1. Citric acid is mainly used as sour agent, solubilizer, buffer, antioxidant, deodorant, flavor enhancer, gelling agent, toner, etc. In addition, citric acid also has the functions of inhibiting bacteria, protecting color, improving flavor, and promoting the conversion of sucrose.
2. Citric acid also has a chelating effect and can remove certain harmful metals. Citric acid can prevent oxidation caused by enzyme catalysis and metal catalysis, thereby preventing quick-frozen fruits from changing color and smell.
3. In terms of food additives, it is mainly used in carbonated drinks, fruit drinks, lactic acid drinks and other refreshing drinks and pickled products. The demand for them changes due to seasonal climate changes. Citric acid accounts for about 2/3 of the total consumption of sour agents.
4. Adding citric acid to canned fruits can maintain or improve the flavor of the fruits in the collection, increase the acidity of some fruits with low acidity during canning, weaken the heat resistance of microorganisms and inhibit their growth. Prevents bacterial expansion and damage that often occurs with canned fruits with low acidity.
Extended information:
The role of citric acid in the chemical industry and textile industry
Citric acid can be used as a reagent for chemical analysis and experimental reagents in chemical technology. , chromatographic analysis reagents and biochemical reagents; used as complexing agent, masking agent; used to prepare buffer solutions. Using citric acid or citrate as a builder can improve the performance of washing products;
it can quickly precipitate metal ions, prevent contaminants from reattaching to the fabric, and maintain the necessary alkalinity for washing; Disperses and suspends dirt and ash; improves the performance of surfactants and is an excellent chelating agent; can be used as a reagent to test the acid resistance of building ceramic tiles.
Formaldehyde pollution in clothing is already a very sensitive issue. Citric acid and modified citric acid can be used to make a formaldehyde-free anti-wrinkle finishing agent for the anti-wrinkle finishing of pure cotton fabrics. It not only has good anti-wrinkle effect, but also has low cost.
Reference: Baidu Encyclopedia--Citric Acid