Effects of Modified Atmosphere Packaging (MAP) With and Without Chemicals on Postharvest Characteristics of Mango (Mangifera indica L.) cv. Sein-ta-lone
W. Naing, H. Aung and S.H. Bo
Book of Abstract. APEC Symposium on Assuring Quality and Safety of Fresh Produce, August 1-3, 2005, Bangkok, Thailand. 76 page.
2005
บทคัดย่อ
The experiment was conducted at the Department of Horticulture, YAU, from May to June 2003. Six treatments were given under two packaging systems: non-perforated polyethylene bag (UPB) and perforated polyethylene bag (PPB). Treatments were T1– only washing with water; T2 – dipping in hot water for 5 min; T3 – blotting paper soaked with KMnO4 solution; T4 – quick dipping in 50 ppm GA3 solution; T5 – immersing in 2 % CaCl2 solution for 10 min; and T6 – control (non packed). Under packaging with PPB, T4 (GA3) significantly reduced weight loss, retained more fruit firmness compared to T6 (Control). But it was not significantly different from the other treatments at p=0.05.The high interaction was observed between packaging systems and postharvest treatments on peel colour development. It was obvious in PPB storage that three chemical treatments namely T3 (KMnO4), T4 (GA3), and T5 (CaCl2) showed comparatively less in peel colour rating compared to T6 (Control) at p=0.05. Fruits from almost all treatments under UPB showed significantly less weight loss, more fruit firmness, and slower peel colour development than did the fruits in PPB at p= 0.05. T2 (HWD) gave the lowest severity of body rot and stem-end rot among the treatments and significantly reduced fruit decay compared to other treatments under both packaging systems at p= 0.05.