the hand made juice sample. The overall contribution of anthocyanins
to the chromatographic profiles of the commercial juice samples
is small, but not unexpected since pomegranate anthocyanins
have been shown to readily degrade during processing and storage
(Alighourchi & Barzegar, 2009; Pérez-Vicente et al., 2004). The
three remaining peaks eluting from 3.58 to 4.01 min were tentatively
identified as punicalin isomers (kmax 378 nm). The relative
intensities of these three peaks among the commercial juice samples
varied, indicative of differences in manufacturing processes or
the cultivars used. In contrast, the most similar chromatographic
profiles were shared between the POM Wonderful 100% juice
(Fig. 3C) and pomegranate marc extract, two products that were
produced by the same manufacturer using the same pomegranate
variety (c.v. Wonderful).