The Effect of RF Treatment Combined with Nisin Against Alicyclobacillus Spores in Kiwi Fruit Juice

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• 作者：Jiang Bo Zhang ; Zhen Peng Gao ; Xing Hua Liu ; Tian Li Yue…
• 关键词：Alicyclobacillus ; Kiwi fruit juice ; Nisin ; Radio frequency ; Response surface modeling
• 刊名：Food and Bioprocess Technology
• 出版年：2017
• 出版时间：February 2017
• 年：2017
• 卷：10
• 期：2
• 页码：340-348
• 全文大小：
• 刊物类别：Chemistry and Materials Science
• 刊物主题：Food Science; Chemistry/Food Science, general; Agriculture; Biotechnology;
• 出版者：Springer US
• ISSN：1935-5149
• 卷排序：10

文摘

In the present study, the efficiency of the treatment of radio frequency (RF) combined with nisin against the spores of three strains of Alicyclobacillus from two species was examined with the response surface methods (RSM). The results showed that the combination of RF and nisin was effective on killing Alicyclobacillus acidoterrestris and Alicyclobacillus contaminans spores in kiwi fruit juice. The killing effect increased with the increase of temperature, holding time, and nisin concentration, but the increment was not significant at high levels of temperature and nisin concentration. The killing effect between A. acidoterrestris and A. contaminans strains was different in kiwi fruit juice. The strain with the highest killing effect was DSM 17975T, followed by DSM 3923T and C-ZJB-12-33. The reduction of spore number of DSM 17975T at the central design points of RSM was about 2.4. Under experimental conditions, nisin showed hardly any effect on killing DSM 17975T spores when combined with RF.