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A kind of industrial production method and product of 1,3-dioleic acid-2-palmitic acid triglyceride

A technology of palmitic acid triglyceride and production method, which is applied in the field of oils and fats, can solve the problems of increasing production costs, harmful substances, harsh conditions, and low OPO content, and achieve the effects of avoiding adverse effects, reducing acyl transfer, and reducing workload

Active Publication Date: 2022-04-15
JIANGNAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the production method is obtained by an acid hydrolysis reaction
The OPO content in the product obtained by one-time acid hydrolysis is relatively low, and the substrate ratio of the fatty acid and triglyceride used is relatively high, so the conditions for the subsequent deacidification process are also relatively harsh, thus increasing production costs and Lead to the production of harmful substances in the deacidification process

Method used

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  • A kind of industrial production method and product of 1,3-dioleic acid-2-palmitic acid triglyceride
  • A kind of industrial production method and product of 1,3-dioleic acid-2-palmitic acid triglyceride
  • A kind of industrial production method and product of 1,3-dioleic acid-2-palmitic acid triglyceride

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] Establishment of enzymatic acid hydrolysis prediction model:

[0037] In the reaction system, the content of triglyceride is m, and the content of fatty acid is h. During the reaction, the lipase used is sn-1,3 position-specific lipase, and the fatty acid conforms to sn-1,3 position randomly distributed. In the whole reaction system, the types of fatty acids are defined as n types, different fatty acids are defined as Xi, and the reaction conditions are used to control the acyl transfer. The change of sn-2 fatty acid is small, so the change of sn-2 fatty acid can be ignored. In the system, the fatty acids involved in the reaction are mainly triglyceride sn-1,3 fatty acids and added free fatty acids. For a single fatty acid Xi, the molar percentage of Xi fatty acid on the sn-1,3 position of triglyceride can be expressed as Msn-1 / -3Xi, and the molar percentage of free fatty acid Xi can be expressed as MXi, therefore, when the system reaches the reaction equilibrium, Acc...

Embodiment 2

[0058] With palmitic acid content of 91.2%, sn-2 palmitic acid content of 84.4% palm stearin as starting material, high oleic sunflower oil fatty acid as acyl donor, sn-1, 3-position selective lipase As a catalyst, through the acid hydrolysis fatty acid equilibrium model, the fatty acid composition and distribution of the enzymatic hydrolysis products with different substrate ratios are calculated under reaction equilibrium.

[0059] Table 2. Fatty acid characteristics of palm stearin and high oleic sunflower oil

[0060] stearin High Oleic Sunflower Oil Fatty acid (mol%) total sn-2 sn-1,3 total C14:0 1.4 0.5 1.85 C16:0 91.2 84.4 94.6 3.8 C18:0 3.1 4.5 2.4 3.1 C18:1omega-9 3.6 8.8 1 84.8 C18:2ω-6 0.7 1.8 0.15 7.5 C18:3ω-3 0.4

[0061] Table 3. Theoretical equilibrium values ​​of sn-1,3 fatty acids and triglycerides in one acid hydrolysis

[0062]

[0063] From the above results, it can...

Embodiment 3

[0088] Palm stearin with a palmitic acid content of 82.4% and a sn-2 palmitic acid content of 73.5% was selected as a starting material to produce 1,3-dioleic acid-2- The fatty acid composition and distribution of palmitic acid triglyceride products, palm stearin and high oleic peanut oil are shown below.

[0089] Table 10. Fatty acid characteristics of palm stearin and high oleic peanut oil (%)

[0090]

[0091] Table 11. Theoretical equilibrium values ​​of sn-1,3 fatty acids and triglycerides in one acid hydrolysis

[0092]

[0093]

[0094] From the above results, it can be seen that with the increase of the substrate ratio, the content of sn-1,3 palmitic acid also decreases continuously, but the reduction range decreases. When the substrate ratio is greater than 10:1, the reduction of palmitic acid is less than 3%. Using the first enzymatic acid hydrolysis product as the substrate, and then using the same proportion of fatty acids for secondary acid hydrolysis, t...

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Abstract

The invention discloses an industrial production method of 1,3-dioleic acid-2-palmitic acid triglyceride and its products. The minimum substrate ratio required for the reaction is predicted by establishing an enzyme-catalyzed acid hydrolysis reaction fatty acid balance model, and Using fatty acids derived from high oleic vegetable oils as acyl donors to replace palm stearin sn-1,3 palmitic acid through one-step acid hydrolysis; using low temperature procedures to fractionate and separate palmitic acid, tripalmitin and part of glycerides to obtain liquid oil; then the liquid oil is subjected to the second step of acid hydrolysis, after the reaction is completed, part of the glyceride is removed by lipase G50, and the fatty acid is removed by vacuum distillation to obtain the product. The present invention predicts the substrate ratio in the reaction process by establishing a model, greatly reduces the workload of the process optimization process, and the product obtained through the two-step acid decompression coupling low-temperature program fractionation has less free fatty acid usage and more harmful substances. Low, greatly saving the production cost, suitable for industrial production.

Description

technical field [0001] The invention belongs to the technical field of oils and fats, and in particular relates to an industrial production method of 1,3-dioleic acid-2-palmitic acid triglyceride and a product thereof. Background technique [0002] Breast milk is the best food for babies, it provides babies with various nutrients, including lipids, carbohydrates, proteins and other physiologically active substances. Fat in breast milk accounts for 3-5% of the total milk and provides more than 50% of the energy for the baby. Breast milk lipids are a very complex system, containing more than 200 fatty acids and numerous triglyceride types, and there are also a variety of complex lipids, including sterols, glycosphingolipids, and fat-soluble vitamins. The molecular type, content and configuration of breast milk lipids are crucial to the growth and development of infants, especially lipids with important physiological functions. [0003] The content of triglycerides in breast ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C12P7/6458
CPCC12P7/6454
Inventor 邹孝强徐林海晁仲昊
Owner JIANGNAN UNIV
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