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Zare F, Ghasemi N, Bansal N, Hosano H. Advances in pulsed electric stimuli as a physical method for treating liquid foods. Phys Life Rev 2023; 44:207-266. [PMID: 36791571 DOI: 10.1016/j.plrev.2023.01.007] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2023] [Accepted: 01/28/2023] [Indexed: 02/05/2023]
Abstract
There is a need for alternative technologies that can deliver safe and nutritious foods at lower costs as compared to conventional processes. Pulsed electric field (PEF) technology has been utilised for a plethora of different applications in the life and physical sciences, such as gene/drug delivery in medicine and extraction of bioactive compounds in food science and technology. PEF technology for treating liquid foods involves engineering principles to develop the equipment, and quantitative biochemistry and microbiology techniques to validate the process. There are numerous challenges to address for its application in liquid foods such as the 5-log pathogen reduction target in food safety, maintaining the food quality, and scale up of this physical approach for industrial integration. Here, we present the engineering principles associated with pulsed electric fields, related inactivation models of microorganisms, electroporation and electropermeabilization theory, to increase the quality and safety of liquid foods; including water, milk, beer, wine, fruit juices, cider, and liquid eggs. Ultimately, we discuss the outlook of the field and emphasise research gaps.
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Affiliation(s)
- Farzan Zare
- School of Information Technology and Electrical Engineering, The University of Queensland, Brisbane, St Lucia QLD 4072, Australia; School of Agriculture and Food Sciences, The University of Queensland, St Lucia QLD 4072, Australia
| | - Negareh Ghasemi
- School of Information Technology and Electrical Engineering, The University of Queensland, Brisbane, St Lucia QLD 4072, Australia
| | - Nidhi Bansal
- School of Agriculture and Food Sciences, The University of Queensland, St Lucia QLD 4072, Australia
| | - Hamid Hosano
- Biomaterials and Bioelectrics Department, Institute of Industrial Nanomaterials, Kumamoto University, Kumamoto 860-8555, Japan.
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Zhou J, Hung YC, Xie X. Making waves: Pathogen inactivation by electric field treatment: From liquid food to drinking water. WATER RESEARCH 2021; 207:117817. [PMID: 34763276 DOI: 10.1016/j.watres.2021.117817] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/30/2021] [Revised: 09/25/2021] [Accepted: 10/25/2021] [Indexed: 06/13/2023]
Affiliation(s)
- Jianfeng Zhou
- School of Civil and Environmental Engineering, Georgia Institute of Technology, Atlanta, GA, USA
| | - Yen-Con Hung
- Department of Food Science and Technology, College of Agriculture and Environmental Sciences, University of Georgia, Griffin, GA, USA
| | - Xing Xie
- School of Civil and Environmental Engineering, Georgia Institute of Technology, Atlanta, GA, USA.
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Asaithambi N, Singh SK, Singha P. Current status of non-thermal processing of probiotic foods: A review. J FOOD ENG 2021. [DOI: 10.1016/j.jfoodeng.2021.110567] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
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The effect of reversible permeabilization and post-electroporation resting on the survival of Thai basil (O. Basilicum cv. thyrsiflora) leaves during drying. Bioelectrochemistry 2021; 142:107912. [PMID: 34358981 DOI: 10.1016/j.bioelechem.2021.107912] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2021] [Revised: 06/18/2021] [Accepted: 07/23/2021] [Indexed: 11/23/2022]
Abstract
Horticultural crops have a low tolerance to dehydration. In this paper, we show that the reversible electroporation (200 monopolar, rectangular pulses of 50 µs pulse duration, 760 µs between pulses and nominal field strength of 650 V/cm) of Thai basil leaves followed by 24 h resting before hot air drying at 40 °C enhanced the survivability of the tissues at certain levels of dehydration (moisture ratio = 0.2 and 0.1). However, this increased survival was rather limited. Through measurements of metabolic heat production during resting, rehydration kinetics, respiration and photosynthesis of the rehydrated leaves, we show that resting after the application of a reversible pulse-electric field (PEF) may allow a phase of hardening that has a protective effect on the cells, thus decreasing damage during the subsequent drying phase. Increased preservation of cell vitality would be associated with a more turgid and fresh-like rehydrated product, as cells would have the capacity to retain the rehydration water.
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Peng K, Koubaa M, Bals O, Vorobiev E. Effect of Pulsed Electric Fields on the Growth and Acidification Kinetics of Lactobacillus delbrueckii Subsp. bulgaricus. Foods 2020; 9:E1146. [PMID: 32825249 PMCID: PMC7555770 DOI: 10.3390/foods9091146] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2020] [Revised: 08/13/2020] [Accepted: 08/19/2020] [Indexed: 11/17/2022] Open
Abstract
The aim of this work was to investigate the effect of pulsed electric fields (PEF) on the growth and acidification kinetics of Lactobacillus delbrueckii subsp. bulgaricus CFL1 during fermentation. The PEF treatments were applied during the fermentation process using a recirculation pump and a PEF treatment chamber coupled with a PEF generator. The medium flow rate through the chamber was first optimized to obtain the same growth and acidification kinetics than the control fermentation without medium recirculation. Different PEF intensities (60-428 V cm-1) were then applied to the culture medium to study the impact of PEF on the cells' behavior. The growth and acidification kinetics were recorded during the fermentation and the specific growth rates µ, pH, and acidification rate (dpH/dt) were assessed. The results obtained showed a biphasic growth by applying high PEF intensities (beyond 285 V cm-1) with the presence of two maximal specific growth rates and a decrease in the acidification activities. It was demonstrated that the cells were stressed during the PEF treatment, but presented an accelerated growth after stopping it, leading thereby to similar absorbance and pH at the end of the fermentation. These results show the great potential of PEF technology to be applied to generate low acidified products by performing PEF-assisted fermentations.
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Affiliation(s)
- Kaidi Peng
- Sorbonne University, Université de Technologie de Compiègne, ESCOM, EA 4297 TIMR, Centre de Recherche Royallieu, CS 60319, CEDEX 60203 Compiègne, France; (K.P.); (O.B.); (E.V.)
| | - Mohamed Koubaa
- ESCOM, UTC, EA 4297 TIMR, 1 Allée du Réseau Jean-Marie Buckmaster, 60200 Compiègne, France
| | - Olivier Bals
- Sorbonne University, Université de Technologie de Compiègne, ESCOM, EA 4297 TIMR, Centre de Recherche Royallieu, CS 60319, CEDEX 60203 Compiègne, France; (K.P.); (O.B.); (E.V.)
| | - Eugène Vorobiev
- Sorbonne University, Université de Technologie de Compiègne, ESCOM, EA 4297 TIMR, Centre de Recherche Royallieu, CS 60319, CEDEX 60203 Compiègne, France; (K.P.); (O.B.); (E.V.)
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Głral M, Pankiewicz U, Sujka M, Kowalski R, Góral D, Kozłowicz K. Influence of Pulsed Electric Field on Accumulation of Calcium in Lactobacillus rhamnosus B 442. J Microbiol Biotechnol 2020; 30:44-53. [PMID: 31838798 PMCID: PMC9728274 DOI: 10.4014/jmb.1908.08064] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Calcium is an element that performs many important functions in the human body. A study was conducted on the use of a pulsed electric field (PEF) to enrich cells of Lactobacillus rhamnosus B 442 in calcium ions. The highest concentration of calcium ions in bacterial cells (7.30 mg/g d.m.) was obtained at ion concentration of 200 µg/ml of medium and with the use of the following PEF parameters: field strength 3.0 kV/cm, exposure time 10 min, pulse width 75 ms and 20 h of culturing after which bacteria were treated with the field. Cell biomass varied in the range from 0.09 g/g d.m. to 0.252 g/g d.m., and the total number of bacteria ranged from 1010 CFU/ml to 1012 CFU/ml. Microscope photographs prove that calcium ions were situated within the cells of the bacteria, and electroporation contributed to an increase in the effectiveness of the ion bioaccumulation process. Samples containing calcium and subjected to electroporation displayed intensive fluorescence. The significance of this research was the possibility of using probiotic bacteria enriched with calcium ions for the production of functional food in subsequent studies.
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Affiliation(s)
- Maógorzata Głral
- Department of Analysis and Food Quality Assessment, Faculty of Food Science and Biotechnology University of Life Sciences, Skromna 8, 20-704, Lublin, Poland
| | - Urszula Pankiewicz
- Department of Analysis and Food Quality Assessment, Faculty of Food Science and Biotechnology University of Life Sciences, Skromna 8, 20-704, Lublin, Poland,Corresponding author Phone: +48-81-462-33-29 E-mail:
| | - Monika Sujka
- Department of Analysis and Food Quality Assessment, Faculty of Food Science and Biotechnology University of Life Sciences, Skromna 8, 20-704, Lublin, Poland
| | - Radosław Kowalski
- Department of Analysis and Food Quality Assessment, Faculty of Food Science and Biotechnology University of Life Sciences, Skromna 8, 20-704, Lublin, Poland
| | - Dariusz Góral
- Department of Analysis and Food Quality Assessment, Faculty of Food Science and Biotechnology University of Life Sciences, Skromna 8, 20-704, Lublin, Poland
| | - Katarzyna Kozłowicz
- Department of Biological Bases of Food and Feed Technologies, Faculty of Production Engineering, University of Life Sciences, Głęboka 8, 0-61, Lublin, Poland
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Application of mild pulsed electric fields on starter culture accelerates yogurt fermentation. Eur Food Res Technol 2020. [DOI: 10.1007/s00217-020-03428-9] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
AbstractThe goal of this work was to investigate the influence of pulsed electric fields (PEF) operational parameters on a mixture of Streptococcus thermophilus DIL 5218 and Lactobacillus delbrueckii subsp. bulgaricus DSMZ 20081T with regards to the culture’s acidification capability in reconstituted skim milk medium. We investigated the effects of field strength, pulse frequency and total number of pulses by use of design of experiments and a two-level full factorial design. The responses were the cell counts of the two microorganisms after PEF application, the pH lag phase λpH, the maximum pH change rate µmax, the maximum pH change and the oxidation/reduction potential (ORP). The application of PEF on the mixed culture accelerated the acidification of milk by an average of 12 min in an approx. 160 min lasting control λpH. In contrast the maximum pH change rate µmax and the maximum pH change decreased slightly in fermentations with PEF-treated cultures. Furthermore, a significantly faster decrease of the oxidation/reduction potential (ORP) already within the first 30 min and a lower final ORP was observed in milk fermented with PEF-treated culture. The total number of pulses applied was the most influencing factor in most of the responses measured. We hypothesized that the reason for the enhanced performance of the PEF-treated culture was a combination of an oxidative stress response of S. thermophilus DIL 5218 and an enhanced proteolytic phenotype in L. delbrueckii subsp. bulgaricus DSMZ 20081T.
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Góral M, Pankiewicz U, Sujka M, Kowalski R. Bioaccumulation of zinc ions in Lactobacillus rhamnosus B 442 cells under treatment of the culture with pulsed electric field. Eur Food Res Technol 2019. [DOI: 10.1007/s00217-018-3219-9] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
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Wang Q, Li Y, Sun DW, Zhu Z. Enhancing Food Processing by Pulsed and High Voltage Electric Fields: Principles and Applications. Crit Rev Food Sci Nutr 2018; 58:2285-2298. [PMID: 29393667 DOI: 10.1080/10408398.2018.1434609] [Citation(s) in RCA: 44] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Abstract
Improvements in living standards result in a growing demand for food with high quality attributes including freshness, nutrition and safety. However, current industrial processing methods rely on traditional thermal and chemical methods, such as sterilization and solvent extraction, which could induce negative effects on food quality and safety. The electric fields (EFs) involving pulsed electric fields (PEFs) and high voltage electric fields (HVEFs) have been studied and developed for assisting and enhancing various food processes. In this review, the principles and applications of pulsed and high voltage electric fields are described in details for a range of food processes, including microbial inactivation, component extraction, and winemaking, thawing and drying, freezing and enzymatic inactivation. Moreover, the advantages and limitations of electric field related technologies are discussed to foresee future developments in the food industry. This review demonstrates that electric field technology has a great potential to enhance food processing by supplementing or replacing the conventional methods employed in different food manufacturing processes. Successful industrial applications of electric field treatments have been achieved in some areas such as microbial inactivation and extraction. However, investigations of HVEFs are still in an early stage and translating the technology into industrial applications need further research efforts.
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Affiliation(s)
- Qijun Wang
- a School of Food Science and Engineering , South China University of Technology , Guangzhou 510641 , China.,b Academy of Contemporary Food Engineering , South China University of Technology, Guangzhou Higher Education Mega Center , Guangzhou 510006 , China.,c Engineering and Technological Research Centre of Guangdong Province on Intelligent Sensing and Process Control of Cold Chain Foods , Guangzhou Higher Education Mega Center , Guangzhou 510641 , China
| | - Yifei Li
- a School of Food Science and Engineering , South China University of Technology , Guangzhou 510641 , China.,b Academy of Contemporary Food Engineering , South China University of Technology, Guangzhou Higher Education Mega Center , Guangzhou 510006 , China.,c Engineering and Technological Research Centre of Guangdong Province on Intelligent Sensing and Process Control of Cold Chain Foods , Guangzhou Higher Education Mega Center , Guangzhou 510641 , China
| | - Da-Wen Sun
- a School of Food Science and Engineering , South China University of Technology , Guangzhou 510641 , China.,b Academy of Contemporary Food Engineering , South China University of Technology, Guangzhou Higher Education Mega Center , Guangzhou 510006 , China.,c Engineering and Technological Research Centre of Guangdong Province on Intelligent Sensing and Process Control of Cold Chain Foods , Guangzhou Higher Education Mega Center , Guangzhou 510641 , China.,d Food Refrigeration and Computerized Food Technology (FRCFT), Agriculture and Food Science Centre , University College Dublin, National University of Ireland , Belfield , Dublin 4 , Ireland
| | - Zhiwei Zhu
- a School of Food Science and Engineering , South China University of Technology , Guangzhou 510641 , China.,b Academy of Contemporary Food Engineering , South China University of Technology, Guangzhou Higher Education Mega Center , Guangzhou 510006 , China.,c Engineering and Technological Research Centre of Guangdong Province on Intelligent Sensing and Process Control of Cold Chain Foods , Guangzhou Higher Education Mega Center , Guangzhou 510641 , China
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10
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Góral M, Pankiewicz U. Effect of Pulsed Electric Fields (PEF) on Accumulation of Magnesium in Lactobacillus rhamnosus B 442 Cells. J Membr Biol 2017; 250:565-572. [PMID: 28871398 PMCID: PMC5613034 DOI: 10.1007/s00232-017-9986-6] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2017] [Accepted: 08/30/2017] [Indexed: 01/13/2023]
Abstract
The aim of this study was to determine the effect of pulsed electric fields (PEF) on accumulation of magnesium ions in Lactobacillus rhamnosus B 442 cells. Under optimized conditions, this is, on 15 min exposure of the 20 h grown culture to PEF of the 2.0 kV/cm and 20 µs pulse width at concentration 400 μg Mg2+/mL medium, accumulation of magnesium in the biomass reached maximum 4.28 mg/g d.m. Optimization of PEF parameters caused an increase of magnesium concentration in the cells by 220% in comparison to the control not treated with PEF. Bacterial cell biomass enriched with Mg2+ may be an alternative for pharmacological supplementation applied in deficiency of this cation.
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Affiliation(s)
- Małgorzata Góral
- Department of Analysis and Food Quality Assessment, Faculty of Food Science and Biotechnology, University of Life Sciences, Skromna Street 8, 20-704, Lublin, Poland.
| | - Urszula Pankiewicz
- Department of Analysis and Food Quality Assessment, Faculty of Food Science and Biotechnology, University of Life Sciences, Skromna Street 8, 20-704, Lublin, Poland
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Radulović Z, Miočinović J, Mirković N, Mirković M, Paunović D, Ivanović M, Seratlić S. Survival of spray-dried and free-cells of potential probiotic Lactobacillus plantarum 564 in soft goat cheese. Anim Sci J 2017. [PMID: 28631434 DOI: 10.1111/asj.12802] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
A high viability of probiotics in food product, with a living cells threshold of 107 /cfu/g (colony-forming units/g) is a challenge to achieve in food production. Spray drying is an efficient and economic industrial method for probiotic bacterial preservation and its application in food products. In this study, the survival of free and spray-dried cells of potential probiotic strain Lactobacillus plantarum 564 after production and during 8 weeks of storage of soft acid coagulated goat cheese was investigated, as well as compositional and sensory quality of cheese. Total bacterial count of spray-dried Lb. plantarum 564 cells were maintained at the high level of 8.82 log/cfu/g in cheese after 8 weeks of storage, while free-cell number decreased to 6.9 log/cfu/g. However, the chemical composition, pH values and sensory evaluation between control cheese (C1 sample made with commercial starter culture) and treated cheese samples (C2 and C3, made with the same starter, with the addition of free and spray-dried Lb. plantarum 564 cells, respectively) did not significantly differ. High viability of potential probiotic bacteria and acceptable sensory properties indicate that spray-dried Lb. plantarum 564 strain could be successfully used in the production of soft acid coagulated goat cheeses.
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Affiliation(s)
- Zorica Radulović
- Faculty of Agriculture, University of Belgrade, Belgrade, Serbia
| | | | - Nemanja Mirković
- Faculty of Agriculture, University of Belgrade, Belgrade, Serbia
| | - Milica Mirković
- Faculty of Agriculture, University of Belgrade, Belgrade, Serbia
| | - Dušanka Paunović
- Faculty of Agriculture, University of Belgrade, Belgrade, Serbia
| | - Marina Ivanović
- Faculty of Agriculture, University of Belgrade, Belgrade, Serbia
| | - Sanja Seratlić
- Teagasc Food Research Centre, Moorepark, Fermoy, Co. Cork, Ireland
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Assessment of pulsed electric fields induced cellular damage in Saccharomyces cerevisiae: Change in performance of mitochondria and cellular enzymes. Lebensm Wiss Technol 2014. [DOI: 10.1016/j.lwt.2014.03.009] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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