ẢNH HƯỞNG CỦA MELATONINE KẾT HỢP MÀNG CHITOSAN ĐẾN SINH LÝ QUẢ CHANH DÂY TÍM (Passiflora edulis Sims) SAU THU HOẠCH

Quynh Luong Vu Mai; Long Nguyen Thi Thang; Tinh Nguyen Thi Thanh

doi:10.70169/VJFS.1140

Authors

Luong Vu Mai Quynh Trường Đại học Đà Lạt
Nguyen Thi Thang Long
Nguyen Thi Thanh Tinh

DOI:

https://doi.org/10.70169/VJFS.1140

Keywords:

Purple passion, chitosan, melatonin, Passiflora edulis, postharvest

Abstract

This study aimed to determine the optimal concentration of melatonin combined with a chitosan coating to extend shelf life and enhance the quality of purple passion fruit (Passiflora edulis Sims) under ambient conditions (25 °C, 90% relative humidity). In a two - factorial experiment, fruits were pre - treated with melatonin (0, 0.1, and 0.2 mM), then coated with chitosan (0%, 1%, and 2%), and monitored for physiological parameters over an 11 - day storage period. The results showed that the treatment with 0.2 mM melatonin combined with 2% chitosan had a positive effect on fruit physiology, as indicated by reduced ethylene production (181.69 μL C₂H₄ kg⁻¹ h⁻¹), delayed peak respiration until day 7, decreased weight loss (18.72% compared to 23.90% in the control), limited skin browning, and better retention of the characteristic purple color.

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