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Optimum CA condition for four apple cultivars grown in Korea.

Hong, Y. P.; Choi, J. H.; Lee, S. K.;

Postharvest Horticulture Series - Department of Pomology, University of California Year: 1997 Issue: No. 16 Pages: 241-245 Ref: 10 ref.

1997

บทคัดย่อ

Optimum CA condition for four apple cultivars grown in Korea.

Fruits of 4 apple cultivars harvested in the southern part of Korea Republic in August, September and October were stored in air or controlled atmosphere (CA) storage (1 or 3% O2 + 3% CO2) at 0 deg C for 3 months (cultivars Hongro and Tsugaru) or 6 months (Hwahong and Fuji). Fruit firmness retention was better in CA storage than in air storage, and was better in Hongro, Hwahong and Fuji fruits after storage in 1% O2 + 3% CO2 than 3% O2 + 3% CO2, but there was no significant difference in firmness after storage in Tsugaru fruits stored in 1% O2 + 3% CO2 or 3% O2 + 3% CO2. Organic acid content fell slightly during storage in all fruits except Hwahong. Hunter colour a values of fruit peel increased during storage in 3% O2 + 3% CO2 and air storage. There was no incidence of internal browning after 3 months' storage in 1% O2 + 3% CO2, and after 6 months' storage the incidence was low (2.1-2.5%). Internal browning incidence was higher (up to 14.3%) in fruits stored in air or 3% O2 + 3% CO2. Cork spot

incidence was lower in fruits stored in CA than in air, but there was no difference between the 2 CA treatments. Decay (manly caused by Botrytis cinerea and Penicillium expansum) was effectively controlled by CA storage. The results indicate that fruit quality can be maintained in fruits of the 4 cultivars by storing in 1% O2 + 3% CO2.