RT Journal Article T1 Physicochemical, antioxidant activity, and sensory properties of grape juice-herbs extract based isotonic beverages A1 Bendaali, Yasmina A1 Escott, Carlos A1 Vaquero Yuste, Christian A1 González, Carmen A1 Morata, Antonio AB The aim of this work was to develop isotonic drinks free of chemical additives and based on grape juice as a source of carbohydrates, pigments and rich in antioxidants, mixed with herb and spice extracts to improve the taste of the drinks. The color evolution, pH and acidity, sugar content, anthocyanin content, antioxidant activity and sensory properties were analyzed. The results of color evolution demonstrated an increase in color intensity in all samples over four weeks. The determination of anthocyanins revealed the presence of non-acylated and acylated anthocyanins, with malvidin pigments predominating (71.75–73.05%). Antioxidant activity values ranged from 3.97 to 4.92 μmol TE/mL and were positively correlated with anthocyanin content, however anthocyanins were negatively correlated with pH. Sensory evaluation showed that the combination of grape juice with herb and spice extracts promoted the use of natural sources to enrich sports drinks with antioxidants and improve their sensory profile. PB Elsevier SN 1878-450X YR 2024 FD 2024-08-16 LK https://hdl.handle.net/20.500.14352/107975 UL https://hdl.handle.net/20.500.14352/107975 LA eng NO Yasmina Bendaali, Carlos Escott, Cristian Vaquero, Carmen González, Antonio Morata, Physicochemical, antioxidant activity, and sensory properties of grape juice-herbs extract based isotonic beverages, International Journal of Gastronomy and Food Science, Volume 37, 2024, 100986, https://doi.org/10.1016/j.ijgfs.2024.100986. NO Ministerio de Ciencia e Innovación (España) DS Docta Complutense RD 30 mar 2026