บทคัดย่องานวิจัย

หมวดหมู่ : ฐานข้อมูลงานวิจัย

Effect of initial low oxygen stress treatment and CA storage at increased carbon dioxide levels on post-storage quality of South African-grown 'Granny Smith' and 'Topred' apples.

Merwe, J. A. van der; Combrink, J. C.; Truter, A. B.; Calitz, F. J.;

Postharvest Horticulture Series - Department of Pomology, University of California Year: 1997 Issue: No. 16 Pages: 79-84 Ref: 14 ref.

1997

บทคัดย่อ

Effect of initial low oxygen stress treatment and CA storage at increased carbon dioxide levels on post-storage quality of South African-grown 'Granny Smith' and 'Topred' apples.

The effect of an initial low oxygen stress (ILOS) treatment followed by storage at different controlled atmosphere (CA) regimes on post-storage quality of Topred and Granny Smith apples was evaluated during 3 successive seasons (1994-1996). Fruits harvested at a pre-optimum maturity stage were stored for 7 days under simulated commercial handling procedures. Subsequently, fruits not treated with diphenylamine (DPA) were exposed for 10 days to an O2 concentration of 0.5% and thereafter stored at 1.0 deg C for 8 months at 1.0% O2/1.0% CO2, 1.0% O2/3.0% CO2 or 1.0% O2/5.0% CO2. The trial was repeated with fruits not exposed to a low O2 concentration, but treated with DPA at 2000 micro l/litre (cv. Topred) and 2500 micro l/litre (cv. Granny Smith). Fruit firmness, total soluble solids, total titratable acids and skin colour were not affected by any of the CO2 concentrations. ILOS treatment, without DPA, significantly inhibited the development of superficial scald on both cultivars. The best results

were obtained with an ILOS treatment followed by CA storage at 1.0% O2/3.0% CO2 at 1.0 deg without DPA treatment. In this study, ILOS treatment was successfully combined with increased CO2 levels as an alternative for DPA to inhibit the development of superficial scald.