Perforation effects in modified-atmosphere packaging: model and applications to bell pepper and mango fruits.
Ben-Yehoshua, S.; Rodov, V.; Fishman, S.; Peretz, J.; Asuncion, R. de la; Burns, P.; Sornsrivichai, J.; Yantarasri, T.;
Proceedings of the Australasian postharvest horticulture conference 'Science and technology for the fresh food revolution', Melbourne, Australia, 18-22 September, 1995. Year: 1996 Pages: 143-162 Ref: 36 ref.
1996
บทคัดย่อ
Optimization of several parameters of the modified atmosphere system for mangoes and bell peppers [Capsicum] was promoted by perforating the packaging film. This perforation greatly affected O2 and CO2 concentrations and water condensation but much less so the in-package relative humidity. Consequently, regulation of the extent of perforation could be used to control atmosphere composition and water condensation in the package without a significant increase in fruit weight loss. Bell peppers packaged in perforated film lost less weight during storage and maintained higher quality than fruits stored in open carton boxes, and at the same time demonstrated lower decay levels than fruits sealed in non-perforated packages. Perforation as well as the introduction of hygroscopic materials, such as NaCl, effectively reduced the percentage of Botrytis decay in bell pepper fruits. Perforating the film cancelled the inhibition of the ripening process that prevailed in mangoes (cv. Tommy Atkins) in non-perf
orated packages. Perforated packaging of mangoes and peppers retained most of the advantages of the non-perforated packages. A dynamic model of gas and water vapour exchange in perforated and non-perforated packages containing fresh fruit or vegetables was developed on the basis of Michaelis-Menten kinetics in combination with Fick's diffusion law. Use of computer simulations could enable evaluation of package specifications which would provide optimal conditions for storage of a given commodity. Model predictions were confirmed by measured observations.