Possible Interaction: Citric Acid and Green Tea Extract

“ Green tea intake caused a stronger increase in urinary excretion of several citric acid cycle intermediates, which suggests an effect of green tea flavanols on human oxidative energy metabolism and/or biosynthetic pathways.”

“Whereas green tea extract alone showed the most prominent antioxidant effect, combinations of green tea extract with citric acid , β-carotene or NaCl increased lipid oxidation in margarine.”

“When supplemented with 2% citric acid , 0.1% sodium benzoate, and 0.2% ascorbic acid as anti-oxidant, the inactivating activity of GTE was temporarily compromised during earlier times of storage.”

“One-hour exposure of … 1 mg/ml GTP significantly increased the tolerance to oxidants (2 mM H2O2, 4 mM … pH solution (pH 4.0) containing various organic acids (60 mM citric , acetic, propionic or lactic acid) and other stress conditions (… % NaCl, 12 % ethanol and 150 μg/ml crystal violet).”