Method for preparing fat-soluble natural antioxidant from aronia melanocarpa fruits

A technology of Aronia nigra and natural antioxidants, which is applied in the field of fat-soluble natural antioxidant preparation, can solve the problems of poor fat solubility of natural antioxidants, and achieve the effects of easy industrial production, simple process, and improvement of poor fat solubility

Inactive Publication Date: 2020-01-10
SHANXI INST OF COAL CHEM CHINESE ACAD OF SCI
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] The present invention provides a method for preparing fat-soluble natural antioxidants from the fruit of Sorbus arvensis in view of the above problems, which solves the problem of poor fat solubility of natural antioxidants and makes full use of the polyphenol content of Sorbus arvensis at the same time High characteristics, develop a fat-soluble natural antioxidant with good fat solubility, strong anti-oxidation performance and high safety

Method used

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  • Method for preparing fat-soluble natural antioxidant from aronia melanocarpa fruits
  • Method for preparing fat-soluble natural antioxidant from aronia melanocarpa fruits
  • Method for preparing fat-soluble natural antioxidant from aronia melanocarpa fruits

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025]1) Take 200g of Aronia sarcocarpa and add it to 1000ml of 60% ethanol aqueous solution, extract at 50°C for 7h, filter, and concentrate and dry the filtrate under reduced pressure to obtain 9.8g of Aronia sativa extract, that is, Sorbus sativa Aronia polyphenols, this extract is labeled as extract a1, the yield of Aronia polyphenols is 49mg / g, and the purity is 90.8%.

[0026] 2) Dissolve 4g of aluminum tribromide and 5g of octanoyl chloride in 80mg of nitrobenzene to form a complex at 5°C, then gradually add 5g of extract a1, and raise the temperature to 40°C at a rate of 1°C / min for acylation Reaction, the reaction time is 6h, the product is washed with ice deionized water, extracted with ethyl acetate, concentrated in vacuo, and dried to obtain 9.4g fat-soluble natural antioxidant. This product is marked as product a2, and the product a2 and BHT at the same concentration are measured (2,6-di-tert-butyl-4-methylphenol, commonly used as food antioxidant) to detect the a...

Embodiment 2

[0039] 1) Add 200 g of Aronia nigrum to 1600 ml of 40% methanol aqueous solution, extract at 60°C for 10 h, filter, concentrate and dry the filtrate under reduced pressure to obtain 10.2 g of Aronia nigra extract, namely Aronia nigra Aronia polyphenols, this extract is labeled as extract b1, the yield of Aronia polyphenols is 5.1 mg / g, and the purity is 90.2%.

[0040] 2) Dissolve 3.5g of aluminum trichloride and 6g of nonanoyl chloride in 100mg of benzene to form a complex at 7°C, then gradually add 5g of extract b1, and raise the temperature to 50°C at a rate of 1°C / min for acylation Reaction, the reaction time is 5h, the product is washed with ice deionized water, extracted with ethyl acetate, concentrated in vacuo, and dried to obtain 9g of fat-soluble natural antioxidant. The ability of DPPH free radicals, the results are shown in Table 2-1, it can be seen that the ability of product b2 to scavenge DPPH free radicals is much higher than that of BHT:

[0041] table 2-1

...

Embodiment 3

[0050] 1) Take 200 g of Aronia nigrum and add it to 1200 ml of 85% ethanol aqueous solution, extract at 40° C. for 16 hours, filter, and concentrate and dry the filtrate under reduced pressure to obtain 11.2 g of Aronia nigra extract, namely Aronia nigra Aronia polyphenols, this extract is labeled as extract c1, the yield of Aronia polyphenols is 5.6mg / g, and the purity is 89.8%.

[0051] 2) Dissolve 6.5g of ferric chloride and 4g of decanoyl chloride in 150mg of dichloromethane at 6°C to form a complex, then gradually add 5g of extract c1, and raise the temperature to 35°C at a rate of 1°C / min Acylation reaction, the reaction time is 7h, the product is washed with ice deionized water, extracted with ethyl acetate, concentrated in vacuo, and dried to obtain 9.9g of fat-soluble natural antioxidant. This product is labeled as product c2, and the ability to scavenge DPPH free radicals by measuring the same concentration of product c2 and BHT, the results are shown in Table 3-1, i...

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Abstract

The invention belongs to the technical field of preparation of fat-soluble natural antioxidants, and particularly relates to a method for preparing a fat-soluble natural antioxidant from aronia melanocarpa. The method comprises the following steps: (1) aronia melanocarpa fruits are taken and crushed, extracting is conducted in an alcohol-water solution, and filtrate is dried to obtain an extract;and (2) a catalyst and fatty acyl chloride containing 8-16 carbon atoms are dissolved in a reaction solvent at the low temperature to form a complex, then the extract obtained in the step (1) is gradually added, the temperature is slowly increased to a certain temperature for an acylation reaction, and thus the fat-soluble antioxidant is obtained. The fat-soluble antioxidant can be dissolved in grease and an organic solvent, is insoluble in water and has high oxidation resistance performance, the high oxidation resistance characteristic of the aronia melanocarpa is fully utilized and given tofull play, a new thought and approach are provided for efficient utilization of the aronia melanocarpa, and technical parameters are provided for industrial production of the fat-soluble natural antioxidant.

Description

technical field [0001] The invention belongs to the technical field of preparation of fat-soluble natural antioxidants, and in particular relates to a method for preparing fat-soluble natural antioxidants from the fruit of Aronia nigra. Background technique [0002] Aronia nigra is a deciduous shrub belonging to the Rosaceae family. It is native to wet forests and swamps in eastern North America. It is a precious tree species with edible, medicinal, garden and ecological values. Aronia black fruit contains a variety of biologically active substances, such as polyphenols, organic acids, triterpenoids and sterols, etc., so Aronia black fruit has extraordinary health effects, known as As an "anticancer agent" in nature, the existing research compared the content of polyphenolic compounds in 143 kinds of plants, and the results showed that the content of polyphenolic compounds in Aronia black fruit was the highest, about 80 times that of grape grapes, 20 times goji berry, 15 ti...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61K36/73A61P39/06
CPCA61K36/73A61K2236/333A61K2236/51A61P39/06
Inventor 贾时宇侯相林
Owner SHANXI INST OF COAL CHEM CHINESE ACAD OF SCI
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