บทคัดย่องานวิจัย

หมวดหมู่ : ฐานข้อมูลงานวิจัย

Preformed antifungal compounds of citrus fruit: effect of postharvest treatments with heat and growth regulators.

Ben-Yehoshua, S.; Rodov, V.; Fang, D. Q.; Kim, J. J.;

Journal of Agricultural and Food Chemistry Year: 1995 Vol: 43 Issue: 4 Pages: 1062-1066 Ref: 25 ref.

1995

บทคัดย่อ

Preformed antifungal compounds of citrus fruit: effect of postharvest treatments with heat and growth regulators.

Heat treatment (36 deg C, 3 d) of lemon fruit inhibited both the decline of antifungal activity in the flavedo tissue and the loss of the preformed antifungal material citral and drastically reduced the decay percentage. Dips in gibberellic acid (50 and 100 p.p.m.) or in 2,4-dichlorophenoxyacetic acid (200 p.p.m.) inhibited the decay development of stored fruit caused by Penicillium digitatum and slowed the decline of citral content and of the antifungal activity in the flavedo. On the contrary, ethylene treatment (25 or 50 p.p.m. for 3 d at 25 deg ) reduced the citral content and antifungal activity in the flavedo of both lemon and grapefruit. It is suggested that the effect of postharvest heat treatment and plant growth regulators on citrus decay might be related to the modulation of endogenous disease resistance of fruit via influence on the changes of preformed antifungal materials such as citral.