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A method for the preparation of fatty acid phytosterol esters catalyzed by silicon dioxide

A technology of phytosterol esters and phytosterols, which is applied in the field of silicon dioxide catalyzed preparation of fatty acid phytosterol esters to achieve the effects of high purity, good color, and good reaction purity

Active Publication Date: 2015-09-16
WILMAR SHANGHAI BIOTECH RES & DEV CENT
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] From the above preparation methods of fatty acid phytosterol esters, because the catalysts used have certain defects, after the reaction, the aftertreatment of fatty acid sterol esters brings certain problems, so there is an urgent need for a green, environmentally friendly, Preparation method of non-polluting, high-efficiency, and harmless fatty acid phytosterol esters

Method used

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  • A method for the preparation of fatty acid phytosterol esters catalyzed by silicon dioxide
  • A method for the preparation of fatty acid phytosterol esters catalyzed by silicon dioxide
  • A method for the preparation of fatty acid phytosterol esters catalyzed by silicon dioxide

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0060] Embodiment 1: the preparation of fatty acid phytosterol ester

[0061] The preparation method is: put fatty acids and phytosterols into a clean and dry three-neck flask according to the ratio in Table 1, heat to 130°C until a uniform oily substance is formed, and then react under vacuum according to the conditions shown in Table 1 , the vacuum pressure is below 4mBar.

[0062] Fatty acid is oleic acid, caprylic acid, capric acid, behenic acid, phytosterol is a mixture of 43.48%-sitosterol, 25.06% stigmasterol, 25.90% campesterol, 1.01% brassicasterol (the mixture has a purity of 95.45%), catalyst For alumina, silica, silica gel. The molar ratio of fatty acid and phytosterol, the consumption of catalyst (in the weight percentage in whole reaction system), esterification temperature, reaction time are as shown in table 1, and whole reaction process is carried out under vacuum, until reaction is finished, and reaction completion degree can be determined by HPLC for monit...

Embodiment 2

[0070] Embodiment 2: Detection of the element content of the fatty acid phytosterol ester prepared under different reaction conditions

[0071] Table 2: Element content detection of fatty acid phytosterol esters prepared under different reaction conditions

[0072] experiment number

Detection of metal elements

detection value

1－5

Al

251mg / kg-755mg / kg

6－21

Si

not detected

[0073] The content of this element was detected by ICP / AES method.

[0074] Known from this test result, when carrying out the esterification of phytosterol by the catalyst containing metal element, there will be a certain amount of metal element remaining in the reaction system, if this fatty acid phytosterol ester is used in food field, then the residue of this metal element will be Potential harm to the human body, so it is necessary to minimize or avoid the residue of metal elements in the esterification reaction. The test results of silicon ...

Embodiment 3

[0075] Example 3: Color detection of fatty acid phytosterol esters prepared under different reaction conditions

[0076] Table 3: Color detection of fatty acid phytosterol esters prepared under different reaction conditions

[0077] experiment number

color

1-5

0.5R, 5Y

6

0.5R,5Y

7

0.5R,5Y

8

0.5R,5Y

9

0.6R,5Y

10

0.4R,4Y

11

0.4R,4Y

12

0.5R,5Y

13

0.5R,5Y

[0078] 14

0.5R,5Y

15

0.5R,5Y

16

0.5R,5Y

17

0.5R,5Y

18

0.5R,5Y

19

0.5R,5Y

20

0.5R,5Y

21

0.5R,5Y

22

7R,10Y

23

7R,10Y

24

7R,10Y

[0079] The detection of oil color is carried out according to the GB / T 22460-2008 method. R is the abbreviation of red, Y is the abbreviation of yellow, and the number is the color value measured by this method. The high...

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Abstract

The invention provides a method for preparing a fatty acid phytosterol ester employing catalysis of silicon dioxide. According to the method, the silicon dioxide is adopted as a catalyst of fatty acid and phytosterol ester; the fatty acid phytosterol ester prepared by adopting the catalyst has the advantages of being light in color and luster, free of metal or silicon ion residue or the like, and can be applied to large-scale preparation of the fatty acid phytosterol ester.

Description

technical field [0001] The invention relates to a method for preparing fatty acid phytosterol esters by catalyzing silicon dioxide. Background technique [0002] Phytosterols are obtained through physical purification from corn, soybeans and other grains. They have the characteristics of high nutritional value and strong physiological phytosterol activity. Phytosterols may reduce the risk of cardiovascular disease by lowering cholesterol. It is widely used in food, medicine, cosmetics, animal growth agents, paper processing, printing, textiles and other fields, especially in Europe as a food additive, and is widely used in food to reduce human cholesterol. Due to the poor solubility of phytosterols, it is necessary to prepare corresponding fatty acid sterol esters to improve the solubility of the product, thereby improving the absorption of phytosterols by the human body. Therefore, the preparation of fatty acid phytosterol esters has become the focus of attention, and the...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C07J9/00C07J75/00A61K8/63A23L1/30A23D9/007A23L33/11
Inventor 王勇姜元荣郭涛
Owner WILMAR SHANGHAI BIOTECH RES & DEV CENT
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