Karakteristik kimia dan potensi antioksidan dari kombucha berbahan kulit batang faloak (Sterculia quadrifida R.Br)

Faloak (Sterculia quadrifida R.Br) stem bark tea is consumed as herbal drink by some people on Timor Island, East Nusa Tenggara. The potential and bioactive content of faloak can be increased fermenting it into kombucha, considering that there has been no use bark, especially the main substrate in kombucha fermentation. This study aims to examine effects various concentrations (0,8, 1,2, 1,6, 2% (w/v)) chemical characteristics (pH, total acid, phenol, sugar) antioxidant during fermentation process Day 0 14. During 14 days fermentation, was found concentration tea, with best 1.6% (w/v), had a significant effect changes activity, namely pH 2.6, acid 0.62%, sugar 7.15% phenol 467.92 mg/L GAE, flavonoid 4135.14 QE, activity 82.21%. Therefore, used making (w/v) fermented for days.