WASET

	%0 Journal Article
	%A P. Rahnemoon and  M. Sarabi Jamab and  M. Javanmard Dakheli and  A. Bostan
	%D 2016
	%J International Journal of Agricultural and Biosystems Engineering
	%B World Academy of Science, Engineering and Technology
	%I Open Science Index 118, 2016
	%T Phenolic Compounds and Antimicrobial Properties of Pomegranate (Punica granatum) Peel Extracts
	%U https://publications.waset.org/pdf/10005586
	%V 118
	%X In recent years, tendency to use of natural antimicrobial agents in food industry has increased. Pomegranate peels containing phenolic compounds and anti-microbial agents, are counted as valuable source for extraction of these compounds. In this study, the extraction of pomegranate peel extract was carried out at different ethanol/water ratios (40:60, 60:40, and 80:20), temperatures (25, 40, and 55 ˚C), and time durations (20, 24, and 28 h). The extraction yield, phenolic compounds, flavonoids, and anthocyanins were measured. &lrm;Antimicrobial activity of pomegranate peel extracts were determined against some food-borne &lrm;microorganisms such as Salmonella enteritidis, Escherichia coli, Listeria monocytogenes, &lrm;&lrm;Staphylococcus aureus, Aspergillus niger, and Saccharomyces cerevisiae by agar diffusion and MIC methods. Results showed that at ethanol/water ratio 60:40, 25 ˚C and 24 h maximum amount of phenolic compounds &lrm;&rlm;(&lrm;&rlm;&lrm;349.518&lrm;&rlm; &rlm;mg gallic acid&rlm;/&rlm;g dried extract), &lrm;flavonoids (250.124 mg rutin&rlm;/&rlm;g dried extract), anthocyanins (252.047 &lrm;&rlm;&rlm;mg &lrm;cyanidin&rlm;&lrm;3&lrm;&rlm;glucoside&rlm;/&rlm;&lrm;100 g dried extract), and the strongest antimicrobial activity were obtained. &lrm;All extracts&rsquo; antimicrobial activities were demonstrated against every tested &lrm;&lrm;microorganisms&rlm;.&lrm;&rlm; Staphylococcus aureus showed the highest sensitivity among the tested &lrm;&lrm;&lrm;microorganisms.

	%P 646 - 651