The Korean Society of Food and Nutrition (한국식품영양학회)
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Antioxidant Activity of Corn (Zea mays L.) By-Products and Changes in Phytosterol Content according to the Growth Period of Leaves and Stems

옥수수 부산물의 항산화 활성 및 잎과 줄기의 생육시기별 Phytosterol 함량 변화

  • Mi Ja Lee (Division of Crop Foundation, National Institute of Crop Science, Rural Development Administration) ;
  • Hyun Young Kim (Division of Crop Foundation, National Institute of Crop Science, Rural Development Administration) ;
  • Seung-Yeob Song (Division of Crop Foundation, National Institute of Crop Science, Rural Development Administration) ;
  • Woo Duck Seo (Division of Crop Foundation, National Institute of Crop Science, Rural Development Administration)
  • 이미자 (농촌진흥청 국립식량과학원 작물기초기반과) ;
  • 김현영 (농촌진흥청 국립식량과학원 작물기초기반과) ;
  • 송승엽 (농촌진흥청 국립식량과학원 작물기초기반과) ;
  • 서우덕 (농촌진흥청 국립식량과학원 작물기초기반과)
  • Received : 2023.03.15
  • Accepted : 2023.10.04
  • Published : 2023.10.31
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Abstract

As the consumption of corn increases, the production of by-products is also increasing. In this study, functional substances and antioxidant activities of corn by-products were investigated to determine their applicability as functional materials. Total polyphenol, flavonoid contents, and ABTS antioxidant activity were the highest in leaves. The total phenolic acid content was the highest in cobs; p-coumaric and ferulic acid were the main components. Phytosterol content in leaves and stems was high at 64 and 50 days after sowing, 261.4 and 274.7 mg/100 g, respectively. β-sitosterol of the leaves and stems was the highest, 149.2 and 138.7 mg/100 g. The total phytosterol content of grains and by-products harvested 106 days after sowing was in the order of: corn silk, husk, grain, leaf, stem, and cob. Among the phytosterols, β-sitosterol was the highest, followed by stigmasterol and campesterol, and the composition was different depending on part. The total phytosterol content was the highest in husk and corn silk, but the stems and leaves, which account for 50% of the total corn biomass, also contained high phytosterol content. Therefore, corn leaves and stems are expected to be used as functional raw materials for the development of functional materials in the future.

Keywords

Acknowledgement

본 논문은 농촌진흥청 연구사업(ATIS 과제번호: PJ016088022023)의 지원에 의해서 이루어진 것임.

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