Varietal differences in phenolic content and astringency in skin and flesh of hardy kiwifruit resources in Japan
Jin Gook Kim, Kenji Beppu and Ikuo Kataoka
Scientia Horticulturae, Volume 120, Issue 4, 19 May 2009, Pages 551-554
2009
บทคัดย่อ
Varietal differences in the total phenolic content and astringency in the skin and flesh were determined among the cultivars and local collections of hardy kiwifruit with a ploidy variance found in Japan. The average values of the total phenolic content in the skin and flesh were 2.66 and 0.18 g 100 g−1FW, respectively. There were large varietal differences in the total phenolic content in the skin in the range of 1.3–5.0 g 100 g−1FW. Kochi (tetraploid), while Gassan and ‘Mitsuko’ (hexaploid) contained a larger amount of total phenolics. High astringency was found in Gassan, ‘Mitsuko’ and ‘Hoko’ (hexaploids) and Kochi. HPLC analysis showed that the major components of phenolics in the flesh were (+)-catechin, chlorogenic acid, rutin, (-)-epicatechin and quercetin.