บทคัดย่องานวิจัย

หมวดหมู่ : ฐานข้อมูลงานวิจัย

Relationship between kiwifruit size and the rate of softening under controlled atmosphere conditions.

Crisosto, C. H.; Garner, D.; Saenz, K.;

Postharvest Horticulture Series - Department of Pomology, University of California Year: 1997 Issue: No. 17 Pages: 165-169

1997

บทคัดย่อ

Relationship between kiwifruit size and the rate of softening under controlled atmosphere conditions.

During the 1996 season, large (approx equal to 101 g), medium (approx equal to 93 g) and small (approx equal to 81 g) Hayward kiwifruits were stored in either ethylene-free air or 5% CO2 + 2% O2 at 0 deg C during a 16-week cold storage period. Under both storage conditions, large fruits had a slower rate of softening than medium and small fruits. In general, air-stored fruits softened approximately 2.5 times faster than CA-stored fruits. Soluble solids concentration increase was independent of fruit size and storage conditions. Because kiwifruits are more susceptible to physical damage during the packaging operation and shipment when they soften below 17.8 N (penetration force with an 8-mm tip), the number of weeks to reach this firmness under each of the different size-storage conditions was determined. Under air conditions, large, medium and small fruits reached 17.8 N fruit firmness by 13, 12 and 11 weeks, respectively. Large, medium and small fruits under CA conditions (5% CO2 + 2% O2) were

estimated to reach 17.8 N fruit firmness by 57, 35 and 25 weeks, respectively. Thus, the duration of cold storage of kiwifruits in bins prior to packaging will depend on fruit size and storage conditions.