Characteristics of Guava (Psidium guajava L.) Treated With Ozonation During Ambient Storage
Abstract
Crystal guava (Psidiumguajava L.) is a kind of fruit which easily damaged due to various factors. Without proper treatment, crystal guava will had physical damages. The aims of this study were to determine the differences in physical, chemical, microbiological characteristics, and pesticide residue between crystal guava treated and untreated in ozone. Ozonation process was conducted by using ozonizer TIP-01 at the concentration of 1.1 ppm for 5 minutes, and stored at room temperature (25± 2 0C) observed for 6 days with 2 replicates. The explanatory methods was employed followed by t-test. The characteristics observed were color lightness, hardness, vitamin C content, moisture content, totally microorganism, and pesticide residue. The results showed that after storage for 6 days at room temperature, the ozone treatment reduced the lightness, hardness, vitamin C content, totally microorganism, and pesticide residue, while moisture content increased.
Keywords: guava; ozone; ambient storage
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