A method for enriching alkoxyglycerol in shark liver oil

A technology of alkoxyglycerin and shark liver oil, which is applied in the field of marine biology, can solve the problems of waste of nutrients, consumption of large caustic soda, pollution of the environment, etc., and achieve the effect of preventing waste

Active Publication Date: 2015-10-28
OCEAN UNIV OF CHINA
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  • Abstract
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  • Application Information

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Problems solved by technology

[0004] In order to obtain a high content of alkoxyglycerol, the usual practice is to completely saponify the shark liver oil first, extract the unsaponifiable matter therein and then further purify, and the resulting product is a mixture of free alkoxyglycerin, cholesterol and vitamin E, etc. This method usually needs to consume a large amount of caustic soda and toxic and volatile organic solvents, and the waste water produced will also pollute the environment. In addition, other components beneficial to the human body contained in shark liver oil such as n-3 series polyunsaturated fatty acids (such as eicosapentaenoic acid EPA and docosahexaenoic acid DHA) will also be removed in the form of saponification, resulting in waste of nutrients

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0059] Weigh 100 g of natural shark liver oil containing 8% alkoxyglycerol (EPA and DHA contents are 4.13% and 7.59%, respectively) in a 250 mL reactor, add 40 g of absolute ethanol and immobilized Candida antarctica lipase Lipozyme435 (Novozymes Provided by the company) 3.0g, heated to 50°C and stirred for 24h. After the reaction, the reaction mixture was filtered, and the resulting oily mixture was distilled under reduced pressure (70°C, -0.088MPa) to remove unreacted ethanol, and then molecularly distilled (distillation temperature 150°C, distillation pressure 0.1Pa) ) to remove the fatty acid ethyl ester in the reaction mixture to obtain 40 g of a product containing 20.59% alkoxyglycerol, and the contents of EPA and DHA in the product were 7.72% and 22.35%, respectively.

Embodiment 2

[0061] Weigh 50g of shark liver oil containing 20% ​​alkoxyglycerol (EPA and DHA contents are 0.93% and 2.59% respectively) and mix with 30g of anhydrous isopropanol, stir and preheat to 45°C, add 2.5g of immobilized lipase Lipozyme TL IM (provided by Novozymes), stirred for 12 hours. After the reaction, the reaction mixture was filtered, and the resulting oily mixture was distilled under reduced pressure (70°C, -0.088MPa) to remove unreacted isopropanol, and then molecularly distilled (distillation temperature 160°C, distillation pressure 0.1Pa) conditions) to remove the fatty acid isopropanol ester in the reaction mixture, the product containing 36.62% alkoxyglycerol can be obtained, and the contents of EPA and DHA are 1.34% and 8.21% respectively.

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Abstract

The invention provides a method for enriching alkoxy glycerol in shark liver oil. The method comprises the following steps: mixing shark liver oil, short chain alcohol and lipase to react, and removing the unreacted raw materials and byproducts to obtain the alkoxy-glycerol-enriched product. According to the method, the enzymatic alcoholysis and molecular distillation techniques are combined to enrich the alkoxy glycerol in the shark liver oil. The method does not need to consume caustic soda or toxic and volatile organic solvents, does not generate waste harmful to the environment, can reserve natural n-3 polyunsaturated fatty acids in the shark liver oil, and prevents waste of nutrients.

Description

technical field [0001] The invention relates to the technical field of marine life, in particular to a method for enriching alkoxyglycerol in shark liver oil. Background technique [0002] Alkoxyglycerols are lipids containing ether bonds that exist in human cells, body fluids, breast milk and bone marrow. The type depends on the length and degree of unsaturation of the alkyl chain. Common alkoxyglycerols Alkyl chains are mainly C12:0 (the alkyl chain contains 12 carbon atoms and does not contain double bonds), C14:0 (the alkyl chain contains 14 carbon atoms and does not contain double bonds), C16:0 (alkane Contains 16 carbon atoms in the base chain and does not contain a double bond), C16:1 (contains 16 carbon atoms in the alkyl chain and contains a double bond), C18:0 (contains 18 carbon atoms in the alkyl chain and does not contain contains a double bond) and C18:1 (18 carbon atoms in the alkyl chain and contains a double bond). As a special antioxidant, alkoxyglycerol ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C12P7/18A23L1/30A23L33/10
Inventor 孙兆敏李兆杰薛长湖郭正霞徐杰薛勇王玉明王静凤
Owner OCEAN UNIV OF CHINA
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