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Method for separating and extracting phytosterin and Vitamin E from soyabean deodorization distillate

A technology for deodorizing distillate and phytosterol, applied in the field of separation and extraction of phytosterol and vitamin E, can solve the problems of sterol decomposition, large flammable organic solvent, low product purity, etc., and achieve the effect of improving utilization rate

Inactive Publication Date: 2007-11-21
HEBEI UNIVERSITY OF SCIENCE AND TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The above-mentioned various processes have the defects of consuming a large amount of flammable organic solvents, low product purity, and easy decomposition of sterols under high temperature conditions

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] Put the soybean deodorized distillate into a supercritical extraction tank, set the extraction temperature to 45°C, the separation temperature to 55°C, the extraction pressure to 25MPa, the separation pressure to 6MPa, CO 2The flow rate is 20kg / h, and the time is 4 hours. The sterol content in the raffinate is 81.35%, that is, the crude sterol. Put the crude sterol in a reflux bottle, mix acetone and crude sterol (V / V) at a ratio of 5:1, reflux at the boiling point (54°C) to dissolve, then slowly lower the temperature to crystallize, wash the sterol crystal with equal weight of cold acetone, and dry it in vacuum at low temperature , to obtain phytosterol products with a purity of 93.7% and a yield of 85.6%.

[0034] The extract was mixed with methanol (V / V) at a ratio of 1:0.8, using D001 strongly acidic cation exchange resin as a catalyst, the catalyst dosage was 20%, the catalytic temperature was 55°C, the reaction time was 4 hours, and the fatty acid methyl ester rat...

Embodiment 2

[0038] Put the soybean deodorized distillate into a supercritical extraction tank, set the extraction temperature to 60°C, the separation temperature to 55°C, the extraction pressure to 10MPa, the separation pressure to 6MPa, CO 2 The flow rate is 24kg / h, the time is 2 hours, and the sterol content in the raffinate is 85%, that is, crude sterol. Put the crude sterol in a reflux bottle, mix acetone and crude sterol (V / V) at a ratio of 5:1, reflux at the boiling point (54°C) to dissolve, then slowly lower the temperature to crystallize, wash the sterol crystal with equal weight of cold acetone, and dry it in vacuum at low temperature , to obtain phytosterol products with a purity of 95% and a yield of 90%.

[0039] The extract was mixed with methanol (V / V) in a ratio of 1:0.8, using D001 strongly acidic cation exchange resin as a catalyst, the catalyst dosage was 22%, the catalytic temperature was 70°C, the reaction time was 1 hour, and the fatty acid methyl ester rate was 98.5%...

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Abstract

A method for separating and extracting vegetable sterol and Vitamin E from soybean deodorization distillate is carried out by extracting for soybean deodorization distillate by supercritical fluid, refluxing while dissolving for extract at acetone boiling-point temperature, lowering temperature to room temperature, crystallizing, keeping temperature, abstraction filtering to obtain sterol crystal, methyl esterifying, alcoholyzing, decompress distilling, and collecting fraction at 190-210 degree to obtain fraction Vitamin E. Main component of the extract is sterol with Vitamin E. It's cheap, simple, and efficient and has more yield.

Description

technical field [0001] The invention relates to a method for separating and extracting phytosterols and vitamin E, in particular to a method for separating and extracting phytosterols and vitamin E from a by-product of producing refined soybean oil and soybean deodorized distillate by supercritical extraction technology. Background technique [0002] The main components of soybean deodorized distillate include 10-20% glycerides, 30-60% fatty acids, 3-10% vitamin E, 5-15% sterols and their esters, 5-10% hydrocarbons , a small amount of odorous compounds and oxidation by-products. At present, most enterprises use molecular distillation to produce phytosterols and vitamin E. Although molecular distillation has high vacuum, low operating temperature and short heating time, it has incomparable advantages over conventional methods for the separation of high boiling point, heat-sensitive and easily oxidized materials, and can perfectly guarantee the natural quality of vitamin E. ...

Claims

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Application Information

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IPC IPC(8): C07J9/00C07D311/72A61K36/48
CPCY02P20/54
Inventor 牟德华李艳
Owner HEBEI UNIVERSITY OF SCIENCE AND TECHNOLOGY
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