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Method for preparing fatty acid phytosterol ester employing catalysis of silicon dioxide

A technology of phytosterol esters and phytosterols, which is applied in the field of silica catalyzed preparation of fatty acid phytosterol esters to achieve the effects of reduced usage, high reactivity, and good color

Active Publication Date: 2014-01-15
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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  • Method for preparing fatty acid phytosterol ester employing catalysis of silicon dioxide
  • Method for preparing fatty acid phytosterol ester employing catalysis of silicon dioxide
  • Method for preparing fatty acid phytosterol ester employing catalysis of silicon dioxide

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0060] Example 1: Preparation of fatty acid phytosterol ester

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

[0062] Fatty acids are oleic acid, caprylic acid, capric acid, and behenic acid. Phytosterol is a mixture of 43.48%-sitosterol, 25.06% stigmasterol, 25.90% campesterol, and 1.01% rapeseed sterol (the mixture has a purity of 95.45%), catalyst It is alumina, silica, silica gel. The molar ratio of fatty acid to phytosterol, the amount of catalyst (weight percentage in the entire reaction system), the esterification temperature, and the reaction time are shown in Table 1. The entire reaction process is carried out under vacuum until the reaction is completed, and the degree of completion ...

Embodiment 2

[0070] Example 2: Detection of element content of fatty acid phytosterol esters prepared under different reaction conditions

[0071] Table 2: Detection of element content 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 detection of the element content adopts the ICP / AES method.

[0074] From the test results, it can be seen that when the phytosterol is esterified by a catalyst containing a metal element, a certain amount of the metal element will remain in the reaction system. If the fatty acid phytosterol ester is used in the food field, the residue of the metal element will be Causes potential harm to the human body, so it is necessary to minimize or avoid metal residues in the esterification reaction. The test results of silica show that silica does not have any residue during the esterification reaction....

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

colour

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 color of grease is detected by the GB / T 22460-2008 method, R is the abbreviation for red, Y is the abbreviation for yellow, and the number is the color value measured by this method. The higher the color value, the darker the color.

[0080] From the above color detection data, the preparation of fatty acid phytosterol esters using silica as a catalyst obtains a good grease color. Compared with silica gel, the ...

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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 catalyzed by silicon dioxide. Background technique [0002] Phytosterols are physically purified from corn, soybeans and other grains, and have the characteristics of high nutritional value and strong physiological phytosterol activity. Phytosterols can reduce the risk of cardiovascular disease by lowering cholesterol. It is widely used in food, medicine, cosmetics, animal growth agents and paper processing, printing, textiles and other fields, especially in Europe as a food additive is very common, widely used in food to reduce human cholesterol. Due to the poor solubility of plant sterols, it is necessary to prepare corresponding fatty acid sterol esters to improve the solubility of the product, thereby improving the human body's absorption of plant sterols. Therefore, the preparation of fatty acid phytosterol esters has become the focus of attention, and there are many relate...

Claims

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Application Information

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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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