3. Results and discussion
3.1. Development of fermentation
Kombucha fermentation was monitored over a period of
10 days by measuring pH (Fig. 1). The same pattern in changes of
pH, in addition very similar pH values were noticed for the Control,
SC1 and SC2 series of samples. Although the initial pH value of
green tea was lower compared to black tea, the pH values in samples
with green tea were higher during the fermentation process
(Fig. 1b). This difference between the pH values of the substrates
could be the consequence of differences in chemical composition
of black and green tea (Mukhtar & Ahmad, 2000). The pH pattern
during fermentation was as expected and it had the same shape