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Physical and chemical properties of L-malic acid

 Malic acid, also known as 2-hydroxysuccinic acid, has two stereoisomers due to an asymmetric carbon atom in the molecule. In nature, it exists in three forms, namely D-malic acid, L-malic acid and its mixture DL-malic acid. White crystal or crystalline powder, strong hygroscopicity, easily soluble in water and ethanol. Has a particularly pleasant sour taste. Malic acid is mainly used in the food and pharmaceutical industries.

L-malic acid product use

【Uses】 Used in the manufacture of esters; used in complexing agents and flavoring agents. According to the provisions of my country's GB 2760-90, it can be used in all kinds of food. As a sour agent, it can be used instead of citric acid (about 80%), especially for jelly and fruit-based foods. This product has the function of maintaining the color of natural fruit, and can also be used as an extraction aid for pectin, an agent for promoting yeast growth, for formulating salt-free soy sauce and vinegar, improving the taste of pickles, and an emulsion stabilizer for margarine, mayonnaise, etc. . Widely used in various preservatives, seasonings and other compound additives.

(1) Food industry: It is used to process and prepare beverages, dew, fruit juice, and can also be used in the manufacture of candy, jam, etc. It has antibacterial and antiseptic effects on food. It can also be used to adjust the pH of yoghurt fermentation and remove tartrate in wine making.

(2) Tobacco industry: Malic acid derivatives (such as esters) can improve tobacco flavor.

(3) Pharmaceutical industry: All kinds of tablets and syrups with malic acid can have a fruity taste, which is conducive to absorption and diffusion in the body.

(4) Daily chemical industry: It is a good complexing agent and ester agent. It is used in toothpaste formulation, tooth cleaning tablet formulation, synthetic fragrance formulation, etc. It can also be used as a component of deodorant and detergent.