Potassium Sorbate And TBHQ And Citric Acid

Potassium sorbate is the potassium salt of sorbic acid, a naturally occurring compound found in some plants. It is manufactured synthetically for food use. TBHQ (tertiary butylhydroquinone) is a synthetic antioxidant. Citric acid is a weak organic acid found naturally in citrus fruits, but is typically produced commercially through the fermentation of sugar.

These ingredients are often used together as preservatives to prevent spoilage and extend shelf life. Potassium sorbate inhibits mold and yeast growth, while TBHQ prevents fats and oils from becoming rancid. Citric acid can also act as a preservative by lowering pH and may contribute to flavor.

Potassium sorbate, TBHQ, and citric acid are all approved for use in food by the FDA. Potassium sorbate is generally recognized as safe (GRAS). TBHQ is an approved food additive. Citric acid is GRAS. International bodies like JECFA and EFSA have evaluated these ingredients. While generally considered safe at typical levels, some studies have explored potential effects of high doses of TBHQ, though evidence is mixed and not conclusive at dietary levels.