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Method for extracting natural vitamin E from blackberry seeds

A technology of natural vitamins and seeds, applied in the field of deep chemical industry, to achieve the effects of easy control of conditions, simple process and no solvent residues

Active Publication Date: 2012-05-23
江苏连恒生物科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, no studies have reported the method of extracting vitamin E from blackberries

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Take 50kg of blackberry wet pomace, wash, remove impurities and separate to obtain pure, mildew-free blackberry seeds. The seeds were placed in an air blast drying oven and kept at 40° C. for 4 hours to obtain 10.6 kg of seeds with a moisture content of 6.81%. The dried seeds were crushed, passed through a 20-mesh sieve, extracted with a mixture (1:1) of n-hexane and petroleum ether (30-60), the solvent consumption was 50 L, and the temperature was kept at 40°C for 2 hours. The extracted mixture enters a rotary evaporator, and the solvent is recovered at 0.095-0.097MPa and 40°C to obtain 1.378kg of blackberry seed oil crude extract, V E Content 1.93%.

[0026] Add 3000g of urea to the reflux container, and add 20L of 95% ethanol as a solvent. After the urea is completely dissolved, add the crude oil extract, reflux at 50°C for 30min, and then stand at 4°C for 3h. After filtration, the upper filtrate was distilled under reduced pressure, and the ethanol reagent was rec...

Embodiment 2

[0030] Get 20kg of dried blackberry pomace after natural air-drying, separate by sieving, remove impurities such as pericarp, and obtain pure, mildew-free blackberry seeds with a moisture content of 11.71%. The seeds were placed in an air blast drying oven and kept at 40° C. for 3.5 hours to obtain 10.3 kg of seeds with a moisture content of 7.61%. The dried seeds were crushed, passed through a 20-mesh sieve, extracted with a mixture (1:1) of n-hexane and petroleum ether (30-60), the solvent consumption was 40 L, and the temperature was kept at 42°C for 2 hours. The extracted mixture enters a rotary evaporator, and the solvent is recovered in batches at 0.095-0.097MPa and 40°C to obtain a total of 1.253kg of blackberry seed oil crude extract, V E Content 1.85%.

[0031] Add 3000g of urea to the reflux container, and add 20L of 95% ethanol as a solvent. After the urea is completely dissolved, add the crude oil extract, reflux at 55°C for 30min, and then stand at 4°C for 3h. A...

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Abstract

The invention discloses a method for extracting a natural vitamin E from blackberry seeds, which comprises the following steps of: (1) solvent extraction: drying the seeds, extracting by using a mixed liquor of normal hexane and petroleum ether and concentrating extracting liquor to obtain a crude fat extract; (2) urea clathration: dissolving urea by using 95% ethyl alcohol, adding the fat extract, thermally extracting, standing at 0-4 DEG C, filtering, obtaining upper filtrate and carrying out reduced pressure distillation to obtain an oil phase; (3) silica gel column chromatography: carrying out the silica gel column chromatography on the oil phase, collecting eluant which is mixed liquor of absolute ethyl alcohol and normal hexane and concentrating to obtain a vitamin E concentrated solution; and (4) decoloration: decoloring the vitamin E concentrated solution by using a mixture of 7% of active carbon and atlapulgite to finally obtain a natural vitamin E product. The content and the yield of the vitamin E in the product obtained by using the method can be up to 50%.

Description

technical field [0001] The invention relates to a method for extracting natural vitamin E, in particular to a method for extracting natural vitamin E from blackberry seeds, and belongs to the technical field of deep chemical industry. Background technique [0002] Natural vitamin E, scientific name tocopherol, is a commonly used medicine and health care product. As a medicine, it can prevent arteriosclerosis, cerebral hemorrhage, diabetes, heart disease and liver disease. It is also a natural antioxidant, widely used in oil, food, cosmetics and feed industries. In addition, tocopherol also has health care functions. Natural vitamin E has become an important vitamin variety with the most uses and a large production and sales volume in the international market. Together with vitamin C and vitamin A, it has become the three pillar products of the vitamin series. [0003] The commonly used natural vitamin E extraction process is to use vegetable oil deodorized distillate as ra...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C07D311/72
Inventor 李维林崔恩惠方亮吴文龙闾连飞赵慧芳王小敏
Owner 江苏连恒生物科技有限公司
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