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“Black teas gave higher levels of inhibition than green teas, and removal of tea tannins with gelatin led to the loss of inhibitory activity from all decoctions.”
“These interactions reduced gelatin crystallinity and seemed to be involved in the substantial decrease of the water uptake of films with tannin , irrespective of the glycerol level.”
International journal of biological macromolecules • 2017 | View Paper
“ Gelatin was more reactive than whey proteins to tannic acid as shown by both the astringency method (with ovalbumin as a precipitant) and the tannins determination method (with methylcellulose as a precipitant).”
“The most remarkable effects on wine phenolic composition were produced by bentonite and gelatin , which significantly decreased anthocyanin and tannin concentrations, respectively.”