Natural preservative with leaf mustard leaves and camphor tree leaves used as raw materials, as well as preparation method and application of natural preservative

Abstract

The invention discloses a natural preservative with leaf mustard leaves and camphor tree leaves used as raw materials, and a preparation method of the natural preservative. The natural preservative is an extract from the leaf mustard leaves and the camphor tree leaves, an ultrasonic-assisted method is used, an alcohol substance is used as an extracting organic solvent, the purple or scarlet leaf mustard leaves and camphor tree leaves are dried, crushed, sieved and then placed into an extracting vessel, an acidic alcohol solution is added, the leaves are soaked and extracted, and the extract is obtained after concentration. The extract can suppress growth and propagation of escherichia coli, staphylococcus aureus, bacillus subtilis and mould and can be used as the preservative for food and fodder. The preservative is made of natural ingredients completely, free of toxic and side effects and widely applicable to the food and fodder field.

Description

technical field

[0001] The invention belongs to the field of natural phytochemistry and Chinese herbal medicine research, and relates to a preparation method and application of a plant extract, in particular to a mustard leaf and camphor tree leaf extract and an extraction method thereof, and is applied to food or feed preservation. Background technique

[0002] Food preservation and anti-oxidation issues are the key to food preservation. During the production, processing, transportation and storage of food and feed products, molds and their toxins cause varying degrees of pollution to the products, resulting in economic losses. Common food and feed preservatives mainly include sodium benzoate, potassium sorbate, sodium dehydroacetate, calcium propionate, sodium diacetate, sodium lactate, propyl p-hydroxybenzoate, nisin and hydrogen peroxide. Certain ingredients in food and feed react with preservatives and may render them ineffective partially or completely. Some preserv...