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A two-phase aqueous system and its application in the separation of flavonoids from red star apple peel

A two-phase system, apple peel technology, applied in the field of food science and engineering, can solve the problems of long extraction time, complicated operation, expensive equipment, etc., and achieve the effects of short extraction time, high purity and easy operation.

Inactive Publication Date: 2018-11-27
CHANGAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Aiming at the existing flavonoid extraction method has the disadvantages of long extraction time, expensive equipment, complicated operation, and low extraction rate, the object of the present invention is to provide a method for separating flavonoids in red star apple peel by an imidazole ionic liquid two-phase system new method

Method used

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  • A two-phase aqueous system and its application in the separation of flavonoids from red star apple peel
  • A two-phase aqueous system and its application in the separation of flavonoids from red star apple peel
  • A two-phase aqueous system and its application in the separation of flavonoids from red star apple peel

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0050] Mix 3.00g of 1-ethyl-3-methylimidazolium phosphate dimethyl salt ionic liquid, 3.13g of n-butanol and appropriate amount of distilled water to make the total mass of the system 10g; add 2g of the red star apple peel grinding liquid to be tested , and then ultrasonically oscillated for 30 min under the conditions of temperature 35° C. and pH 5.5, phase separation and static extraction for 24 h.

[0051] In order to test the effect of the present invention on separating and extracting the flavonoids in the red star apple peel, the content of the flavonoids was measured, and the extraction rate was 97.2%.

Embodiment 2

[0053] The preparation method in this example is the same as that in Example 1, the only difference being that the conditions in the preparation process are different. In this example, the ionic liquid is changed to 1-ethyl-3-methylimidazolium tetrafluoroborate, and the temperature changes 65°C, and the rest of the conditions remain unchanged.

[0054] In order to test the effect of the present invention on separating and extracting the flavonoids in the red star apple peel, the content of the flavonoids was measured, and the extraction rate was 80.7%.

Embodiment 3

[0056] The preparation method in this example is the same as that in Example 1, the only difference being that the conditions in the preparation process are different. In this example, n-butanol is changed to an equivalent amount of isobutanol, the pH value becomes 3.0, and the rest of the conditions remain unchanged. .

[0057] In order to test the effect of the present invention on separating and extracting the flavonoids in the red star apple peel, the content of the flavonoids was measured, and the extraction rate was 50.2%.

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Abstract

The invention discloses an aqueous two-phase system and applications thereof in flavone separation from 'Starking' apple peel. The aqueous two-phase system comprises a 1-ethyl-3-methylimidazolium dimethyl phosphate ionic liquid, n-butanol and water. The aqueous two-phase system comprises 24.5-35.0% by mass of the 1-ethyl-3-methylimidazolium dimethyl phosphate ionic liquid and 27.5-43.0% by mass of the n-butanol, with the balance being the water and the sum of mass percentages of the ionic liquid, the n-butanol and the water being 100%. The aqueous two-phase system is applied for flavone separation from the 'Starking' apple peel and the extraction rate of flavones reaches 97.2%. The aqueous two-phase system s is characterized by a wide linear range, a low detection limit, low relative standard deviation and a high recovery rate of samples, and is simple in operation, high in extraction rate and suitable for quantification research on the flavones in the 'Starking' apple peel.

Description

technical field [0001] The invention belongs to the field of food science and engineering, and in particular relates to a two-phase aqueous system and its application for separating flavonoids from red star apple peels. Background technique [0002] In recent years, due to the development of free radical life sciences, total flavonoids, which have strong antioxidant and free radical elimination effects, have received unprecedented attention. Total flavonoids are involved in the metabolism of phosphoric acid and arachidonic acid, phosphorylation of protein, transfer of calcium ions, scavenging of free radicals, enhancement of antioxidant activity, redox, chelation and gene expression. Bioflavonoids from natural sources have a small molecular weight, can pass through the blood-brain barrier, enter adipose tissue, and be quickly absorbed by the body. Their health benefits are: (1) anti-inflammatory (2) anti-allergic (3) inhibits bacteria (4) inhibits parasites (5) inhibits vir...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01D11/02C07D311/30C07D311/40
CPCB01D11/0288C07D311/30C07D311/40
Inventor 李宇亮杜慧徐帅朱棋
Owner CHANGAN UNIV
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