Radio Frequency-Hot Water Dips for Postharvest Codling Moth Control in Apples

Abstract

A combination radio frequency-hot water dip method was examined as

Effect of alternative postharvest control treatments on the storability of ‘Golden Delicious’ apples

“…Bitter pit in apples can be similarly exacerbated by heat treatments . The relationship between heat treatments and physiologically related disorders has been studied previously . Thermo‐tolerance in apples is field induced and follows a daily cycle.…”

“…A decrease in the activity of cell wall hydrolytic enzymes, inhibition of uronic acid degradation (resulting in higher insoluble pectin content than soluble pectin content), and an increase in calcium bonded to the cell wall, resulting in firmer fruit, have been hypothesised as mechanisms for delayed softening . Conversely, in several cases an exposure to a non‐tolerated high temperature for an excessive time seems to cause greater or no significant loss of firmness when compared to untreated fruit …”

RADIO FREQUENCY PULSE APPLICATION FOR HEATING UNIFORMITY IN POSTHARVEST CODLING MOTH (LEPIDOPTERA: TORTRICIDAE) CONTROL OF FRESH APPLES (MALUS DOMESTICA BORKH.)

“…RF treatments have been examined for codling moth control in apples, but have suffered because of the lack of uniform temperatures within the fruits even though the fruits were moving within a water‐filled container and then held for durations in a hot water bath (Birla et al . 2004; Hansen et al . 2004a, 2006) A possible solution to nonuniform heating is to use the pulse mode on the RF unit where energy is applied in short bursts, followed by an inactive period to allow for heat dispersal.…”

Hot air drying characteristics and nutrients of apricot armeniaca vulgaris lam pretreated with Radio Frequency(RF)

“…New type of heating method, RF receives more and more attentions in recent years for lots of advantages such as selective heating, selfbalancing effect of moisture content, large energy penetration depth and fast heating rate [5] , etc. There are several literatures on RF used in drying of agricultural products, deinsectization, sterilization [6,8] . Zhang and others [9] investigated RF conbimed with hot air drying red jujube, drying time was shortened by 2/3.…”