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Quality Evaluation of High-Polyphenol Vinegars Produced from Various Romanian Plum Cultivars
Maria-Cristina Todașcă1, Cătălina-Beatrice Poteraș1, Teodora-Alexandra Iordache2
1Faculty of Chemical Engineering and Biotechnology, National University of Science and Technology Politehnica Bucharest, 1-7 Gh. Polizu Street, 011061 Bucharest, Romania.
Abstract:
Plum vinegar represents a functional food product valued for its potential health benefits, largely attributed to its polyphenolic content. This study investigates the quality parameters of vinegars produced from five Romanian plum varieties (Centenar, Agent, Andreea, Anna Spath and Romanian Vanata), focusing on their physicochemical and phenolic profiles. Analyses included pH, total acidity, colorimetric evaluation, total polyphenolic content (TPC), antioxidant activity, and ATR-FTIR and 1H-NMR spectroscopy. The vinegars exhibited pH values ranging from 3.2 to 3.7 and TPC values between 250 and 350 mg GAE/L during fermentation, with higher concentrations (up to 400 mg GAE/L) recorded post-aging. These findings support the potential of Romanian plum varieties as valuable raw materials for producing high-quality, polyphenol-rich fruit vinegars.
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