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  • Sorbic acid is a naturally occurring organic compound widely used as a preservative in the food industry. Known for its ability to inhibit the growth of mold, yeast, and some bacteria, it helps extend the shelf life of various food products. Discovered in the 19th century, sorbic acid has become a popular food additive due to its effectiveness and relatively low toxicity.

  • Potassium sorbate, also known as potassium 2,4-hexadienoate, is the potassium salt of sorbic acid, and its molecular formula is C6H7O2K. White to light yellow scale-like crystals, crystal particles or crystal powder, odorless or slightly odorous, easy to absorb moisture when exposed to air for a long time, oxidative decomposition and discoloration.
  • Calcium propionate is an acid-type food preservative. Under acidic conditions, it produces free propionic acid, which has antibacterial effect. Its antibacterial effect is affected by the pH value of the environment, and the inhibitory effect on mold is the best when the pH value is 5.0.
  • Natamycin is a cream or cream yellow crystalline powder. It is an odorless and tasteless, low-dose and highly safe food preservative. Natamycin is a white to milky white, odourless and tasteless crystalline powder produced by controlled fermentation of Streptomyces nata, usually in the form of an enol structure.

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