To investigate the impact of acids produced during the fermentation of beverages in antioxidant and antibacterial activities, two other samples were also prepared and tested. One was acidified infusion, which the pH of fresh infusion was adjusted to pH of fermented beverage using acetic acid; so that the impact of acetic acid, as the dominant acid produced during fermentation, in biological properties of fermented beverage could be understood. Another sample was neutralized fermented beverage which all acids were neutralized to investigate the impact of active compounds other than acids, in antioxidant and antibacterial properties of samples.