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Changes in Effective Component Contents of Apple Cultivars by Ripening

사과 품종별 성숙에 따른 유용성분 함량 변화

Hong, Jeong Jin;Seol, Hui Gyeong;Kim, Yoon Suk;Jeong, Eun Ho;Kim, Yeong Bong;Hong, Kwang Pyo
홍정진;설희경;김윤숙;정은호;김영봉;홍광표

  • Received : 2019.06.05
  • Accepted : 2019.07.29
  • Published : 2019.08.31

Abstract

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.

Keywords

unripened apple;cultivars;ripening;effective component

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