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A method for extracting proanthocyanidins from peony shells

A technology of proanthocyanidins and peony seed shells, which is applied in the production of bulk chemicals and organic chemistry, can solve the problems of unstable quality and low purity of proanthocyanidins, prevent oxidation and dissipation, prevent poisoning and environmental pollution, and The effect of less consumption

Active Publication Date: 2017-03-22
HEZE RUIPU PENOY IND TECH DEV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantage is that the obtained proanthocyanidins have low purity and unstable quality

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] (1) Raw material pretreatment: Wash the fresh peony seed shells just after shelling to remove impurities and dry them; dry or dry the washed peony seed shells until their moisture content is about 2%;

[0040] (2) Crushing: Put peony seed shells into a grinder and grind them to 200 meshes to obtain peony seed shell powder; mix the above peony seed shell powder with water, and the weight ratio of peony seed shell powder to water is 1:8; Stir evenly, heat to 50°C, adjust the pH of the material to 5.0, add compound enzyme, the compound enzyme is a mixture of acid cellulase, pectinase and xylanase, acid cellulase, pectinase and xylan Enzyme weight ratio = 4:1:2; the amount of compound enzyme is 4% of the weight of peony seed shell powder; enzymatic hydrolysis for 40 minutes, and enzyme inactivation at 95°C for 5 minutes;

[0041] (3) Extraction: Extract by supercritical carbon dioxide extraction method, the specific steps are as follows:

[0042] Pack the peony seed shell ...

Embodiment 2

[0053] A method for extracting proanthocyanidins from peony seed shells, comprising the steps of:

[0054] (1) Raw material pretreatment: wash the fresh peony seed shells just after shelling to remove impurities, and dry; the moisture content of dried peony seed shells is about 1%;

[0055] (2) Crushing: Put peony seed shells into a grinder for crushing to 50 mesh to obtain peony seed shell powder;

[0056] (3) Enzymolysis: Take the peony seed shell powder in step (2) and mix with water, the weight ratio of peony seed shell powder to water is 1:15; stir evenly, heat to 55°C, adjust the pH of the material to 5.5, Adding a compound enzyme, the compound enzyme is a mixture of acid cellulase, pectinase and xylanase, the weight ratio of acid cellulase, pectinase and xylanase=1:0.5:1; the compound enzyme The dosage is 2% of the peony seed shell powder; enzymatic hydrolysis for 30 minutes, and enzyme inactivation at 95°C for 5 minutes;

[0057] (4) Extraction: Extract by supercriti...

Embodiment 3

[0062] A method for extracting proanthocyanidins from peony seed shells, comprising the steps of:

[0063] (1) Raw material pretreatment: wash the fresh peony seed shells just after shelling to remove impurities, and dry; the moisture content of dried peony seed shells is about 1%;

[0064] (2) Crushing: Put peony seed shells into a grinder for crushing to 300 mesh to obtain peony seed shell powder;

[0065] (3) Enzymolysis: Take the peony seed shell powder in step (2) and mix with water, the weight ratio of peony seed shell powder to water is 1:15; stir evenly, heat to 40°C, adjust the pH of the material to 4.5, Add compound enzyme, the compound enzyme is the mixture of acid cellulase, pectinase and xylanase, the weight ratio of acid cellulase, pectinase and xylanase=6:2:3; compound enzyme The dosage is 2% of the peony seed shell powder; enzymatic hydrolysis for 30 minutes, and enzyme inactivation at 95°C for 5 minutes;

[0066] (4) Extraction: Extract by supercritical carb...

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Abstract

The invention belongs to the technical field of natural product extraction and in particular relates to a method for extracting procyanidine from peony hulls. The method comprises the following steps: (1) raw material pretreatment: cleaning just removed fresh peony seed hulls to remove impurities and drying the fresh peony seed hulls; (2) grinding: putting the peony seed hulls into a grinder to be ground to obtain peony seed hull powder; (3) extracting by adopting a supercritical carbon dioxide extraction method; and (4) purification: drying an obtained procyanidine extract in vacuum, thus obtaining high-purity procyanidine. The method has the advantages that the function conditions are mild, organic solvents are not adopted, the extract is free from solvent residues, and human body poisoning and environmental pollution in the extraction process are also prevented, so that the method is a pure natural extraction method; and a complex enzyme is added to act on the materials, thus effectively increasing the yield and purity of the product.

Description

technical field [0001] The invention belongs to the technical field of natural product extraction, and in particular relates to a method for extracting proanthocyanidins from peony seed shells. Background technique [0002] In recent years, the peony industry has been further developed. Since peony seed oil was approved by the state as "new resource food" in 2011, a large number of peony seeds have been used for the processing and production of peony seed oil. The planting area of ​​peony for oil has grown by leaps and bounds, and the planting area in the country is now more than 300,000 mu. [0003] Peony seed husk is a by-product of peony seed shelling before oil expression. The annual peony seeds are about 36 million kilograms. If all of them are used to produce peony seed oil, the by-product peony seed husks can reach more than 100 tons. These peony seed shells are discarded as waste, without further development and utilization, resulting in a great waste of resources....

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C07D311/62
CPCC07D311/62Y02P20/54
Inventor 赵孝庆张文娟
Owner HEZE RUIPU PENOY IND TECH DEV
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