ศูนย์นวัตกรรมเทคโนโลยีหลังการเก็บเกี่ยว

Postharvest calcium infiltration delays membrane lipid catabolism in apple fruit.

Picchioni, G.A., Watada, A. E., Conway, W. S., Whitaker, B. D. and Sams, C. E.

Journal of agricultural and food chemistry. Vol: 46 Issue: 7 Pages: 2452-2457.

1998

บทคัดย่อ

Postharvest changes in membrane lipids of Ca2(+)-infiltrated apples (Malus domestica Borkh. cv. Golden Delicious) have been evaluated. Calcium infiltration (2% or 4% w/v CaCl2) improved fruit firmness retention over control (water-infiltrated) fruit following 6 months of 0 degrees celsius storage and after 7 subsequent days at 20 degrees celsius. During cold storage, total phospholipid (primarily phosphatidylcholine and phosphatidylethanolamine) and acylated steryl glycoside concentrations increased in Ca2+ -infiltrated fruit but decreased in control fruit. Seven days following transfer from cold storage to 20 degrees celsius, total phospholipid concentration remained highest in fruit infiltrated with 4% CaCl2. Free sitosterol and steryl glycoside concentrations were generally increased with increasing infiltrated Ca2+ concentration throughout the postharvest evaluation period. Greater conservation of specific membrane lipid components in the Ca2+ -infiltrated fruit, both during and after low-temperature storage, may contribute to the well-known beneficial effects of Ca2+ infiltration in maintaining apple quality.