บทคัดย่องานวิจัย

หมวดหมู่ : ฐานข้อมูลงานวิจัย

Effect of postharvest storage temperature on the conversion of 14C-mevalonic acid to carotenes in tomato fruit.

Hamauzu, Y.; Chachin, K.; Ueda, Y.;

Journal of the Japanese Society for Horticultural Science Year: 1998 Vol: 67 Issue: 4 Pages: 549-555 Ref: 30 ref.

1998

บทคัดย่อ

Effect of postharvest storage temperature on the conversion of 14C-mevalonic acid to carotenes in tomato fruit.

Carotenoid metabolism was investigated in pericarp sections of tomato fruits stored at 20, 30 or 35 deg C. The sections were incubated with 2-14C-mevalonic acid for 10 h at the same temperatures. Under long-duration storage at high temperatures, the radioactivity of lycopene extracted from pericarp sections was low, whereas that of beta -carotene was high. The specific radioactivity of carotenes decreased in order of the steps of the carotenoid biosynthesis pathway (phytoene right arrow lycopene right arrow beta -carotene) in all the sections of the fruit stored at each of the temperatures. It is suggested that high temperature inhibits the accumulation of lycopene in tomato fruits because the conversion of lycopene to beta -carotene is stimulated instead.