Abstract

Proanthocyanidins in epicarp and mesocarp tissue of dark-red-fleshed (Rubysweet) and yellow-fleshed (Byrongold) plums remained unchanged during the third stage of fruit development and storage of green and midripe fruit for 6 days at 18 °C, 80% RH. Differences were significant by cultivar and tissue type. Red-fleshed plums and epicarps of both cultivars contained greater quantities of proanthocyanidins. Degree of polymerization, indicated by vanillin/proanthocyanidin ratios, did not increase in either cultivar with maturity or storage time.

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