Method for extracting astaxanthin by using procambarus clarki shell

A technology of Procambarus clarkii and astaxanthin, which is applied in the direction of organic chemistry, can solve the problems of undeveloped utilization, etc., and achieve the effect of beneficial processing level and large economic benefits

Inactive Publication Date: 2009-05-06
JIANGNAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Some of these shrimp shells are processed into

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0009] Example 1

[0010] Shrimp shells were dried and crushed, soaked in 0.5mol / L hydrochloric acid for 8 hours, centrifuged to release the hydrochloric acid, the precipitate was extracted with chloroform, after 13 hours of extraction, the supernatant was centrifuged to obtain the supernatant, and the chloroform was recovered by vacuum concentration to obtain the crude red astaxanthin extract Things.

[0011] The ratio of dried shrimp shell powder to hydrochloric acid is 1g / 100mL; the ratio of shrimp shell powder to chloroform after hydrochloric acid treatment is: 10g / 100mL.

[0012] The yield of the obtained crude astaxanthin extract is not high, and the final extraction rate is about 150 mg / kg shrimp shell.

Example Embodiment

[0013] Example 2

[0014] Shrimp shells were dried and crushed, soaked in 3mol / L hydrochloric acid for 1h, centrifuged to remove the hydrochloric acid, the precipitate was extracted with chloroform, after 8h, the supernatant was centrifuged to take the supernatant, and the chloroform was recovered by vacuum concentration to obtain the crude red astaxanthin extract .

[0015] The ratio of dried shrimp shell powder to hydrochloric acid is 20g / 100mL; the ratio of shrimp shell powder to chloroform after hydrochloric acid treatment is: 1g / 100mL.

[0016] The yield of the obtained crude astaxanthin extract is not high, and the final extraction rate is about 130 mg / kg shrimp shell.

Example Embodiment

[0017] Example 3

[0018] Shrimp shells were dried and crushed, soaked in 1.5mol / L hydrochloric acid for 5 hours, centrifuged to remove the hydrochloric acid, the precipitate was extracted with chloroform, after extraction for 10 hours, centrifuged to take the supernatant, vacuum concentrated to recover the chloroform, to obtain the red astaxanthin crude extract Things.

[0019] The ratio of dried shrimp shell powder to hydrochloric acid is 10g / 100mL; the ratio of shrimp shell powder to chloroform after hydrochloric acid treatment is: 5g / 100mL.

[0020] The yield of the obtained crude astaxanthin extract is high, and the final extraction rate is about 300 mg / kg shrimp shell.

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PUM

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Abstract

The invention relates to a method for extracting astaxanthin by using procambarus clarkia shell, and belongs to the technical field of aquatic product processing. The method comprises the following steps: using the procambarus clarkia shell as a raw material, crushing the shrimp shell after being dried, soaking the shrimp shell power for 1 to 8 hours in hydrochloric acid by 0.5 to 3 mol per liter, removing the hydrochloric acid in a centrifugal mode, extracting sediment for 8 to 13 hours by chloroform, extracting supernatant in a centrifugal mode, condensing the supernatant in vacuum and recycling the chloroform to obtain crude extract of the astaxanthin, wherein ratio of the dry shrimp shell powder to the hydrochloric acid is 1 to 20 grams per 100 milliliters, and ratio of the shrimp shell powder to the chloroform is 1 to 10 grams per 100 milliliters. The method uses the procambarus clarkia shell to extract the astaxanthin, is quite helpful for improving processing level of waste of agricultural, animal and aquatic products, and generates great economic effect.

Description

technical field [0001] The invention discloses a method for extracting astaxanthin by using the shell of Procambarus clarkii, which belongs to the technical field of aquatic product processing. Background technique [0002] Astaxanthin is astaxanthin, which belongs to carotenoids and is the most widely distributed lutein (belonging to carotenoids) in nature. It is pink in color and has a unique coloring function. It is easily soluble in organic solvents and insoluble in Water is a stable coloring agent and food additive. It can promote the production of antibodies and enhance the immunity of animals. Its ability to resist oxidation and scavenge free radicals is stronger than that of β-carotene and tocopherol. [0003] Chemically synthesized astaxanthin has been approved by the U.S. Food and Drug Administration (FDA) as a food additive, and the price is very expensive, reaching 2000-2500 US dollars per kilogram. The process of artificially synthesizing astaxanthin may be co...

Claims

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Application Information

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IPC IPC(8): C07C403/24
Inventor 过世东刘海英钱飞
Owner JIANGNAN UNIV
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