
Phosphoric acid, food grade (often labeled as E338), is a colorless, odorless acid commonly used in the food and beverage industry. Its main properties and applications are:
Properties:
- Chemical formula: H3PO4
- Appearance: Clear, viscous liquid or crystalline solid
- Purity: Food-grade phosphoric acid typically has a purity of 85% when used in liquid form.
- Taste: Provides a sharp, tangy flavor
Applications:
- Acidulant in Beverages: Used in soft drinks, especially colas, to provide a tart flavor and maintain acidity levels.
- Food Preservative: Helps control pH, reducing the growth of bacteria and fungi, thereby increasing shelf life.
- Flavor Enhancer: Adds a sour taste to certain processed foods, such as jams, jellies, and cheeses.
- Nutrient Source: Provides a source of phosphorus, an essential nutrient for the body, which supports energy production, bone health, and cellular functions.
- Leavening Agent: Often used in baking powders to release carbon dioxide for leavening.
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