ศูนย์นวัตกรรมเทคโนโลยีหลังการเก็บเกี่ยว

The cold treatment of citrus fruit.

D'Anna, R., Amico, C., Lanza, G. and Manzo, A.

L’Informatore Agrario 19: 61-64.

2001

บทคัดย่อ

The use of cold storage, as an alternative to fumigation, to control harmful insects on stored citrus fruits is reviewed. Technical requirements are outlined, such as the use of continuous refrigeration systems in fruit containers, equipment (sensors) to maintain and monitor temperatures inside containers, pre-refrigeration of fruit on farms, the use of only one fruit species and packaging material within one load of produce, positioning and numbers of sensors inside fruit loads, and the operation of sensors during transport. Relationships between Italy and potential importing countries (USA, Canada, South Africa, Japan and Australia) are outlined. A table is presented of temperature regimes inside a fruit container. The effects of cold storage on fruit quality are described, including juiciness, acidity, levels of vitamin C [ascorbic acid] and anthocyanins, firmness. Physicochemical parameters before and after cold storage of Tarocco oranges are presented, including damage index caused by cold, necrosis and rot caused by Penicillium. Recommendations are presented for effective cold storage, including washing, application of fungicides, positioning of pallets for improved air circulation, and preconditioning of susceptible citrus cultivars by cold storage to increase their resistance to low temperatures.