The Antibacterial Activity of Lemon Juice in laboratory prepared Ice cream

Subject Areas : Food Microbial Contamination

سلطان محمد قاسمی ¹ , هادی کوهساری ² , ابوالفضل فدوی ³

1 - دانش آموخته کارشناسی ارشد علوم وصنایع غذایی، واحد آزادشهر، دانشگاه آزاد اسلامی، آزادشهر، ایران
2 - استادیار گروه میکروبیولوژی، واحد آزادشهر، دانشگاه آزاد اسلامی، آزادشهر، ایران
3 - استادیار گروه علوم وصنایع غذایی، واحد آزادشهر، دانشگاه آزاد اسلامی، آزادشهر، ایران

Received: 2016-01-28 Accepted : 2017-01-27 Published : 2017-04-21

Keywords: Staphylococcus aureus, Ice cream, Escherichia coli, Lemon Juice,

Abstract :

Unpasteurized as traditional ice cream production in Iran is very common due to the increasing use of herbal compounds as inhibitors of microbial growth, this study to examine the antibacterial effects of Lemon juice against Staphylococcus aureus and Escherichia coli in Ice cream prepared in the laboratory.In order to , ice creams containing concentrations of 1,2, 5,10% lemon juice was prepared .The samples were inoculated with bacterial suspension containing 105 cfu/gr . Samples with control samples were stored in the freezer - 20 and during the time of 1, 2, 3, 7, 14 and 21 days antibacterial effects of various concentrations of lemon juice was evaluated by culture-specific .The results showed that in all concentrations, significant difference was observed between the number of bacteria with the control group(P