ISHS Acta Horticulturae 269: Symposium on Tropical Fruit in International Trade
MODIFIED ATMOSPHERE PACKAGING (MAP) OF MANGO AND AVOCADO FRUIT |
| Authors: | G. Gonzalez, Elhadi M. Yahia, I. Higuera |
| Abstract:
Mango fruit (cv. Keitt) were individually packaged in low and high density polyethylene films (LDPE and HDPE) and kept at 20°C and 67% RH for 4 weeks. Characteristics of the films were determined. In-package O2 and CO2 were analyzed twice every week, and were found to be comparable to predicted atmospheres in LDPE but lower than predicted in HDPE. Fruits were evaluated objectively and subjectively every week for quality changes. MAP delayed fruit ripening, reduced weight losses, and did not result in any off-flavors. Avocado fruits (cv. Hass) were individually sealed in 5 films (4 LDPE and one HDPE) of different characteristics and kept at 5°C and 85% RH for 4 weeks. Three MAP treatments were used: one passive and two semi-active treatments. In semi-active MAP, CO2 or CO2 and N2 were introduced to the package immediately after sealing. Atmosphere changes were analyzed at intervals, and fruit were evaluated every week for texture changes, weight losses, and for development of chilling injury. Texture and weight losses were reduced by MAP and were least in thicker films. Initial atmosphere modification, although reduced the accumulation of C2H4 in the packages, did not result in any additional benefits in regard to fruit texture and weight losses. | |
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