บทคัดย่องานวิจัย

หมวดหมู่ : ฐานข้อมูลงานวิจัย

Effect of carbon dioxide on anthocyanins, phenylalanine ammonia lyase and glucosyltransferase in the arils of stored pomegranates.

Holcroft, D. M.; Gil, M. I.; Kader, A. A.;

Journal of the American Society for Horticultural Science Year: 1998 Vol: 123 Issue: 1 Pages: 136-140 Ref: 29 ref.

1998

บทคัดย่อ

Effect of carbon dioxide on anthocyanins, phenylalanine ammonia lyase and glucosyltransferase in the arils of stored pomegranates.

Pomegranates (Punica granatum cv. Wonderful) were placed in jars continuously ventilated with air or air enriched with 10 or 20 kPa CO2 at 10 deg C for 6 weeks. Samples were taken at 0, 1, 2, 4 and 6 weeks, and postharvest quality attributes were measured. The arils of the pomegranates stored in air were of a deeper red than the initial controls and than those stored in CO2-enriched atmospheres. This increased colour was associated with increased anthocyanin concentration. Arils from fruits stored in air enriched with 10 kPa CO2 had lower anthocyanin concentrations than air-stored fruits, and atmospheres enriched with 20 kPa CO2 had even lower concentrations, possibly from suppressed anthocyanin biosynthesis. Anthocyanin concentration correlated well with the activity of phenylalanine ammonia lyase but not with glucosyltransferase activity. It is concluded that moderate CO2 atmospheres (10 kPa) prolonged storage life and maintained the quality of pomegranates, including adequate colour intensity

 of the arils.