Development of a mathematical model for simulating gas and water vapor exchanges in modified atmosphere packaging with macroscopic perforations

Techavises, Nutakorn; Hikida, Yoshio

doi:10.1016/j.jfoodeng.2007.07.014

Cited by 76 publications

(45 citation statements)

References 18 publications

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“…An apparent permeability term is used for these films, which is a function of the film permeability and of the number and size of holes. For holes of equal size, the governing equation which describes the effect of temperature on permeability of macroscopic films is as follows [52,95,154]:…”

Section: Packaging System In Mapmentioning

confidence: 99%

Applications of Plastic Films for Modified Atmosphere Packaging of Fruits and Vegetables: A Review

2009

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Modified atmosphere packaging (MAP) of fresh produce relies on the modification of atmosphere inside the package achieved by the natural interplay between two processes: the respiration rates of the commodity and the permeability of the packaging films. MAP has been a proven technology to meet the consumer's demand for more natural and fresh foods, which is increasing day by day. Because of its dynamic phenomenon, respiration and permeation take place simultaneously, and it is necessary to design the MAP system and select the matching films to achieve desired atmosphere early and maintain as long as possible. To meet the desired film characteristics for MAP, the different plastic films are either laminated or coextruded. In this modern world, the packaging films of required gas transmission properties are made available through advanced technology. Although the MAP industry has an increasing choice of packaging films, most packs are still constructed from four basic sustainable polymers: polyvinyl chloride (PVC), polyethylene terephthalate (PET), polyproylene (PP) and polyethylene (PE) for packaging of fresh produce. Polystyrene has also been used but polyvinylidene, polyester and nylon have such low gas permeabilities that they would be suitable only for commodities with very low respiration rates.

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Section: Packaging System In Mapmentioning

confidence: 99%

Applications of Plastic Films for Modified Atmosphere Packaging of Fruits and Vegetables: A Review

2009

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“…The permeability of a material to different gases will be determined by its molecular structure, thickness, surface area available for mass transfer, concentration gradient, pressure differential and temperature [13,39,64]. For some biopolymers, the relative humidity should also be considered [40].…”

Section: Gas Permeation Through the Packaging Filmmentioning

confidence: 99%

Modified Atmosphere Packaging: Design and Optimization Strategies for Fresh Produce

Castellanos¹,

Herrera²

2017

Postharvest Handling

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Modified atmosphere packaging (MAP) is a useful preservation system that allows to significantly increase the shelf life of fruits and vegetables. The MAP results of changing the composition of the atmosphere in the packaging headspace due to the dynamic interaction between the metabolic processes of the packaged product on the one hand, in which O 2 is consumed and another gases such as CO 2 and water vapor are generated, and on the other hand, by transferring all of these gases through the package. The aim of the system is to balance these two processes in such a way that constant levels of these different gases are reached in the packaging headspace and that these equilibrium levels are as favorable as possible to preserve the product. This chapter describes design strategies to obtain a satisfactory gas transfer capacity in the MAP system through the configuration of several related variables such as the type of packing material, its thickness, the transfer surface area and the required number and diameter of perforations. For this, the necessary steps are proposed to estimate the appropriate transfer capacity according to the equilibrium gas concentrations desired to longer preserve the product by using the mass balance equations of the MAP system.

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“…The diameter of each perforation was 0.3 mm (Schreiner et al, 2007;Rai et al, 2008). Macro perforations provide additional gaseous diffusion across the film packages (Techavises and Hikida, 2008) and therefore can be used to increase the gas permeability of ordinary polymeric films. The package used for packaging were procured from market of same gauge (150 gauge), but on actually measuring the thickness in laboratory with the help of thickness tester (Labthink, model CHY-C2, China) it was found that thickness of LDPE film was 40µm and that of PP film was 36 .…”

Section: Packaging and Storagementioning

confidence: 99%

“…The gas permeability coefficients of the LDPE packaging film for O 2 and CO 2 at 15°C, measured by a gas permeability tester (Labthink, model BTY-B1P, China) were observed to be 5.96 × 10 -5 and 2.52× 10 -4 ml m m -2 h -1 kPa -1 , respectively and for the PP packaging film, they were observed to be 1.49 × 10 -5 and 5.24× 10 -5 ml m m -2 h -1 kPa -1 , respectively. Effective permeability of gases and water vapour through perforations was estimated by the following relationship given by Techavises and Hikida (2008) which is valid for temperature range of 5-25 o C and film thickness of less than 0.025 mm. The effective permeability of the perforation was 0.986 ml.h -1 kPa -1 , taken to be equal for both O 2 and CO 2 .…”

Section: Packaging and Storagementioning

confidence: 99%

Changes in Quality of Broccoli Stored under Modified Atmosphere Packaging in Polymeric Films

Kumar¹,

Singh²

2017

Int.J.Curr.Microbiol.App.Sci

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Development of a mathematical model for simulating gas and water vapor exchanges in modified atmosphere packaging with macroscopic perforations

Cited by 76 publications

References 18 publications

Applications of Plastic Films for Modified Atmosphere Packaging of Fruits and Vegetables: A Review

Applications of Plastic Films for Modified Atmosphere Packaging of Fruits and Vegetables: A Review

Modified Atmosphere Packaging: Design and Optimization Strategies for Fresh Produce

Changes in Quality of Broccoli Stored under Modified Atmosphere Packaging in Polymeric Films

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