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Method for increasing aloin extraction yield

A technology of aloe extract and aloin, which is applied in the field of extraction of aloin and active ingredients of aloe, which can solve the problems of low purity of the extract, low yield, pollution, etc., and achieve the effect of good product purity and increased yield

Active Publication Date: 2014-04-02
AGATE PERFUME MINGGUANG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the extraction methods of aloe mainly include solvent extraction and ultrasonic extraction, but these traditional extraction methods have low yield, low purity of the extract, serious pollution, and are not suitable for industrial production.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] S1: Take 100 kg of Aloe vera leaves, peel the skin, mash the inner mesophyll, add 200 kg of n-hexane, then add 1 kg of citric acid and 1 kg of ammonium sulfate, stir evenly, carry out heating and reflux extraction, and the reflux time is 1 hour;

[0031] S2: Suction filtration of the feed liquid after reflux extraction to obtain a suction filtrate;

[0032] S3: Pass the suction filtrate into the chromatographic column equipped with spherical expanded-pore silica gel, and adsorb the components in the extract;

[0033] S4: eluting the chromatographic column in step S3, the elution rate is controlled at 2BV / h, and the elution time is 60 minutes;

[0034] S5: heating and concentrating the eluate until the volume becomes 1 / 3, cooling to 2°C to crystallize, filtering, separating and drying to obtain the crude aloe extract;

[0035] S6: Pour the crude aloe extract and No. 6 solvent oil into the carbon dioxide supercritical extraction device according to the weight ratio of 1...

Embodiment 2

[0040] S1: Take 120 kg of Aloe Vera leaves, peel the skin, mash the inner mesophyll, add 240 kg of n-hexane, then add 3 kg of citric acid and 3 kg of ammonium sulfate, stir evenly, carry out heating and reflux extraction, and the reflux time is 2 hours;

[0041] S2: Suction filtration of the feed liquid after reflux extraction to obtain a suction filtrate;

[0042] S3: Pass the suction filtrate into the chromatographic column equipped with spherical expanded-pore silica gel, and adsorb the components in the extract;

[0043] S4: Elute the chromatographic column in step S3, the elution rate is controlled at 3BV / h, and the elution time is 100 minutes;

[0044] S5: heating and concentrating the eluate until the volume becomes 1 / 3, cooling to 4°C to crystallize, filtering, separating and drying to obtain the crude aloe extract;

[0045] S6: Pour the crude aloe extract and No. 6 solvent oil into the carbon dioxide supercritical extraction device according to the weight ratio of 1...

Embodiment 3

[0050] S1: Take 110 kg of Aloe Vera leaves, peel the skin, mash the inner mesophyll, add 210 kg of n-hexane, then add 2 kg of citric acid and 2 kg of ammonium sulfate, stir evenly, and heat and reflux for extraction. The reflux time is 1.5 hours;

[0051] S2: Suction filtration of the feed liquid after reflux extraction to obtain a suction filtrate;

[0052] S3: Pass the suction filtrate into the chromatographic column equipped with spherical expanded-pore silica gel, and adsorb the components in the extract;

[0053] S4: Elute the chromatographic column in step S3, the elution rate is controlled at 2.5BV / h, and the elution time is 80 minutes;

[0054] S5: heating and concentrating the eluate until the volume becomes 1 / 3, cooling to 3°C to crystallize, filtering, separating and drying to obtain the crude aloe extract;

[0055] S6: Pour the crude aloe extract and No. 6 solvent oil into the carbon dioxide supercritical extraction device according to the weight ratio of 1:1.7, ...

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Abstract

The present invention provides a method for increasing aloin extraction yield, and belongs to the technical field of plant extraction, wherein mainly a solvent, citric acid and ammonium sulfate are added to carry out reflux extraction, a silica gel chromatographic column is adopted to carry out absorption separation, and then carbon dioxide supercritical extraction separation is performed to carry out further purification so as to achieve the increased aloin extraction yield. With the aloin extraction method, the component in the aloe raw material can be effectively precipitated, the yield of the method is increased compared with the yield of the conventional method, and the product purity is good and can achieve more than 99%.

Description

technical field [0001] The invention provides a method for extracting effective components of aloe, in particular relates to a method for extracting aloin, and belongs to the technical field of plant extraction. Background technique [0002] Evergreen, succulent herb, large and thick leaves, lanceolate, with sharp-toothed thorns on the edge, clustered, in seat shape or on the top of the stem. The inflorescence is umbel-shaped, spike-shaped or conical, with red, yellow or red spots, six petals and six pistils. [0003] The main classifications of aloe are: (1) Aloe vera: also known as aloe vera, aloe vera of the United States. The short stems and short leaves are arranged in a spiral shape, pinkish green, covered with white spots, thick and thick. Raceme. It is used in food, medicine, beauty products, etc. (2) Chinese aloe: also known as spotted aloe, is a variant of aloe library. The stem is short, the leaves are nearly clustered, and the seedling leaves are in two rows...

Claims

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Application Information

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IPC IPC(8): C07D309/10
CPCC07D309/10Y02P20/54
Inventor 胡云福
Owner AGATE PERFUME MINGGUANG
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