Incorporation of ZnO Nanoparticle in Starch-Based Edible Coating Matrix for Preservation of Red Globe (<i>Vitis vinifera</i> Linn.)

Abstract

Red Grapes or Red Globe (Vitis vinifera Linn.) is a delicate fruit easily damaged and bruised. The changes in the texture of Red Globe flesh and shrinkage happened if it kept too long, even in the low temperature. This condition is disadvantageous, especially for fruit sellers or vendors. Therefore, the edible coating is important to help the fruit's freshness by protecting its surface with its coating. Starch is one of the sources of an edible coating obtained from jackfruit seed since it contains 52.53% of amylase. This study aimed to examine the potential of jackfruit seed starch as an edible coating for the preservation of Red Globe. Furthermore, the incorporation of ZnO nanoparticles in the edible coating matrix was also examined for vitamin C of the Red Globe since ZnO has selective toxicity toward bacteria. The edible coating incorporated with ZnO nanoparticle was characterized based on ash content, water content, FTIR, and SEM. The results showed that ZnO nanoparticle was successfully incorporated in the edible coating matrix. In addition, the effect of edible coating on Red Globe freshness was also observed.