Decontamination of Listeria monocytogenes in king oyster mushrooms (Pleurotus eryngii) by combined treatments with organic acids, nisin, and ultrasound
- Authors
- Yoon, Jae-Hyun; Jeong, Do-Young; Lee, Su-Bin; Choi, Songyi; Jeong, Myeong-in; Lee, Sun-Young; Kim, S.-R.
- Issue Date
- Jun-2021
- Publisher
- Academic Press
- Keywords
- King oyster mushroom; Listeria monocytogenes; Nisin; Organic acid; Ultrasound
- Citation
- LWT, v.144
- Journal Title
- LWT
- Volume
- 144
- URI
- https://scholarworks.bwise.kr/cau/handle/2019.sw.cau/48379
- DOI
- 10.1016/j.lwt.2021.111207
- ISSN
- 0023-6438
1096-1127
- Abstract
- This study was conducted to evaluate the effectiveness of 1–3% organic acids alone or in combination with 0.1% nisin and/or 40 kHz ultrasound (US) on the reduction of Listeria monocytogenes in king oyster mushrooms stored at 25 °C. While L. monocytogenes in king oyster mushrooms was reduced by 3.01 log CFU g−1 after dipping in 3% malic acid (MA) at 25 °C for 30 min, the application of 40 kHz US and 0.1% nisin resulted in 0.30 and 2.25 log-reductions, respectively. When L. monocytogenes in mushrooms was subjected to a combined treatment with 3% MA, 0.1% nisin, and 40 kHz US at 25 °C for 20–30 min, this bacterium dropped to <1.48 log CFU g−1, leading to a significant collapse in the cytoplasm with formation of intracellular ruptures and breakage of cell membranes. Synergistic effect of MA-nisin dipping incorporated with US was observed in a food model. © 2021
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