Effect of Wax Coating on Post Harvest Quality Parameters and Sensory Characteristics of Oranges

Abstract

Various wax preservatives (Aloe vera gel, polyethene film, Candle wax, and Control) were evaluated to determine their effect on sensory characteristics (color, texture, and overall acceptability) of sweet oranges (Citrus sinensis) preserved at ambient temperature for 21 days. The goal of this study is to extend the shelf life of harvested oranges by the application of Aloe Vera wax, paraffin wax and polyethylene film to evaluate the treatment that will enhance physico-chemical parameters as well sensory characteristics. Other parameters examined were weight loss, pH, Total sugar (brix), Total solid, ash, moisture and vitamin C content. Results indicated that weight loss was observed across samples, however the weight loss was least with Aloe vera coated oranges which showed a significantly higher weight value (170.57 gm) after 3 weeks of storage. Sensory profile results showed that Aloe vera coated oranges had higher color and overall acceptability scores of 6.65 and 7.20 respectively. Also, the aloes vera coated oranges showed higher vitamin C content (24.15 mg/100 ml), indicating that oranges coated with Aloe vera gel prevented the deterioration of vitamin C during the period of storage.