Method for comprehensively extracting fucoxanthin and brown alga polyphenol from gulfweed

A technology for brown algae polyphenols and fucoxanthin, which is applied in the directions of organic chemistry, color/spectral property measurement, etc., can solve the problems of inability to realize technology popularization and large-scale production, low extraction efficiency and raw material utilization rate, and high production cost, Achieve the effect of low cost, small difference and product safety

Active Publication Date: 2015-11-11
NINGBO UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

This patented describes an improved way to make fuel oxygenates (FO) by removing impurities like sulfur dioxide and other harmful substances found naturally occurring on Earth's crustaceans called fossil fuels. These FO are used widely throughout industry because they contain valuable compounds including carbohydrates, proteins, flavonoids, tannic acid, lignocyanides, polysaccharides, etc., making them useful materials for various applications related to energy storage, biomedical research, cosmeceuticals, nutraceutica, pharmaceuticacy, environmental remediation, and waste management purposes.

Problems solved by technology

This patented technical problem addressed by this patent relates to improving fuel quality through separation techniques like chromatography and filtrations. However, existing processes often result in lower yields due to poor solubility properties associated with fuels containing these components.

Method used

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  • Method for comprehensively extracting fucoxanthin and brown alga polyphenol from gulfweed
  • Method for comprehensively extracting fucoxanthin and brown alga polyphenol from gulfweed
  • Method for comprehensively extracting fucoxanthin and brown alga polyphenol from gulfweed

Examples

Experimental program
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Effect test

Embodiment 1

[0047] process such as figure 1 As shown, the fresh copper algae was frozen at -40°C, taken out after freezing for 15 days, and air thawed at room temperature until the central temperature of the copper algae reached 1°C. into a centrifuge, and centrifuged at 800rpm for 10 minutes to remove water; through repeated freezing and thawing and centrifugation 3 times, the water content of copper algae was controlled to 90%. Weigh 100g of copper algae into a 1000mL conical beaker, add 500mL of 85% (V / V) ethanol aqueous solution, seal the mouth of the conical beaker with a safety film, extract for 1 hour in the dark, and filter. Continue to add 500mL of 85% (V / V) ethanol aqueous solution to the copper algae that has been leached above, seal the mouth of the triangular beaker with a safety film, leaching for 1 hour in the dark, and filter. Repeatedly leached in the dark until the extract was colorless, and the filtrates were combined. Concentrate the above-mentioned filtrate at 40°C....

Embodiment 2

[0050] Freeze the fresh hijiki at -5°C, take it out after freezing for 30 days, and thaw it in the air at room temperature until the center temperature of the hijiki reaches 2°C to complete the freeze-thaw process; put the hijiki Put it into a centrifuge, and remove water by centrifugation at a speed of 10000rpm for 3 minutes; through repeated freezing and thawing and centrifugation for 5 times, the moisture content of Hijiki is controlled to be 58%. Weigh 100g of Hijiki and put it into a 1000mL triangular beaker, add 300mL of 85% (V / V) ethanol aqueous solution, seal the mouth of the triangular beaker with a safety film, leaching for 1 hour in the dark, and filter. Continue to add 300mL of 85% (V / V) ethanol aqueous solution to the above-mentioned copper algae, seal the mouth of the triangular beaker with a safety film, leaching for 1 hour in the dark, filter, and combine the filtrates. Concentrate the filtrate at 40°C. During concentration, when a large amount of precipitation...

Embodiment 3

[0053] Same as the above example 1, the difference is that the fresh copper algae is frozen at -80°C, taken out after freezing for 1 day, and air thawed at room temperature until the central temperature of the copper algae reaches 0°C. Thawing process: put the copper algae into the centrifuge, and centrifuge at a speed of 5000rpm for 5 minutes to remove water; through repeated freezing and thawing and centrifugation for 5 times, the water content of the copper algae is controlled to 50%; the extraction time in the dark is 3 hours; The temperature of low-temperature concentration is 15°C; the organic reagent is acetone; the ratio of copper algae to organic reagent is 100g: 400ml.

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Abstract

The invention discloses a method for comprehensively extracting fucoxanthin and brown alga polyphenol from gulfweed, which comprises the following steps: carrying out repeated freeze-thawing and centrifugation on fresh gulfweed or frozen reserved gulfweed to control the water content of brown alga; adding an organic reagent into the seaweed, leaching in a dark place for 1-24 hours, carrying out vacuum filtration to obtain a leaching solution, repeating the leaching operation until the leaching solution is colorless, merging the leaching solutions, concentrating the leaching solution until abundant precipitate appears in the solution, and filtering to remove the precipitate and obtain the filtrate; crystallizing the filtrate at low temperature, and filtering to obtain fucoxanthin; and adding a fat-soluble solvent into the filtrate, carrying out repeated liquid-liquid extraction until the fat-soluble solvent layer is colorless, merging the fat-soluble solvent layers of multiple extraction processes, and carrying out low-temperature concentration until a greenish yellow solid precipitates in the solution, thereby obtaining the brown alga polyphenol extract. The method has the advantages of high raw material utilization ratio and high extraction efficiency, and is simple to operate.

Description

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Claims

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Application Information

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Owner NINGBO UNIV
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