A kind of preparation method of dried ginger extract

Abstract

The invention discloses a preparation method of dried ginger extract. The preparation method comprises the following steps of crushing dried ginger, carrying out reflux extraction twice by ethanol, concentrating extract obtained from the previous step into paste, extracting three times by at least one solvent, concentrating extract obtained from the previous step into paste, carrying out clathration treatment by an N-C modified starch solution, and carrying out spray drying to obtain dried ginger extract. The content of an active ingredient gingerol in the dried ginger extract prepared by thepreparation method is increased to the content of 15 to 24%. The preparation method has the advantages of simple operation, environmentally friendly characteristics, no toxicity and low production cost.

Description

technical field [0001] The invention relates to a preparation method of a traditional Chinese medicine extract, in particular to a preparation method of a dried ginger extract, and belongs to the field of preparation of traditional Chinese medicines. Background technique [0002] Ginger, also known as Zingiber officinale, is a Zingiberaceae plant. The rhizome is pungent and slightly warm in nature, with a specific aroma. It enters the lungs, spleen, and stomach. The chemical composition of ginger is complex, and more than 100 kinds have been found, which can be classified into three categories: volatile oil, gingerol and diphenylcycloheptane. The volatile oil contained in ginger can accelerate blood circulation, warm the whole body, and excite the nerves; gingerol can stimulate the secretion of gastric juice and promote digestion. Taking a large amount can cure dry mouth and sore throat. Ginger has great medicinal value and a wide range. Drinking ginger brown sugar water ca...

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Problems solved by technology

The gingerol content of ginger extract in the organic solvent extraction method is less than 20%, and the extract is easily polluted by residual solvents and precipitates and changes color, so its use is limited; the product extracted by the pressing method is unstable and has a short shelf life; Supercritical CO 2 Although the extraction rate of the extraction method is high, the popularization is limited because of expensive equipment; the extract obtained by the steam distillation extraction method has poor fluidity, and its content does not reach the medicinal requirements. At present, in the dried ginger extract in the laboratory The content of gingerol in Chinese medicine can only reach about 24% at most, and there are only dried ginger extracts with gingerol about 7%-10% in production.

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