Unveiling Port wine vinegar: A comprehensive study on chemical and sensory profile

Once merely a culinary staple, vinegar has evolved into a multifaceted ingredient valued for its flavor enhancement and potential health benefits. Port wine vinegar from the Iberian Peninsula stands out for its rich nutrient profile and unique sensory characteristics. This study provides a comprehensive descriptive analysis of the chemical and sensory properties of Port wine vinegar alongside other types of wine vinegar, including white wine, red wine, and balsamic vinegar. The analysis highlights the distinctive characteristics of each vinegar type based on their chemical composition and sensory profiles. Chemical analyses encompassed pH levels, acetic acid concentrations, ethanol content, total phenolic content, antioxidant activity, colorimetric parameters, and phenolic composition. Sensory evaluations were conducted to discern distinctive flavor profiles. Port wine vinegar's reddish-brown hue and nuanced flavor are vital features described in this study, attributed to its aging process in oak barrels. Chemical analyses described the relatively low pH, moderate acetic acid concentration, and notable phenolic content of Port wine vinegar, including epigallocatechin and catechin gallate. Aging was associated with higher polyphenol concentrations across the samples. These phenolic compounds, known for their antioxidant properties, contribute to the potential health benefits of vinegar consumption.