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Changes in Effective Component Contents of Apple Cultivars by Ripening

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한국식품영양학회지 (The Korean Journal of Food And Nutrition)
한국식품영양학회 (The Korean Society of Food and Nutrition)
초록

This study was conducted to select cultivars and determine the harvest period suited for the availability of biological activities in unripen apple. To analyze effective the components in the apple (Malus domestica), three cultivars, 'Summerking', 'Hongro', 'Fuji' were harvested from 40~50 days after full bloom to harvest time. Soluble solid content increased gradually by ripening but titratable acidity decreased with ripening regardless of the cultivars. The total phenol content significantly reduced with ripening from May 30 to July 30 (p<0.05). Substantially, the total phenol content of ‘Hongro’ in May 30 was four times higher than that of ‘Summerking’ in the same period and ten times higher than that of ‘Hongro’ in August 30. The total flavonoid content reduced with ripening regardless of cultivars (p<0.05) and that of ‘Hongro’ in May 30 was significantly highest (p<0.05). The ascorbic acid content was the highest in ‘Hongro’ in May 30 (p<0.05). The contents of tannin and ursolic acid significantly reduced with ripening from May 30 to July 30 (p<0.05), while no significant difference was observed between Hogro and Fuji after July 30. Therefore, 'Hongro' harvested in May 30 was considered to be best in the utilization of the effective components of immature apple.

목차
Abstract
서 론
재료 및 방법
    1. 실험재료
    2. 당도 및 적정산도
    3. 총 phenol 함량
    4. 총 flavonoid 함량
    5. Tannin 함량
    6. Ascorbic acid 함량
    7. Ursolic acid 함량
    8. 통계처리
결과 및 고찰
    1. 당도 및 적정산도
    2. 총 phenol 및 총 flavonoid 함량
    3. Tannin 함량
    4. Ascorbic acid 함량
    5. Ursolic acid 함량
요약 및 결론
References
저자
  • 홍정진(경상남도농업기술원 사과이용연구소) | Jeong Jin Hong (Apple Utilization Research Institute, Gyeongsangnam-do Agricultural Research & Extension Services) Corresponding author
  • 설희경(경상남도농업기술원 사과이용연구소) | Hui Gyeong Seol (Apple Utilization Research Institute, Gyeongsangnam-do Agricultural Research & Extension Services)
  • 김윤숙(경상남도농업기술원 사과이용연구소) | Yoon Suk Kim (Apple Utilization Research Institute, Gyeongsangnam-do Agricultural Research & Extension Services)
  • 정은호(경상남도농업기술원 사과이용연구소) | Eun Ho Jeong (Apple Utilization Research Institute, Gyeongsangnam-do Agricultural Research & Extension Services)
  • 김영봉(경상남도농업기술원 사과이용연구소) | Yeong Bong Kim (Apple Utilization Research Institute, Gyeongsangnam-do Agricultural Research & Extension Services)
  • 홍광표(경상남도농업기술원 연구개발국) | Kwang Pyo Hong (Dept. of Research & Development, Gyengnam Agriculture Research and Extension Services)