Advances in innovative processing technologies for microbial inactivation and enhancement of food safety – pulsed electric field and low-temperature plasma

Wan, Jason; Coventry, John; Swiergon, Piotr; Sanguansri, Peerasak; Versteeg, Cornelis

doi:10.1016/j.tifs.2009.01.050

Cited by 154 publications

(53 citation statements)

References 67 publications

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“…The resistance of the treatment chamber is strongly related to the electrical conductivity of the food being treated, which is an intrinsic property of the product that influences the crucial process parameters [48,92]. According to Heinz et al [48], a raise in the food conductivity, produced by an increase in temperature due to the dissipated pulse energy, can reduce the chamber resistance.…”

Section: Pef Treatment Chambersmentioning

confidence: 99%

Food Preservation by Pulsed Electric Fields: An Engineering Perspective

2011

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Along the years, processing technologies for food preservation have been in constant development in order to meet current consumers' claims. In this way, researchers have been continuously working to understand the effects of different novel emerging technologies tested on foods to ensure microbiological stability as well as high quality attributes. Among these novel technologies, pulsed electric fields (PEF) have shown to be a potential non-thermal treatment capable of preserving liquid foods with freshlike characteristics. As a result, in the last decade, great technological advances have been accomplished regarding to PEF processing, such as improvement on the chamber designs, optimization of the process as well as achievement of high-quality-processed foods. This paper reviews the latest developments related to PEF technology for food preservation, the current designs of PEF treatment chambers, and modeling concepts applied for process optimization. In addition, some scaling-up considerations are included for future industrial implementation of PEF processing.

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Section: Pef Treatment Chambersmentioning

confidence: 99%

Food Preservation by Pulsed Electric Fields: An Engineering Perspective

2011

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“…One aspect is the microbicidal treatment, defined as the inactivation of microorganisms with the purpose to prevent infections. The inactivation of microorganisms and the removal of biological hazardous contaminants is generally of great interest not only for the conditioning of surgical instruments but also plays a substantial role in the entire field of life science (Moreau et al, 2008;Wan et al, 2009). This varies from microbicidal treatment of food or food containing enclosures, the prevention or cure of infectious diseases, the bleaching of teeth, the treatment of finger nails for improved adhesion, the installation of appropriate hygiene strategies, the sterilization of spacecrafts up to the use of plasmas sources for medical applications like wound disinfection or stimulus for wound healing Weltmann et al, 2008a;Lee et al, 2010;Cooper et al, 2007;Kaemling et al, 2005;Weltmann et al, 2010).…”

Section: Introductionmentioning

confidence: 99%

Low temperature atmospheric pressure plasma sources for microbial decontamination

Ehlbeck¹,

Schnabel²,

Polák³

et al. 2010

J. Phys. D: Appl. Phys.

642

415

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To cite this version:J EhlbeckAbstract. The aim of this article is to provide a survey of plasma sources at atmospheric pressure used for microbicidal treatment. In order to consider the interdisciplinary character of this topic an introduction and definition of basic terms and procedures is given for plasma as well as for microbicidal issues. The list of plasma sources makes no claim to be complete, but to represent the main principles of plasma generation at atmospheric pressure and to give an example of their microbicidal efficiency. The interpretation of the microbicidal results remain difficult due to the non standardized methods uses by different authors and due to the fact that small variations in the set up can change the results dramatically.

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“…In conclusion, a positively relationship between the changes in membrane permeability of B. subtilis exposed to PMF and the number of pulses was found. It was proposed that the formation of reversible permeabilisation of bacterial cells was responsible for the sublethal injury caused by pulsed electric field [38].…”

Section: Changes Of Membrane Permeabilitymentioning

confidence: 99%

Biological Effect and Inactivation Mechanism of Bacillus subtilis Exposed to Pulsed Magnetic Field: Morphology, Membrane Permeability and Intracellular Contents

Qian

Zhou

et al. 2016

Food Biophysics

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Biological effect and inactivation mechanism of Bacillus subtilis exposed to pulsed magnetic field (PMF) were investigated. Cell morphology, membrane permeability, release of intracellular proteins and damage of deoxyribonucleic acid (DNA) were monitored. The inactivation effect of PMF treatment on B. subtilis was enhanced with the increase in intensity and pulse number. Scanning electron microscopy (SEM) analysis showed that the PMF treated bacterial cells had rough surfaces and damaged cellular membranes. Flow cytometry measurements showed that the cell membrane permeability increased after the PMF treatment. Leakage of intracellular contents, measured as OD, significantly increased with the increase in PMF intensity and pulsed number. A maximum leakage of cytoplasmic contents was detected at intensity of 3.30 T and 30 pulses. Enterobacterial repetitive intergenic consensuspolymerase chain reaction (ERIC-PCR) fingerprint signaled that the DNA was fragmented after the PMF treatment at the intensity of 3.0 T with 30 pulses and 3.3 T with 10, 20 and 30 pulses. These findings may give clues to the mechanism of bacterial cell death due to the PMF treatment.

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Advances in innovative processing technologies for microbial inactivation and enhancement of food safety – pulsed electric field and low-temperature plasma

Cited by 154 publications

References 67 publications

Food Preservation by Pulsed Electric Fields: An Engineering Perspective

Food Preservation by Pulsed Electric Fields: An Engineering Perspective

Low temperature atmospheric pressure plasma sources for microbial decontamination

Biological Effect and Inactivation Mechanism of Bacillus subtilis Exposed to Pulsed Magnetic Field: Morphology, Membrane Permeability and Intracellular Contents

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