Journal
FOOD CHEMISTRY
Volume 235, Issue -, Pages 145-153Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.foodchem.2017.04.143
Keywords
Anti-swarming; Citrobacter rodentium; Pomegranate; Ellagitannins; Drying methods; Phenolic and antioxidant activity
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During processing of ready-to-eat fresh fruits, large amounts of peel and seeds are discarded as waste, Pomegranate (Punicagranatum) peels contain high amounts of bioactive compounds which inhibit migration of Salmonella on wet surfaces. The metabolic distribution of bioactives in pomegranate peel, inner membrane, and edible aril portion was investigated under three different drying conditions along with the anti-swarming activity against Citrobacter rodentium. Based on the multivariate analysis, 29 metabolites discriminated the pomegranate peel, inner membrane, and edible aril portion, as well as the three different drying methods. Punicalagins (similar to 38.6-50.3 mg/g) were detected in higher quantities in all fractions as compared to ellagic acid (similar to 0.1-3.2 mg/g) and punicalins (similar to 0-2.4 mg/g). The bioactivity (antioxidant, anti-swarming) and phenolics content was significantly higher in peels than the edible aril portion. Natural anti-swarming agents from food waste may have promising potential for controlling food borne pathogens. Published by Elsevier Ltd.
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