บทคัดย่องานวิจัย

หมวดหมู่ : ฐานข้อมูลงานวิจัย

Physiological, biochemical and anatomical changes in lychee (Litchi chinensis Sonn.) pericarp during storage.

Underhill, S. J. R.; Critchley, C.;

Journal of Horticultural Science Year: 1993 Vol: 68 Issue: 3 Pages: 327-335 Ref: 25 ref.

1993

บทคัดย่อ

Physiological, biochemical and anatomical changes in lychee (Litchi chinensis Sonn.) pericarp during storage.

Polyphenol oxidase (PPO) activity, anthocyanin concentration, endogenous ethylene production and anatomical features of mature lychee cv. Bengal pericarp tissue were studied in relation to postharvest tissue browning. PPO activity decreased significantly once fruits were harvested. Although anthocyanin degradation occurred, it was far slower than tissue browning. It is considered unlikely that pericarp browning is due to direct pigment degradation by PPO. Pericarp browning may in fact be caused by non-PPO mediated anthocyanin decolorization, coupled with localized PPO activity affecting secondary metabolites other than anthocyanin. Pericarp browning was correlated with moisture loss. The development of pericarp micro-cracking after harvest was observed, and may be involved in facilitating rapid pericarp moisture loss.