Process for extracting anthocyanin from blueberries

A technology of anthocyanin and blueberry, which is applied in the field of extracting anthocyanin, can solve the problems of low industrialization and high energy consumption, and achieve the effects of increasing content and color-price ratio, ensuring yield, and increasing adsorption capacity

Inactive Publication Date: 2010-09-15
NANJING ZELANG AGRI DEV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] 3. Low degree of industrialization and high energy consumption

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Take 10kg of blueberries and crush them, put them into a multi-functional extraction tank, add 50Lph1 hydrochloric acid aqueous solution, soak for 2 hours, filter the liquid, then add 30ph2L hydrochloric acid aqueous solution to soak for 2 hours, after suction filtering the liquid, continue to add 30L ph3 hydrochloric acid aqueous solution to soak for 2 hours, Suction filter the liquid, combine the three extracts and add 320ml of prepared ZTC-III fruit juice clarifier, stir, mix and precipitate for 4 hours, filter and add 2LX-5 macroporous resin column for adsorption, flow rate 15L / h, after the adsorption is saturated, wash with deionized water To sugar-free color, then elute with 12L of 70% ethanol solution, collect the eluate, add a hollow composite membrane with a molecular weight cut-off of 3000 for ultrafiltration, control the inlet pressure within the range of 0.3-0.4Mpa, collect the permeate and then add a molecular weight cut-off of 200 Concentrate, collect conce...

Embodiment 2

[0030] Take 10kg of blueberries and crush them, put them into a multi-functional extraction tank, add 50Lph2 citric acid aqueous solution, soak for 4 hours, filter the liquid, then add 50Lph2L citric acid aqueous solution for 4 hours, filter the liquid, combine the extracts and add the prepared ZTC- III Juice clarifier 300ml, stirring and mixing for 6 hours. The filtered extract was added to a 2LD101 macroporous resin column for adsorption at a flow rate of 10L / h. After the adsorption was saturated, it was washed with deionized water to a sugar-free color, and then eluted with 14L of 70% ethanol solution. Filtration, the inlet pressure is controlled within the range of 0.3-0.4Mpa, the permeate is collected and added to a hollow composite membrane with a molecular weight cut-off of 200 for nanofiltration concentration, the concentrated solution is collected, and spray-dried to obtain 60g of anthocyanin product with a content of 82%.

Embodiment 3

[0032] Take 10kg of blueberries and crush them, put them into a multifunctional extraction tank, add 50Lph2 sulfuric acid aqueous solution, soak for 4 hours, add 100ml of prepared ZTC-III juice clarifier to the filtered liquid, mix and settle for 4 hours, then add 50Lph2L sulfuric acid to the extraction tank Soak in the aqueous solution for 4 hours, filter the liquid with suction, add 80ml of prepared ZTC-III fruit juice clarifier, stir, mix and precipitate for 4 hours, filter the extract and add it to a 2LX-5 macroporous resin column for adsorption at a flow rate of 10L / h. After the adsorption is saturated, remove Wash with ionized water until sugar-free, then elute with 14L 70% ethanol solution, collect the eluate, add hollow composite membrane ultrafiltration with a molecular weight cut-off of 3000, control the inlet pressure within the range of 0.3-0.4Mpa, collect the permeate and add the molecular weight cut-off Concentrate by nanofiltration with a hollow composite membran...

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PUM

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Abstract

The invention relates to a process for extracting anthocyanin from blueberries. The process uses the blueberries as a raw material and comprises the following steps of: pulverizing the raw material and adding acid water with a pH of 1-3 for soaking and extracting; clarifying an obtained extract by using a precipitator; adsorbing by using macroporous resin; eluting by using a 70 percent alcohol solution; ultrafiltering an obtained eluent by using an ultrafiltration membrane and then concentrating by using a nanofiltration membrane; and spraying and drying an obtained concentrated solution to obtain a finished product. By adopting the process to produce the blueberry anthocyanin, the product yield has high cost value ratio, and the energy consumption is less. The process is easy for industrialization.

Description

Technical field: [0001] The invention relates to a process for extracting anthocyanins from blueberries, in particular to a process for extracting anthocyanins through macroporous resin separation and membrane concentration. Background technique: [0002] Blueberry (Blueberry), scientific name Vaccinium, belongs to the plant of the genus Vaccinium in the family Rhododendronaceae. [0003] According to the analysis of Tufts University in the United States, among 40 kinds of vegetables and fruits with antioxidant effect, the anthocyanin content of blueberry ranks first. The anthocyanin contained in blueberry is the highest content among all fruits and vegetables, and the most abundant part of blueberry anthocyanin is in its unique purple peel. [0004] The special nutrients such as anthocyanins, organic germanium, organic selenium, arbutin, amino acids, and fruit acids contained in blueberries are unmatched by any plant, especially anthocyanins, which are composed of 16 biofl...

Claims

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Application Information

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IPC IPC(8): C07H17/065C07H1/08
Inventor 苏刘花
Owner NANJING ZELANG AGRI DEV
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