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: 2008-04-02
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

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0032] Example one:

[0033] 1. Dissolve 200 g of rapeseed oil deodorized distillate in 600 ml of acetone-methanol mixed solvent (the volume ratio of acetone and methanol is 3:1), and the amount of the mixed solvent is 3 ml / g vegetable oil deodorized distillate. Starting from 50°C, slowly lower the temperature and crystallize to -5°C. The crystallization time is 18h. The crude sterols are separated by suction and filtration. Repeat the above crystallization operation again for 4h. The filtrate is evaporated and concentrated under reduced pressure at 65°C for 45min to obtain a deodorizing distillate that removes sterols.物173g.

[0034]2. The deodorized distillate from which sterols are removed is subjected to molecular distillation operation, the distillation temperature is 220°C, the operating pressure is 0.01 torr, the feed temperature is 80°C, and the rotating speed is 150r / min to obtain distillate and residual liquid; distillate components It is a fatty acid / vitamin E / glyceride...

Example Embodiment

[0037] Embodiment two:

[0038] 1. Dissolve 200 g of rapeseed oil deodorized distillate in 800 ml of acetone-methanol mixed solvent (the volume ratio of acetone and methanol is 5:1), and the amount of the mixed solvent is 4 ml / g vegetable oil deodorized distillate. Starting from 60°C, slowly lower the temperature and crystallize to -5°C. The crystallization time is 24h. The crude sterols are separated by suction and filtration. Repeat the above crystallization operation again for 8h; the filtrate is concentrated by evaporation under reduced pressure at 65°C for 45min to obtain a deodorizing distillate for removing sterols.物180g.

[0039] 2. The deodorized distillate from which sterols have been removed is subjected to molecular distillation operation at a distillation temperature of 230°C, an operating pressure of 0.03torr, a feed temperature of 90°C, and a rotating speed of 180r / min to obtain distillate and residual liquid; distillate components It is a fatty acid / vitamin E / glyce...

Example Embodiment

[0042] Embodiment three:

[0043] 1. Take 200 g of soybean oil deodorized distillate and dissolve it in 700 ml of acetone-methanol mixed solvent (the volume ratio of acetone and methanol is 4:1). Starting from 60°C, slowly lower the temperature and crystallize to -5°C. The crystallization time is 20h. The crude sterols are separated by suction and filtration. Repeat the above crystallization operation again for 6h; the filtrate is concentrated by evaporation under reduced pressure at 65°C for 45min to obtain a deodorizing distillate for removing sterol物182g.

[0044] 2. The deodorized distillate from which sterols are 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 rotating speed is 150r / min to obtain the distillate and residual liquid; distillate components It is a fatty acid / vitamin E / glyceride concentrate, mainly containing fatty acids, vitamin E and glycer...

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PUM

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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 a following technical proposal: 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 reaction process 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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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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