Physiological characteristics of postharvest Barangan banana based on harvest time differences

Abstract

Barangan banana is a local variety, included in climacteric fruit. The purpose of this study is to determine the optimum storage time based on the physiological characteristics of postharvest Barangan banana on harvest time differences. Samples are used 10 (P10), 11 (P11), 12 (P12) week after cutting banana heart, stored at room temperature (25±2°C), RH ±85% for 15 days. Measurements of respiration rate and ethylene were carried out for 6 days in a continuously closed chamber. Air samples in the chamber were taken every 3 hours through headspace as much 1 ml to be analyzed. Results showed that sample P12 was stimulated by ethylene earlier changed the respiration rate faster than another. The brightness level (L*), P11, and P12 get a peak value on the 6th day, while the P10 continues to increase until the 15th day. The hue value for P12 occurred the fastest yellow change, then approached black color after day 12th, whereas P10 and P11 turn yellow later than P12 but still maintain yellow until the 15th day. The level of firmness, all samples get a decrease in the level of firmness until the 15th day. TSS at P12 gets a change in peak on the 6th day, while P10 and P11 get a peak on the 12th day. The optimum storage time for P12 is 6 days, while P10 and P11 are 12 days after harvest.