Publish Time: 2022-12-19 Origin: Site
Natural citric acid is widely distributed in nature and is found in the fruits of plants such as lemons, citrus, and pineapples and in the bones, muscles, and blood of animals. Synthetic citric acid is produced by fermenting sugar, molasses, starch, grapes, and other sugary substances, and can be divided into two types: anhydrous and hydrate. Pure citric acid is a colorless and transparent crystal or white powder, odorless and with an attractive sour taste.
The following is a list of contents:
Characteristics of citric acid
Applications of citric acid
Storage regulation of citric acid
Firstly, citric acid is very soluble in water and ethanol as well as in ether, and its solubility in water is very high. In addition, citric acid and its derivatives in propylene glycol solution are also soluble in oils and fats. Due to the good solubility in water and fat, citric acid is easily and evenly dispersed in all kinds of food. Secondly, citric acid is pure, mild, and aromatic, the most palatable of all organic acids, and can be mixed with a variety of spices to produce a refreshing acidity, so it is used in many foods. At the same time, due to the weak acidity of citric acid, it can inhibit bacterial reproduction within a certain pH range, and can also play a preservative role.
Thirdly, citric acid has strong chelating power. Citric acid can form three forms of salts because it contains three carboxyl groups, but most of the salts are insoluble or insoluble in water, except for the alkali metal salts. It also has the peculiar property of being more soluble in cold water than in hot water. Fourthly, citric acid can be mixed with alkalis or salts to form buffers, such as with disodium hydrogen phosphate in different proportions to obtain a variety of buffers. Fifthly, citric acid has little toxicity. Citric acid is an important intermediate in the tricarboxylic acid cycle in the human body and causes no harm to the human body.
Firstly, it can be used as a food additive. Citric acid is an organic acid with a strong acidity, which is high in citrus, pineapple, lemon, and other fruits and has a good taste. It can be added to beverages and food in appropriate amounts, which has the effect of enhancing appetite and improving taste; secondly, it can be used in daily chemical products: citric acid can speed up the body's metabolism and promote the renewal of skin keratin, and can be used in daily chemical products, which can help whiten and make the skin more lustrous; thirdly, it can be used as a preservative, citric acid belongs to the acid category and is more acidic, and the acidic environment formed by it can inhibit the growth of bacteria, the acidic environment it creates can inhibit the growth of bacteria, thus preventing food spoilage and achieving a preservative effect. Citric acid can also inhibit the coagulation of calcium in the blood, softening blood vessels and preventing arteriosclerosis.
Citric acid should be stored in a closed and dry environment, away from fire and heat sources, forbidden to be stacked in the open air, and strictly waterproof, moisture-proof, and sun-proof. Citric acid should be packed in woven bags lined with plastic bags, or in kraft paper bags. It should be stored in sealed bags and protected from heat and moisture during storage and transportation. Store and transport following general chemical regulations. Do not mix with alkaline substances to avoid affecting the quality of citric acid.
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