Tzulker, R., Migal Galilee Technology Center, P.O. Box 831, Kiryat Shmona, 11016, Israel
Glazer, I., Migal Galilee Technology Center, P.O. Box 831, Kiryat Shmona, 11016, Israel
Bar-Ilan, I., Migal Galilee Technology Center, P.O. Box 831, Kiryat Shmona, 11016, Israel, Tel-Hai Academic College, Upper Galilee, 10120, Israel
Holland, D., Institute of Plant Sciences, Agricultural Research Organization, Newe Ya'ar Research Center, Ramat Yishay 30095, Israel
Aviram, M., Lipid Research Laboratory, Technion - Israel Institute of Technology, Rappaport Faculty of Medicine, Haifa, 32000, Israel
Amir, R., Migal Galilee Technology Center, P.O. Box 831, Kiryat Shmona, 11016, Israel

Pomegranate juice is well known for its health beneficial compounds, which can be attributed to its high level of antioxidant activity and total polyphenol content. Our objective was to study the relationships between antioxidant activity, total polyphenol content, total anthocyanins content, and the levels of four major hydrolyzable tannins in four different juices/homogenates prepared from different sections of the fruit. To this end, 29 different accessions were tested. The results showed that the antioxidant activity in aril juice correlated significantly to the total polyphenol and anthocyanin contents. However, the homogenates prepared from the whole fruit exhibited an approximately 20-fold higher antioxidant activity than the level found in the aril juice. Unlike the arils, the antioxidant level in the homogenates correlated significantly to the content of the four hydrolyzable tannins in which punicalagin is predominant, while no correlation was found to the level of anthocyanins. © 2007 American Chemical Society.