Calcium Propionate, also known as calcium propionate salt, is a high-quality food additive that is widely used in the food and feed industries. The following is a detailed introduction to calcium propionate:
1. Basic properties
Calcium propionate (e282) is a white or slightly yellow crystalline powder, odorless or with a slight smell of propionic acid, with a melting point of 161°C and easy to deliquesce in humid air. It is soluble in water, slightly soluble in alcohol, insoluble in ethers, sensitive to light and heat, and decomposes into calcium carbonate at 330~340°C. Under acidic conditions, calcium propionate decomposes into propionic acid.
2. Production method
Calcium propionate (e282) is mainly produced by the reaction of propionic acid with calcium hydroxide or calcium carbonate. In industry, calcium hydroxide is generally used as the raw material, which is adjusted into a suspension and then propionic acid is added for reaction. The reaction temperature is maintained at 70~100°C, the reaction time is 2~3 hours, and the pH value at the end of the reaction is controlled at about 7~8. After decolorization, pressure concentration, filtration, washing, drying and other steps, the finished calcium propionate can be obtained. In addition, there are methods for preparing calcium propionate using eggshells or crustacean biological resources as calcium sources. These methods have high yields and purities and have practical guiding significance for industrial production.
3. Calcium Propionate Application Range
Food preservatives: Calcium propionate is mainly used as a preservative in the food industry to extend the shelf life of food. It has a good anti-fungal effect on molds, aerobic spore-producing bacteria, and Gram-negative bacilli, and is harmless to yeasts. Therefore, calcium propionate is widely used in bread, pastries, soy sauce, bean products, jams and canned foods for mold and corrosion prevention. Calculated in terms of propionic acid, the maximum usage of calcium propionate in wet raw noodle products (such as sliced noodles and wonton wrappers) is 0.25g/kg; the maximum usage in bread, vinegar, soy sauce, pastries and bean products is 2.5g/kg.
Feed mold inhibitor: Calcium propionate can also be used as a feed mold inhibitor. Adding an appropriate amount of calcium propionate during feed processing can reduce the pH value in the intestines of livestock and poultry, play a role in inhibiting pathogenic microorganisms, and thus prevent the occurrence and spread of livestock and poultry diseases. At the same time, calcium propionate has no toxic effects on animals, no residues, no accumulation, no drug resistance, and no side effects. It is a safe and efficient feed additive. In addition, calcium propionate has low volatility, high temperature resistance, good animal adaptability, and is suitable for use in a variety of feeds. If combined with other inorganic salts, it can also increase the appetite of livestock and increase the milk production of dairy cows.
Other applications: In addition to being used as a food and feed additive, calcium propionate can also be used in the pharmaceutical field to make liquid, powder, paste and other dosage forms, and it also has a good therapeutic effect on skin diseases caused by mold. In addition, calcium propionate can also be used as an additive for toothpaste and cosmetics, playing a good preservative role.
4. Precautions for use
When using calcium propionate, it is necessary to select the appropriate amount and method of addition according to different application fields and conditions of use to give full play to its antiseptic, anti-mildew and fresh-keeping effects.
Care should be taken to avoid excessive use or adding calcium propionate to foods that are not suitable for use to avoid potential risks.
5. Market status and development trend
As a new type of food additive and feed antifungal agent, calcium propionate has a wide range of application prospects in the market. With people’s increasing attention to food safety and health, the requirements for food preservatives are also getting higher and higher. As a non-toxic, safe and efficient preservative, calcium propionate meets the development needs of the modern food industry. At the same time, with the advancement of science and technology and the continuous improvement of production processes, the production cost of calcium propionate will be further reduced, the product quality will be further improved, and its competitiveness in the market will continue to increase. The price of propionic acid raw materials has been increasing recently. If you have any purchasing needs, please contact us in time and we will provide you with the best quality products.
FAQ
What is Calcium Propionate (E282) and how does it work as a food preservative?
Calcium Propionate (E282) is a food additive and preservative composed of the calcium salt of propionic acid. Under acidic conditions, it decomposes into propionic acid, providing targeted antimicrobial action to extend product shelf life:
Antimicrobial Action: Inhibits the growth of molds, aerobic spore-producing bacteria, and Gram-negative bacilli, while remaining harmless to baker’s yeast.
Primary Food Uses: Widely added to bread, pastries, soy sauce, bean products, jams, canned foods, and fresh noodle products (like wonton wrappers).
Permitted Usage Limits: Calculated as propionic acid, maximum permitted usage is 0.25 g/kg for wet raw noodle products and 2.5 g/kg for bread, pastries, vinegar, soy sauce, and bean products.
Physical & Chemical Properties: A white to off-white crystalline powder with a melting point of 161°C. It is water-soluble, heat-tolerant, and decomposes into calcium carbonate at 330–340°C.
What are the applications of Calcium Propionate outside of human food production?
Beyond its primary role in food preservation, Calcium Propionate (E282) is utilized across the animal feed, pharmaceutical, and personal care sectors:
Animal Feed Mold Inhibitor: Lowers intestinal pH in livestock and poultry, suppressing pathogenic bacteria and preventing foodborne diseases. It leaves no chemical residue, generates no drug resistance, and can boost dairy cow milk yield when paired with inorganic salts.
Pharmaceutical Formulations: Formulated into topical liquids, powders, and pastes to treat skin conditions caused by fungal or mold infections.
Personal Care Products: Serves as a safe, non-toxic preservative in daily cosmetics and toothpaste formulas to prevent bacterial contamination.
