Impact of gas micro‐nano‐bubbles on the efficacy of commonly used antimicrobials in the food industry
| Autor: | Phoebe Unger, Arshdeep Singh, Minto Michael, Monipel Babb, Yaeseol Yang, Amninder Singh Sekhon |
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| Rok vydání: | 2020 |
| Předmět: |
food.ingredient
Food industry Colony Count Microbial chemistry.chemical_element Escherichia coli O157 medicine.disease_cause Applied Microbiology and Biotechnology 03 medical and health sciences chemistry.chemical_compound food Anti-Infective Agents Listeria monocytogenes Peracetic acid Chlorine medicine Food Industry Agar Food science 030304 developmental biology 0303 health sciences 030306 microbiology business.industry General Medicine Lactic acid chemistry Food Microbiology Brain heart infusion Pasteurization Gases Citric acid business Biotechnology |
| Zdroj: | Journal of Applied Microbiology. 130:1092-1105 |
| ISSN: | 1365-2672 1364-5072 |
| Popis: | Aim To study the impact of incorporating micro-nano-bubbles (MNBs) in commonly used food antimicrobials (AMs) against Escherichia coli O157:H7 (EC) and Listeria monocytogenes (LM). Methods and results Air, carbon dioxide (CO2 ) and nitrogen (N2 ) were used to incorporate MNBs in city water. AM solution (with or without MNBs) of 9 ml was individually taken into sterile test tubes and mixed with 1 ml of inoculum grown in brain heart infusion (BHI) broth to get the net AM concentrations of 28·4 ppm peracetic acid (PAA), 200 ppm chlorine (Cl2 ), 5·4% citric acid (CA) and 4·5% lactic acid (LA). After treatment time of 1·5 and 3·0 min, 1 ml of sample was neutralized using Dey-Engley neutralizing broth and plated on BHI agar. For EC, Cl2 -CO2 solutions resulted in significantly greater log reductions (5·2 logs) compared to that of Cl2 solutions without MNBs (3·8 logs). For LM, PAA-CO2 solutions resulted in significantly greater log reductions (4·4 logs) compared to that of PAA solutions without MNBs (1·7 logs). Conclusions This study demonstrated that the efficacy of Cl2 and PAA AM solutions could be increased by incorporating CO2 -MNBs against EC and LM in microbiological growth medium. Significance and impact of the study Incorporation of CO2 -MNBs in AM solutions could increase the efficacy of AMs against pathogens on/in food matrices, which should be tested in future research. |
| Databáze: | OpenAIRE |
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