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Method for synthesizing corn oil rich in caprylin enzymatically under supercritical carbon dioxide (CO2) state

A caprylic acid glyceride, enzymatic synthesis technology, used in edible oil/fat, bulk chemical production, food science, etc.

Active Publication Date: 2013-05-01
南宁市桂福园农业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The present invention provides in supercritical CO 2 A method for enzymatically synthesizing corn oil rich in caprylic acid glycerides in the state, to solve the problem of not using caprylic acid and corn oil in supercritical CO 2 Problems with the enzymatic synthesis of caprylylglyceride-enriched corn oil under state enhanced functional properties of corn oil

Method used

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Examples

Experimental program
Comparison scheme
Effect test

specific Embodiment approach 1

[0017] Specific implementation mode one: the present implementation mode is as follows:

[0018] Step 1: Step 1: Pre-reaction treatment: Add octanoic acid and corn oil in a molar ratio of 3:1 in a stainless steel autoclave, and simultaneously add lipase Novozym 435 with a total mass of 3% to 5%, and then add stirring magnetic beads;

[0019] Step 2: Replacement gas: Fill the stainless steel autoclave with 3-4MPa of H 2 ; with H 2 Replace the air in the stainless steel autoclave 3 to 4 times, and the pressure is less than 4MPa;

[0020] Step 3: Leak test: test the leak of the stainless steel autoclave filled with gas;

[0021] Step 4: Evacuate the hydrogen in the stainless steel autoclave and fill it with CO 2 , the pressure is 8~13MPa;

[0022] Step 5: Preheating: Put the stainless steel autoclave into a constant temperature water bath at 45-65°C to preheat for 20 minutes;

[0023] Step 6: Heating reaction: Put the stainless steel autoclave into a 60°C constant temperatur...

specific Embodiment approach 2

[0028] Embodiment 2: This embodiment differs from Embodiment 1 in that the amount of lipase Novozym 435 added in Step 1 is 4% of the total mass of caprylic acid and corn oil, and other compositions and steps are the same as Embodiment 1.

specific Embodiment approach 3

[0029] Specific embodiment three: the difference between this embodiment and specific embodiment one is that CO is charged in step four 2 The pressure is 11MPa, and the other composition and steps are the same as in Embodiment 1.

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Abstract

The invention relates to a method for synthesizing corn oil rich in caprylin enzymatically under a supercritical carbon dioxide (CO2) state. The problem that the method for synthesizing the corn oil rich in the caprylin enzymatically by using caprylic acid and corn oil under the supercritical CO2 state is unavailable at present is solved. The method is implemented by the following steps of: placing the caprylic acid, the corn oil and lipase into a high-pressure kettle; reacting in a water bath kettle under the supercritical CO2 state; after the reaction is finished, taking out the product; and centrifuging the product to obtain the corn oil rich in the caprylin. According to gaseous phase analysis, the content of medium chain fatty acid with physiological activity of the fatty acid of thereaction product is up to 32.00 percent, so the functional characteristics of the corn oil are improved. The corn oil rich in the caprylin is synthesized enzymatically under the supercritical CO2 state, so the mass transfer resistance in the enzyme reaction process is greatly reduced, the enzyme reaction rate is increased, and most important of all, generation of trans fatty acid is controlled.

Description

Technical field: [0001] The present invention relates to a kind of in supercritical CO 2 A method for enzymatically synthesizing corn oil rich in caprylic acid glycerides under state conditions. Background technique: [0002] In recent years, foreign studies have found that eating medium-chain fatty acids in the diet can reduce body weight and body fat content, and promote energy consumption. Chain fatty acids can effectively reduce fat accumulation and postprandial blood triglyceride levels in healthy people. [0003] Corn oil, also known as corn germ oil, has an unsaturated fatty acid content of more than 80%, mainly linoleic acid and oleic acid, and linoleic acid accounts for more than 50% of the total oil. High quality cooking oil. Linoleic acid is an essential fatty acid that cannot be synthesized by the human body itself. It has the functions of lowering human cholesterol, lowering blood pressure, softening blood vessels, preventing and improving arteriosclerosis, r...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C12P7/64A23D9/04
CPCY02P20/54
Inventor 于殿宇徐渐张秋楠张少明王俊国江连洲胡立志王立琦齐颖张佳宁李越王雪李志平时敏孙立斌景雪解桂东刘飞
Owner 南宁市桂福园农业有限公司