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Method for extracting grape seed oil and procyanidine from grape seeds by one-step process

A technology of proanthocyanidins and grape seed oil, which is applied in the field of comprehensive utilization and extraction of grape seeds, can solve the problems of low utilization rate of grape seeds, increased equipment investment, increased production costs, etc., and achieves easy control, low production costs, and short operation time Effect

Active Publication Date: 2008-05-14
无锡中粮工程科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Chinese patents CN1724531A, CN1241623A etc. disclose supercritical CO 2 A method for extracting grape seed oil and proanthocyanidins, but the method is complex, the operation is cumbersome, the output is small, and the investment in equipment is large
Most domestic enterprises adopt the process of extracting grape seed oil or proanthocyanidins separately, the utilization rate of grape seeds is not high, the investment in equipment increases, and the production cost increases

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] Take 500g of grape seeds, crush them through a 40-mesh coarse sieve, extract them with 2000mL of n-hexane / ethanol mixed solvent, the ratio of n-hexane / ethanol is equal in volume, the temperature is 70°C, and the time is 6 hours. After leaching for 3 times, combine the solvents. After the mixed solvent was left to stand for stratification, the light phase extract was desolvated at 80-85°C and the vacuum degree was 0.02-0.04MPa to obtain grape seed crude oil, and the yield of crude oil was 57.79g; the heavy phase extract was obtained at 80 -85°C, vacuum under the condition of 0.02-0.04MPa to evaporate and recover the solvent under reduced pressure to obtain the extract, add 1000mL water to the extract, and centrifuge after standing to obtain the supernatant; fully soak and swell 1500g AB-8 resin with ethanol Wash with distilled water until there is no ethanol smell, put it into the adsorption column, and balance with water; add the supernatant to the adsorption column, the...

Embodiment 2

[0018] Take 500g of grape seeds, crush them through a 40-mesh coarse sieve, extract them with 1500mL of cyclohexane / acetone mixed solvent, the volume ratio of cyclohexane / acetone is 7:3, the temperature is 50°C, and the time is 6 hours. After leaching for 3 times, combine the solvents . After the mixed solvent was added with 500mL water to stand and separate, the light phase extract was desolvated at 80-85°C and the vacuum degree was 0.02-0.04MPa to obtain grape seed crude oil, and the yield of crude oil was 51.63g; the heavy phase extraction Evaporate and recover the solvent under reduced pressure at 80-85°C and a vacuum of 0.02-0.04MPa to obtain the extract, add 1000mL water to the extract, and centrifuge after standing to obtain the supernatant; fully soak 1500g D101 resin in ethanol After swelling, wash with distilled water until there is no ethanol smell, put it into the adsorption column, and balance it with water; add the supernatant to the adsorption column, and the ad...

Embodiment 3

[0020] Take 500g of grape seeds, crush them through a 40-mesh coarse sieve, extract with 2500mL of petroleum ether / methanol mixed solvent, the volume ratio of petroleum ether / methanol is 3:7, the temperature is 60°C, and the time is 6 hours. After leaching for 3 times, the solvents are combined. After the mixed solvent was left to stand for stratification, the light phase extract was desolvated at 80-85°C and the vacuum degree was 0.02-0.04MPa to obtain grape seed crude oil, and the crude oil yield was 53.46g; the heavy phase extract was obtained at 80 -85°C, vacuum at 0.02-0.04MPa, evaporate the solvent under reduced pressure to recover the extract, add 1000mL water to the extract, and centrifuge after standing to obtain the supernatant; fully soak and swell 1500g D3520 resin with ethanol and use Wash with distilled water until there is no ethanol smell, put it into the adsorption column, and balance it with water; add the supernatant to the adsorption column with an adsorptio...

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Abstract

The invention discloses a method for extracting grape seed oil and proanthocyanidins from grape seeds in one step, belonging to the technical field of comprehensive utilization and extraction of grape seeds. The invention uses crushed grape seeds as raw materials, extracts with a mixed solvent to obtain light phase and heavy phase extracts, the light phase extract is desolvated to obtain grape seed crude oil, and the heavy phase extract is purified by macroporous resin to obtain Proanthocyanidin products. The grape seed oil prepared by the grape seed treatment method of the present invention has good color and the residual oil rate is less than 1%; the yield of the prepared proanthocyanidin is higher than 75%, and the purity is higher than 95%. The method of the invention has the advantages of simple process flow, less equipment investment, easy control, standardized operation, short operation time, low production cost and easy industrialization.

Description

technical field [0001] The invention discloses a method for extracting grape seed oil and proanthocyanidins from grape seeds in one step, which uses a mixed solvent to extract grape seed oil and proanthocyanidins from grape seeds, and belongs to the technical field of comprehensive utilization and extraction of grape seeds. Background technique [0002] my country is rich in grape resources, and its cultivation area and output both rank fifth in the world. The annual output is about 5.176 million tons, while the grape seed skin waste generated by enterprises is about 400,000 tons. How to comprehensively utilize grape seed resources has become a concern hotspot. Grape seeds contain a large number of bioactive ingredients, including about 8% proanthocyanidins and about 12% grape seed oil. Grape seed proanthocyanidins have strong antioxidant properties, free radical scavenging ability and ability to improve human microcirculation. It is one of the strongest and most effective o...

Claims

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Application Information

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IPC IPC(8): C11B1/10C07D311/62
Inventor 郑茂强蒋蕴珍王四维王猛王璐朱小兵
Owner 无锡中粮工程科技有限公司
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