Optimization and pilot-scale testing of modified atmosphere packaging of irradiated fresh 'carbao' mango (Mangifera Indica L.) fruits

Issue Date

8-2010

Abstract

Modified atmosphere packaging (MAP) for fresh 'Carabao' mango was optimized with respect to the number of pinholes needed for a fixed respiration rate, fill weight, oxygen transmission rate (OTR), and bag surface area. Computer simulations showed that 38-mm polyethylene or 20-mm zeolite film with 52 or 44 pinholes, respectively, could be used for packing 5 kg of fruit in a bag with a surface area of approximately 0.08 m² if held at 12.5˚C. Subsequent laboratory trials using fruits irradiated at 150-250 Gy showed that 50 pinholes made with a 26-gauge cold needle could be used for both films; O₂ levels during storage were close to the recommended level of 3-5%. Pilot-scale trials using fruits harvested during the on-and off-season showed that both irradiation at 150-250 Gy and MAP could retard ripening and reduce softening. After 4 wk of storage at 12.5 ˚C, MAP fruits were at a half-ripe and slightly-firm stage of ripeness, with minimal development of disease. Sensory tests at the table-ripe stage showed that irradiated MAP-shored fruits were acceptable.

Source or Periodical Title

Philippine Journal of Crop Science

ISSN

0115-463x

Volume

35

Issue

2

Page

23-33

Document Type

Article

Frequency

tri-quarterly

Physical Description

tables, pictures

Language

English

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