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Method for removal of saccharide from anthocyanin with nanofiltration membrane

An anthocyanin and nanofiltration membrane technology, applied in chemical instruments and methods, membrane technology, semi-permeable membrane separation, etc., can solve the problems of high energy consumption, large solvent recovery, complicated operation, etc. Simple and easy to operate, solve the effect of long process flow

Pending Publication Date: 2019-03-29
TSINGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, because the chromatography column separation process requires the use of a large amount of solvents, such as ethanol, etc., the operation is complicated; and the amount of solvent recovery in the later stage is large, and the energy consumption is high; the solvent recovery adopts vacuum evaporation, and the evaporation process is partially decomposed due to the heating of anthocyanins. Anthocyanin yield is low

Method used

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  • Method for removal of saccharide from anthocyanin with nanofiltration membrane

Examples

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Effect test

Embodiment 1

[0013] The membrane area is 130m 2 1. A polyimide membrane with a molecular weight cut-off of 1000 Da was used to treat 350 g of an aqueous solution containing 0.5 wt % anthocyanins, wherein the glucose content was 2.0 wt % and the fructose content was 1.4 wt %. Treat for 1 hour at a temperature of 25°C and an operating pressure of 0.7 MPa to obtain 240 g of anthocyanin solution with an anthocyanin content of 0.721 wt%, wherein the glucose content is 1.81 wt%, and the fructose content is 1.21 wt%.

Embodiment 2

[0015] The membrane area is 130m 2 1. A polysulfone membrane with a molecular weight cut-off of 1000 Da is used to treat 350 g of an aqueous solution containing 0.5 wt % anthocyanins, wherein the glucose content is 2.0 wt % and the fructose content is 1.4 wt %. At a temperature of 25° C. and an operating pressure of 0.7 MPa, the process was performed for 1 hour to obtain 240 g of anthocyanin solution with an anthocyanin content of 0.729 wt%, wherein the glucose content was 1.80 wt%, and the fructose content was 1.22 wt%.

Embodiment 3

[0017] The membrane area is 130m 2 1. A polyethersulfone membrane with a molecular weight cut-off of 1500Da was used to treat 350 g of an aqueous solution containing 0.5 wt% anthocyanins, wherein the glucose content was 2.0 wt%, and the fructose content was 1.4 wt%. At a temperature of 25° C. and an operating pressure of 0.7 MPa, the process was performed for 1 hour to obtain 240 g of anthocyanin solution with an anthocyanin content of 0.726 wt%, wherein the glucose content was 1.84 wt%, and the fructose content was 1.23 wt%.

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Abstract

Belonging to the technical field of natural product extraction, the invention provides a method for removal of saccharide from anthocyanin with a nanofiltration membrane. The method utilizes modifiedor unmodified polyamide membrane, polyimide membrane, polysulfone membrane or polyethersulfone membrane as the nanofiltration membrane to remove fructose and glucose from anthocyanin, wherein the saccharide removal rate reaches 30-60%, and anthocyanin basically has no loss, the method is simple and easy to operate, and effectively solves the problems of long process and low anthocyanin content after concentration in the traditional technology.

Description

technical field [0001] The invention belongs to the technical field of natural product extraction, in particular to a method for removing sugars in anthocyanins by using a nanofiltration membrane. Background technique [0002] Blueberries are rich in nutrients and are recommended by the World Food and Agriculture Organization as the "world's third-generation fruit" after apples and citrus. Anthocyanins in blueberries are the main biologically active substances, which have various physiologically active functions such as preventing brain nerve aging, protecting eyesight, strengthening the heart, anti-cancer, softening blood vessels, and enhancing human immune function. A number of studies have shown that anthocyanins are the most effective natural antioxidant bioactive agents found by humans today, known as "oral skin cosmetics", and their antioxidant properties are 50 times higher than vitamin E and 200 times higher than vitamin C . Anthocyanins in blueberries are not only...

Claims

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Application Information

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IPC IPC(8): B01D61/02C07D311/62
CPCB01D61/027C07D311/62
Inventor 刘铮卡姆拉汗汤志刚蒋国强努尔艾力·麦麦提尼亚孜·艾力郭栋
Owner TSINGHUA UNIV
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