• Title/Summary/Keyword: Citruses

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Quantitative Distribution and Analysis of Methoxylated Flavonoids in Citruses and Korean Chung-pi (감귤류와 한국산 청피에 함유된 Methoxylated Flavonoids의 분석과 정량적 분포)

  • Baik, S.O.;Bock, J.Y.;Chun, H.J.;Jeong, S.I.;Han, W.S.;Kim, I.K.
    • Analytical Science and Technology
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    • v.14 no.4
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    • pp.331-339
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    • 2001

  • Methoxylated flavonoids (sinenstin, nobiletin, tangeretin) were isolated and identified by preparative HPLC, mass and NMR. Chung-pi(I) and Chung-pi(II) contained methoxylated flavonoids most richly. Methoxylated flavonoids in Chung-pi obtained from Korean Milgam increased with fruit maturity, while contents of the methoxylated flavonoids gradually decreased after mid of October.

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Analysis and Quantitative Distribution of Glycosided Flavonoids in Citruses and Korean Chung-pi (감귤류와 한국산 청피에 함유된 Glycosided Flavonoids의 분석과 정량적 분포)

  • Baik, S.O.;Bock, J.Y.;Chun, H.J.;Jeong, S.I.;Baek, S.H.;Oh, H.B.;Kim, I.K.
    • Analytical Science and Technology
    • /
    • v.14 no.4
    • /
    • pp.340-348
    • /
    • 2001

  • Glycosided flabonoids (naringenin, naringin, narirutin, hesperidin, and hesperetin) in Citrus and Korea Chung-pi were isolated and analyzed with HPLC, GC-mass, UV and high resolution NMR. Contents of glycosided flavonoids were compared according to kinds of Citrus and fruit ripening periods. Major compound of Korean Chung-pi was hesperidin and minors were narirutin and hesperetin. Major compounds of Gisil were naringin, narirutin, naringenin and were narirutin, hesperidin in Gigak. Major compounds of milgam and orange were narirutin, hesperidin, and the contents of glycoside flavonoids decreased according to the age of maturity.

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