Combined antimicrobial effect of high pressure processing and ethyl lauroyl arginate (LAE)-containing films and its application in coconut water preservation |
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| Affiliation: | 1. Key Laboratory of Dairy Science, Ministry of Education, College of Food Science, Northeast Agricultural University, Harbin, 150030, PR China;2. College of Life Sciences, Northeast Agricultural University, Harbin, 150030, PR China;3. School of Industrial Technology, Mongolian University of Science and Technology, Baga toiruu 34, Sukhbaatar District Ulaanbaatar, 14191, Mongolia;1. International Center of Excellence in Seafood Science and Innovation (ICE-SSI), Faculty of Agro-Industry, Prince of Songkla University, Hat Yai, Songkhla, 90110, Thailand;2. Key Laboratory of Health Risk Factors for Seafood of Zhejiang Province, College of Food Science and Pharmacy, Zhejiang Ocean University, Zhoushan, 316022, China;3. Department of Food and Nutrition, Kyung Hee University, Seoul, 02447, Republic of Korea;1. Department of Postharvest Science of Fresh Produce, Institute for Postharvest and Food Sciences, Agricultural Research Organization (ARO), Volcani Center, Rishon LeZion, 7505101, Israel;2. Robert H. Smith Faculty of Agriculture, Food, and Environment, The Hebrew University of Jerusalem, Rehovot, 76100, Israel;3. Department of Food Quality & Safety, Institute for Postharvest and Food Sciences, Agricultural Research Organization (ARO), Volcani Center, Rishon LeZion, 7505101, Israel;1. Department of Food Technology, Faculty of Science, Chulalongkorn University, Bangkok, 10330, Thailand;2. School of Agricultural Resources, Chulalongkorn University, Bangkok, 10330, Thailand |
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| Abstract: | The combined effect of high pressure processing (HPP) and antimicrobial film enriched with ethyl lauroyl arginate (LAE) was investigated. More than 5 log10 CFU/mL reduction of Staphylococcus aureus and Escherichia coli O157:H7 were achieved at 300 MPa HPP combined with 2.0% LAE-PLA film. HPP combined with LAE-PLA film showed a synergistic inactivation against S. aureus, probably because it severely damaged the cell membrane and eliminated pressure-induced sublethal injuries of S. aureus. However, no synergistic effect between HPP and LAE-PLA film was found on E. coli O157:H7. Furthermore, coconut water under 300 MPa HPP with 2.0% LAE-PLA treatment showed a longer shelf life than that of 500 MPa HPP alone. These results indicated that antimicrobial films could serve as a promising hurdle technology to lower the processing intensity of HPP while maintaining safety. |
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| Keywords: | High pressure processing Antimicrobial films Ethyl lauroyl arginate Coconut water |
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