Compound biological preservative of food and preparation method thereof

Abstract

The invention provides a compound biological preservative of food and a preparation method thereof, and relates to food preservation by microorganism. The biological preservative consists of nisin, wood vinegar and distilled water; and each 100 mL of the compound biological preservative of the food comprises 350 to 400 mg of the nisin, 15 to 25 mL of the wood vinegar, and the balance of the distilled water. The preparation method for the compound biological preservative comprises the following steps: mixing 350 to 400 mg of the nisin and 15 to 25 mL of the wood vinegar, and fixing the volume of the mixture to 100 mL by using the distilled water. The compound biological preservative of the food and the preparation method thereof comprehensively utilize the advantages and the characteristics of the nisin and the wood vinegar, and the nisin and the wood vinegar are compounded into the compound biological preservative of the food with oxidation resistance; and the compound biological preservative of the food has synergism, broad-spectrum preservation and the oxidation resistance; therefore, the compound biological preservative overcomes the defect that the prior food compound preservative is added with chemical agents and does not meet the requirement of the biological preservative basically, keeps the roast smoking flavor of the wood vinegar, and does not destroy the prior flavor of the food.

Description

technical field [0001] The technical scheme of the invention relates to preserving food with microorganisms, specifically a composite biological preservative for food and a preparation method thereof. Background technique [0002] With the improvement of people's living standards, the application of food biological preservatives is more important, and the application of food biological preservatives has also begun to be developed. At present, nisin has been industrially produced and widely used in food as a good food biological preservative. The reason is that nisin is an antibacterial peptide and has a strong ability to inhibit Gram-positive bacteria. , and can be decomposed in the human digestive tract. However, nisin has no inhibitory effect on Gram-negative bacteria and fungi. [0003] In order to expand the antibacterial spectrum of nisin, there have been patent reports of nisin as a food compound biological preservative. CN1336145 has reported a kind of composite bi...

AI Technical Summary

Problems solved by technology

Adding chemical reagents to food compound preservatives does n