Method for extracting blueberry anthocyanin with good stability

A blueberry anthocyanin and extraction method technology, applied in the field of blueberry anthocyanin extraction, can solve the problems of easy fading, insufficient stability, inconvenient daily production and application, etc., and achieve the effect of good stability and not easy to change color

Active Publication Date: 2013-02-27
CHANGSHA HUAKANG BIOTECH DEV
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  • Application Information

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Problems solved by technology

[0006] The existing blueberry anthocyanin extraction process is: raw material-crushing-alcohol extraction-water precipitation-filtration-column adsorption-elution-concentration-drying-crushing-packaging-finished product, its stability is not good enough, and it is easy to fade , which brings inconvenience to daily production and application

Method used

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Embodiment Construction

[0022] The technical scheme of the present invention will be further described below through specific embodiments:

[0023] The invention provides a method for extracting blueberry anthocyanins with good stability, comprising the following steps:

[0024] S1, material preparation: crush the raw material into fine powder of 20-60 mesh;

[0025] S2. Alcohol extraction: extract three times with 60% ethanol water, the extraction temperature is 50°C, and the extraction time is 2h, 2h, and 1h respectively;

[0026] S3. Water precipitation: after vacuum concentration and recovery of ethanol, the concentrate is added with pure water to precipitate and remove impurities. The vacuum degree during vacuum concentration is -0.07MPa~-0.088MPa;

[0027] S4. Membrane separation: after the supernatant is separated by the membrane, it is concentrated in vacuum again. When the membrane is separated, the temperature is <40°C, the pressure is <0.1MPa, and the vacuum degree is -0.07MPa~-0.088MPa d...

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Abstract

The invention discloses a method for extracting blueberry anthocyanin with good stability. Raw materials are crushed into fine powder in a range of 20 meshes to 60 meshes; ethanol water of 60% is used for extraction for three times, wherein the extraction temperature is 50 DEG C, and the extraction time is 2h, 2h and 1h respectively; vacuum concentration is performed to recycle ethanol, pure water is added in a concentrate for precipitation and impurity removing, and a supernate is subjected to membrane separation and secondary vacuum concentration; supercritical CO2 extraction separation is performed, wherein the extraction temperature is 35 DEG C, and the pressure is 25 MPa; and vacuum drying is performed after refining and impurity removing, dry pastes are crushed and screened, accessories are added, and the mixture is mixed evenly, inspected, packaged and put in storage. Low-temperature separation techniques of membrane separation techniques, supercritical extraction separation techniques and the like are used to extract superior blueberry extract powder. The blueberry anthocyanin is not easy to change colors and is good in stability.

Description

technical field [0001] The invention relates to a method for extracting anthocyanins, in particular to a method for extracting blueberry anthocyanins with good stability. Background technique [0002] Blueberry, also known as bilberry, blueberry, red bean fruit, etc., is a plant of the genus Vaccinium in the family Rhododendronaceae. It is a shrub and distributed in subfrigid, temperate and subtropical zones. Blueberry fruit is rich in nutrients. In addition to organic acids, vitamins and minerals in general fruits, it also contains rich unsaturated fatty acids and trace elements, anthocyanins, flavonoids and other phenolic physiologically active ingredients. It has strong medicinal value and nutritional function, and it is listed as one of the five health foods by the National Food and Agriculture Organization. In recent years, it has developed rapidly and has a large market capacity. According to the long-term development of the industry, it is imperative to increase the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07D311/62
CPCY02P20/54
Inventor 刘星勋
Owner CHANGSHA HUAKANG BIOTECH DEV
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