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Preparation method of ruminant trans-fatty acid

A technology for trans fatty acids and ruminants, which is used in fatty acid preparation/refining, fatty acid production, animal feed, etc., can solve the problems of high temperature and pressure, cannot reflect the whole picture of ruminant trans fatty acids, and maintain high temperature and high pressure, and achieves high temperature and pressure. The effect of low consumption, strong operability and simple process

Pending Publication Date: 2022-03-15
NANCHANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the reaction process of this method, the temperature and pressure are relatively high and high temperature and high pressure need to be maintained for a long time, which has certain risks. In addition, ruminant trans fatty acids are a mixture of trans monounsaturated fatty acids, although 11t18:1 is a ruminant Trans fatty acids Representative fatty acids, but cannot reflect the full picture of ruminant trans fatty acids

Method used

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  • Preparation method of ruminant trans-fatty acid
  • Preparation method of ruminant trans-fatty acid
  • Preparation method of ruminant trans-fatty acid

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Example 1 - Preparation of ruminant trans fatty acids

[0021] (1) Preparation of butter free fatty acid. In a constant temperature water bath at 90°C, put a certain amount of butter into a beaker, wait until the butter is completely melted into a liquid, add it into a 1mol / L NaOH ethanol solution, the ratio of solid to liquid is 1:6, stir magnetically for 2 hours, carry out saponification reaction, take out After the beaker is cooled to room temperature, the saponified product is obtained by vacuum filtration, and then 0.5mol / L sulfuric acid solution is added to the saponified product, stirred in a water bath at 50°C to dissolve it, and then separated into three layers , so that the pH of the upper layer oil is about 2-3, take the upper layer oil, wash with hot purified water until neutral, and obtain butter free fatty acid.

[0022] (2) Urea inclusion method to remove saturated fatty acids. Add urea to absolute ethanol in a certain proportion, and carry out rotary r...

Embodiment 2

[0023] The single factor test of embodiment 2-urea and butter free fatty acid ratio

[0024] Weigh 10g of butter free fatty acid gained in step (1), step (2) is 1: 3 according to the ratio of urea and ethanol, inclusion time is 12h condition, butter free fatty acid and urea ratio are 1: 1, 1: 1.5, 1: 2. 1:2.5 and 1:3 were carried out to investigate the effect of the ratio of butter free fatty acid to urea on the content of ruminant trans fatty acid in the product. The results are shown in Table 1.

[0025] The influence (area %) of the ratio of free fatty acid of table 1 butter and urea on product trans monounsaturated fatty acid content

[0026]

[0027] Note: Fatty acid refers to the fatty acid composition and content of the prepared product, where SFA: saturated fatty acid; MUFA: monounsaturated fatty acid; PUFA: polyunsaturated fatty acid; C-MUFA: cis monounsaturated fatty acid; T-MUFA: trans monounsaturated fatty acid; CLA: conjugated linoleic acid.

Embodiment 3

[0028] The single factor test of embodiment 3-ethanol and butter free fatty acid ratio

[0029] The ratio of butter free fatty acid to urea is 1:1, and the ratio of urea to ethanol is 1:1, 1:2, 1:3, 1:4, 1:5. The impact on the content of ruminant trans fatty acids in the product is shown in Table 2.

[0030] The influence (area %) of the ratio of free fatty acid in table 2 butter and ethanol on trans monounsaturated fatty acid content in the product

[0031]

[0032]

[0033] Note: fatty acid refers to the fatty acid composition and content of the prepared product, where SFA: saturated fatty acid MUFA: monounsaturated fatty acid PUFA: polyunsaturated fatty acid C-MUFA: cis monounsaturated fatty acid T-MUFA: trans monounsaturated fatty acid Fatty Acid CLA: Conjugated Linoleic Acid

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Abstract

The invention discloses a ruminant trans-fatty acid preparation method, which comprises: (1) carrying out a saponification reaction on butter and a sodium hydroxide ethanol solution under a 85-90 DEG C water bath condition, adding a sulfuric acid solution, stirring under a 45-50 DEG C water bath condition for 20-30 min, dissolving, standing, and taking the upper layer oily matter to obtain butter free fatty acid; (2) adding urea into absolute ethyl alcohol according to a certain proportion, carrying out rotary reflux at 70-85 DEG C, then adding a certain amount of butter free fatty acid, carrying out reflux at 77 DEG C, and carrying out inclusion at-5 DEG C; performing vacuum suction filtration to obtain filtrate, performing rotary evaporation on the filtrate at 65 DEG C, removing ethanol, dissolving with deionized water at 60 DEG C, extracting upper oily matter, drying with anhydrous sodium sulfate, and filtering to obtain the ruminant trans-fatty acid product. The preparation method of the ruminant trans-fatty acid is simple in process, high in operability, low in production cost and energy consumption and easy to realize large-scale continuous production.

Description

technical field [0001] The invention belongs to the technical field of trans fatty acid preparation, and in particular relates to a preparation method of ruminant trans fatty acid. Background technique [0002] At present, there are two main methods to prepare high-content trans fatty acid products of ruminants: first, change the feeding of ruminants, and the composition of trans fatty acids in meat and dairy products of animals varies with the season of stocking and the composition of fatty acids in feed The trans fatty acids of ruminants are different, and the types of trans fatty acid isomers of ruminants are rich. It is reported in the literature that when ruminants use grass as the main feed in summer, the trans fatty acids of dairy products ruminants are 57% higher than that of feed in winter; Adding 5.2% sunflower oil (containing 69% linoleic acid) can also increase the content of trans fatty acids in ruminants. Therefore, by changing the feed to feed dairy cows, but...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C11C1/04C11C1/02A23K20/158
CPCC11C1/025C11C1/04A23K20/158
Inventor 李静邓泽元牛仙
Owner NANCHANG UNIV
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