granular potassium salt also known as "wine stabilizer", produces sorbic acid when added to wine. potassium sorbate

potassium sorbate e202 food additives chemical dish glass powder white pellets plate oblong granules salt sorbic acid preservative shelf life pharmaceutical spoon compound number addition prevent mold wine stabilizer microbes chemistry substance science replacement paraben fermentation agent inorganic soluble texture additive pathogenic antimicrobial industrial ingredient granular produces additi top view wine