Pendugaan Lama Proses Perlakuan Panas pada Mangga Gedong Gincu menggunakan Metode Finite Difference

Abstract

One of the quarantine regulations for the fruit export, the fruit must be free from pests and diseases especially fruit fly that often result in loss. Heat Treatment is one of the post harvest technicque that can be used for quarantine, heat treatment has a three methods Hot Air Treatment (HAT), Hot Water Treatment (HWT) and Vapor Heat Treatment (VHT). Objective of this study is to estimate time process of heat treatment. Vapor heat treatment applied to gedong gincu mango with various size, small size (diameter 69.75 mm), medium size (diameter 70.35 mm) and large size (diameter 81.05 mm) to reach center of the fruit temperature 46.0 °C and the medium temperature 47.0 °C. Process of heat treatment on mango small size takes 40.6 minutes from estimation results while the measurements 39.3 minutes, for medium size mango estimation results 45.7 minutes and 50 minutes from the measurement results. And the large size mango takes 54.1 minutes for the estimation results and 52.7 minutes from the measurements to reach 46.0 °C at the center of the fruit