Abstract
This study was performed to evaluate and compare the antioxidant and antimicrobial activities of various berry juices (cherry, grape, blueberry, aronia, cranberry, and raspberry). The cherry, aronia, and cranberry juices included higher levels of total polyphenol than the other berry juices. The DPPH radical scavenging activity of various berry juices increased according to the juices concentration. The scavenging activity of DPPH radicals by the aronia, cranberry, and raspberry juices was higher than those of other samples and was in the following order: aronia > cranberry > raspberry. The FRAP values of 100% aronia juice was the highest among the samples, which was more than five times higher than grape juice at a concentration of 25%. The cranberry and raspberry juices exhibited a strong inhibitory effect against important food-borne bacteria, and in general, the berry juices inhibited the growth of Gram-negative bacteria more than that of Gram-positive bacteria. The cranberry and raspberry juices exhibited high antimicrobial activities against important food-borne bacteria at a concentration of 100% and 75%, however, they did not affect food-borne bacteria at a concentration below 10%. These results suggest that aronia, cranberry, and raspberry may be used effectively as natural additives and as
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