PENGARUH PELAPISAN CHITOSAN DAN SUHU SIMPAN TERHADAP KARAKTERISTIK FISIOLOGI JAMBU BIJI VARIETAS CITAYEM (Psidium guajava L var Citayem)

Abstract

Guava var. citayem (Psidium guajava L var Citayem) is a fruit that has a relatively short shelf life, so that requiring post-harvest handling in order to maintain the quality of the fruit during storage. The purpose of this research is to know the effect of chitosan coating and temperature store to physiology characteristics of guava fruit. Chitosan concentration used were 0%; 0.5%; 1%; 1.5%; 2% and the storage temperature used were 160Cand 300C. Physiological characteristics that observed were respiration rate, weight loss, fruit hardness, and moisture content. Observations was made on day 0; 2; 4; 6; and 8. Treatment of chitosan 1.5% at a temperature of 160C is able to suppress the rate of respiration, weight loss, and maintain fruit hardness and moisture content.

Keywords: Guava, chitosan, temperature storage, physiological characteristics