ศูนย์นวัตกรรมเทคโนโลยีหลังการเก็บเกี่ยว

Disinfestation: effect of non-chemical treatments on market quality of fruit.

Shellie, K. C.; Mangan, R.;

Postharvest handling of tropical fruits. Proceedings of an international conference, Chiang Mai, Thailand, 19-23 July 1993. Year: 1994 Pages: 304-310 Ref: 33 ref.

1994

บทคัดย่อ

ABSTRACT

Changes in fruit quality associated with disinfestation temperature treatments, insecticidal controlled atmospheres and irradiation are reviewed. A schematic model for the incorporation of fruit quality evaluations during the development of disinfestation treatment protocols is also discussed. In general, heat treatments increase fruit respiration rate and result in a reduction of respirable substrates in the fruit. The method of heat application may influence fruit physiological response. Chilling injury commonly develops in tropical fruits as a consequence of disinfestation cold treatments. Pre-treatment temperature conditioning and intermittent warming have been used successfully to avoid development of chilling injury symptoms. Insecticidal controlled atmospheres (0.5-3% O2, 5-20% CO2) at low temperatures have been reported to reduce fruit respiration, delay ripening, maintain flesh firmness and inhibit decay. The effect of irradiation on fruit quality is dependent on the commodity, irradiat

ion dose and irradiation dose rate. Non-chemical disinfestation treatments can potentially extend marketable shelf life and enhance financial returns, or deleteriously affect fruit market quality, increase spoilage and shorten marketable shelf life. Fruit quality changes should be routinely evaluated during the development of new disinfestation treatments to ensure that the recommended schedules maintain or enhance the market quality of fruit, in addition to providing quarantine security.