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Hydroponic ginseng (HG) is cultivated using only nutrients and water under constant environmental conditions and is more beneficial than soil-cultured ginseng (SG). This study aimed to determine the physicochemical properties, antioxidant activity, and sensory properties of HG-supplemented yogurt to develop high-value yogurt. HG (0.1%, 0.5%, and 1.0%) was added to yogurt formulations and fermented with a 0.1% starter. Antioxidant activities were determined using the 2,2-diphenyl-1-picryl-hydrazyl (DPPH), 2-azinobis-(3-ethylbenzothiazoline-6-sulfonic acid) diammonium salt, reducing power, and ferric reducing antioxidant power assays. Semi-trained panelists performed a quantitative descriptive analysis for sensory evaluation. The number of starter cells increased more rapidly in ginseng extract-fortified yogurt than in the control group, shortening fermentation time. Regarding antioxidant assays, all HG extract-fortified yogurts showed higher antioxidant activity than the control group. In particular, the HG (0.5%) group showed better results than the SG group in the DPPH and reducing power assays, although the difference was not significant. The sensory scores of color, flavor, texture, taste, and overall acceptance of 0.5% HG-supplemented yogurt did not differ significantly from those of non-supplemented yogurt (control). This suggests that HG can be used in high-value dairy products as a supplement with bioactive properties for health in the food industry.

Antioxidant Effect and Sensory Evaluation of Yogurt Supplemented with Hydroponic Ginseng Root Extract