TITLE:
Survival and Growth Characteristics of Escherichia coli O157:H7 in Pomegranate-Carrot and Pomegranate-Apple Blend Juices
AUTHORS:
Salam A. Ibrahim, Tarik Bor, Danfeng Song, Mehrdad Tajkarimi
KEYWORDS:
Escherichia Coli O157:H7, Pomegranate Juice, Antimicrobial Activity
JOURNAL NAME:
Food and Nutrition Sciences,
Vol.2 No.8,
October
17,
2011
ABSTRACT: Unpasteurized fruit juice has been implicated in outbreaks of Escherichia coli O157:H7 (E. coli O157:H7). Meanwhile, certain fruit, such as pomegranate, contains antimicrobial components. The objective of this study was to investigate the survival and growth characteristics of E. coli O157:H7 on pomegranate juice in laboratory medium and in pomegranate-carrot and pomegranate-apple blend juices at different concentrations. Single strain of E. coli O157:H7 (E0019, H1730, and Cider) was inoculated into brain heart infusion (BHI) broth or a mixture of three strains was inoculated into the blended juices containing pomegranate juice. Our results showed that the addition of pomegranate juice inhibited the growth of tested E. coli O157:H7 in both laboratory medium and blended juices.The antimicrobial activity increased with increased concentrations of pomegranate juice (P