期刊
FOOD CONTROL
卷 50, 期 -, 页码 491-496出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.foodcont.2014.09.036
关键词
Sanitation; Ultraviolet; Recycling; Penetration depth; Lettuce
资金
- Fondazioni in Rete per la Ricerca Agroalimentare, AGER - Agroalimentare e Ricerca [2010 2370]
The decontamination effect of UV-C light at increasing fluence up to 1.2 kJ/m(2) was studied with reference to natural microflora and inoculated pathogens in lamb's lettuce wash water. UV-C light dose of 0.4 kJ/m(2) allowed to inactivate most of the native microflora and to achieve more than 5- Log-reductions in inoculated microorganisms (Salmonella enterica, Listeria monocytogenes and Escherichia coli). In multiple washing cycles up to 5, UV-C light treatment allowed to obtain more than 3-log reductions in native microflora in wash water. Spectral properties indicated that, independently on the number of recycling cycles, a considerable amount of UV-C light can penetrate wash water if its thickness is lower than circa 1 cm. (C) 2014 Elsevier Ltd. All rights reserved.
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