Food preservative

Abstract

The invention discloses a food preservative. The food preservative is used as a food additive, and includes natamycin and an acidic material. A base material of the food preservative is composed of the natamycin and the acidic material and the mass percent ratio between the natamycin and the acidic material is (0.0005-2.333):1. The food preservative provided by the invention has the characteristics of good solubility in ethyl alcohol, high stability, a wide antimicrobial spectrum and high activity. Meanwhile, the food preservative is easy to use and effectively inhibits various kinds of microorganisms like mould, bacteria, and yeast, so as to guarantee food quality and prevent food from growing mould, meet the requirements of food preservation and freshness maintenance and meet the demands of people on food safety.

Description

technical field [0001] The invention relates to a food additive, in particular to a food fresh-keeping agent. Background technique [0002] Natamycin is a natural, broad-spectrum, efficient and safe inhibitor of filamentous fungi such as yeast and mold. It can not only inhibit fungi, but also prevent the production of mycotoxins. Natamycin is harmless to the human body, it is difficult to be absorbed by the human digestive tract, and it is difficult for microorganisms to develop resistance to it. At the same time, because of its low solubility, it is usually used for surface preservation of food. Natamycin is currently the The only anti-fungal microbial preservative in the world. [0003] Natamycin is usually prepared with an alcohol solution to spray or soak the surface of food. However, natamycin is insoluble in ethanol and water, and can only be prepared as a suspension during use, and it must be stirred frequently during use. This process is usually difficult to contro...

AI Technical Summary

Problems solved by technology

[0003] Natamycin is usually prepared with an alcohol solution to spray or soak the surface of food. However, natamycin is insoluble in ethanol and water and can only be prepared as a suspension during use. It must be stirred frequently during use.

This process is usually difficult to control. Natamycin is prone to sedimentation during use, resulting in high concentration in the lower layer, and even only alcohol in the upper layer.

Then there are two extreme situations, either the natamycin is too large and the preservative exceeds the standard; or the amount is too small to achieve the antiseptic effect

[0004] Some companies in the market use propylene glycol and glycerol to pre-dissolve natamycin to prepare "liquid natamycin", and then dissolve this product in alcohol. Although the above-mentioned problem of difficult dissolution can be solved, the product has poor stability. Fast failure when exposed to light

The defect of natamycin's insufficient stability greatly limits its application space, which has plagued preservative manufacturing enterprises for a long time