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Astaxanthin extraction method

An extraction method, the technology of astaxanthin, which is applied in the direction of organic chemistry, can solve the problems of affecting food safety, taking several hours, and high cost, and achieve the effects of avoiding high-temperature oxidation loss, short wall breaking time, and high wall breaking rate

Inactive Publication Date: 2009-03-11
陈锦猜
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0010] 4. Haematococcus culture method, microalgae such as: Haematococcus, Chlamydomonas, Chlorella, Scenedesmus, Chlorella, snow algae and other green Both can synthesize astaxanthin, among which Haematococcus pluvialis is the microalgae with the highest astaxanthin content, and its breeding conditions are relatively strict and the cost is relatively high
Because hydrochloric acid, sodium hydroxide and other substances need to be added in this process, it not only increases the cost, but also affects its food safety, and its wall breaking rate is 75-80%, which limits its application value
[0014] 2. Enzymatic hydrolysis and wall breaking method: the process is: feed liquid—add biological enzyme and stir to break the wall—centrifugal separation—spray drying. The disadvantage is that the enzymatic hydrolysis treatment takes a long time, generally takes several hours, and the wall breaking rate At about 85%, the loss rate of astaxanthin is about 25%, and the loss is large

Method used

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Examples

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example 1

[0027] 1. Using glucose or fructose syrup and yeast extract as raw materials to ferment Rhodotorula paffia astaxanthin, fermentation conditions: temperature 20-24°C, pH 4.0-5.0, fermentation period 4 days;

[0028] 2. After cooling to 15°C after fermentation, feed into LW424Y horizontal screw unloading sedimentation centrifuge to collect yeast sludge by centrifugation. The moisture content of the obtained yeast sludge should not be higher than 85%, and the loss rate of the whole centrifugal separation process should be controlled at 0.5%. the following;

[0029] 3. Use a screw pump to drive the yeast mud into the GZ-200 high-speed centrifugal spray dryer. Before feeding, adjust the inlet temperature to 160-200°C / outlet temperature to 50-80°C. The drying time of the material should not exceed 1 minute. After drying, it must contain Yeast powder with a moisture content of 5-10%, the loss rate of astaxanthin is 5-10%, and the yeast powder is collected with a black cloth bag at th...

example 2

[0032] 1. Using glucose or fructose syrup and yeast extract as raw materials to ferment Rhodotorula paffia astaxanthin, fermentation conditions: temperature 20-24°C, pH 4.0-5.0, fermentation period 4 days;

[0033] 2. After the fermentation is finished, cool to 15°C and put the material into the LW424Y horizontal screw discharge sedimentation centrifuge to collect the yeast sludge by centrifugation. The moisture content of the yeast sludge obtained should not exceed 85%, and the loss rate of the whole centrifugal separation process should be controlled below 0.5%. ;

[0034] 3. Use the screw pump to drive the yeast mud into the WZL-900 continuous microwave vacuum dryer. Before feeding, adjust the temperature of the cavity to 40-50 ° C, the vacuum degree to -0.080 MPa, and the drying time of the material for 30 minutes. After drying, it will contain moisture 5-10% of the yeast powder and astaxanthin loss rate of 5-10%, collect the yeast powder with a black cloth bag at the outl...

example 3

[0037] 1. Separate the Haematococcus pluvialis liquid to obtain algae mud with a water content of 75%. Use a screw pump to pump the algae mud into the GZ-200 high-speed centrifugal spray dryer. Before feeding, adjust the inlet temperature to 160-200°C / The outlet temperature is 50-80°C, and the drying time of the material does not exceed 1 minute. After drying, the algae powder with a moisture content of 5-10% and the loss rate of astaxanthin are 3-7%. Collect it with a black cloth bag at the outlet of the spray dryer Algae powder;

[0038] 2. The dried algae powder enters the LZQS-400 fluidized bed collision jet mill for wall breaking. The wall breaking temperature is 20-30°C and the gas pressure is 8-12 atmospheres. The wall breaking rate is 90%, and the astaxanthin loss rate is about 10%. The algae powder after wall breaking is directly vacuum-packed in an aluminum foil bag and stored in the dark at 2-8°C.

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Abstract

The invention discloses a method for extracting astaxanthin, which is finished by taking a rhodotorula or microalgae feed liquid containing the astaxanthin as a raw material, and performing separation, drying, crushing wall-breaking processes to the feed liquid. The method comprises the following concrete steps: the raw material is separated first to produce a mashed material with the water content less than or equal to 90 percent; the mashed material is dried to produce feed powder with the water content of between 5 and 10 percent; then an airflow crushing method is adopted to crush the feed powder to particles with diameters less than or equal to 10mu m. In the method, the drying is performed first and then the wall-breaking is performed, so the loss of the astaxanthin is reduced; the airflow crushing method is adopted, and has high wall-breaking rate and short wall-breaking time (only 1 minute or so), the temperature is between 20 and 30 DEG C during the wall-breaking process, and avoids the loss of the astaxanthin due to high-temperature oxidation; and the loss rate of the astaxanthin is less than or equal to 10 percent, and the wall-breaking rate is more than or equal to 90 percent.

Description

technical field [0001] The invention relates to a method for extracting astaxanthin, in particular to a method for extracting astaxanthin from red yeast or microalgae feed liquid. Background technique [0002] The chemical name of Astaxanthin is 3,3'-dihydroxy-4,4'-diketone-β-carotene, and its molecular formula is C 40 h 52 o 4 , the relative molecular mass is 596.86, and its structural formula is as follows: [0003] [0004] It is a ketocarotenoid containing two hydroxyl groups (—OH) and two keto groups (=0). It is an oxygen-containing organic compound with a red color, insoluble in water, and easily soluble in most organic solvents. [0005] Astaxanthin has a strong antioxidant function, can remove free radicals produced by ultraviolet radiation in the body, regulate and reduce the harm caused by photochemistry, and has a good curative effect on skin cancer caused by ultraviolet rays. The protective effect of astaxanthin against fat oxidation under certain conditi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07C403/24
Inventor 陈锦猜
Owner 陈锦猜
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