Antioxidants are substances that block the adverse effects of oxygen. It is a class of substances that can help trap and neutralize free radicals, thereby removing free radical damage to the human body. Antioxidants are food additives that can prevent or delay the oxidation of food, improve the stability of food and extend the storage period. The correct use of antioxidants can not only extend the storage period and shelf life of food, bring good economic benefits to producers and consumers, but also bring better food safety to consumers.
Used as a multi-performance additive in petroleum industry. Also used in barium grease and oil refining. Beets make sugar, medicine, and are also raw materials for plastics and rayon, and can be used as resin stabilizers. It is also used in the manufacture of organic synthesis and other barium salts, in the softening of water, and in the glass and enamel industries
Citric acid is an important organic acid, also known as citric acid, colorless crystal, often contains a molecule of crystalline water, odorless, has a strong sour taste, easily soluble in water. Its calcium salts are more soluble in cold water than hot water, and this property is often used to identify and separate citric acid. Anhydrous citric acid can be obtained by controlling the appropriate temperature during crystallization. It has many uses in industry, food industry, makeup industry and so on.
Sodium bisulfite, white crystalline powder. It smells of sulfur dioxide. It has an unpleasant taste. Exposure to the air loses part of the sulfur dioxide, while oxidizing to sulfate. Soluble in 3.5 parts cold water, 2 parts boiling water, about 70 parts ethanol, its aqueous solution is acidic. Melting point decomposition. English alias :Sodium hydrogen sulfite; Sodium Bisulphite; sodium hydrogen sulfate; sodium sulfite.
Sodium metabisulfite is white or yellow crystalline powder or small crystals, with a strong SO2 odor, specific gravity 1.4, soluble in water, aqueous solution is acidic, and strong acid contact releases SO2 and generates the corresponding salts, long in the air, it is oxidized to Na2S2O6, so the product can not last long. Above 150 degrees Celsius, it breaks down SO2.
It is used for trace analysis of tellurium and niobium and preparation of developer, and also used as reducing agent. Used for artificial fiber stabilizer, fabric bleaching agent, photographic developer, dye bleaching deoxidizer, fragrance and dye reducing agent, lignin removal agent for papermaking. Used as a common analytical reagent and photoresistor material. Reductive bleaching agent, which has bleaching effect on food and strong inhibition of oxidase in plant food. Food industry used as bleach, preservative, loosening agent, antioxidant. It is used to make cellulose sulfite ester, sodium thiosulfate, organic chemicals, bleached fabrics, etc., and also used as reducing agent, preservative, dechlorination agent.
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