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Gutiérrez-Pacheco MM, Torres-Moreno H, Flores-Lopez ML, Velázquez Guadarrama N, Ayala-Zavala JF, Ortega-Ramírez LA, López-Romero JC. Mechanisms and Applications of Citral's Antimicrobial Properties in Food Preservation and Pharmaceuticals Formulations. Antibiotics (Basel) 2023; 12:1608. [PMID: 37998810 PMCID: PMC10668791 DOI: 10.3390/antibiotics12111608] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2023] [Revised: 11/01/2023] [Accepted: 11/04/2023] [Indexed: 11/25/2023] Open
Abstract
Citral is a monoterpene constituted by two isomers known as neral and geranial. It is present in different plant sources and recognized as safe (GRAS) by the Food and Drug Administration (FDA). In recent years, investigations have demonstrated that this compound exhibited several biological activities, such as antibacterial, antifungal, antibiofilm, antiparasitic, antiproliferative, anti-inflammatory, and antioxidant properties, by in vitro and in vivo assays. Additionally, when incorporated into different food matrices, citral can reduce the microbial load of pathogenic microorganisms and extend the shelf life. This compound has acceptable drug-likeness properties and does not present any violations of Lipinski's rules, which could be used for drug development. The above shows that citral could be a compound of interest for developing food additives to extend the shelf life of animal and vegetable origin foods and develop pharmaceutical products.
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Affiliation(s)
| | - Heriberto Torres-Moreno
- Departamento de Ciencias Químico-Biológicas y Agropecuarias, Universidad de Sonora, H. Caborca 83600, Sonora, Mexico;
| | - María Liliana Flores-Lopez
- Centro de Investigación e Innovación Científica y Tecnológica, Universidad Autónoma de Coahuila, Saltillo 25070, Coahuila, Mexico;
| | - Norma Velázquez Guadarrama
- Laboratorio de Investigación en Enfermedades Infecciosas, Hospital Infantil de México Federico Gómez, Mexico City 06720, Mexico;
| | - J. Fernando Ayala-Zavala
- Coordinación de Tecnología de Alimentos de Origen Vegetal, Centro de Investigación en Alimentación y Desarrollo, A. C. Carretera Gustavo Astiazarán Rosas No. 46, Colonia la Victoria, Hermosillo 83304, Sonora, Mexico;
| | - Luis Alberto Ortega-Ramírez
- Departamento de Ciencias de la Salud, Universidad Estatal de Sonora, San Luis Río Colorado 83430, Sonora, Mexico;
| | - Julio César López-Romero
- Departamento de Ciencias Químico-Biológicas y Agropecuarias, Universidad de Sonora, H. Caborca 83600, Sonora, Mexico;
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2
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Banerjee T, Panchal N, Sutton C, Elliott R, Patel T, Kajal K, Arogunyo E, Koti N, Santra S. Tunable Magneto-Plasmonic Nanosensor for Sensitive Detection of Foodborne Pathogens. BIOSENSORS 2023; 13:109. [PMID: 36671944 PMCID: PMC9856065 DOI: 10.3390/bios13010109] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/11/2022] [Revised: 01/02/2023] [Accepted: 01/04/2023] [Indexed: 06/17/2023]
Abstract
Frequent outbreaks of food-borne pathogens, particularly E. coli O157:H7, continue to impact human health and the agricultural economy tremendously. The required cell count for this pathogenic strain of E. coli O157:H7 is relatively low and hence it is vital to detect at low colony forming unit (CFU) counts. Available detection methods, though sensitive, fall short in terms of timeliness and often require extensive sample processing. To overcome these limitations, we propose a novel magneto-plasmonic nanosensor (MPnS) by integrating surface plasmon resonance (SPR) properties with spin-spin magnetic relaxation (T2 MR) technology. We engineered MPnS by encapsulating several gold nanoparticles (GNPs) within the polymer-coating of iron oxide nanoparticles (IONPs). First, the polyacrylic acid (PAA)-coated IONPs were synthesized using a solvent precipitation method, then gold chloride solution was used to synthesize GNPs and encapsulate them within the PAA-coatings of IONPs in one step. A magnetic separation technique was used to purify the MPnS and the presence of GNPs within IONPs was characterized using transmission electron microscopy (TEM), energy dispersive x-ray spectroscopy (EDS), and other spectroscopic methods. The synthesized MPnS exhibits MR relaxation properties while possessing amplified optical properties than conventional GNPs. This allows for rapid and ultrasensitive detection of E. coli O157:H7 by SPR, T2 MR, and colorimetric readout. Experiments conducted in simple buffer and in milk as a complex media demonstrated that our MPnS-based assay could detect as low as 10 CFUs of this pathogenic strain of E. coli O157:H7 in minutes with no cross-reactivity. Overall, the formulated MPnS is robust and holds great potential for the ultrasensitive detection of E. coli O157:H7 in a simple and timely fashion. Moreover, this platform is highly customizable and can be used for the detection of other foodborne pathogens.
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Affiliation(s)
- Tuhina Banerjee
- Department of Chemistry and Biochemistry, College of Natural and Applied Sciences, Missouri State University, 901 S. National Avenue, Springfield, MO 65897, USA
| | - Nilamben Panchal
- Department of Chemistry, College and Arts and Sciences, Pittsburg State University, 1701 S. Broadway Street, Pittsburg, KS 66762, USA
| | - Carissa Sutton
- Department of Chemistry and Biochemistry, College of Natural and Applied Sciences, Missouri State University, 901 S. National Avenue, Springfield, MO 65897, USA
| | - Rebekah Elliott
- Department of Chemistry, College and Arts and Sciences, Pittsburg State University, 1701 S. Broadway Street, Pittsburg, KS 66762, USA
| | - Truptiben Patel
- Department of Chemistry, College and Arts and Sciences, Pittsburg State University, 1701 S. Broadway Street, Pittsburg, KS 66762, USA
| | - Kajal Kajal
- Department of Chemistry, College and Arts and Sciences, Pittsburg State University, 1701 S. Broadway Street, Pittsburg, KS 66762, USA
| | - Eniola Arogunyo
- Department of Chemistry, College and Arts and Sciences, Pittsburg State University, 1701 S. Broadway Street, Pittsburg, KS 66762, USA
| | - Neelima Koti
- Department of Chemistry, College and Arts and Sciences, Pittsburg State University, 1701 S. Broadway Street, Pittsburg, KS 66762, USA
| | - Santimukul Santra
- Department of Chemistry, College and Arts and Sciences, Pittsburg State University, 1701 S. Broadway Street, Pittsburg, KS 66762, USA
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3
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López-Romero JC, García-Dávila J, Peña-Ramos EA, González-Ríos H, Valenzuela-Melendres M, Osoria M, Juneja VK. Effect of Citral on the Thermal Inactivation of Escherichia coli O104:H4 in Ground Beef. J Food Prot 2022; 85:1635-1639. [PMID: 35776056 DOI: 10.4315/jfp-22-086] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2022] [Accepted: 06/24/2022] [Indexed: 11/11/2022]
Abstract
ABSTRACT The objective of the present study was to analyze the combined effect of heat treatment (55 to 62.5°C) and citral (0 to 3%) on the heat resistance of Escherichia coli O104:H4 inoculated into ground beef. Inoculated meat packages were immersed in a circulating water bath stabilized at 55, 57.5, 60, or 62.5°C for various times. The surviving microbial cells were counted after culture on tryptic soy agar. A factorial design (4 × 4) was used to analyze the effects and interaction of heat treatment and citral. Heat and citral promoted E. coli O104:H4 thermal inactivation, suggesting a synergistic effect. At 55°C, the incorporation of citral at 1, 2, and 3% decreased D-values (control = 42.75 min) by 85, 89, and 91%, respectively (P < 0.05). A citral concentration-dependent effect (P < 0.05) also was noted at other evaluated temperatures. These findings could be of value to the food industry for designing a safe thermal process for inactivating E. coli O104:H4 in ground beef under similar thermal inactivation conditions. HIGHLIGHTS
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Affiliation(s)
| | - Jimena García-Dávila
- LIPMAN Family Farms, Boulevard Antonio Quiroga 107i, 83174 Hermosillo, Sonora, México
| | - Etna Aida Peña-Ramos
- Coordinación de Tecnología de Alimentos de Origen Animal, Centro de Investigación en Alimentación y Desarrollo, A.C. Carretera Gustavo Enrique Astiazarán Rosas No. 46, 83304 Hermosillo, Sonora, México
| | - Humberto González-Ríos
- Coordinación de Tecnología de Alimentos de Origen Animal, Centro de Investigación en Alimentación y Desarrollo, A.C. Carretera Gustavo Enrique Astiazarán Rosas No. 46, 83304 Hermosillo, Sonora, México
| | - Martín Valenzuela-Melendres
- Coordinación de Tecnología de Alimentos de Origen Animal, Centro de Investigación en Alimentación y Desarrollo, A.C. Carretera Gustavo Enrique Astiazarán Rosas No. 46, 83304 Hermosillo, Sonora, México
| | - Marangeli Osoria
- U.S. Department of Agriculture, Agricultural Research Service, Eastern Regional Research Center, 600 East Mermaid Lane, Wyndmoor, Pennsylvania 19308, USA
| | - Vijay K Juneja
- U.S. Department of Agriculture, Agricultural Research Service, Eastern Regional Research Center, 600 East Mermaid Lane, Wyndmoor, Pennsylvania 19308, USA
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4
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Kaur R, Kaur L, Gupta TB, Singh J, Bronlund J. Multitarget preservation technologies for chemical-free sustainable meat processing. J Food Sci 2022; 87:4312-4328. [PMID: 36120824 PMCID: PMC9825855 DOI: 10.1111/1750-3841.16329] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2022] [Revised: 07/29/2022] [Accepted: 08/19/2022] [Indexed: 01/11/2023]
Abstract
Due to the growing consumer demand for safe and naturally processed meats, the meat industry is seeking novel methods to produce safe-to-consume meat products without affecting their sensory appeal. The green technologies can maintain the sensory and nutritive characteristics and ensure the microbial safety of processed meats and, therefore, can help to reduce the use of chemical preservatives in meat products. The use of chemical additives, especially nitrites in processed meat products, has become controversial because they may form carcinogenic N-nitrosamines, a few of which are suspected as cancer precursors. Thus, the objective of reducing or eliminating nitrite is of great interest to meat researchers and industries. This review, for the first time, discusses the influence of processing technologies such as microwave, irradiation, high-pressure thermal processing (HPTP) and multitarget preservation technology on the quality characteristics of processed meats, with a focus on their sensory quality. These emerging technologies can help in the alleviation of ingoing nitrite or formed nitrosamine contents in meat products. The multitarget preservation technology is an innovative way to enhance the shelf life of meat products through the combined use of different technologies/natural additives. The challenges and opportunities associated with the use of these technologies for processing meat are also reviewed.
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Affiliation(s)
- Ramandeep Kaur
- School of Food and Advanced TechnologyMassey UniversityPalmerston NorthNew Zealand,Riddet InstituteMassey UniversityPalmerston NorthNew Zealand
| | - Lovedeep Kaur
- School of Food and Advanced TechnologyMassey UniversityPalmerston NorthNew Zealand,Riddet InstituteMassey UniversityPalmerston NorthNew Zealand
| | - Tanushree B. Gupta
- AgResearch Ltd, Hopkirk Research InstituteMassey UniversityPalmerston NorthNew Zealand
| | - Jaspreet Singh
- School of Food and Advanced TechnologyMassey UniversityPalmerston NorthNew Zealand,Riddet InstituteMassey UniversityPalmerston NorthNew Zealand
| | - John Bronlund
- School of Food and Advanced TechnologyMassey UniversityPalmerston NorthNew Zealand,Riddet InstituteMassey UniversityPalmerston NorthNew Zealand
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5
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Sheen S, Huang CY, Chuang S. Synergistic effect of high hydrostatic pressure, allyl isothiocyanate, and acetic acid on the inactivation and survival of pathogenic Escherichia coli in ground chicken. J Food Sci 2022; 87:5042-5053. [PMID: 36181370 DOI: 10.1111/1750-3841.16346] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2022] [Revised: 08/17/2022] [Accepted: 09/05/2022] [Indexed: 11/27/2022]
Abstract
Meat and poultry are prone to contamination with foodborne pathogens sourced from the livestock or introduced from the processing environments. In this study, for retention of meat quality while assuring microbial food safety, mild levels of high hydrostatic pressure were hurdled with food-grade additives (i.e., allyl isothiocyanate [AITC] and acetic acid [AA], functioned as antimicrobials) to inactivate pathogenic Escherichia coli in ground chicken. The reductions of Shiga toxin-producing E. coli (STEC) O157:H7 and uropathogenic E. coli (UPEC) were described as a function of high hydrostatic pressure (200-350 MPa), process-holding time (10-25 min), AITC concentration (0.05-0.20% w/w), and AA concentration (0.10--0.30% w/w) using a full factorial design. The antimicrobials had little influence on bacterial inactivation without high pressure. Without the antimicrobials, a high-pressure treatment at 300 MPa and 4°C for 15 min reduced E. coli O157:H7 and UPEC by 1.52 and 2.52 log, respectively. A 5-log reduction was achieved when AITC and AA were combined with high pressure, indicating a synergistic effect. The survivors were further reduced to below the detection limit of 1 log CFU/g after subsequent storage tests at 4 and 10°C for 10 days. The STEC O157:H7 was found slightly more resistant than UPEC in our test matrix. The developed models showed good fits with experimental data (R2 > 0.95 for linear models; Pr > F (<0.0001) for dimensionless nonlinear models); which may help processors find/optimize the processing parameters to achieve target foodborne pathogens reduction for food safety requirement. PRACTICAL APPLICATION: Models were developed to predict the inactivation of pathogenic Escherichia coli in ground chicken by high-pressure processing (HPP) in combination with natural antimicrobial compounds. These models can be used to estimate/determine the HPP operation parameters and antimicrobial usage levels (i.e., allyl isothiocyanate and acetic acid) needed to achieve a specific microbial log reduction within the selected factor ranges. The operation parameters and clean-label ingredients are of interest in the food industry, which may benefit from the application of the models in achieving microbial safety, process optimization, and operation cost reduction.
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Affiliation(s)
- Shiowshuh Sheen
- Eastern Regional Research Center, Agricultural Research Service, U.S. Department of Agriculture, Wyndmoor, Pennsylvania, USA
| | - Chi-Yun Huang
- Institute of Food Science and Technology, National Taiwan University, Taipei, Taiwan
| | - Shihyu Chuang
- Department of Food Science, University of Massachusetts, Amherst, Massachusetts, USA
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6
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High pressure processing of raw meat with essential oils-microbial survival, meat quality, and models: A review. Food Control 2022. [DOI: 10.1016/j.foodcont.2021.108529] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
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7
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Dewi G, Manjankattil S, Peichel C, Jia S, Nair D, Vickers Z, Johnson TJ, Cardona C, Noll S, Kollanoor Johny A. Effect of plant-derived antimicrobials against multidrug-resistant Salmonella Heidelberg in ground Turkey. Poult Sci 2021; 101:101581. [PMID: 34991037 PMCID: PMC8741611 DOI: 10.1016/j.psj.2021.101581] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2021] [Revised: 10/30/2021] [Accepted: 11/02/2021] [Indexed: 11/24/2022] Open
Abstract
Salmonella Heidelberg (SH) is a highly invasive human pathogen for which turkeys can serve as reservoir hosts. Colonization of turkeys with SH may result in potential contamination and is a greater challenge to prevent in comminuted products. Antimicrobial efficacy of 3 GRAS-status plant-derived antimicrobials (PDAs), lemongrass essential oil (LG), citral (CIT), and trans-cinnamaldehyde (TC), against SH in ground turkey, a comminuted product implicated in several outbreaks, was evaluated in this study. Ground turkey samples inoculated with ∼3.50 log10 CFU/g of a three-strain SH cocktail were treated with either LG, CIT, or TC at either 0.5, 1, or 2% (vol/wt). Samples were stored at 4°C, and bacterial enumeration was performed on d 0, 1, 3, and 5. Appropriate controls were included alongside all treatments. Fluorescence microscopy was performed to evaluate the direct impact of the PDAs against SH in vitro. Appearance and aroma difference testing of raw patties was also performed for select treatments with trained sensory panelists. Treatment with 2% TC yielded a 2.5 log10 CFU/g reduction by d 1 and complete reduction by d 5 (P < 0.05). By d 3, 2% CIT and 2% LG resulted in SH reduction of at least 1.7 log10 CFU/g (P < 0.05). Addition of 1% TC resulted in reduction of at least 1.8 log10 CFU/g by d 3 (P < 0.05). Participants could distinguish PDA-treated raw patties by aroma. Most participants (7/11) could not distinguish patties treated with 0.5% TC based on appearance. Microscopic images indicate that all PDAs resulted in disruption of the SH membrane. Results of the present study indicate that the three tested PDAs, LG, CIT, and TC are effective against SH in ground turkey, indicating their potential use as interventions to mitigate Salmonella contamination in comminuted turkey products.
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Affiliation(s)
- Grace Dewi
- Department of Animal Science, University of Minnesota, Saint Paul, MN 55108, USA
| | | | - Claire Peichel
- Department of Animal Science, University of Minnesota, Saint Paul, MN 55108, USA
| | - Shiliang Jia
- College of Food Science and Engineering, Zhejiang University of Technology, Hangzhou, 310014, China
| | - Divek Nair
- Department of Animal Science, University of Minnesota, Saint Paul, MN 55108, USA
| | - Zata Vickers
- Department of Food Science and Nutrition, University of Minnesota, Saint Paul, MN 55108, USA
| | - Timothy J Johnson
- Department of Veterinary and Biomedical Sciences, University of Minnesota, Saint Paul, MN 55108, USA
| | - Carol Cardona
- Department of Veterinary and Biomedical Sciences, University of Minnesota, Saint Paul, MN 55108, USA
| | - Sally Noll
- Department of Animal Science, University of Minnesota, Saint Paul, MN 55108, USA
| | - Anup Kollanoor Johny
- Department of Animal Science, University of Minnesota, Saint Paul, MN 55108, USA.
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8
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Wang L, Kong X, Jiang Y. Recovery of high pressure processing (HPP) induced injured Escherichia coli O157:H7 inhibited by Lactobacillus sakei on vacuum-packed ground beef. FOOD BIOSCI 2021. [DOI: 10.1016/j.fbio.2021.100928] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
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9
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Aganovic K, Hertel C, Vogel RF, Johne R, Schlüter O, Schwarzenbolz U, Jäger H, Holzhauser T, Bergmair J, Roth A, Sevenich R, Bandick N, Kulling SE, Knorr D, Engel KH, Heinz V. Aspects of high hydrostatic pressure food processing: Perspectives on technology and food safety. Compr Rev Food Sci Food Saf 2021; 20:3225-3266. [PMID: 34056857 DOI: 10.1111/1541-4337.12763] [Citation(s) in RCA: 49] [Impact Index Per Article: 16.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2020] [Revised: 04/02/2021] [Accepted: 04/10/2021] [Indexed: 11/29/2022]
Abstract
The last two decades saw a steady increase of high hydrostatic pressure (HHP) used for treatment of foods. Although the science of biomaterials exposed to high pressure started more than a century ago, there still seem to be a number of unanswered questions regarding safety of foods processed using HHP. This review gives an overview on historical development and fundamental aspects of HHP, as well as on potential risks associated with HHP food applications based on available literature. Beside the combination of pressure and temperature, as major factors impacting inactivation of vegetative bacterial cells, bacterial endospores, viruses, and parasites, factors, such as food matrix, water content, presence of dissolved substances, and pH value, also have significant influence on their inactivation by pressure. As a result, pressure treatment of foods should be considered for specific food groups and in accordance with their specific chemical and physical properties. The pressure necessary for inactivation of viruses is in many instances slightly lower than that for vegetative bacterial cells; however, data for food relevant human virus types are missing due to the lack of methods for determining their infectivity. Parasites can be inactivated by comparatively lower pressure than vegetative bacterial cells. The degrees to which chemical reactions progress under pressure treatments are different to those of conventional thermal processes, for example, HHP leads to lower amounts of acrylamide and furan. Additionally, the formation of new unknown or unexpected substances has not yet been observed. To date, no safety-relevant chemical changes have been described for foods treated by HHP. Based on existing sensitization to non-HHP-treated food, the allergenic potential of HHP-treated food is more likely to be equivalent to untreated food. Initial findings on changes in packaging materials under HHP have not yet been adequately supported by scientific data.
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Affiliation(s)
- Kemal Aganovic
- DIL German Institute of Food Technologies e.V., Quakenbrück, Germany
| | - Christian Hertel
- DIL German Institute of Food Technologies e.V., Quakenbrück, Germany
| | - Rudi F Vogel
- Technical University of Munich (TUM), Munich, Germany
| | - Reimar Johne
- German Federal Institute for Risk Assessment (BfR), Berlin, Germany
| | - Oliver Schlüter
- Leibniz Institute for Agricultural Engineering and Bioeconomy (ATB), Potsdam, Germany.,Alma Mater Studiorum, University of Bologna, Cesena, Italy
| | | | - Henry Jäger
- University of Natural Resources and Life Sciences (BOKU), Wien, Austria
| | - Thomas Holzhauser
- Division of Allergology, Paul-Ehrlich-Institut (PEI), Langen, Germany
| | | | - Angelika Roth
- Senate Commission on Food Safety (DFG), IfADo, Dortmund, Germany
| | - Robert Sevenich
- Leibniz Institute for Agricultural Engineering and Bioeconomy (ATB), Potsdam, Germany.,Technical University of Berlin (TUB), Berlin, Germany
| | - Niels Bandick
- German Federal Institute for Risk Assessment (BfR), Berlin, Germany
| | | | | | | | - Volker Heinz
- DIL German Institute of Food Technologies e.V., Quakenbrück, Germany
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10
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Effect of high pressure processing, allyl isothiocyanate, and acetic acid stresses on Salmonella survivals, storage, and appearance color in raw ground chicken meat. Food Control 2021. [DOI: 10.1016/j.foodcont.2020.107784] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
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11
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Chuang S, Sheen S, Sommers CH, Sheen LY. Modeling the reduction of Salmonella and Listeria monocytogenes in ground chicken meat by high pressure processing and trans-cinnamaldehyde. Lebensm Wiss Technol 2021. [DOI: 10.1016/j.lwt.2020.110601] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
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12
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Allison A, Fouladkhah AC. Sensitivity of wild-type and rifampicin-resistant O157 and non-O157 Shiga toxin-producing Escherichia coli to elevated hydrostatic pressure and lactic acid in ground meat and meat homogenate. PLoS One 2021; 16:e0246735. [PMID: 33600440 PMCID: PMC7891723 DOI: 10.1371/journal.pone.0246735] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2020] [Accepted: 01/25/2021] [Indexed: 11/19/2022] Open
Abstract
Various serogroups of Shiga toxin-producing Escherichia coli have been epidemiologically associated with foodborne disease episodes in the United States and around the globe, with E. coli O157: H7 as the dominant serogroup of public health concern. Serogroups other than O157 are currently associated with about 60% of Shiga toxin-producing E. coli related foodborne illness episodes. Current study evaluated sensitivity of the O157 and epidemiologically important non-O157 serogroups of the pathogen to elevated hydrostatic pressure and 1% lactic acid. Pressure intensity of 250 to 650 MPa were applied for 0 to 7 min for inactivation of strain mixtures of wild-type and rifampicin-resistant E. coli O157, as well as O26, O45, O103, O111, O121, and O145 serogroups and ATCC® 43895™ strain in ground meat and 10% meat homogenate. E. coli O157 were reduced (p < 0.05) from 6.86 ± 0.2 to 4.56 ± 0.1 log CFU/g when exposed to pressure of 650 MPa for 7 min. Corresponding reductions (p < 0.05) for non-O157 E. coli were from 6.98 ± 0.3 to 4.72 ± 0.1. The D-values at 650 MPa were 3.71 and 3.47 min for O157 and non-O157 serogroups, respectively. Presence of 1% lactic acid to a great extent augmented (p < 0.05) decontamination efficacy of the treatment in meat homogenate resulting in up to 5.6 and 6.0 log CFU/mL reductions for O157 and non-O157 serogroups, respectively. Among the tested serogroups, the wild-type and rifampicin-resistant phenotypes exhibited (p ≥ 0.05) comparable pressure sensitivity. Thus, these two phenotypes could be used interchangeably in validation studies. Our results also illustrate that, application of elevated hydrostatic pressure could be utilized for assuring safety of ground and non-intact meat products against various serogroups of Shiga toxin-producing E. coli. Addition of 1% lactic acid additionally provided industrially appreciable augmentation in efficacy of the pressure-based treatments.
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Affiliation(s)
- Abimbola Allison
- Public Health Microbiology Laboratory, Tennessee State University, Nashville, Tennessee, United States of America
| | - Aliyar Cyrus Fouladkhah
- Public Health Microbiology Laboratory, Tennessee State University, Nashville, Tennessee, United States of America
- * E-mail: ,
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13
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Chuang S, Sheen S, Sommers CH, Sheen LY. Modeling the effect of simultaneous use of allyl isothiocyanate and cinnamaldehyde on high hydrostatic pressure inactivation of Uropathogenic and Shiga toxin-producing Escherichia coli in ground chicken. JOURNAL OF THE SCIENCE OF FOOD AND AGRICULTURE 2021; 101:1193-1201. [PMID: 32785931 DOI: 10.1002/jsfa.10731] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/14/2020] [Revised: 08/07/2020] [Accepted: 08/12/2020] [Indexed: 06/11/2023]
Abstract
BACKGROUND A combination of high-pressure processing (HPP) and antimicrobials is a well-known approach for enhancing the microbiological safety of foods. However, few studies have applied multiple antimicrobials simultaneously with HPP, which could be an additional hurdle for microbial inactivation. The present study applied a full factorial design to investigate the impact of HPP (225-325 MPa; 10-20 min), allyl isothiocyanate (AITC) (0.3-0.9 g kg-1 ) and trans-cinnamaldehyde (tCinn) (1.0-2.0 g kg-1 ) on the inactivation of Shiga toxin-producing Escherichia coli (STEC) O157:H7 and uropathogenic E. coli (UPEC) in ground chicken meat. RESULTS The regulatory requirement of 5-log reduction was achieved at 305 MPa, 18 min, 0.8 g kg-1 AITC and 1.7 g kg-1 tCinn for STEC O157:H7 and at 293 MPa, 16 min, 0.6 g kg-1 AITC and 1.6 g kg-1 tCinn for UPEC, as specified by response surface analysis and verified via experiments. The surviving population was eliminated by post-treatment storage of 9 days at 10 °C. The developed linear regression models showed r2 > 0.9 for the E. coli inactivation. The developed dimensionless non-linear regression models covered a factorial range slightly wider than the original experimental limit, with probability Pr > F (< 0.0001). CONCLUSION Simultaneous use of AITC and tCinn reduced not only the necessary concentration of each compound, but also the intensity of high-pressure treatments, at the same time achieving a similar level of microbial inactivation. STEC O157:H7 was found to be more resistant than UPEC to the HPP-AITC-tCinn stress. The developed models may be applied in commercial application to enhance the microbiological safety of ground chicken meat. Published 2020. This article is a U.S. Government work and is in the public domain in the USA.
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Affiliation(s)
- Shihyu Chuang
- Eastern Regional Research Center, Agricultural Research Service, US Department of Agriculture, Wyndmoor, PA, USA
- Institute of Food Science and Technology, National Taiwan University, Taipei, Taiwan
| | - Shiowshuh Sheen
- Eastern Regional Research Center, Agricultural Research Service, US Department of Agriculture, Wyndmoor, PA, USA
| | - Christopher H Sommers
- Eastern Regional Research Center, Agricultural Research Service, US Department of Agriculture, Wyndmoor, PA, USA
| | - Lee-Yan Sheen
- Institute of Food Science and Technology, National Taiwan University, Taipei, Taiwan
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14
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Zhou S, Sheen S, Zhao G, Chuang S, Liu L. Prediction of Salmonella inactivation in sliced tomato subject to high pressure processing and trans-cinnamaldehyde treatment using selective and non-selective growth media for survival evaluations. Food Control 2020. [DOI: 10.1016/j.foodcont.2020.107441] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
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15
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Kung H, Lee Y, Hwang C, Wu Y, Hsieh C, Tsai Y. Inactivation of Morganella morganii by high hydrostatic pressure combined with lemon essential oil. Food Sci Nutr 2020; 8:3435-3441. [PMID: 32724607 PMCID: PMC7382204 DOI: 10.1002/fsn3.1626] [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: 03/10/2020] [Revised: 04/15/2020] [Accepted: 04/16/2020] [Indexed: 11/28/2022] Open
Abstract
The inactivation and damage of histamine-forming bacterium, Morganella morganii, in phosphate buffer and tuna meat slurry by high hydrostatic pressure (HHP) alone or in combination with 0.2% lemon essential oil (LEO) treatments were studied using viability measurement and scanning electron microscopy (SEM). HHP alone or in combination with LEO treatments showed first-order destruction kinetics to M. morganii during pressure holding period. The D values of M. morganii (200 to 600 MPa) in phosphate buffer ranged from 16.4 to 0.08 min, whereas those in tuna meat slurry ranged from 51.0 to 0.10 min, respectively. M. morganii in tuna meat slurry had higher D values and were more resistant to HHP treatments than in phosphate buffer. In addition, the D values of HHP in combination with LEO treatment were lower than those of HHP treatment alone at <400 MPa of pressure, indicating that it is more effective to inactivate M. morganii under the same pressure. The results showed the M. morganii at HHP in combination with LEO treatment was more susceptible to pressure treatment alone. HHP with or without LEO treatments can be used to inactivate M. morganii by causing disruption to bacterial cell membrane and cell wall as demonstrated by SEM micrographs.
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Affiliation(s)
| | - Yi‐Chen Lee
- Department of Seafood ScienceNational Kaohsiung University of Science and TechnologyKaohsiungTaiwan
| | - Chiu‐Chu Hwang
- Department of Hospitality ManagementYu Da University of Science and TechnologyMiaoliTaiwan
| | - Ying‐Chuan Wu
- Department of Seafood ScienceNational Kaohsiung University of Science and TechnologyKaohsiungTaiwan
| | - Ching‐Yu Hsieh
- Department of Seafood ScienceNational Kaohsiung University of Science and TechnologyKaohsiungTaiwan
| | - Yung‐Hsiang Tsai
- Department of Seafood ScienceNational Kaohsiung University of Science and TechnologyKaohsiungTaiwan
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16
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Fink R, Potočnik A, Oder M. Plant-based natural saponins for Escherichia coli surface hygiene management. Lebensm Wiss Technol 2020. [DOI: 10.1016/j.lwt.2020.109018] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
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17
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Tesson V, Federighi M, Cummins E, de Oliveira Mota J, Guillou S, Boué G. A Systematic Review of Beef Meat Quantitative Microbial Risk Assessment Models. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2020; 17:ijerph17030688. [PMID: 31973083 PMCID: PMC7037662 DOI: 10.3390/ijerph17030688] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/29/2019] [Revised: 01/13/2020] [Accepted: 01/15/2020] [Indexed: 11/16/2022]
Abstract
Each year in Europe, meat is associated with 2.3 million foodborne illnesses, with a high contribution from beef meat. Many of these illnesses are attributed to pathogenic bacterial contamination and inadequate operations leading to growth and/or insufficient inactivation occurring along the whole farm-to-fork chain. To ensure consumer health, decision-making processes in food safety rely on Quantitative Microbiological Risk Assessment (QMRA) with many applications in recent decades. The present study aims to conduct a critical analysis of beef QMRAs and to identify future challenges. A systematic approach, the Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) guidelines, was used to collate beef QMRA models, identify steps of the farm-to-fork chain considered, and analyze inputs and outputs included as well as modelling methods. A total of 2343 articles were collected and 67 were selected. These studies focused mainly on western countries and considered Escherichia coli (EHEC) and Salmonella spp. pathogens. Future challenges were identified and included the need of whole-chain assessments, centralization of data collection processes, and improvement of model interoperability through harmonization. The present analysis can serve as a source of data and information to inform QMRA framework for beef meat and will help the scientific community and food safety authorities to identify specific monitoring and research needs.
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Affiliation(s)
| | | | - Enda Cummins
- Biosystems Engineering, School of Agriculture, Food Science and Veterinary Medicine, Agriculture and Food Science Centre, University College Dublin, Belfield, Dublin 4, Ireland
| | | | | | - Géraldine Boué
- INRA, Oniris, SECALIM, 44307 Nantes, France; (V.T.)
- Correspondence:
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18
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Ma J, Wang H, Yu L, Yuan W, Fu W, Gao F, Jiang Y. Dynamic self-recovery of injured Escherichia coli O157:H7 induced by high pressure processing. Lebensm Wiss Technol 2019. [DOI: 10.1016/j.lwt.2019.108308] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
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19
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Sibanyoni JJ, Tabit FT. An assessment of the hygiene status and incidence of foodborne pathogens on food contact surfaces in the food preparation facilities of schools. Food Control 2019. [DOI: 10.1016/j.foodcont.2018.11.009] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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20
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Kim HW, Chung DH, Kim SA, Rhee MS. Synergistic cranberry juice combinations with natural-borne antimicrobials for the eradication of uropathogenic Escherichia coli biofilm within a short time. Lett Appl Microbiol 2019; 68:321-328. [PMID: 30801748 DOI: 10.1111/lam.13140] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2019] [Revised: 02/16/2019] [Accepted: 02/19/2019] [Indexed: 01/24/2023]
Abstract
Urinary tract infections (UTI), one of the most common diseases in humans, are caused primarily by uropathogenic Escherichia coli (UPEC). Cranberry juice (CB) is a widely known prophylaxis for UTI, but the treatment of CB alone could not effectively eradicate preformed UPEC biofilms. The aim of this study was to develop enforced CB composites within a short time by adding a small quantity of natural borne antimicrobials. UPEC biofilms (initial: 6·0 log CFU per cm2 ), formed on silicone coupons in artificial urine medium, were exposed to CB (4-8%), caprylic acid (CAR; 0·025-0·05%) and thymol (TM; 0·025-0·05%) at 37°C for 1 min. Individual treatment of each compound did not show the significant antibacterial effect on UPEC biofilms (P > 0·05). Otherwise, the survivor counts of biofilms were synergistically reduced with CB containing any of the antimicrobials. For example combined treatment with CB (8%) + CAR (0·05%) + TM (0·05%) resulted in a 6 log reduction in UPEC populations in the biofilm (no detectable bacteria remained) with 4·6 log of synergistic bactericidal effect. The confocal laser scanning microscope images indicated that any composites including TM might result in biofilm detachment from the surface. The present method is cost-effective and more acceptable to consumers as it is based on the synergistic interaction of natural borne antimicrobials. The results of this study could be widely applicable in the functional food, medical and healthcare field. SIGNIFICANCE AND IMPACT OF THE STUDY: Anti-biofilm effect of cranberry juice (CB) has been focused mainly on inhibiting biofilm formation of uropathogenic Escherichia coli (UPEC); however, combined treatment with natural borne antimicrobials derived from coconut oil (caprylic acid) and oregano essential oil (thymol) could synergistically enhance its eradicating activity against biofilms. This study developed novel CB composites showing marked anti-biofilm effects (complete eradication of UPEC biofilms within just 1 min).
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Affiliation(s)
- H W Kim
- Department of Biotechnology, College of Life Sciences and Biotechnology, Korea University, Seoul, Republic of Korea
| | - D H Chung
- Department of Biotechnology, College of Life Sciences and Biotechnology, Korea University, Seoul, Republic of Korea
| | - S A Kim
- Department of Food Science and Engineering, Ewha Womans University, Seoul, Republic of Korea
| | - M S Rhee
- Department of Biotechnology, College of Life Sciences and Biotechnology, Korea University, Seoul, Republic of Korea
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21
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Combination Effect of High-Pressure Processing and Essential Oil (Melissa officinalis Extracts) or Their Constituents for the Inactivation of Escherichia coli in Ground Beef. FOOD BIOPROCESS TECH 2018. [DOI: 10.1007/s11947-018-2211-5] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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22
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Huang CY, Sheen S, Sommers C, Sheen LY. Modeling the Survival of Escherichia coli O157:H7 Under Hydrostatic Pressure, Process Temperature, Time and Allyl Isothiocyanate Stresses in Ground Chicken Meat. Front Microbiol 2018; 9:1871. [PMID: 30154776 PMCID: PMC6102346 DOI: 10.3389/fmicb.2018.01871] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2018] [Accepted: 07/25/2018] [Indexed: 12/30/2022] Open
Abstract
Shiga toxin-producing Escherichia coli O157:H7 (STEC) is a common contaminant in meat and poultry. We investigated the use of non-thermal high pressure processing (HPP), with or without allyl isothiocyanate (AITC) essential oil, to kill STEC in ground chicken meat. Temperature was found an important factor affecting the inactivation of STEC in addition to pressure and process time. A full factorial experiment design (4 factors × 2 levels) was used to facilitate and evaluate the effect of pressure (250–350 MPa), operation temperature (−15–4°C), AITC concentration (0.05–0.15%, w/w), and pressure-holding time (10–20 min) on the inactivation of STEC. A linear model (a polynomial equation) was developed to predict/describe those four parameters’ impact on E. coli O157:H7 survival (R2 = 0.90), as well as a dimensionless non-linear model. Both types of models were validated with data obtained from separate experimental points. The dimensionless model also demonstrated that it may predict the lethality (defined as the log CFU/g reduction of STEC before and after treatment) reasonably well with some factors set slightly outside the design ranges (e.g., a wider application than the linear model). The results provide important information regarding STEC survival as affected by HPP (e.g., pressure, time and temperature) and AITC. With the addition of AITC, the hydrostatic pressure may be lowered to the 250–350 MPa level. Regulatory agencies and food industry may use those models for STEC risk assessment in ground chicken meat. A storage test (at 4 and 10°C, 10 days) after HPP+AITC treatment indicated that AITC may continue depressing or killing the pressure-damaged cells.
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Affiliation(s)
- Chi-Yun Huang
- Institute of Food Science and Technology, National Taiwan University, Taipei, Taiwan.,Eastern Regional Research Center, Agricultural Research Service, United States Department of Agriculture, Wyndmoor, PA, United States
| | - Shiowshuh Sheen
- Eastern Regional Research Center, Agricultural Research Service, United States Department of Agriculture, Wyndmoor, PA, United States
| | - Christopher Sommers
- Eastern Regional Research Center, Agricultural Research Service, United States Department of Agriculture, Wyndmoor, PA, United States
| | - Lee-Yan Sheen
- Institute of Food Science and Technology, National Taiwan University, Taipei, Taiwan
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23
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Sheen S, Huang CY, Ramos R, Chien SY, Scullen OJ, Sommers C. Lethality Prediction for Escherichia Coli O157:H7 and Uropathogenic E. coli in Ground Chicken Treated with High Pressure Processing and Trans-Cinnamaldehyde. J Food Sci 2018; 83:740-749. [PMID: 29411883 DOI: 10.1111/1750-3841.14059] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2017] [Revised: 11/28/2017] [Accepted: 01/03/2018] [Indexed: 01/09/2023]
Abstract
UNLABELLED Pathogenic Escherichia coli, intestinal (O157:H7) as well as extraintestinal types (for example, Uropathogenic E. coli [UPEC]) are commonly found in many foods including raw chicken meat. The resistance of E. coli O157:H7 to UPEC in chicken meat under the stresses of high hydrostatic Pressure (HHP, also known as HPP-high pressure processing) and trans-cinnamaldehyde (an essential oil) was investigated and compared. UPEC was found slightly less resistant than O157:H7 in our test parameter ranges. With the addition of trans-cinnamaldehyde as an antimicrobial to meat, HPP lethality enhanced both O157:H7 and UPEC inactivation. To facilitate the predictive model development, a central composite design (CCD) was used to assess the 3-parameter effects, that is, pressure (300 to 400 MPa), trans-cinnamaldehyde dose (0.2 to 0.5%, w/w), and pressure-holding time (15 to 25 min), on the inactivation of E. coli O157:H7 and UPEC in ground chicken. Linear models were developed to estimate the lethality of E. coli O157:H7 (R2 = 0.86) and UPEC (R2 = 0.85), as well as dimensionless nonlinear models. All models were validated with data obtained from separated CCD combinations. Because linear models of O157:H7 and UPEC had similar R2 and the significant lethality difference of CCD points was only 9 in 20; all data were combined to generate models to include both O157:H7 and UPEC. The results provide useful information/tool to predict how pathogenic E. coli may survive HPP in the presence of trans-cinnamaldehyde and to achieve a great than 5 log CFU/g reduction in chicken meat. The models may be used for process optimization, product development and to assist the microbial risk assessment. PRACTICAL APPLICATION The study provided an effective means to reduce the high hydrostatic pressure level with incorporation of antimicrobial compound to achieve a 5-log reduction of pathogenic E. coli without damaging the raw meat quality. The developed models may be used to predict the high pressure processing lethality (and process optimization), product development (ingredient selection), and to assist the microbial risk assessment.
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Affiliation(s)
- Shiowshuh Sheen
- Eastern Regional Research Center, Agricultural Research Service, U.S. Dept. of Agriculture, Wyndmoor, PA 19038, U.S.A
| | - Chi-Yun Huang
- Eastern Regional Research Center, Agricultural Research Service, U.S. Dept. of Agriculture, Wyndmoor, PA 19038, U.S.A
- Inst. of Food Science and Technology, Natl. Taiwan Univ., Taiwan
| | - Rommel Ramos
- Eastern Regional Research Center, Agricultural Research Service, U.S. Dept. of Agriculture, Wyndmoor, PA 19038, U.S.A
| | - Shih-Yung Chien
- Inst. of Food Science and Technology, Natl. Taiwan Univ., Taiwan
| | - O Joseph Scullen
- Eastern Regional Research Center, Agricultural Research Service, U.S. Dept. of Agriculture, Wyndmoor, PA 19038, U.S.A
| | - Christopher Sommers
- Eastern Regional Research Center, Agricultural Research Service, U.S. Dept. of Agriculture, Wyndmoor, PA 19038, U.S.A
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24
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Oder M, Arlič M, Bohinc K, Fink R. Escherichia coli biofilm formation and dispersion under hydrodynamic conditions on metal surfaces. INTERNATIONAL JOURNAL OF ENVIRONMENTAL HEALTH RESEARCH 2018; 28:55-63. [PMID: 29232959 DOI: 10.1080/09603123.2017.1415309] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
The aim of this study was to analyze the impact of hydrodynamic forces on the multiplication of E. coli, and biofilm formation and dispersion. The experiments were provided in a flow chamber simulating a cleaning-in-place system. Biofilm biomass was measured using a crystal violet dye method. The results show that hydrodynamic forces affect not only biofilm formation and dispersion but the multiplication of E. coli in the first place. We found more biofilm biomass on the rough surface than on the smooth one. The results of the biofilm formation test show that laminar flow promotes the biofilm growth over 72 h, meanwhile turbulent flow after 48 h causes decrease in biomass. The results of the biofilm dispersion test, in contrast, show that laminar flow removed less biofilm from both materials that turbulent flow did. Therefore, taking into account these findings in cleaning-in-place technology can substantially reduce E. coli multiplication and biofilm formation.
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Affiliation(s)
- Martina Oder
- a Faculty of Health Sciences , University of Ljubljana , Ljubljana , Slovenia
| | - Mateja Arlič
- a Faculty of Health Sciences , University of Ljubljana , Ljubljana , Slovenia
| | - Klemen Bohinc
- a Faculty of Health Sciences , University of Ljubljana , Ljubljana , Slovenia
| | - Rok Fink
- a Faculty of Health Sciences , University of Ljubljana , Ljubljana , Slovenia
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25
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Effect of tomato paste addition and high pressure processing to preserve pork burgers. Eur Food Res Technol 2017. [DOI: 10.1007/s00217-017-3002-3] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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