PEMANFAATAN KITOSAN UNTUK MEMPERPANJANG UMUR SIMPAN BUAH PEPAYA VARIETAS CALIFORNIA

Abstract

The aims of this study is to study the effect of chitosan coating on papaya during storage and to obtain a
chitosan concentration that appropriate to extend the self life of papaya varieties california. The design of
this study was a Block Randomized Design (BRD) with five treatments and four groups in order to obtain
twenty experiment units. The treatments in this study were the concentration of chitosan solution, including
K0: (control), K1: 0.5%, K2: 0.75%, K3: 1% and K4: 1.25%. Observations were made on days 0; 5; 10 and 15
on weight loss, texture, total soluble solids, vitamin C and total plate count. The observation of respiration
rate was performed on days 0 and 5. The data obtained were statistically analyzed using Analysis of Variance
(ANOVA). If the F count is greater than or equal to F table then continued with Duncan’s New Multiple Range
Test (DNMRT) at 5% level. The utilization of chitosan coating significantly affect weight loss, respiration
rate, texture, total dissolved solids, vitamin C and total plate count. The best treatment was based on the
parameters that have been tested was papaya with chitosan concentration of 1.25% (K4). The results showed
papaya varieties california stored up to 15 days experienced a weight loss of 7.55%, texture 10.20 kgf/cm2,
total dissolved solids 19.63p brix, vitamin C 15.58 mg and total plate count not detected. While the respiration
rate of K4 treatment on day 5 was12.07 mg CO2/kg/hour.