บทคัดย่องานวิจัย

หมวดหมู่ : ฐานข้อมูลงานวิจัย

Physiological and quality responses of 'Conference' pears to reduced levels of O2 under controlled atmosphere storage conditions.

Recasens, I.; Ganau, D.; Graell, J.; Larrigaudiere, C.; Lopez, L.;

Postharvest Horticulture Series - Department of Pomology, University of California Year: 1997 Issue: No. 16 Pages: 258-263 Ref: 10 ref.

1997

บทคัดย่อ

Physiological and quality responses of 'Conference' pears to reduced levels of O2 under controlled atmosphere storage conditions.

Conference pear fruits were harvested in Lerida, Spain, on 20 August (H1) and 5 September (H2) 1996 and stored at 0 deg C for 3 or 6 months in air (21% O2 + 0.03% CO2) or one of 2 controlled atmospheres (CA, 3% O2 + 1.6% CO2 or LO, 1.8% O2 + 0.7% CO2). Fruit quality and physiological activity were assessed after one and 5 days of shelf life at 20 deg . Fruits stored for 6 months in CA or LO were firmer than air-stored fruits. After 5 days of shelf life, the effects of low O2 on soluble solids content and titratable acidity were inconsistent. Ethanol content of air-stored fruits was higher than that of fruits kept under CA or LO conditions. H2 fruits had higher alcohol dehydrogenase activity than H1 fruits, but similar pyruvate decarboxylase activity. It is suggested that senescence might be the principal factor initiating or favouring anaerobic metabolism. The climacteric of fruits kept for 3 months in air reached a peak earlier than that of CA or LO fruits. After 6 months' cold storage, H2 frui

ts showed postclimacteric patterns. Both CA and LO reduced scald incidence in H1 fruits, but increased brownheart disorder in H2 fruits.