Method for extracting vitamin E from vegetable oil deodorization distillate

A technology for deodorizing distillates and vitamins, applied in the direction of microorganism-based methods, biochemical equipment and methods, microorganisms, etc., can solve problems such as difficulties, high labor intensity, environmental pollution, etc., and achieve beneficial recycling and utilization, and the reaction process Easy, no environmental pollution effect

Inactive Publication Date: 2010-09-15
ZHEJIANG UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the same reaction, the methyl esterification and transesterification of fatty acids and neutral oils will affect each other, and it is difficult to control the reaction process.
Patent CN1693472 combines molecular distillation and lipase technology to convert fatty acids and neutral oils in oils into fatty acid methyl esters, so that the reaction can be carried out under mild conditions, which greatly simplifies the reaction steps and has no environmental pollution. A kind of lipase is developed, the methyl esterification and transesterification of fatty acid and neutral oil will affect each other in the reaction, and there is also the problem that the control of the reaction process is relatively difficult
[0004] In summary, using strong acid and strong base to catalyze esterification and deodorization distillate, and then using high vacuum distillation or supercritical extraction technology to separate vitamin E, this process is relatively mature, but the whole process has many unit operations, labor intensity is high, and environmental pollution is serious
However, when lipase is used to simultaneously catalyze the esterification of fatty acids and neutral oils in the deodorized distillate, there are disadvantages such as difficulty in reaction control.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] 1. Get 200g rapeseed oil deodorization distillate and dissolve in 600ml acetone-methanol mixed solvent (the volume ratio of acetone and methanol is 3: 1), the consumption of described mixed solvent is 3ml / g vegetable oil deodorization distillate. Starting from 50°C, slowly cool down to -5°C and crystallize for 18 hours, take out the crude sterols by suction filtration, and repeat the above crystallization operation for 4 hours; evaporate and concentrate the filtrate under reduced pressure at 65°C for 45 minutes to obtain the deodorized distillate from which sterols have been removed. Material 173g.

[0034]2. Molecular distillation is carried out on the deodorized distillate that removes sterols, the distillation temperature is 220°C, the operating pressure is 0.01torr, the feed temperature is 80°C, and the rotation speed is 150r / min to obtain the distillate and residual liquid; the components of the distillate It is fatty acid / vitamin E / glyceride concentrate, mainly co...

Embodiment 2

[0037] 1. Get 200g rapeseed oil deodorization distillate and dissolve in 800ml acetone-methanol mixed solvent (the volume ratio of acetone and methanol is 5: 1), the consumption of described mixed solvent is 4ml / g vegetable oil deodorization distillate. Starting from 60°C, slowly cool down to -5°C to crystallize, crystallize for 24 hours, take out the crude sterols by suction filtration, repeat the above crystallization operation again for 8 hours; evaporate and concentrate the filtrate under reduced pressure at 65°C for 45 minutes to obtain the deodorized distillate with sterols removed Material 180g.

[0038] 2. The deodorized distillate from which sterols have been removed is subjected to molecular distillation operation, the distillation temperature is 230°C, the operating pressure is 0.03torr, the feed temperature is 90°C, and the rotation speed is 180r / min to obtain the distillate and residual liquid; the components of the distillate It is fatty acid / vitamin E / glyceride ...

Embodiment 3

[0041] 1. Get 200g soybean oil deodorization distillate and dissolve in 700ml acetone-methanol mixed solvent (the volume ratio of acetone and methanol is 4: 1). Starting from 60°C, slowly cool down to -5°C and crystallize for 20 hours, take out the crude sterols by suction filtration, and repeat the above crystallization operation for 6 hours; evaporate and concentrate the filtrate under reduced pressure at 65°C for 45 minutes to obtain the deodorized distillate from which sterols have been removed. Material 182g.

[0042] 2. The deodorized distillate from which sterols have been removed is subjected to molecular distillation operation, the distillation temperature is 220°C, the operating pressure is 0.02torr, the feed temperature is 80°C, and the rotation speed is 150r / min to obtain the distillate and residual liquid; the components of the distillate It is fatty acid / vitamin E / glyceride concentrate, mainly containing fatty acid, vitamin E and glyceride. Obtained fatty acid / v...

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Abstract

The present invention discloses a method of extracting vitamin E from plant oil deodorized and distilled substance of plant oil. The present invention has the technical proposal that: through crystallization of previously separated crude sterol and molecular distillation of sterol ester, two types of lipase are orderly used respectively to realize the methyl esterification of free fatty and the esterification of triglyceride in deodorized and distilled substance. Then the molecular distillation technology is used to realize the separation of methyl ester and vitamin E in the fatty acid so as to prepare the concentrated vitamin E product. The present invention uses lipase to replace the conventional strong acid and alkali. Two types of lipase are used to replace the methyl esterification of free fatty and the esterification of triglyceride in deodorized and distilled substance. Compared with the prior art, the reaction of the present invention occur in a mild circumstance; the reactionprocess is easy to be controlled, and conducive to the recycling and use of vitamin E. Besides, the operation is relatively simple and has no problems of environmental pollution. The purity of concentrated vitamin E can reach above 30 percent.

Description

(1) Technical field [0001] The invention belongs to the technical field of agricultural product biochemistry, and relates to a method for extracting vitamin E from vegetable oil deodorization distillates. (2) Background technology [0002] Vegetable oil deodorizer distillates (deodorizer distillates) is a mixture of various fractions obtained in the deodorization process of vegetable oil. It mainly contains a large amount of free fatty acids, vitamin E, glycerides and other components. [0003] Natural vitamin E has many important physiological functions such as anti-free radicals, anti-aging, improving the physical immunity of the human body and animals, etc. It has no toxic and side effects on the human body, and its long-term use safety is much higher than that of synthetic vitamin E. Therefore, in the food and nutraceutical industry, natural vitamin E is widely favored. Based on the easy separation of vitamin E and fatty acid monoesters, the free fatty acids and neutra...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C07D311/72C12P17/06C12R1/72
Inventor 孙培龙邵平马新孟祥河
Owner ZHEJIANG UNIV OF TECH
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