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A Systematic Quantitative Determination of the Antimicrobial Efficacy of Grape Seed Extract against Foodborne Bacterial Pathogens. Foods 2023; 12:foods12050929. [PMID: 36900445 PMCID: PMC10001079 DOI: 10.3390/foods12050929] [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: 02/01/2023] [Revised: 02/15/2023] [Accepted: 02/17/2023] [Indexed: 02/24/2023] Open
Abstract
Concerns regarding the role of antimicrobial resistance (AMR) in disease outbreaks are growing due to the excessive use of antibiotics. Moreover, consumers are demanding food products that are minimally processed and produced in a sustainable way, without the use of chemical preservatives or antibiotics. Grape seed extract (GSE) is isolated from wine industry waste and is an interesting source of natural antimicrobials, especially when aiming to increase sustainable processing. The aim of this study was to obtain a systematic understanding of the microbial inactivation efficacy/potential of GSE against Listeria monocytogenes (Gram-positive), Escherichia coli and Salmonella Typhimurium (Gram-negative) in an in vitro model system. More specifically, for L. monocytogenes, the effects of the initial inoculum concentration, bacterial growth phase and absence of the environmental stress response regulon (SigB) on the GSE microbial inactivation potential were investigated. In general, GSE was found to be highly effective at inactivating L. monocytogenes, with higher inactivation achieved for higher GSE concentrations and lower initial inoculum levels. Generally, stationary phase cells were more resistant/tolerant to GSE as compared to exponential phase cells (for the same inoculum level). Additionally, SigB appears to play an important role in the resistance of L. monocytogenes to GSE. The Gram-negative bacteria under study (E. coli and S. Typhimurium) were less susceptible to GSE as compared to L. monocytogenes. Our findings provide a quantitative and mechanistic understanding of the impact of GSE on the microbial dynamics of foodborne pathogens, assisting in the more systematic design of natural antimicrobial-based strategies for sustainable food safety.
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Comparison of microbial reduction effect of intense pulsed light according to growth stage and population density of Escherichia coli ATCC 25922 using a double Weibull model. Food Res Int 2023; 164:112353. [PMID: 36737941 DOI: 10.1016/j.foodres.2022.112353] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2022] [Revised: 12/14/2022] [Accepted: 12/23/2022] [Indexed: 12/26/2022]
Abstract
This study evaluated how the efficacy of intense pulsed light (IPL) was influenced by biological factors such as the incubation time and the population of Escherichia coli. According to the 4D value, the microorganisms in the exponential phase were more susceptible to IPL (0.51 J/cm2), while those in the stationary phase were the most resistant (0.67 J/cm2). The microorganisms in the exponential phase could have more critical DNA damage. In addition, the degree of inactivation was affected by the microbial population. When the population was 109 CFU/ml, a maximum 3.4-log reduction was observed after applying IPL at 12.5 J/cm2. In contrast, a population with a density of 1010 CFU/ml showed maximally 0.13-log reduction when IPL was applied at 18.7 J/cm2. This large difference might have been due to cell distribution and aggregation. The study is expected to contribute to the analytical confirmation of the microbial reduction mechanism through non-thermal technologies.
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3
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Du L, Sun Y, Han L, Su S. Inactivation of Saccharomyces cerevisiae by combined high pressure carbon dioxide and high pressure homogenization. J Supercrit Fluids 2022. [DOI: 10.1016/j.supflu.2022.105816] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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4
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Gomez-Gomez A, Brito-de la Fuente E, Gallegos C, Garcia-Perez JV, Quiles A, Benedito J. Microbial inactivation by means of ultrasonic assisted supercritical CO2. Effect on cell ultrastructure. J Supercrit Fluids 2022. [DOI: 10.1016/j.supflu.2021.105407] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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5
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Combined pulsed electric field and high-power ultrasound treatments for microbial inactivation in oil-in-water emulsions. Food Control 2021. [DOI: 10.1016/j.foodcont.2021.108348] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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6
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Ultrasonic-assisted supercritical CO2 inactivation of bacterial spores and effect on the physicochemical properties of oil-in-water emulsions. J Supercrit Fluids 2021. [DOI: 10.1016/j.supflu.2021.105246] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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7
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Gomez-Gomez A, Brito-de la Fuente E, Gallegos C, Garcia-Perez JV, Benedito J. Combination of supercritical CO 2 and high-power ultrasound for the inactivation of fungal and bacterial spores in lipid emulsions. ULTRASONICS SONOCHEMISTRY 2021; 76:105636. [PMID: 34192660 PMCID: PMC8254120 DOI: 10.1016/j.ultsonch.2021.105636] [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: 11/05/2020] [Revised: 05/20/2021] [Accepted: 06/15/2021] [Indexed: 05/28/2023]
Abstract
For the first time, this study addresses the intensification of supercritical carbon dioxide (SC-CO2) treatments using high-power ultrasound (HPU) for the inactivation of fungal (Aspergillus niger) and bacterial (Clostridium butyricum) spores in oil-in-water emulsions. The inactivation kinetics were analyzed at different pressures (100, 350 and 550 bar) and temperatures (50, 60, 70, 80, 85 °C), depending on the microorganism, and compared to the conventional thermal treatment. The inactivation kinetics were satisfactorily described using the Weibull model. Experimental results showed that SC-CO2 enhanced the inactivation level of both spores when compared to thermal treatments. Bacterial spores (C.butyricum) were found to be more resistant to SC-CO2 + HPU, than fungal (A.niger) ones, as also observed in the thermal and SC-CO2 treatments. The application of HPU intensified the SC-CO2 inactivation of C.butyricum spores, e.g. shortening the total inactivation time from 10 to 3 min at 85 °C. However, HPU did not affect the SC-CO2 inactivation of A.niger spores. The study into the effect of a combined SC-CO2 + HPU treatment has to be necessarily extended to other fungal and bacterial spores, and future studies should elucidate the impact of HPU application on the emulsion's stability.
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Affiliation(s)
- Angela Gomez-Gomez
- Grupo ASPA, Departamento de Tecnología de Alimentos, Universitat Politècnica de València, Camí de Vera s/n, València E46022, Spain
| | - Edmundo Brito-de la Fuente
- Fresenius-Kabi Deutschland GmbH, Product and Process Engineering Center, Pharmaceuticals & Device Division, Bad Homburg, Germany
| | - Críspulo Gallegos
- Fresenius-Kabi Deutschland GmbH, Product and Process Engineering Center, Pharmaceuticals & Device Division, Bad Homburg, Germany
| | - Jose V Garcia-Perez
- Grupo ASPA, Departamento de Tecnología de Alimentos, Universitat Politècnica de València, Camí de Vera s/n, València E46022, Spain
| | - Jose Benedito
- Grupo ASPA, Departamento de Tecnología de Alimentos, Universitat Politècnica de València, Camí de Vera s/n, València E46022, Spain.
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8
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Barbosa J, Puton BMS, Fischer B, Junges A, Paroul N, Steffens C, Zeni J, Steffens J, Valduga E, Toniazzo Backes G, Cansian RL. Effect of Supercritical CO 2 on Physicochemical Characteristics and D-Value of S. aureus in Raw Salmon. Ind Biotechnol (New Rochelle N Y) 2020. [DOI: 10.1089/ind.2020.0024] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Affiliation(s)
- Juliana Barbosa
- Department of Food Engineering, URI Erechim, Erechim, Rio Grande do Sul, Brazil
| | | | - Bruno Fischer
- Department of Food Engineering, URI Erechim, Erechim, Rio Grande do Sul, Brazil
| | - Alexander Junges
- Department of Food Engineering, URI Erechim, Erechim, Rio Grande do Sul, Brazil
| | - Natalia Paroul
- Department of Food Engineering, URI Erechim, Erechim, Rio Grande do Sul, Brazil
| | - Clarice Steffens
- Department of Food Engineering, URI Erechim, Erechim, Rio Grande do Sul, Brazil
| | - Jamile Zeni
- Department of Food Engineering, URI Erechim, Erechim, Rio Grande do Sul, Brazil
| | - Juliana Steffens
- Department of Food Engineering, URI Erechim, Erechim, Rio Grande do Sul, Brazil
| | - Eunice Valduga
- Department of Food Engineering, URI Erechim, Erechim, Rio Grande do Sul, Brazil
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9
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Gomez-Gomez A, Brito-de la Fuente E, Gallegos C, Garcia-Perez JV, Benedito J. Non-thermal pasteurization of lipid emulsions by combined supercritical carbon dioxide and high-power ultrasound treatment. ULTRASONICS SONOCHEMISTRY 2020; 67:105138. [PMID: 32339868 DOI: 10.1016/j.ultsonch.2020.105138] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/11/2020] [Revised: 04/17/2020] [Accepted: 04/20/2020] [Indexed: 06/11/2023]
Abstract
Supercritical carbon dioxide (SC-CO2) is a novel method for food pasteurization, but there is still room for improvement in terms of the process shortening and its use in products with high oil content. This study addressed the effect of high power ultrasound (HPU) on the intensification of the SC-CO2 inactivation of E. coli and B. diminuta in soybean oil-in-water emulsions. Inactivation kinetics were obtained at different pressures (100 and 350 bar), temperatures (35 and 50 °C) and oil contents (0, 10, 20 and 30%) and were satisfactorily described using the Weibull model. The experimental results showed that for SC-CO2 treatments, the higher the pressure or the temperature, the higher the level of inactivation. Ultrasound greatly intensified the inactivation capacity of SC-CO2, shortening the process time by approximately 1 order of magnitude (from 50 to 90 min to 5-10 min depending on the microorganism and process conditions). Pressure and temperature also had a significant (p < 0.05) effect on SC-CO2 + HPU inactivation for both bacteria, although the effect was less intense than in the SC-CO2 treatments. E. coli was found to be more resistant than B. diminuta in SC-CO2 treatments, while no differences were found when HPU was applied. HPU decreased the protective effect of oil in the inactivation and similar microbial reductions were obtained regardless of the oil content in the emulsion. Therefore, HPU intensification of SC-CO2 treatments is a promising alternative to the thermal pasteurization of lipid emulsions with heat sensitive compounds.
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Affiliation(s)
- Angela Gomez-Gomez
- Grupo ASPA, Departamento de Tecnología de Alimentos, Universitat Politècnica de València, Camí de Vera s/n, València E46022, Spain
| | - Edmundo Brito-de la Fuente
- Fresenius-Kabi Deutschland GmbH, Product and Process Engineering Center, Pharmaceuticals & Device Division, Bad Homburg, Germany
| | - Críspulo Gallegos
- Fresenius-Kabi Deutschland GmbH, Product and Process Engineering Center, Pharmaceuticals & Device Division, Bad Homburg, Germany
| | - Jose Vicente Garcia-Perez
- Grupo ASPA, Departamento de Tecnología de Alimentos, Universitat Politècnica de València, Camí de Vera s/n, València E46022, Spain
| | - Jose Benedito
- Grupo ASPA, Departamento de Tecnología de Alimentos, Universitat Politècnica de València, Camí de Vera s/n, València E46022, Spain.
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10
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da Silva Serres JD, Taisline Bandeira P, Cabral Zappani P, Piovan L, Corazza ML. A greener bioreduction using baker’s yeast cells in supercritical carbon dioxide and glycerol system. J Supercrit Fluids 2019. [DOI: 10.1016/j.supflu.2018.09.011] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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11
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12
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Alegbeleye OO, Guimarães JT, Cruz AG, Sant’Ana AS. Hazards of a ‘healthy’ trend? An appraisal of the risks of raw milk consumption and the potential of novel treatment technologies to serve as alternatives to pasteurization. Trends Food Sci Technol 2018. [DOI: 10.1016/j.tifs.2018.10.007] [Citation(s) in RCA: 36] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
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13
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Silva EK, Alvarenga VO, Bargas MA, Sant'Ana AS, Meireles MAA. Non-thermal microbial inactivation by using supercritical carbon dioxide: Synergic effect of process parameters. J Supercrit Fluids 2018. [DOI: 10.1016/j.supflu.2018.05.013] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
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14
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Xu F, Feng X, Sui X, Lin H, Han Y. Inactivation mechanism of Vibrio parahaemolyticus via supercritical carbon dioxide treatment. Food Res Int 2017; 100:282-288. [DOI: 10.1016/j.foodres.2017.08.038] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2017] [Revised: 08/04/2017] [Accepted: 08/16/2017] [Indexed: 10/19/2022]
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15
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Freedman AJ, Tan B, Thompson JR. Microbial potential for carbon and nutrient cycling in a geogenic supercritical carbon dioxide reservoir. Environ Microbiol 2017; 19:2228-2245. [PMID: 28229521 PMCID: PMC5518199 DOI: 10.1111/1462-2920.13706] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2017] [Accepted: 02/17/2017] [Indexed: 11/30/2022]
Abstract
Microorganisms catalyze carbon cycling and biogeochemical reactions in the deep subsurface and thus may be expected to influence the fate of injected supercritical (sc) CO2 following geological carbon sequestration (GCS). We hypothesized that natural subsurface scCO2 reservoirs, which serve as analogs for the long-term fate of sequestered scCO2 , harbor a 'deep carbonated biosphere' with carbon cycling potential. We sampled subsurface fluids from scCO2 -water separators at a natural scCO2 reservoir at McElmo Dome, Colorado for analysis of 16S rRNA gene diversity and metagenome content. Sequence annotations indicated dominance of Sulfurospirillum, Rhizobium, Desulfovibrio and four members of the Clostridiales family. Genomes extracted from metagenomes using homology and compositional approaches revealed diverse mechanisms for growth and nutrient cycling, including pathways for CO2 and N2 fixation, anaerobic respiration, sulfur oxidation, fermentation and potential for metabolic syntrophy. Differences in biogeochemical potential between two production well communities were consistent with differences in fluid chemical profiles, suggesting a potential link between microbial activity and geochemistry. The existence of a microbial ecosystem associated with the McElmo Dome scCO2 reservoir indicates that potential impacts of the deep biosphere on CO2 fate and transport should be taken into consideration as a component of GCS planning and modelling.
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Affiliation(s)
- Adam J.E. Freedman
- Department of Civil and Environmental EngineeringMassachusetts Institute of TechnologyCambridgeMAUSA
| | - BoonFei Tan
- Center for Environmental Sensing and ModelingSingapore‐MIT Alliance for Research and TechnologySingaporeSingapore
| | - Janelle R. Thompson
- Department of Civil and Environmental EngineeringMassachusetts Institute of TechnologyCambridgeMAUSA
- Center for Environmental Sensing and ModelingSingapore‐MIT Alliance for Research and TechnologySingaporeSingapore
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16
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Ultrasound-assisted supercritical CO2 treatment in continuous regime: Application in Saccharomyces cerevisiae inactivation. J FOOD ENG 2016. [DOI: 10.1016/j.jfoodeng.2016.02.024] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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17
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Čolnik M, Primožič M, Knez Ž, Leitgeb M. Use of Non-Conventional Cell Disruption Method for Extraction of Proteins from Black Yeasts. Front Bioeng Biotechnol 2016; 4:33. [PMID: 27148527 PMCID: PMC4831980 DOI: 10.3389/fbioe.2016.00033] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2016] [Accepted: 03/29/2016] [Indexed: 11/18/2022] Open
Abstract
The influence of pressure and treatment time on cells disruption of different black yeasts and on activities of extracted proteins using supercritical carbon dioxide process was studied. The cells of three different black yeasts Phaeotheca triangularis, Trimatostroma salinum, and Wallemia ichthyophaga were exposed to supercritical carbon dioxide (SC CO2) by varying pressure at fixed temperature (35°C). The black yeasts cell walls were disrupted, and the content of the cells was spilled into the liquid medium. The impact of SC CO2 conditions on secretion of enzymes and proteins from black yeast cells suspension was studied. The residual activity of the enzymes cellulase, β-glucosidase, α-amylase, and protease was studied by enzymatic assay. The viability of black yeast cells was determined by measuring the optical density of the cell suspension at 600 nm. The total protein concentration in the suspension was determined on UV–Vis spectrophotometer at 595 nm. The release of intracellular and extracellular products from black yeast cells was achieved. Also, the observation by an environmental scanning electron microscopy shows major morphological changes with SC CO2-treated cells. The advantages of the proposed method are in a simple use, which is also possible for heat-sensitive materials on one hand and on the other hand integration of the extraction of enzymes and their use in biocatalytical reactions.
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Affiliation(s)
- Maja Čolnik
- Laboratory for Separation Processes and Product Design, Faculty of Chemistry and Chemical Engineering, University of Maribor , Maribor , Slovenia
| | - Mateja Primožič
- Laboratory for Separation Processes and Product Design, Faculty of Chemistry and Chemical Engineering, University of Maribor , Maribor , Slovenia
| | - Željko Knez
- Laboratory for Separation Processes and Product Design, Faculty of Chemistry and Chemical Engineering, University of Maribor , Maribor , Slovenia
| | - Maja Leitgeb
- Laboratory for Separation Processes and Product Design, Faculty of Chemistry and Chemical Engineering, University of Maribor , Maribor , Slovenia
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18
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In situ Raman quantification of the dissolution kinetics of carbon dioxide in liquid solutions during a dense phase and ultrasound treatment for the inactivation of Saccharomyces cerevisiae. J Supercrit Fluids 2016. [DOI: 10.1016/j.supflu.2016.01.019] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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19
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Lanzalaco S, Campora S, Brucato V, Carfì Pavia F, Di Leonardo ER, Ghersi G, Scialdone O, Galia A. Sterilization of macroscopic poly(l-lactic acid) porous scaffolds with dense carbon dioxide: Investigation of the spatial penetration of the treatment and of its effect on the properties of the matrix. J Supercrit Fluids 2016. [DOI: 10.1016/j.supflu.2016.01.014] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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20
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Ferrentino G, Spilimbergo S. A combined high pressure carbon dioxide and high power ultrasound treatment for the microbial stabilization of cooked ham. J FOOD ENG 2016. [DOI: 10.1016/j.jfoodeng.2015.11.013] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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21
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Efaq AN, Ab. Rahman NNN, Nagao H, Al-Gheethi AA, Ab. Kadir MO. Inactivation of Aspergillus Spores in Clinical Wastes by Supercritical Carbon Dioxide. ARABIAN JOURNAL FOR SCIENCE AND ENGINEERING 2016. [DOI: 10.1007/s13369-016-2087-5] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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22
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Wang MS, Zeng XA, Brennan CS, Brennan MA, Han Z. Effects of pulsed electric fields on the survival behaviour ofSaccharomyces cerevisiaesuspended in single solutions of low concentration. Int J Food Sci Technol 2015. [DOI: 10.1111/ijfs.13007] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Man-Sheng Wang
- College of Light Industry and Food Science; South China University of Technology; Guangzhou 510641 China
| | - Xin-An Zeng
- College of Light Industry and Food Science; South China University of Technology; Guangzhou 510641 China
| | - Charles S. Brennan
- College of Light Industry and Food Science; South China University of Technology; Guangzhou 510641 China
- Centre for Food Research and Innovation; Department of Wine, Food and Molecular Biosciences; Lincoln University; Lincoln 85084 New Zealand
| | - Margaret A. Brennan
- Centre for Food Research and Innovation; Department of Wine, Food and Molecular Biosciences; Lincoln University; Lincoln 85084 New Zealand
| | - Zhong Han
- College of Light Industry and Food Science; South China University of Technology; Guangzhou 510641 China
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23
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Duong T, Balaban M, Perera C, Bi X. Microbial and Sensory Effects of Combined High Hydrostatic Pressure and Dense Phase Carbon Dioxide Process on Feijoa Puree. J Food Sci 2015; 80:E2478-85. [DOI: 10.1111/1750-3841.13083] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2015] [Accepted: 08/20/2015] [Indexed: 11/27/2022]
Affiliation(s)
- Trang Duong
- School of Chemical Sciences; The Univ. of Auckland; Auckland New Zealand
| | - Murat Balaban
- Dept. of Chemical and Materials Engineering; The Univ. of Auckland; Auckland New Zealand
| | - Conrad Perera
- School of Chemical Sciences; The Univ. of Auckland; Auckland New Zealand
| | - Xiufang Bi
- College of Food Science and Nutritional Engineering; China Agricultural Univ; Beijing China
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24
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Ferrentino G, Spilimbergo S. High pressure carbon dioxide combined with high power ultrasound pasteurization of fresh cut carrot. J Supercrit Fluids 2015. [DOI: 10.1016/j.supflu.2014.12.014] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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25
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High-Power Ultrasound Assisted High-Pressure Carbon Dioxide Pasteurization of Fresh-Cut Coconut: a Microbial and Physicochemical Study. FOOD BIOPROCESS TECH 2015. [DOI: 10.1007/s11947-015-1582-0] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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26
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Hossain MS, Nik Ab Rahman NN, Balakrishnan V, Alkarkhi AFM, Ahmad Rajion Z, Ab Kadir MO. Optimizing supercritical carbon dioxide in the inactivation of bacteria in clinical solid waste by using response surface methodology. WASTE MANAGEMENT (NEW YORK, N.Y.) 2015; 38:462-473. [PMID: 25636860 DOI: 10.1016/j.wasman.2015.01.003] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/10/2014] [Revised: 12/04/2014] [Accepted: 01/02/2015] [Indexed: 06/04/2023]
Abstract
Clinical solid waste (CSW) poses a challenge to health care facilities because of the presence of pathogenic microorganisms, leading to concerns in the effective sterilization of the CSW for safe handling and elimination of infectious disease transmission. In the present study, supercritical carbon dioxide (SC-CO2) was applied to inactivate gram-positive Staphylococcus aureus, Enterococcus faecalis, Bacillus subtilis, and gram-negative Escherichia coli in CSW. The effects of SC-CO2 sterilization parameters such as pressure, temperature, and time were investigated and optimized by response surface methodology (RSM). Results showed that the data were adequately fitted into the second-order polynomial model. The linear quadratic terms and interaction between pressure and temperature had significant effects on the inactivation of S. aureus, E. coli, E. faecalis, and B. subtilis in CSW. Optimum conditions for the complete inactivation of bacteria within the experimental range of the studied variables were 20 MPa, 60 °C, and 60 min. The SC-CO2-treated bacterial cells, observed under a scanning electron microscope, showed morphological changes, including cell breakage and dislodged cell walls, which could have caused the inactivation. This espouses the inference that SC-CO2 exerts strong inactivating effects on the bacteria present in CSW, and has the potential to be used in CSW management for the safe handling and recycling-reuse of CSW materials.
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Affiliation(s)
- Md Sohrab Hossain
- Department of Environmental Technology, School of Industrial Technology, Universiti Sains Malaysia, 11800 Penang, Malaysia
| | | | - Venugopal Balakrishnan
- Institute for Research in Molecular Medicine, Universiti Sains Malaysia, 11800 Penang, Malaysia
| | - Abbas F M Alkarkhi
- Department of Environmental Technology, School of Industrial Technology, Universiti Sains Malaysia, 11800 Penang, Malaysia
| | - Zainul Ahmad Rajion
- School of Dental Science, Universiti Sains Malaysia, 16150 Kubang Kerian, Kelantan, Malaysia
| | - Mohd Omar Ab Kadir
- Department of Environmental Technology, School of Industrial Technology, Universiti Sains Malaysia, 11800 Penang, Malaysia.
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27
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High pressure carbon dioxide combined with high power ultrasound processing of dry cured ham spiked with Listeria monocytogenes. Food Res Int 2014. [DOI: 10.1016/j.foodres.2014.09.024] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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28
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Supercritical carbon dioxide combined with high power ultrasound: An effective method for the pasteurization of coconut water. J Supercrit Fluids 2014. [DOI: 10.1016/j.supflu.2014.06.010] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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29
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Ortuño C, Quiles A, Benedito J. Inactivation kinetics and cell morphology of E. coli and S. cerevisiae treated with ultrasound-assisted supercritical CO2. Food Res Int 2014. [DOI: 10.1016/j.foodres.2014.05.012] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
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30
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Inactivation of Escherichia coli O157:H7 by high pressure carbon dioxide combined with nisin in physiological saline, phosphate-buffered saline and carrot juice. Food Control 2014. [DOI: 10.1016/j.foodcont.2014.01.012] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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Ortuño C, Balaban M, Benedito J. Modelling of the inactivation kinetics of Escherichia coli, Saccharomyces cerevisiae and pectin methylesterase in orange juice treated with ultrasonic-assisted supercritical carbon dioxide. J Supercrit Fluids 2014. [DOI: 10.1016/j.supflu.2014.03.004] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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Leitgeb M, Čolnik M, Primožič M, Zalar P, Cimerman NG, Knez Ž. Activity of cellulase and α-amylase from Hortaea werneckii after cell treatment with supercritical carbon dioxide. J Supercrit Fluids 2013. [DOI: 10.1016/j.supflu.2013.03.029] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Ortuño C, Martínez-Pastor MT, Mulet A, Benedito J. Application of high power ultrasound in the supercritical carbon dioxide inactivation of Saccharomyces cerevisiae. Food Res Int 2013. [DOI: 10.1016/j.foodres.2013.01.041] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
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Ortuño C, Martínez-Pastor MT, Mulet A, Benedito J. An ultrasound-enhanced system for microbial inactivation using supercritical carbon dioxide. INNOV FOOD SCI EMERG 2012. [DOI: 10.1016/j.ifset.2012.02.006] [Citation(s) in RCA: 41] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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