| Title | Non-thermal plasma-activated water inactivation of food-borne pathogen on fresh produce |
| Authors | Ma, Ruonan Wang, Guomin Tian, Ying Wang, Kaile Zhang, Jue Fang, Jing |
| Affiliation | Peking Univ, Acad Adv Interdisciplinary Studies, Beijing 100871, Peoples R China. Peking Univ, Coll Engn, Beijing 100871, Peoples R China. Peking Univ, Coll Engn, 5 Yiheyuan Rd, Beijing 100871, Peoples R China. |
| Keywords | Non-thermal plasma-activated water Reactive oxygen species Inactivation Staphylococcus aureus Strawberries ESCHERICHIA-COLI O157-H7 BACILLUS-SUBTILIS SPORES LOW-TEMPERATURE PLASMA LISTERIA-MONOCYTOGENES AIR PLASMA MICROBIAL INACTIVATION STAPHYLOCOCCUS-AUREUS SALMONELLA-ENTERICA CHLORINE DIOXIDE DISCHARGE PLASMA |
| Issue Date | 2015 |
| Publisher | JOURNAL OF HAZARDOUS MATERIALS |
| Citation | JOURNAL OF HAZARDOUS MATERIALS.2015,300,643-651. |
| Abstract | Non-thermal plasma has been widely considered to be an effective method for decontamination of foods. Recently, numerous studies report that plasma-activated water (PAW) also has outstanding antibacterial ability. This study presents the first report on the potential of PAW for the inactivation of Staphylococcus aureus (S. aureus) inoculated on strawberries. PAW treatments achieved a reduction of S. aureus ranging from 1.6 to 2.3 log at day-0 storage, while 1.7 to 3.4 log at day-4 storage. The inactivation efficiency depended on the plasma-activated time for PAW generation and PAW-treated time of strawberries inoculated with S. aureus. LIVE/DEAD staining and scanning electron microscopy results confirm that PAW could damage the bacterial cell wall. Moreover, optical emission spectra and oxidation reduction potential results demonstrate the inactivation is mainly attributed to oxidative stress induced by reactive oxygen species in PAW. In addition, no significant change was found in color, firmness and pH of the PAW treated strawberries. Thus, PAW can be a promising alternative to traditional sanitizers applied in the fresh produce industry. (C) 2015 Elsevier B.V. All rights reserved. |
| URI | http://hdl.handle.net/20.500.11897/418403 |
| ISSN | 0304-3894 |
| DOI | 10.1016/j.jhazmat.2015.07.061 |
| Indexed | SCI(E) EI PubMed |
| Appears in Collections: | 前沿交叉学科研究院 工学院 |
