Characteristics of Fresh-Cut Guava Coated with Aloe vera Gel as Affected by Different Additives

Abstract

The effect of additives in Aloe vera (AV) gel coating was investigated on fresh-cut guava stored at 5 °C and 75–80% relative humidity. Eight treatments were employed involving three additives and their combinations. A control sample coated only with AV gel and a comparison sample of uncoated fresh-cut guava were also prepared. The additives used were 1.5% ascorbic acid (AA), 2% calcium chloride (CaCl2), and 0.2% potassium sorbate (PS). Additives helped to extend the shelf life of the coated samples, with PS and AA giving the highest inhibition effects. AV + CaCl2-coated guava showed the lowest weight loss (3.57 ± 0.39%) whilst maintaining sufficient hardness. The coated samples had less change in the color lightness and yellowness compared to the uncoated sample. Five selected coated samples and a fresh uncoated sample were then subjected to sensory acceptance testing. AV + AA + PS-coated guava was the most acceptable sample. Moreover, it gave the highest ascorbic acid content (190.00 ± 14.14 mg per 100 g). With suitable additives, AV gel has potential as an edible coating for fresh-cut guava due to its ability to prolong the shelf life and maintain characteristics of the fruit for a longer time.