ศูนย์นวัตกรรมเทคโนโลยีหลังการเก็บเกี่ยว

Ripening initiation and storage performance of avocados treated with an edible-film coating.

Bender, R. J.; Brecht, J. K.; Sargent, S. A.; Navarro, J. C.; Campbell, C. A.;

Acta Horticulturae Year: 1993 Issue: No. 343 Pages: 184-186 Ref: 5 ref.

1993

บทคัดย่อ

NatureSeal, a polysaccharide-based edible film with cellulose as the main component (1 and 2% formulations) was applied to avocado fruits (cultivars Booth #7 and Brooks Late). Booth #7 fruits were treated with 100 p.p.m. ethylene for 2, 3 or 4 days, either before or after coating with the edible film. A 1% formulation of the coating was applied to Brooks Late fruits which were then sent by refrigerated transport and stored at 5 deg C for 4 weeks. Fruits were then transferred to 20 deg and evaluated daily for respiration rate and ethylene production. Flesh firmness was also measured. Coating preclimacteric Booth #7 fruits delayed ripening at 20 deg by about 2 days even when coated fruits were treated with ethylene for up to 3 days. Ethylene treatment for 4 days overcame the ripening delay. Coated late-harvested fruits (Brooks Late) showed a consistent tendency for better storage performance. Coated fruits exhibited a lower respiration rate, lower ethylene production and higher flesh firmness than non-coated fruits. Internal O2 and CO2 levels were 15.2 and 3.7%, respectively, in non-coated fruits and 10.2 and 10.1%, respectively, in coated fruits. These results suggest that a modified atmosphere effect on ripening may explain the action of the coating on avocado fruit ripening.