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Manufacture method of 1, 3-bi-oleic acid-2-palmitic acid triglyceride

The technology of palmitic acid triglyceride and palmitic acid glyceride is applied in the field of preparation of 1,3-dioleic acid-2-palmitic acid triglyceride, which can solve the problem of increasing risk, reducing product yield and increasing environmental protection pressure and other problems, to achieve the effect of short process time, simple process and less three wastes

Inactive Publication Date: 2013-06-19
HANGZHOU HENGNUO SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, in the preparation process, some manufacturers use n-hexane as the solvent, which has the following main disadvantages: the solvent has an impact on the quality of the product, and is not suitable for the use of infant products; after using the solvent, the production capacity is greatly reduced, and the equipment, The energy consumption has risen sharply, and the output has decreased; solvents are flammable and explosive products, which increase the danger during production and transportation; in the recovery of solvents, the pressure of environmental protection is increased
However, this method needs to first generate 2-monoglyceride palmitate from tripalmitin, and then react monoglyceride with oleic acid to generate OPO, but in this way, a process is added, which reduces the yield of the product and increases product cost

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] Embodiment 1: a kind of 1 of this example, the preparation method of 3-dioleic acid-2-palmitic acid triglyceride, its steps are:

[0019] a. Using a solid super acid as a catalyst, glycerin and palmitic acid are esterified in a stainless steel reactor to generate tripalmitin. The molar ratio of glycerol to palmitic acid is 1:3.1, and the amount of the catalyst accounts for the total mass of the entire material in step a. 0.6%, the reaction temperature is 230 ° C, the stirring speed is 120 rpm, and the reaction time is 6 hours;

[0020] b. Using immobilized and localized lipase as a catalyst, the prepared tripalmitin and oleic acid were transesterified in an enamel reactor. The immobilized and localized lipase was Novozym 435, and the molar ratio of oleic acid to tripalmitin It is 3:1, the amount of immobilized and positioned lipase as a catalyst accounts for 15% of the total mass of the entire material in step b, the reaction temperature is 60°C, the stirring speed is...

Embodiment 2

[0021] Embodiment 2: a kind of 1 of this example, the preparation method of 3-dioleic acid-2-palmitic acid triglyceride, its steps are:

[0022] a. Using a solid super acid as a catalyst, glycerin and palmitic acid are esterified in a stainless steel reactor to generate tripalmitin. The molar ratio of glycerol to palmitic acid is 1:3.0, and the amount of the catalyst accounts for the total mass of the entire material in step a. 0.6%, the reaction temperature is 230 ° C, the stirring speed is 120 rpm, and the reaction time is 6 hours;

[0023] b. Using immobilized and localized lipase as a catalyst, the prepared tripalmitin and ethyl oleate were transesterified in an enamel reaction kettle. The immobilized and localized lipase was Lipozyme TM IM, ethyl oleate and tripalmitic acid The molar ratio of glycerides is 4:1, the amount of immobilized and positioned lipase as a catalyst accounts for 20% of the total mass of the entire material in step b, the reaction temperature is 60...

Embodiment 3

[0024] Embodiment 3: a kind of 1 of this example, the preparation method of 3-dioleic acid-2-palmitic acid triglyceride, its steps are:

[0025] a. Using a solid super acid as a catalyst, glycerin and palmitic acid are esterified in a stainless steel reactor to generate tripalmitin. The molar ratio of glycerol to palmitic acid is 1:3.3, and the amount of the catalyst accounts for the total mass of the entire material in step a. 0.6%, the reaction temperature is 230 ° C, the stirring speed is 120 rpm, and the reaction time is 6 hours;

[0026] b. Using immobilized and localized lipase as a catalyst, the prepared tripalmitin and methyl oleate were transesterified in an enamel reactor. The immobilized and localized lipase was Lipozyme RM IM, methyl oleate and tripalmitic acid The molar ratio of glycerides is 2.5:1, the amount of immobilized and positioned lipase as a catalyst accounts for 15% of the total mass of the entire material in step b, the reaction temperature is 60°C, ...

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Abstract

The invention relates to a dairy product, in particular to a manufacture method of 1, 3-bi-oleic acid-2-palmitic acid triglyceride. The manufacture method mainly solves the technical problems that if normal hexane is used as a solvent in manufacture in the prior art, product quality is affect, the normal hexane is not suitable for infant products, and production capacity is reduced; and if monoglyceride is used alone to be in reaction with oleic acid so as to generate OPO, production procedures are increased, production cost is high and the like. According to the manufacture method of the 1, 3-bi-oleic acid-2-palmitic acid triglyceride, solid super acid is used as a catalyst, and glycerol and palmitic acid undergo esterification reaction so as to generate tri-palmitic acid glyceride. Immobilization positioning lipase is used as a catalyst, the manufactured tri-palmitic acid glyceride undergoes ester exchange with one of oleic acid, methyl oleate, and ethyl oleate, and the 1, 3-bi-oleic acid-2-palmitic acid triglyceride is manufactured.

Description

technical field [0001] The invention relates to a dairy product, in particular to a preparation method of 1,3-dioleic acid-2-palmitic acid triglyceride. Background technique [0002] 1,3-Dioleic acid 2-palmitic acid triglyceride, referred to as OPO, exists in the fat of human breast milk in the natural environment. In 2008, the Ministry of Health of the People's Republic of China announced No. 13, approving 1,3-dioleic acid 2-palmitic acid triglyceride as a nutritional fortifier, which can be used in infant milk powder, and stipulated the production technical indicators and fortified amount. Breast milk is the main source of nutrition and energy for infants and young children. Human breast milk contains 3%-4% fat, of which 98% are triglycerides. And this part of the oil has a strong structure. It contains 20%-25% palmitic acid and 30%-35% oleic acid. Most of the palmitic acid is distributed on the Sn-2 position of the triglyceride, while most of the oleic acid is distrib...

Claims

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Application Information

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IPC IPC(8): C12P7/64
Inventor 叶长青朱晓青王晨
Owner HANGZHOU HENGNUO SCI & TECH
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