What You Need to Know
During fermentation, lactic acid bacteria metabolize sugars in tamarind pulp to produce lactic acid, lowering the pH to 3.5–4.0. The natural pectin (~0.5 % w/w) and organic acids (tartaric, citric) contribute to the viscosity and acidity of the brine, stabilizing the product. Salt at 2–3 % (w/w) suppresses spoilage organisms while permitting beneficial microbes to thrive.
The Science
Primary Reaction
Lactic acid fermentation of sugars to lactic acid