บทคัดย่องานวิจัย

หมวดหมู่ : ฐานข้อมูลงานวิจัย

Low temperature metabolism of apple phenolics and quiescence of Phlyctaena vagabunda.

Lattanzio, V., Venere, D. di, Linsalata, V., Bertolini, P., Ippolito, A., and Salerno, M.

Journal of Agricultural and Food Chemistry, Volume 49, Number 12, 2001. Pages 5817-5821.

2001

บทคัดย่อ

Low temperature metabolism of apple phenolics and quiescence of Phlyctaena vagabunda.

The content of chlorogenic acid, (+)-catechin, (-)-epicatechin, phloretin glycosides, and quercetin glycosides in fresh and stored Golden Delicious apples (Malus domestica [M. pumila]) was determined. The relative amount of phenolics in the peel, with the exception of chlorogenic acid and (-)-epicatechin, was higher than that in the flesh. In addition, quercetin glycosides were detected only in the skin. These compounds were tested for fungicidal activity against Phlyctaena vagabunda [Pezicula alba], the causal agent of a postharvest rot. Chlorogenic acid only inhibited Phlyctaena vagabunda spore germination and mycelial growth in vitro. Changes of apple phenolics and polyphenol oxidase [catechol oxidase] activity during cold storage and the biological activity of these phenolics are also analysed with reference to the development of quiescent infections during cold storage plus shelf life at room temperature. The results obtained suggested that phloridzin and chlorogenic acid in combination with polyphenol oxidase activity could function to arrest Phlyctaena vagabunda in quiescent infections associated with immature and ripening apple fruit.