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A kind of production method of diglyceride

A diglyceride and production method technology, which is applied in the field of diglyceride production technology, can solve the problems of low conversion rate and low diglyceride content, and achieve the effects of fast reaction rate, improved conversion rate, and high conversion rate

Active Publication Date: 2018-12-11
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, studies on the glycerolysis reaction of oil show that in a solvent-free system, the content of diglyceride in the product of enzymatic glycerolysis reaction is not high, that is, there is a problem that the conversion rate of oil is not high during glycerolysis to produce diglyceride

Method used

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  • A kind of production method of diglyceride

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Canola rapeseed oil 500g is as in the flat-bottomed flask 1, adds the glycerin of oil 10% and the water of 0.5%, then adds lipase Lipozyme RM liquid enzyme (Novozymes company product) according to 5IU / g oil, magnetic stirrer stirring reaction, temperature of reaction Controlled at 30°C. After reacting for 3hr, the reactants in the flask 1 were centrifuged, the upper layer was grease, and the lower layer was a mixture of glycerol, lipase and water. The oil phase in the upper layer of the reaction was heated to 60° C., placed in flask II for 3 hours, then cooled and returned to flask I, and the mixture of glycerin, enzyme and water obtained by centrifugation in the previous step was added to continue the reaction for 3 hours. Repeat the above-mentioned operation of transferring the oil from flask I to flask II and then return to flask I 10 times, which is equivalent to 10 cycles of all the oil participating in the reaction to obtain the reaction product. The diglyceride i...

Embodiment 2

[0029] Canola rapeseed oil 500g is as in round bottom flask 1, adds grease 10% glycerol and 3% water, then adds lipase Lipozyme RM liquid enzyme (Novozymes company product) according to 100IU / g grease, stirring reaction, reaction temperature is 40 ℃. After reacting for 3 hours, 56 g (10% reactant) was taken from the reaction system and centrifuged, the upper layer was oil, and the lower layer was a mixture of glycerol and enzyme in water. The oil phase in the upper layer of the reaction was heated up to 150° C., placed in flask II for 1 hr, then cooled and returned to flask I, and the mixture of aqueous glycerin and enzyme obtained by centrifugation in the previous step was added to continue the reaction for 3 hr. Repeat the above-mentioned operation of transferring the oil from flask I to flask II and then return to flask I 10 times, which is equivalent to one cycle of all the oil participating in the reaction to obtain the reaction product. The diglyceride index of the reacti...

Embodiment 3

[0031] Canola rapeseed oil 500g is as in flat-bottomed flask 1, adds grease 10% glycerol and 1% water, then adds lipase Lipozyme RM liquid enzyme (Novozymes company product) according to 50IU / g grease, magnetic stirrer stirring reaction, temperature of reaction is controlled as 45°C. After reacting for 3hr, the reactants in the flask 1 were centrifuged, the upper layer was grease, and the lower layer was a mixture of glycerol, enzyme and water. The oil phase in the upper layer of the reaction was heated to 100° C., placed in flask II for 12 hours, then cooled and returned to flask I, and the mixture of glycerin, enzyme and water obtained by centrifugation in the previous step was added to continue the reaction for 3 hours. Repeat the above-mentioned operation of transferring the oil from flask I to flask II and then return to flask I three times, which is equivalent to three cycles of all the oil participating in the reaction to obtain the reaction product. The diglyceride ind...

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Abstract

The invention discloses a method for producing diglyceride, which comprises the following steps: 1)employing lipase for performing a glycerolysis reaction of grease in a container I; 2)separating glycerin and lipase of an oil phase and conveying in a container II, wherein the temperature of grease in the container II is 60-150 DEG C, stay time of grease in the container II is 1-12 hours, then cooling to the temperature of the glycerolysis reaction, returning to the container I, adding glycerin and lipase, continuously performing the glycerolysis reaction in the step 1); and 3)repeating the above reaction, generating 1-10 times of circulation on grease to obtain the diglyceride-rich reaction products. According to the invention, diglyceride in the reaction products enables configuration conversion through a heating or chemical catalysis method, so that reaction products with higher diglyceride content can be obtained. The method can increase the diglyceride conversion rate and is easily operated.

Description

technical field [0001] The invention relates to a production process of diglyceride. The process adopts a glycerolysis method, and through temperature-variable transition operation of reaction products, the conversion rate of diglyceride is improved, and the process is easy to operate. Background technique [0002] Diacylglycerol is a fat molecule with only two fatty acid chains. Diacylglycerol can be used as an emulsifier, a fat plasticity modifier or as a base for food, medicine, cosmetics, etc. Studies in recent years have found that the absorption and metabolism patterns of diglyceride and triglyceride are different. Diglyceride is more easily converted into energy and utilized in the body, while triglyceride is easier to accumulate in the body. Eating oils containing diglycerides has the effect of inhibiting weight gain, so diglycerides can be eaten as a healthy oil. [0003] 甘油二酯可以通过多种工艺生产,相关领域已经有很多专利公开了相应的生产方法,如CN988083043C、CN028270940C、CN031138624C、CN200310112327C、C...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C12P7/64
CPCC12P7/6445
Inventor 王永华王卫飞杨博李志刚王方华蓝东明
Owner SOUTH CHINA UNIV OF TECH
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