Advances in polymeric materials for modified atmosphere packaging (MAP)

Mangaraj, S.

doi:10.1533/9780857092786.1.163

Cited by 37 publications

(25 citation statements)

References 177 publications

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“…A superior result, however, was achieved by doubling the layer of the local barrier lm, Nylon, to cut down its OTR to almost a half. This result is comparable to published data, as the OTR linearly decreases with the increase in the laminate thickness (12,10,13). Although the cost is doubled by multiplying the local lm layers, it is still far beyond the cost of a single layer of other imported ones that were tested.…”

Section: Acquired Data Analysissupporting

confidence: 92%

Assessing The Suitability of New Film Laminates For Sustainable Insect Eradication By Modified Atmosphere In Museums

Elkhial

Elhadidi

2021

Preprint

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The increasing demand for applying modified inert atmosphere (MIA) systems for insect eradication in museums has led to the desire for lower-cost consumable materials, particularly laminated plastic films. An ultra-low oxygen-permeable laminate is required for creating successful MIA systems to keep the oxygen concentration lower than 0.3%, which is commercially available but at a high cost. The wide use of local laminated films for food preservation makes them a perfect target for testing and improvement for MIA applications. However, the lack of laboratory oxygen permeability test methods to gauge the potential of local laminates for inclusion in MIA applications distracts attention from looking at them as alternatives and encourages the expense on extremely expensive imported ones. Therefore, the present work investigates the potential of employing two laminates (one local and one imported) to create a successful leak-proof MIA system. A laboratory easy-to-use test method was developed to assess the oxygen-gas retention property of each laminate by measuring its oxygen permeability and consequently oxygen transmission rate (OTR). The test method is a sealed static diffusion chamber separated in the middle by a known area (cm2) of the test laminate to be tested. The test relies on measuring the concentration of oxygen in either sides of the laminate membrane within the sealed system and monitors the change over time to assess the OTR of the laminate. The specifications and design of the test chamber are adapted from the ASTM Designation: E2945 − 14, to meet the facilities of a typical artefact fumigation laboratory. The test is undertaken at standard MIA conditions (temperature of 25°C, relative humidity of 45%, and target oxygen concentration of 0.3). Results indicated that the new method is useful for an unlimited number of tests of an unlimited number of laminates. The conducted tests proved that the local laminate normally used for food packaging has superior advantages over the long-used imported ones.

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Section: Acquired Data Analysissupporting

confidence: 92%

Assessing The Suitability of New Film Laminates For Sustainable Insect Eradication By Modified Atmosphere In Museums

Elkhial

Elhadidi

2021

Preprint

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“…The kind of treatment, the storage time and the interaction between both factors had a significant effect in the respiration rate of the samples ( P < 0.05). In all samples, an increase in the respiration rate at the beginning was observed after 2 days of storage, due to the stress caused over the samples by the atmosphere changes . In the pre‐harvest application (Fig.…”

Section: Resultsmentioning

confidence: 90%

Effect on tomato plant and fruit of the application of biopolymer–oregano essential oil coatings

et al. 2016

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“…However, the application of MAP proved more effective in retention of higher fruit firmness of apple than normal (control) storage ( Figure 5). The retention of relatively higher fruit firmness under MA condition at lower temperature could be attributed to slower metabolic activities leading to lower substrate utilization, minimum ripening changes, regulation of ethylene biosynthesis and cellular disintegration (Gorny and Kader, 1996;Hardenburg, 1971;Kader, 1986;Hind and Abu-Bakr, 2003;Goswami and Mangaraj, 2011;Mangaraj et al, 2012a). The loss of firmness in fruits is also attributed to the change in pectic substances (Mohsenin, 1980;Mangaraj et al, 2005).…”

Section: Quality Assessment Of Ma Packaged and Unpackaged Fruitsmentioning

confidence: 99%

Development and evaluation of Modified Atmosphere (MA) packages<br>employing lamination technique for Royal Delicious apple

Mangarajbr

Goswamibr

Giribr

et al. 2013

Emir. J. Food Agric

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Modified atmosphere (MA) packages were prepared for Royal Delicious apple with an aim to achieve the optimum storage atmosphere within the packages in minimum possible time. Apples were harvested at their commercial maturity and respirtion rate of the fruits was measured at temperatures between 0 -25°C. On the basis of preliminary investigations, air composition with 3% O 2 and 3% CO 2 was found appropriate for MA packaging of apple. The MA package was finalized with a size of 24 cm x 19 cm for 1 kg fill-weight of apples. As the gas transmission rates of individual polymeric films could not match the gas transmission requirements of MAP, judicious combinations of the films were made to bring gas transmission characteristics close to the required values. The equilibrium concentrations of O 2 and CO 2 were established within 36-72 h under different storage temperatures. The mathematical model, developed applying enzymatic kinetics based respiration equation coupled with the Arrhenius model, effectively predicted the equilibrium time and the levels of O 2 and CO 2 at equilibrium. MA packages were evaluated through assessment of different quality parameters of apple during storage and were found to increase its shelf life by 125-210% that of unpacked fruits at different storage temperatures.

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Advances in polymeric materials for modified atmosphere packaging (MAP)

Cited by 37 publications

References 177 publications

Assessing The Suitability of New Film Laminates For Sustainable Insect Eradication By Modified Atmosphere In Museums

Assessing The Suitability of New Film Laminates For Sustainable Insect Eradication By Modified Atmosphere In Museums

Effect on tomato plant and fruit of the application of biopolymer–oregano essential oil coatings

Development and evaluation of Modified Atmosphere (MA) packages<br>employing lamination technique for Royal Delicious apple

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