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Method for preparing high-content beta-sitosterin products by catalytic hydrogenation

A technology for sitosterol and products, which is applied in the field of catalytic hydrogenation to prepare beta-sitosterol products, can solve problems such as low yield, difficult industrial application, etc., and achieves the effects of easy operation, clean, sanitation and environmental protection requirements and low production cost.

Inactive Publication Date: 2006-05-03
SHANGHAI JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the relatively low yield, it is generally suitable as a preparation and separation method for β-sitosterol standard products, but it is difficult for industrial application

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0013] Embodiments are provided in conjunction with the steps of the method:

[0014] 1. The mixed phytosterol raw material that adopts is: the mass purity of total sterol is 92.6%, is a kind of phytosterol from soybean oil deodorization distillate. The ratio of each main monomer in the sterol is: brassicasterol 5.68%, stigmasterol 28.29%, campesterol 21.23%, β-sitosterol 41.75% (mass percentage).

[0015] 2. Take 1 g of the above-mentioned mixed phytosterols, place them in a 150 ml glass hydrogenation conical flask, add 50 ml of analytically pure n-butanol reagent, and fully dissolve the phytosterols in the solvent.

[0016] 3. Add 4% (mass percentage) of Raney-Ni (nickel) as a catalyst for the hydrogenation reaction, and install a hydrogenation device and a magnetic stirring device. The reaction conditions are normal temperature and pressure, the reaction time is 6 hours, and the reaction process uses magnetic stirring at a speed of 90 rpm. It is advisable that the catalys...

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PUM

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Abstract

A method for preparing β-sitosterol products by catalytic hydrogenation. Used in food, cosmetics, steroid drug industry and other fields. In the present invention, the mixed phytosterol raw material is dissolved in an organic solvent, and a hydrogenation catalyst is used to carry out catalytic hydrogenation under normal temperature and normal pressure or pressurized conditions, and the stigmasterol in the mixed phytosterol is hydrogenated to generate β-sitosterol, and finally A liquid β-sitosterol product is obtained, and the mass percentage range of the β-sitosterol content is 60%-75%. The β-sitosterol prepared by the catalytic hydrogenation method adopted in the present invention can maintain a high sterol yield while obtaining 70% concentration of β-sitosterol, and the loss of sterol is generally below 10%. Simultaneously, the method is easy and safe to operate; the equipment requirements are simple and the production cost is low; and the cleanliness and sanitation meet the requirements of environmental protection.

Description

technical field [0001] The invention relates to a method for preparing a phytosterol product, in particular to a method for preparing a β-sitosterol product by catalytic hydrogenation. For food, medicine and chemical industry. Background of the invention: [0002] Phytosterols are a large class of tetracyclic triterpenoid natural products that widely exist in nature. Because of their ability to reduce cholesterol levels in human serum, phytosterols have become a research hotspot in today's blood lipid-lowering functional foods. There are many kinds of phytosterols in nature, but in the development of phytosterol products from common sources, four phytosterols are mainly involved, which are: brassicasterol, campesterol, stigmasterol and β-sitosterol. [0003] There are mainly two methods for the research on increasing the mass percentage content of β-sitosterol in mixed phytosterol products. The first is the solvent recrystallization method (Xu Wenlin, Huang Yibo, Qian Junh...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C07J9/00
Inventor 盛漪谷文英王建新
Owner SHANGHAI JIAOTONG UNIV