*2.3. pH and Total Acidity Determination*

The pH of kombucha tea was measured using an electronic pH meter (Denver Instruments, Bohemia, NY, USA). The total acidity of kombucha tea was measured according to the procedure of Srihari and Satyanarayana [13]. Kombucha tea was titrated with 0.1 M NaOH. The volume of the NaOH solution was calculated in terms of grams of acetic acid per liter of the sample.
