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Method for extracting phytosterol from waste residues generated in biodiesel production and product thereof

A phytosterol and biodiesel technology, applied in the field of comprehensive utilization of resources, can solve the problems of many steps, unfavorable industrialization development, and high equipment requirements

Inactive Publication Date: 2011-01-12
领先生物农业股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There are many steps in the whole process, and the requirements for equipment are relatively high, and the use of enzymes as catalysts makes the cost of the whole process relatively high, which is not conducive to the industrialization of this technology.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0070] Example 1 : adopt the inventive method to extract phytosterol

[0071] The extraction steps are as follows:

[0072] (1) saponification of the waste residue

[0073] 10g of residual residue at the bottom of the distillation tank and 1mol / L of KOH ethanol solution (water: ethanol=1: 4) after distilling fatty acid in the biodiesel production process, according to the ratio of the residue mass gram to the volume milliliter of the alkaline ethanol solution Mix at a ratio of 1:8, and then saponify under reflux at a temperature of 80° C. for 1 h.

[0074] (2) Extraction of phytosterols

[0075] Add 60ml of cold water to the saponified product obtained in step (1) and stir and mix it. After it is down to room temperature, add the extraction solvent n-hexane according to the ratio of extraction solvent volume milliliters to the waste residue mass gram ratio of 10:1. Repeat the extraction 3 times, combine the extracted organic phases, wash repeatedly with water, and check th...

Embodiment 2

[0078] Example 2 : adopt the inventive method to extract phytosterol

[0079] The extraction steps are as follows:

[0080] (1) saponification of the waste residue

[0081] 10g of residual residue at the bottom of the distillation tank and 1mol / L of KOH ethanol solution (water: ethanol=1: 4) after distilling fatty acid in the biodiesel production process, according to the ratio of the residue mass gram to the volume milliliter of the alkaline ethanol solution Mix at a ratio of 1:5, and then saponify under reflux at a temperature of 80° C. for 1 h.

[0082] (2) Extraction of phytosterols

[0083] Add 60ml of cold water to the saponified product obtained in step (1) and stir and mix it. After it is down to room temperature, add the extraction solvent n-hexane according to the ratio of extraction solvent volume milliliters to the waste residue mass gram ratio of 30:1. Repeat the extraction 3 times, combine the extracted organic phases, wash repeatedly with water, and check t...

Embodiment 3

[0086] Example 3 : adopt the inventive method to extract phytosterol

[0087] The extraction steps are as follows:

[0088] (1) saponification of the waste residue

[0089] 10g distills fatty acid methyl ester / ethyl ester in biodiesel refining process Remaining distillation still bottom waste residue and 1mol / L NaOH ethanol aqueous solution (water: ethanol=1: 4) according to described waste residue mass gram and described alkaline ethanol The ratio of the volume of the aqueous solution in milliliters is 1:10 for mixing, and then heating and reflux saponification at a temperature of 75° C. for 6 hours.

[0090] (2) Extraction of phytosterols

[0091]Add 60ml of cold water to the saponified product obtained in step (1) and stir and mix it. After it is down to room temperature, add extraction solvent ethyl acetate according to the ratio of extraction solvent volume milliliters and described waste residue mass grams to 40: 1, at room temperature Repeat the extraction 4 times ...

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PUM

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Abstract

The invention discloses a method for extracting phytosterol from waste residues generated in biodiesel production, comprising the following steps of: converting phytosterol in a combined state into free phytosterol through deep saponification; extracting the phytosterol through an organic solvent to prepare mother liquor of crude sterine; recovering the solvent to obtain a crude sterine product, wherein the extraction rate of the crude sterine can reach 88.6 percent; recrystallizing the crude sterine product through absolute ethyl alcohol to obtain high-purity phytosterol, wherein the purity of the obtained phytosterol can reach 91.3 percent, and the prepared phytosterol contains campesterol, stigmasterol and sitosterol. The invention has simple extraction and purification method, changes the produced waste residues of biodiesel into valuables and has a good industrial application prospect.

Description

【Technical field】 [0001] The invention belongs to the technical field of resource comprehensive utilization. More specifically, the present invention relates to a method for extracting phytosterols from the waste residue obtained from producing biodiesel, and also relates to the phytosterols obtained by the method. 【Background technique】 [0002] Phytosterol is a compound composed of a steroid nucleus and alcohols, with a hydroxyl group at the 3-position and 27-29 carbon atoms. Some research results show that phytosterols and their fatty acid esters can inhibit the absorption of cholesterol in the small intestine, thereby effectively reducing the concentration of low-density lipoprotein in plasma and preventing atherosclerosis and coronary heart disease. In view of the beneficial physiological effects of phytosterols, in September 2000, the US Food and Drug Administration (FDA) approved the use of phytosterols as food supplements. Now it has been widely used in edible oil,...

Claims

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Application Information

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IPC IPC(8): C07J75/00C07J9/00
Inventor 黄雪红孟永宏徐志文
Owner 领先生物农业股份有限公司
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