Licorice Root Extractable Antioxidant
Scientific experiments have proved that the antioxidant active ingredients extracted from the roots of Chinese herbal medicine licorice are mainly mixtures of flavonoids and flavonoids. The extracted anti-oxidant material can still not weaken its anti-oxidation effect at a high temperature of 259° C., and has a strong free radical scavenging effect, in particular, a stronger effect on oxygen radicals, so that it can inhibit the rancidity of the oil and grease. The survival of malondialdehyde, the final product of peroxidation, has a significant inhibitory effect.
The experiment also showed that the whole flavonoids not only have anti-oxidation effect, but also have the functions of inhibiting E. coli, Staphylococcus aureus, Bacillus subtilis, etc. The bactericidal efficacy of the total flavonoid solution of 1% is 83%~92%. It can be considered that it is not only an efficient, non-toxic natural antioxidant, but also a natural preservative, and its application prospect is very broad.
The active ingredients of licorice are mainly in the mixture of flavonoids and flavonoids in the roots and stems, and the content is about 27%. Extraction of licorice antioxidants is carried out using a two-step process. The licorice fresh raw materials are extracted into residues after licorice extract or glycyrrhizic acid, and extracted with a solvent or supercritical CO2 extraction process. It can be added to a variety of foods such as oil, oily foods, meat products, instant noodles, biscuits, and pickled products. The maximum amount used is 0.02%.
According to historical records, Japan is the only country that uses licorice antioxidants for fats or butters, margarine, instant noodles, meat products, canned goods, chocolate, etc., of various types of fried foods, and was subsequently developed and added to cola beverages. Chewing gum and beer inside. Glycyrrhizin in licorice has anti-cirrhosis, blood lipid reduction, anti-atherosclerosis and anti-cancer effects. Recently, Japanese researchers found that glycyrrhizin has an inhibitory effect on AIDS. As we all know, licorice can be used in addition to medicinal purposes, foaming agents, food additives, stabilizers and adhesives and other applications.
Licorice is one of the unique Chinese herbal medicines in China. It is a perennial herb that has long, thick roots. The main root is cylindrical, with a diameter of 1.5 cm to 2 cm. The root length is generally about 2 meters. It is the site from which antioxidative and antiseptic substances are extracted. Mainly wild in the northeast, north and northwest of Inner Mongolia, Heilongjiang, Hebei, Shanxi, Ningxia, Gansu, Xinjiang and other provinces, districts, semi-arid or drought areas. For a long time, he has been known for his "medicinal medicines," making a variety of medicines or exporting large amounts of raw materials. According to statistics, there are about 21 species of licorice, which are distributed between 30 and 35 degrees north latitude, and the arid and semi-arid areas with a latitude of about 40 degrees north latitude are its main distribution areas.
In recent years, as a result of predatory indiscriminate mining, the wild licorice resources in China have been devastated, and the area and reserves have fallen drastically. For this reason, China has classified licorice as a "secondary protection medicinal material." At the same time, the technical research of artificial cultivation of licorice has been successful in China. At present, there are a lot of licorice artificial plantations in the country.
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