Method for extracting anthocyanin by injection type cavitation, application and device used in method

Abstract

The invention relates to the technical field of extraction of effective components of plants, in particular to a method for extracting anthocyanin by injection type cavitation, application and a device used in the method. The method for extracting the anthocyanin by injection type cavitation comprises the following steps: (1) pretreating a raw material to be extracted, and then mixing the raw material to be extracted with an extraction solvent according to a certain solid-liquid ratio; (2) extracting the solid-liquid mixture in the step (1) by using an injection type cavitation extraction method; and (3) after extraction is finished, taking supernatant after the solid-liquid mixture is centrifuged, and carrying out suction filtration to obtain an anthocyanin solution. The extracting methodis high in efficiency, low in energy consumption, high in treatment capacity and simple in process, the consumption of the solvent required by extraction of the method is small, the cost is low, theimpurity content after extraction is small, and further purification is facilitated. The concentration of the anthocyanin in the anthocyanin solution extracted by the extracting method is 8.5-10 mu g / mL, and the concentration of the anthocyanin obtained by the method is higher than the concentration of the anthocyanin obtained by a traditional solvent extracting method by 25%-50%.

Description

technical field [0001] The invention relates to the technical field of extraction of plant effective components, in particular to a method, application and device for extracting anthocyanins by injection cavitation. Background technique [0002] Plant-derived anthocyanin pigments are flavonoid compounds, most of which exist in the form of stable anthocyanins, and a single angiosperm can sometimes contain as many as dozens of anthocyanins. The number and type of substituents of different ring A and ring B constitute more than 20 known aglycones, which constitute more than 300 known anthocyanins. "Anthocyanins", which are usually used as finished products in the food industry, are a general term for a variety of glycosides with similar chemical properties and molecular structures. [0003] Traditional extraction methods of anthocyanins, such as solvent extraction and pressurized solvent extraction, use solvents to extract at room temperature or under pressure to increase the ...

AI Technical Summary

Problems solved by technology

These methods are low in cost and simple in process, and have been widely used; however, if the extraction time is too long, it will lead to the degradation of anthocyanins, waste time and solvent, and reduce the antioxidant activity and dyeing ability of the extracted products.

[0004] In recent years, laboratories have also used methods such as negative pressure cavitation, ultrasonic cavitation and high-pressure jets to extract anthocyanins, and the extraction efficiency has improved, but the single extraction amount is not large

In addition, there are enzymatic degradation and supercritical CO 2 The method is used for extraction, and the extraction effect is better, but because it contains impurities such as enzymes or hydrophilic groups, the post-treatment process is more complicated, and the environmental protection type is poor.

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