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Park YJ, Kim SY, Song WJ. Inactivation of Salmonella Typhimurium and Listeria monocytogenes on buckwheat seeds through combination treatment with plasma, vacuum packaging, and hot water. J Appl Microbiol 2023; 134:lxad272. [PMID: 37974046 DOI: 10.1093/jambio/lxad272] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2023] [Revised: 11/12/2023] [Accepted: 11/15/2023] [Indexed: 11/19/2023]
Abstract
AIMS The objectives of this study were to evaluate the effect of combination treatment with cold plasma (CP), vacuum packaging (VP), and hot water (HW) on the inactivation of foodborne pathogens on buckwheat seeds, and determined the germination rates of seeds and the quality of sprouts following combination treatment. METHODS AND RESULTS Buckwheat seeds inoculated with Salmonella Typhimurium and Listeria monocytogenes were treated with CP, HW, CP + HW, VP + HW, or CP + VP + HW. The germination rates of the HW-, CP + HW-, VP + HW-, and CP + VP + HW-treated seeds and the antioxidant activities and rutin contents of the CP + HW- and CP + VP + HW-treated sprouts were determined. HW, CP + HW, and CP + VP + HW were found to reduce the levels of the two pathogens to below the detection limit (1.0 log CFU g-1) at 70°C. However, HW and CP + HW significantly reduced the germination rate of buckwheat seeds. CP + VP + HW did not affect the germination rate of seeds nor the antioxidant activities and rutin content of buckwheat sprouts. CONCLUSIONS These results indicate that CP + VP + HW can be used as a novel control method to reduce foodborne pathogens in seeds without causing quality deterioration.
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Affiliation(s)
- Ye-Jin Park
- Department of Food Science and Biotechnology, Kyonggi University, Suwon, Gyeonggi-do 16227, Republic of Korea
| | - Su-Yeon Kim
- Department of Food Science and Biotechnology, Kyonggi University, Suwon, Gyeonggi-do 16227, Republic of Korea
| | - Won-Jae Song
- Department of Food Science and Biotechnology, Kyonggi University, Suwon, Gyeonggi-do 16227, Republic of Korea
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Assessment Impacts of Ozone on Salmonella Typhimurium and Escherichia coli O157:H7 in Liquid Dairy Waste. APPLIED SCIENCES-BASEL 2022. [DOI: 10.3390/app12136527] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
Liquid dairy manure, which is produced in enormous quantities in flush dairy manure management systems, is commonly used as an alternative to chemical fertilizers. It provides nutrient benefits to crops and soils. While dairy waste is a well-accepted and widely used fertilizer, the presence of indicator organisms and human pathogens in manure may lead to pathogen contamination in crops and soils. This study is focused on the examination of ozone gas-based sterilization. In the past, ozone (O3) has been used for sanitizing various foods and solid surfaces, but the potential of O3 for eliminating human pathogens in liquid dairy waste is not studied yet. Pathogens such as Salmonella Typhimurium and Escherichia coli O157:H7 are reported to be present in liquid dairy manure, and this research evaluated the effects of various levels of ozone on the survival of these two pathogens. We designed a continuous type O3 treatment system that has four major components: (1) ozone generator using oxygen; (2) ozone concentration control by mixing with pure air; (3) continuous monitoring of ozone concentrations; and (4) ozone experiment chambers. Various levels of ozone (43.26, 87.40, and 132.46 mg·L−1) were produced in the ozone system, and subsequently, ozone was diffused through liquid manure. Liquid manure was exposed to ozone for multiple durations (30, 60, and 120 min). To determine the effectiveness of O3 in eliminating pathogens, time-series samples were collected and analyzed for determining the levels of S. typhimurium and E. coli O157:H7. Preliminary results showed that ozone concentrations of 132.46 mg/L, and exposure time of 120 min resulted in the reduced levels of E. coli and Salmonella. Low levels of ozone and limited exposure time were found to be less effective in pathogen removal potentially due to high solid contents. Additional studies carrying out experiments to evaluate the impacts of solids in combination with ozone concentrations will provide further insights into developing full-scale ozone-based treatment systems.
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Salar FJ, Domínguez-Perles R, García-Viguera C, Fernández PS. Ifs and buts of non-thermal processing technologies for plant-based drinks' bioactive compounds. FOOD SCI TECHNOL INT 2022:10820132221094724. [PMID: 35440183 DOI: 10.1177/10820132221094724] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Vegetables and fruits contain a variety of bioactive nutrients and non-nutrients that are associated with health promotion. Consumers currently demand foods with high contents of healthy compounds, as well as preserved natural taste and flavour, minimally processed without using artificial additives. Processing alternatives to be applied on plant-based foodstuffs to obtain beverages are mainly referred to as classical thermal treatments that although are effective treatments to ensure safety and extended shelf-life, also cause undesirable changes in the sensory profiles and phytochemical properties of beverages, thus affecting the overall quality and acceptance by consumers. As a result of these limitations, new non-thermal technologies have been developed for plant-based foods/beverages to enhance the overall quality of these products regarding microbiological safety, sensory traits, and content of bioactive nutrients and non-nutrients during the shelf-life of the product, thus allowing to obtain enhanced health-promoting beverages. Accordingly, the present article attempts to review critically the principal benefits and downsides of the main non-thermal processing alternatives (High hydrostatic pressure, pulsed electric fields, ultraviolet light, and ultrasound) to set up sound comparisons with conventional thermal treatments, providing a vision about their practical application that allows identifying the best choice for the sectoral industry in non-alcoholic fruit and vegetable-based beverages.
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Affiliation(s)
- Francisco J Salar
- Laboratorio de Fitoquímica y Alimentos Saludables (LabFAS), Departamento de Ciencia y Tecnología de Alimentos, CEBAS-CSIC, Campus de Espinardo 25, 30100 Murcia, Spain
| | - Raúl Domínguez-Perles
- Laboratorio de Fitoquímica y Alimentos Saludables (LabFAS), Departamento de Ciencia y Tecnología de Alimentos, CEBAS-CSIC, Campus de Espinardo 25, 30100 Murcia, Spain.,Calidad y Evaluación de Riesgos en Alimentos, Unidad Asociada CSIC -UPCT
| | - Cristina García-Viguera
- Laboratorio de Fitoquímica y Alimentos Saludables (LabFAS), Departamento de Ciencia y Tecnología de Alimentos, CEBAS-CSIC, Campus de Espinardo 25, 30100 Murcia, Spain.,Calidad y Evaluación de Riesgos en Alimentos, Unidad Asociada CSIC -UPCT
| | - Pablo S Fernández
- Department of Ingeniería Agrónomica, Instituto de Biotecnología Vegetal, Universidad Politécnica de Cartagena, Paseo Alfonso XIII 48, 30203 Cartagena, Spain.,Calidad y Evaluación de Riesgos en Alimentos, Unidad Asociada CSIC -UPCT
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4
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Quality Evaluation of Lemon Cordial Stored at Different Times with Microwave Heating (Pasteurization). SUSTAINABILITY 2022. [DOI: 10.3390/su14041953] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
Consumer interest in food quality and safety has shifted over time, as consumers increasingly prefer minimally processed items. As a result, numerous non-thermal approaches have been implemented due to their potential to preserve the nutritional profile of products along with lengthening their storability. Microwaving, a green processing technique, volumetrically heats the product because of the interactions developed between charged ions, polar water molecules of foodstuff and the incoming electromagnetic waves. The study was mapped out to investigate the effect of microwave exposure time (60, 90 and 120 s) at fixed power (1000 W) and frequency (2450 MHz) on physicochemical properties, phytochemical constituents, antioxidant potential and microbial counts of lemon cordial stored at refrigerated temperature (4 ± 2 °C). The mentioned parameters were analyzed after an interval of 30–90 days. Statistical findings illustrated a highly significant (p ≤ 0.01) impact of microwave treatment and storage on titratable acidity, pH, total soluble solids, total phenolic contents, total flavonoids contents, antioxidant potential and total plate count. Sample microwaved for 120 s showed the highest pH values (2.45 ± 0.050), total soluble solids (56.68 ± 2.612 °B) and antioxidant activity (1212.03 ± 716.5 µg—equivalent of ascorbic acid per 100 mL of cordial); meanwhile, it exhibited the lowest total plate counts (1.75 ± 0.144 Log 10 CFU/mL). Therefore, microwaving can be suggested as a suitable alternate to traditional pasteurization techniques as well as to chemical preservatives.
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5
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Ohmic Heating in the Food Industry: Developments in Concepts and Applications during 2013–2020. APPLIED SCIENCES-BASEL 2021. [DOI: 10.3390/app11062507] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Various technologies have been evaluated as alternatives to conventional heating for pasteurization and sterilization of foods. Ohmic heating of food products, achieved by passage of an alternating current through food, has emerged as a potential technology with comparable performance and several advantages. Ohmic heating works faster and consumes less energy compared to conventional heating. Key characteristics of ohmic heating are homogeneity of heating, shorter heating time, low energy consumption, and improved product quality and food safety. Energy consumption of ohmic heating was measured as 4.6–5.3 times lower than traditional heating. Many food processes, including pasteurization, roasting, boiling, cooking, drying, sterilization, peeling, microbiological inhibition, and recovery of polyphenol and antioxidants have employed ohmic heating. Herein, we review the theoretical basis for ohmic treatment of food and the interaction of ohmic technology with food ingredients. Recent work in the last seven years on the effect of ohmic heating on food sensory properties, bioactive compound levels, microbial inactivation, and physico-chemical changes are summarized as a convenient reference for researchers and food scientists and engineers.
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Chang R, Pandey P, Li Y, Venkitasamy C, Chen Z, Gallardo R, Weimer B, Jay-Russell M, Weimer B. Assessment of gaseous ozone treatment on Salmonella Typhimurium and Escherichia coli O157:H7 reductions in poultry litter. WASTE MANAGEMENT (NEW YORK, N.Y.) 2020; 117:42-47. [PMID: 32805600 DOI: 10.1016/j.wasman.2020.07.039] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/30/2020] [Revised: 07/10/2020] [Accepted: 07/23/2020] [Indexed: 05/03/2023]
Abstract
Poultry litter is used as soil amendment or organic fertilizer. While poultry litter is enriched with organic matter suitable for land, the presence of pathogens such as Salmonella in poultry litter is a concern. To investigate the effect of gaseous ozone on pathogen reductions in poultry litter, this study conducted a series of experiments that involved understanding of Salmonella Typhimurium and Escherichia coli O157:H7 inactivation at various doses of Ozone (O3) in wet and dry poultry litter conditions. Previously, ozone treatment has been shown to disinfect the surface of foods and plant materials including fruits, juices, and wastewater, however, additional research are needed to better understand the impacts of ozone on treatment of soil amendments. Sanitizing methods capable of eliminating pathogens of soil amendments are crucial to mitigate disease outbreaks related with litter/manure-based fertilizers. In this study, a bench scale continuous ozone treatment system was designed to produce O3 gas, with a range O3 concentrations (7.15-132.46 mg·L-1), monitor ozone concentrations continuously, and control the ozone exposure time (15 to 90 mins) to understand the effectiveness of O3 in eliminating S. Typhimurium and E. coli O157:H7 in poultry litter. Results showed that 7.15 mg·L-1 did not reduce the counts of S. Typhimurium until exposure to O3 for 90 min. The O3 concentrations of 43.26 ~ 132.46 mg·L-1 exposure reduced the bacterial counts. Furthermore, the moisture content of poultry litter was found to be an influencing factor for pathogen reduction. The pathogen reduction rates were reduced when the moisture content was increased. At higher moisture content, high concentrations of O3 (132.46 mg·L-1) were needed for pathogen reductions. The moisture content of 30% or lower was found to be more effective for controlling pathogen levels in poultry litter. Our study demonstrates that gaseous O3 treatment could be used as an additional decontamination technique to ensure the certain degree of microbiological safety of poultry litter based soil amendment.
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Affiliation(s)
- Ruixue Chang
- Department of Population Health and Reproduction, Veterinary Medicine School, University of California, Davis, CA 95616, USA; Department of Environmental Sciences and Technology, College of Resources and Environmental Sciences, China Agricultural University, Beijing 100193, China
| | - Pramod Pandey
- Department of Population Health and Reproduction, Veterinary Medicine School, University of California, Davis, CA 95616, USA.
| | - Yanming Li
- Department of Environmental Sciences and Technology, College of Resources and Environmental Sciences, China Agricultural University, Beijing 100193, China
| | - Chandrasekar Venkitasamy
- Department of Population Health and Reproduction, Veterinary Medicine School, University of California, Davis, CA 95616, USA; Food Science and Human Nutrition, Iowa State University, Ames, IA 50011, USA
| | - Zhao Chen
- Department of Population Health and Reproduction, Veterinary Medicine School, University of California, Davis, CA 95616, USA
| | - Rodrigo Gallardo
- Department of Population Health and Reproduction, Veterinary Medicine School, University of California, Davis, CA 95616, USA
| | - Bart Weimer
- Department of Population Health and Reproduction, Veterinary Medicine School, University of California, Davis, CA 95616, USA
| | - Michele Jay-Russell
- Western Center for Food Safety, University of California, Davis, CA 95616, USA
| | - Bart Weimer
- Department of Population Health and Reproduction, Veterinary Medicine School, University of California, Davis, CA 95616, USA
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Kang JW, Kim WJ, Kang DH. Synergistic effect of 222-nm krypton-chlorine excilamp and mild heating combined treatment on inactivation of Escherichia coli O157:H7 and Salmonella Typhimurium in apple juice. Int J Food Microbiol 2020; 329:108665. [PMID: 32497789 DOI: 10.1016/j.ijfoodmicro.2020.108665] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2019] [Revised: 03/20/2020] [Accepted: 05/16/2020] [Indexed: 10/24/2022]
Abstract
Simultaneous treatment with 222-nm KrCl excilamp and mild heating (EX-MH) at 45, 50 and 55 °C showed synergistic bactericidal effects on non-acid and acid adapted cells of Escherichia coli O157:H7 and Salmonella Typhimurium in apple juice. In particular, acid-adapted pathogens exhibited increased resistance to EX-MH compared to pathogenic bacteria that were not acid-adapted. Also, elucidation of the synergistic bactericidal mechanism of EX-MH was performed through several assays and this mechanism was described as follows: (i) when KrCl excilamp (EX) and mild heating (MH) are applied simultaneously, MH reversibly inactivates the antioxidant enzyme, superoxide dismutase (SOD), thereby increasing accumulation of reactive oxygen species (ROS) generated by EX and thus inducing synergistic ROS generation, (ii) ROS production induces lipid peroxidation occurrence in the cell membrane, (iii) this lipid peroxidation occurrence in the cell membrane induces synergistic destruction of cell membrane, resulting in synergistic cell death. While EX-MH of 45, 50, or 55 °C reduced E. coli O157:H7 (the pathogen most resistant to EX-MH) in apple juice by 5-log, the qualities such as color (L*, a*, and b*), total phenolic compounds (TPC), and DPPH free radical scavenging activity of apple juice did not change significantly (P > 0.05). This study not only suggests the applicability of EX-MH to the apple juice industry, but also can be used as baseline data for future relevant research.
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Affiliation(s)
- Jun-Won Kang
- Department of Food and Animal Biotechnology, Department of Agricultural Biotechnology, Center for Food and Bioconvergence, Research Institute for Agricultural and Life Sciences, Seoul National University, Seoul 08826, Republic of Korea
| | - Woo-Ju Kim
- Department of Food Science and Technology, The Ohio State University, 2015 Fyffe road, Columbus, OH 43210, USA
| | - Dong-Hyun Kang
- Department of Food and Animal Biotechnology, Department of Agricultural Biotechnology, Center for Food and Bioconvergence, Research Institute for Agricultural and Life Sciences, Seoul National University, Seoul 08826, Republic of Korea; Institutes of Green Bio Science & Technology, Seoul National University, Pyeongchang-gun, Gangwon-do 25354, Republic of Korea.
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Kang JW, Hong HN, Kang DH. Application of a Krypton-Chlorine Excilamp To Control Alicyclobacillus acidoterrestris Spores in Apple Juice and Identification of Its Sporicidal Mechanism. Appl Environ Microbiol 2020; 86:e00159-20. [PMID: 32220842 PMCID: PMC7237776 DOI: 10.1128/aem.00159-20] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2020] [Accepted: 03/23/2020] [Indexed: 12/18/2022] Open
Abstract
The aim of this study was to investigate the sporicidal effect of a krypton-chlorine (KrCl) excilamp against Alicyclobacillus acidoterrestris spores and to compare its inactivation mechanism to that of a conventional UV lamp containing mercury (Hg). The inactivation effect of the KrCl excilamp was not significantly different from that of the Hg UV lamp for A. acidoterrestris spores in apple juice despite the 222-nm wavelength of the KrCl excilamp having a higher absorption coefficient in apple juice than the 254-nm wavelength of the Hg UV lamp; this is because KrCl excilamps have a fundamentally greater inactivation effect than Hg UV lamps, which is confirmed under ideal conditions (phosphate-buffered saline). The inactivation mechanism analysis revealed that the DNA damage induced by the KrCl excilamp was not significantly different (P > 0.05) from that induced by the Hg UV lamp, while the KrCl excilamp caused significantly higher (P < 0.05) lipid peroxidation incidence and permeability change in the inner membrane of A. acidoterrestris spores than did the Hg UV lamp. Meanwhile, the KrCl excilamp did not generate significant (P > 0.05) intracellular reactive oxygen species, indicating that the KrCl excilamp causes damage only through the direct absorption of UV light. In addition, after KrCl excilamp treatment with a dose of 2,011 mJ/cm2 to reduce A. acidoterrestris spores in apple juice by 5 logs, there were no significant (P > 0.05) changes in quality parameters such as color (L*, a*, and b*), total phenolic compounds, and DPPH (2,2-diphenyl-1-picrylhydrazyl) free radical scavenging activity.IMPORTANCEAlicyclobacillus acidoterrestris spores, which have high resistance to thermal treatment and can germinate even at low pH, are very troublesome in the juice industry. UV technology, a nonthermal treatment, can be an excellent means to control heat-resistant A. acidoterrestris spores in place of thermal treatment. However, the traditionally applied UV sources are lamps that contain mercury (Hg), which is harmful to humans and the environment; thus, there is a need to apply novel UV technology without the use of Hg. In response to this issue, excilamps, an Hg-free UV source, have been actively studied. However, no studies have been conducted applying this technique to control A. acidoterrestris spores. Therefore, the results of this study, which applied a KrCl excilamp for the control of A. acidoterrestris spores and elucidated the inactivation principle, are expected to be utilized as important basic data for application to actual industry or conducting further studies.
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Affiliation(s)
- Jun-Won Kang
- Department of Food and Animal Biotechnology, Department of Agricultural Biotechnology, Center for Food and Bioconvergence, and Research Institute for Agricultural and Life Sciences, Seoul National University, Seoul, Republic of Korea
| | - Hak-Nyeong Hong
- Department of Food and Animal Biotechnology, Department of Agricultural Biotechnology, Center for Food and Bioconvergence, and Research Institute for Agricultural and Life Sciences, Seoul National University, Seoul, Republic of Korea
| | - Dong-Hyun Kang
- Department of Food and Animal Biotechnology, Department of Agricultural Biotechnology, Center for Food and Bioconvergence, and Research Institute for Agricultural and Life Sciences, Seoul National University, Seoul, Republic of Korea
- Institutes of Green Bio Science and Technology, Seoul National University, Pyeongchang-gun, Gangwon-do, Republic of Korea
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Kim S, Park J, Park H, Hong H, Kang D. Combined ohmic heating and krypton‐chlorine excilamp treatment for the inactivation of
Listeria monocytogenes
,
Salmonella
Typhimurium, and
Escherichia coli
O157:H7 in apple juice. J Food Saf 2020. [DOI: 10.1111/jfs.12706] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Affiliation(s)
- Sang‐Soon Kim
- Department of Food EngineeringDankook University Chungnam Korea
| | - Jihun Park
- Department of Agricultural Biotechnology, Center for Food and Bioconvergence, and Research Institute for Agricultural and Life SciencesSeoul National University Seoul Korea
| | - Heesoo Park
- Department of Agricultural Biotechnology, Center for Food and Bioconvergence, and Research Institute for Agricultural and Life SciencesSeoul National University Seoul Korea
| | - Haknyeong Hong
- Department of Agricultural Biotechnology, Center for Food and Bioconvergence, and Research Institute for Agricultural and Life SciencesSeoul National University Seoul Korea
| | - Dong‐Hyun Kang
- Department of Agricultural Biotechnology, Center for Food and Bioconvergence, and Research Institute for Agricultural and Life SciencesSeoul National University Seoul Korea
- Institutes of Green Bio Science & TechnologySeoul National University Pyeongchang‐gun Gangwon‐do Korea
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Alves Filho E, Rodrigues T, Fernandes F, de Brito E, Cullen P, Frias J, Bourke P, Cavalcante R, Almeida F, Rodrigues S. An untargeted chemometric evaluation of plasma and ozone processing effect on volatile compounds in orange juice. INNOV FOOD SCI EMERG 2019. [DOI: 10.1016/j.ifset.2017.10.001] [Citation(s) in RCA: 29] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Sattar S, Ahmad T, Nisa M, Imran M, Holmes M, Maycock J, Nadeem M, Khan MK. Microwave processing impact on physicochemical and bioactive attributes of optimized peach functional beverage. J FOOD PROCESS PRES 2019. [DOI: 10.1111/jfpp.13952] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Affiliation(s)
- Saira Sattar
- Faculty of Life Sciences, Institute of Home and Food Sciences Government College University Faisalabad Pakistan
- School of Food Science and Nutrition University of Leeds Leeds UK
| | - Tanvir Ahmad
- Faculty of Physical Sciences, Department of Statistics Government College University Faisalabad Pakistan
| | - Mahr‐un Nisa
- Faculty of Life Sciences, Institute of Home and Food Sciences Government College University Faisalabad Pakistan
| | - Muhammad Imran
- Faculty of Life Sciences, Institute of Home and Food Sciences Government College University Faisalabad Pakistan
| | - Melvin Holmes
- School of Food Science and Nutrition University of Leeds Leeds UK
| | - Joanne Maycock
- School of Food Science and Nutrition University of Leeds Leeds UK
| | - Muhammad Nadeem
- Department of Dairy Technology University of Veterinary and Animal Sciences Lahore Pakistan
| | - Muhammad Kamran Khan
- Faculty of Life Sciences, Institute of Home and Food Sciences Government College University Faisalabad Pakistan
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Kang JW, Kang DH. Increased Resistance of Salmonella enterica Serovar Typhimurium and Escherichia coli O157:H7 to 222-Nanometer Krypton-Chlorine Excilamp Treatment by Acid Adaptation. Appl Environ Microbiol 2019; 85:e02221-18. [PMID: 30610077 PMCID: PMC6414383 DOI: 10.1128/aem.02221-18] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2018] [Accepted: 12/24/2018] [Indexed: 11/20/2022] Open
Abstract
In this study, we examined the change in resistance of Salmonella enterica serovar Typhimurium and Escherichia coli O157:H7 to 222-nm krypton-chlorine (KrCl) excilamp treatment as influenced by acid adaptation and identified a mechanism of resistance change. In addition, we measured changes in apple juice quality indicators, such as color, total phenols, and 2,2-diphenyl-1-picrylhydrazyl (DPPH) free radical scavenging activity, during treatment. Non-acid-adapted and acid-adapted pathogens were induced by growing the cells in tryptic soy broth without dextrose (TSB w/o D) at pH 7.3 and in TSB w/o D at pH 5.0 (adjusted with HCl), respectively. For the KrCl excilamp treatment, acid-adapted pathogens exhibited significantly (P < 0.05) higher D5d values, which indicate dosages required to achieve a 5-log reduction, than those for non-acid-adapted pathogens in both commercially clarified apple juice and phosphate-buffered saline (PBS), and the pathogens in the juice showed significantly (P < 0.05) higher D5d values than those for pathogens in PBS because of the UV-absorbing characteristics of apple juice. Through mechanism identification, it was found that the generation of lipid peroxidation in the cell membrane, inducing cell membrane destruction, was significantly (P < 0.05) lower in acid-adapted cells than in non-acid-adapted cells for the same amount of reactive oxygen species (ROS) generated at the same dose because the ratio of unsaturated to saturated fatty acids (USFA/SFA) in the cell membrane was significantly (P < 0.05) decreased as a result of acid adaptation. Treated apple juice showed no significant (P > 0.05) difference in quality indicators compared to those of untreated controls during treatment at 1,773 mJ/cm2IMPORTANCE There is a need for novel, mercury-free UV lamp technology to replace germicidal lamps containing harmful mercury, which are routinely utilized for UV pasteurization of apple juice. In addition, consideration of the changes in response to antimicrobial treatments that may occur when pathogens are adapted to the acid in an apple juice matrix is critical to the practical application of this technology. Based on this, an investigation using 222-nm KrCl excilamp technology, an attractive alternative to mercury lamps, was conducted. Our study demonstrated increased resistance to 222-nm KrCl excilamp treatment as pathogens adapted to acids, and this was due to changes in reactivity to ROS with changes in the fatty acid composition of the cell membrane. Despite increased resistance, the 222-nm KrCl excilamp achieved pathogen reductions of 5 log or more at laboratory scale without affecting apple juice quality. These results provide valuable baseline data for application of 222-nm KrCl excilamps in the apple juice industry.
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Affiliation(s)
- Jun-Won Kang
- Department of Agricultural Biotechnology, Center for Food and Bioconvergence, Research Institute for Agricultural and Life Sciences, Seoul National University, Seoul, Republic of Korea
- Institutes of Green-bio Science & Technology, Seoul National University, Pyeongchang-gun, Gangwon-do, Republic of Korea
| | - Dong-Hyun Kang
- Department of Agricultural Biotechnology, Center for Food and Bioconvergence, Research Institute for Agricultural and Life Sciences, Seoul National University, Seoul, Republic of Korea
- Institutes of Green-bio Science & Technology, Seoul National University, Pyeongchang-gun, Gangwon-do, Republic of Korea
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13
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Kwon SA, Song WJ, Kang DH. Combination effect of saturated or superheated steam and lactic acid on the inactivation of Escherichia coli O157:H7, Salmonella Typhimurium and Listeria monocytogenes on cantaloupe surfaces. Food Microbiol 2019; 82:342-348. [PMID: 31027792 DOI: 10.1016/j.fm.2019.03.012] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2018] [Revised: 03/07/2019] [Accepted: 03/08/2019] [Indexed: 12/14/2022]
Abstract
The purpose of this study was to evaluate the effectiveness of the combination treatment of lactic acid immersion and saturated or superheated steam (SHS) on inactivation of foodborne pathogens on cantaloupes. Saturated steam (SS) treatments were performed at 100 °C, while SHS treatments were delivered at either 150 or 200 °C. Escherichia coli O157:H7, Salmonella Typhimurium and Listeria monocytogenes-inoculated cantaloupes were exposed to 2% lactic acid or sterile distilled water for 1 min followed by a maximum of 20 s of SS or SHS. Populations of each of the three pathogens on cantaloupes were reduced to under the detection limit (1.0 log CFU/cm2) after the combination treatment of 2% lactic acid and 200 °C steam for 20 s. To compare the effect of the lactic acid treatment method, we conducted spray application with 2% lactic acid combined with SS or SHS treatment; however, no significant log reduction differences were found between immersion and spraying techniques. After combination treatment of cantaloupes for 20 s, color and maximum load values (a characteristic of texture) were not significantly different from those of untreated controls. The results of this study suggest that the combination treatment of lactic acid and SHS can be used as an antimicrobial intervention for cantaloupes without inducing quality deterioration.
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Affiliation(s)
- Sun-Ah Kwon
- Department of Food and Animal Biotechnology, Department of Agricultural Biotechnology, Center for Food and Bioconvergence, and Research Institute for Agricultural and Life Sciences, Seoul National University, Seoul, 08826, Republic of Korea; Institutes of Green Bio Science & Technology, Seoul National University, Pyeongchang-gun, Gangwon-do, 25354, Republic of Korea
| | - Won-Jae Song
- Department of Food and Animal Biotechnology, Department of Agricultural Biotechnology, Center for Food and Bioconvergence, and Research Institute for Agricultural and Life Sciences, Seoul National University, Seoul, 08826, Republic of Korea; Institutes of Green Bio Science & Technology, Seoul National University, Pyeongchang-gun, Gangwon-do, 25354, Republic of Korea
| | - Dong-Hyun Kang
- Department of Food and Animal Biotechnology, Department of Agricultural Biotechnology, Center for Food and Bioconvergence, and Research Institute for Agricultural and Life Sciences, Seoul National University, Seoul, 08826, Republic of Korea; Institutes of Green Bio Science & Technology, Seoul National University, Pyeongchang-gun, Gangwon-do, 25354, Republic of Korea.
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Bevilacqua A, Petruzzi L, Perricone M, Speranza B, Campaniello D, Sinigaglia M, Corbo MR. Nonthermal Technologies for Fruit and Vegetable Juices and Beverages: Overview and Advances. Compr Rev Food Sci Food Saf 2017; 17:2-62. [DOI: 10.1111/1541-4337.12299] [Citation(s) in RCA: 103] [Impact Index Per Article: 14.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2017] [Revised: 08/04/2017] [Accepted: 08/06/2017] [Indexed: 01/04/2023]
Affiliation(s)
- Antonio Bevilacqua
- Dept. of the Science of Agriculture, Food and Environment; Univ. of Foggia; Foggia Italy
| | - Leonardo Petruzzi
- Dept. of the Science of Agriculture, Food and Environment; Univ. of Foggia; Foggia Italy
| | - Marianne Perricone
- Dept. of the Science of Agriculture, Food and Environment; Univ. of Foggia; Foggia Italy
| | - Barbara Speranza
- Dept. of the Science of Agriculture, Food and Environment; Univ. of Foggia; Foggia Italy
| | - Daniela Campaniello
- Dept. of the Science of Agriculture, Food and Environment; Univ. of Foggia; Foggia Italy
| | - Milena Sinigaglia
- Dept. of the Science of Agriculture, Food and Environment; Univ. of Foggia; Foggia Italy
| | - Maria Rosaria Corbo
- Dept. of the Science of Agriculture, Food and Environment; Univ. of Foggia; Foggia Italy
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15
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Petruzzi L, Campaniello D, Speranza B, Corbo MR, Sinigaglia M, Bevilacqua A. Thermal Treatments for Fruit and Vegetable Juices and Beverages: A Literature Overview. Compr Rev Food Sci Food Saf 2017; 16:668-691. [DOI: 10.1111/1541-4337.12270] [Citation(s) in RCA: 111] [Impact Index Per Article: 15.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2017] [Revised: 04/03/2017] [Accepted: 04/25/2017] [Indexed: 01/25/2023]
Affiliation(s)
- Leonardo Petruzzi
- Dept. of the Science of Agriculture, Food and Environment; Univ. of Foggia; Foggia Italy
| | - Daniela Campaniello
- Dept. of the Science of Agriculture, Food and Environment; Univ. of Foggia; Foggia Italy
| | - Barbara Speranza
- Dept. of the Science of Agriculture, Food and Environment; Univ. of Foggia; Foggia Italy
| | - Maria Rosaria Corbo
- Dept. of the Science of Agriculture, Food and Environment; Univ. of Foggia; Foggia Italy
| | - Milena Sinigaglia
- Dept. of the Science of Agriculture, Food and Environment; Univ. of Foggia; Foggia Italy
| | - Antonio Bevilacqua
- Dept. of the Science of Agriculture, Food and Environment; Univ. of Foggia; Foggia Italy
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16
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Kim SS, Kang DH. Synergistic effect of carvacrol and ohmic heating for inactivation of E. coli O157:H7, S . Typhimurium, L. monocytogenes , and MS-2 bacteriophage in salsa. Food Control 2017. [DOI: 10.1016/j.foodcont.2016.08.022] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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17
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Song WJ, Shin JY, Ryu S, Kang DH. Inactivation of Escherichia coli O157:H7, Salmonella Typhimurium and Listeria monocytogenes in apple juice at different pH levels by gaseous ozone treatment. J Appl Microbiol 2015; 119:465-74. [PMID: 26033289 DOI: 10.1111/jam.12861] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2014] [Revised: 04/06/2015] [Accepted: 05/20/2015] [Indexed: 11/30/2022]
Abstract
AIMS We investigated the effect of ozone treatment of apple juice at different pH levels for inactivation of Escherichia coli O157:H7, Salmonella Typhimurium and Listeria monocytogenes. METHODS AND RESULTS Apple juice (pH 3.0, 4.0 and 5.0) inoculated with the three pathogens were treated with gaseous ozone (3.0 l min(-1) flow rate and 2.0-3.0 g m(-3) ) for up to 4 min. Ozone treatment (4 min) of pH 3.0 apple juice resulted in >5.36 log CFU ml(-1) reduction of E. coli O157:H7. Ozone treatment of pH 4.0 and 5.0 apple juice for 4 min reduced this pathogen by 5.12 log CFU ml(-1) and 1.86 log CFU ml(-1) respectively. The combination of low pH and ozone showed a great antimicrobial effect in apple juice. Salm. Typhimurium and L. monocytogenes showed a reduction trend similar to E. coli O157:H7. There were no significant changes of colour values when apple juice was treated with ozone, except for b values. Among all ozone treated samples, the browning index was lower than that of nontreated samples and there were no significant differences in total phenolic contents. CONCLUSIONS In conclusion, ozone treatment of low pH apple juice was significantly effective in inactivation of foodborne pathogens while maintaining acceptable apple juice quality. SIGNIFICANCE AND IMPACT OF THE STUDY The antimicrobial effect of ozone treatment on foodborne pathogens in apple juice can be reinforced by lowering the pH of apple juice.
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Affiliation(s)
- W-J Song
- Department of Food and Animal Biotechnology, Department of Agricultural Biotechnology, Center for Food and Bioconvergence, and Research Institute of Agriculture and Life Sciences, Seoul National University, Seoul, Korea.,Institutes of Green Bio Science & Technology, Seoul National University, Pyeongchang-gun, Korea
| | - J-Y Shin
- Department of Food and Animal Biotechnology, Department of Agricultural Biotechnology, Center for Food and Bioconvergence, and Research Institute of Agriculture and Life Sciences, Seoul National University, Seoul, Korea.,Institutes of Green Bio Science & Technology, Seoul National University, Pyeongchang-gun, Korea
| | - S Ryu
- Department of Food and Animal Biotechnology, Department of Agricultural Biotechnology, Center for Food and Bioconvergence, and Research Institute of Agriculture and Life Sciences, Seoul National University, Seoul, Korea.,Institutes of Green Bio Science & Technology, Seoul National University, Pyeongchang-gun, Korea
| | - D-H Kang
- Department of Food and Animal Biotechnology, Department of Agricultural Biotechnology, Center for Food and Bioconvergence, and Research Institute of Agriculture and Life Sciences, Seoul National University, Seoul, Korea.,Institutes of Green Bio Science & Technology, Seoul National University, Pyeongchang-gun, Korea
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