The Effect of High-Pressure Processing on Tray Packages with Modified Atmosphere

Sterr, Julia; Fleckenstein, Benedikt Stefan; Langowski, Horst‐Christian

doi:10.1007/s12393-014-9081-z

Cited by 14 publications

(7 citation statements)

References 20 publications

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“…Sterr et al reported similar trends in crystallinity changes in PET film coated with metal oxide. They found that the in the amorphous region in the PET SiO x ‐based lid film increased as the package headspace increased from 15% to 50% . This reduction in the crystalline region may be attributed to the shear force applied between layers as they attempted to rearrange and delaminate.…”

Section: Resultsmentioning

confidence: 99%

“…They found that the in the amorphous region in the PET SiO x -based lid film increased as the package headspace increased from 15% to 50%. 17 This reduction in the crystalline region may be attributed to the shear force applied between layers as they attempted to rearrange and delaminate. This reduction accorded with our visual observations, in which the loss of transparency and whitening occurred in both films A and B.…”

Section: X-ray Diffractionmentioning

confidence: 99%

“…10,16 Most studies have focused on pressures ranging from 50 to 800 MPa and temperatures between 25°C and 95°C. These studies examined coextruded and laminated film structures, 17,18 including vacuum packaging with a minimal or fixed level of headspace. Fradin et al 7 recommended further research to investigate the effect of the package headspace on its performance and integrity.…”

Section: Introductionmentioning

confidence: 99%

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Role of package headspace on multilayer films subjected to high hydrostatic pressure

et al. 2019

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The objective of this study was to systematically examine the effect of high‐pressure processing and package headspace on package integrity and properties. Working pressures were 400 and 600 MPa, and starting vessel temperatures were 30°C, 60°C, and 90°C. Coextruded and laminated multilayers packaging films were studied: film A: (PA/EVOH/PP) and film B: (PET‐AlOx‐OC/PA6/PP), respectively. The films were made into pouches (0.05 m × 0.10 m) and filled with 30‐mL water as a model food. Various headspace volumes (0, 0.05, 0.10, 0.15, 0.20, 0.25, and 0.30‐cc air/mL H2O) were introduced into the packaging before processing. Imaging was used to quantify defects such as the formation of white spots on the package surface and delamination of film layers. The results showed that the headspace level and processing initial temperature had a greater effect than the operating pressure on visual defects. The package with 0% headspace did not show any physical damage to the tested films. Furthermore, thermal and mechanical analyses showed that the coextruded film A had better resistance to testing conditions than the laminated structure of film B. The X‐ray diffraction results showed that film B had more defects than film A that altered the crystalline structure. Visual observation revealed white spots and delamination in the inside layer (PP) in both films. The same processing conditions affected the oxygen and water vapour transmission rates of film B more than film A. This work provides a basic guideline to select the right headspace for a given type of packaged food whenever heat and pressure are used simultaneously.

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Section: Resultsmentioning

confidence: 99%

Section: X-ray Diffractionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Role of package headspace on multilayer films subjected to high hydrostatic pressure

et al. 2019

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“…The effects of high pressure treatment of packed food on the ‘must‐haves’ of their properties like visual integrity, gas and water vapour barrier and seal strength have been investigated in depth, see the reviews . Also the influence of new combinations such as high pressure, modified atmosphere and packaging design was investigated recently . However, no profound results have been published about the influence of high pressure treatment on the surface topography of polymeric films.…”

Section: Introductionmentioning

confidence: 99%

“…But the discussion of the SEM‐images has been more or less descriptively or has served as fortification for specific assumptions, for example that inorganic coatings are not suitable for high pressure processing (HPP). Nevertheless the surface of the packaging is of importance: The surface is the interface between food and packaging and thereby an influencing factor when considering migration aspects or the topic ‘white spots’, whose appearance in food and packaging cannot be explained thoroughly . For a better understanding of packaging–food‐high pressure interactions a comprehensive evaluation of the influence of HPP on the surface of polymeric films is required.…”

Section: Introductionmentioning

confidence: 99%

The Influence of High Pressure Treatment and Thermal Pasteurization on the Surface of Polymeric Packaging Films

Fleckenstein

Sterr

Langowski

2016

Packag. Technol. Sci.

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Several common single layer films (PE-HD, PE-LD, PP-BO, PA6-BO and PET-BO) and multilayer (PS/PE, PP-BO/PEpeel and PET-BO/PE) films were treated by either high pressure (600 MPa) or temperature (80°C/90°C) to simulate a high pressure or thermal pasteurization process. The samples were tested by atomic force microscopy (AFM), profile method and surface energy measurements to obtain information about the influence of the treatments on the surface topography and surface energy of the samples and by differential scanning calorimetry and by tensile testing concerning material properties. As key figures arithmetic surface roughness (by AFM at Pulsed Force Mode and profile method), surface energy by surface energy measurement and adhesion between tip and surface by AFM were extracted. Results indicate an influence of both high-pressure processing and thermal-processing on the surface roughness of biaxial oriented polymer films as single layer films. Laminated biaxially oriented polymer films showed no changes regardless of which processing was performed. The surface energy was hardly affected by both of the treatments for any stretched, non-stretched, single or laminated films.

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Pressure-Assisted Thermal Sterilization and Storage Stability of Avocado Puree in High Barrier Polymeric Packaging

Albahr

Al-Ghamdi

Tang

et al. 2022

Food Bioprocess Technol

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The Effect of High-Pressure Processing on Tray Packages with Modified Atmosphere

Cited by 14 publications

References 20 publications

Role of package headspace on multilayer films subjected to high hydrostatic pressure

Role of package headspace on multilayer films subjected to high hydrostatic pressure

The Influence of High Pressure Treatment and Thermal Pasteurization on the Surface of Polymeric Packaging Films

Pressure-Assisted Thermal Sterilization and Storage Stability of Avocado Puree in High Barrier Polymeric Packaging

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