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Hickory sterol extractive and preparation method and application thereof

A walnut sterol and extract technology, applied in the field of phytosterol extracts, can solve the problems of consuming flammable organic solvents, low product purity, and unsatisfactory products, and achieve excellent quality, simple process operation, and good quality effects

Active Publication Date: 2014-06-11
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But these processes are not ideal enough, or consume a large amount of flammable organic solvents, or the product purity is not high, or high temperature easily decomposes sterols

Method used

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  • Hickory sterol extractive and preparation method and application thereof
  • Hickory sterol extractive and preparation method and application thereof
  • Hickory sterol extractive and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0051] Embodiment 1, a kind of preparation method of pecan sterol extract:

[0052] After shelling the Linan hickory nuts, beat the hickory nut kernels into pulp, dry them in the sun, dry them with microwave until the moisture content is 5% (weight %), crush them into 5kg of 20-mesh hickory nut powder as raw material, and make them Put it into a supercritical extraction kettle, raise the temperature to 50°C, and start the plunger pump to pump CO 2 , into the extraction kettle through the preheater, when the pressure reaches 25MPa, start circulation; turn on the entrainer pump, so that 10% raw material weight ethanol passes through the preheater and enters the extraction kettle at the same time; during the circulation process, CO 2 And the extract is decompressed in the separator, and the extract is separated out in the separator, CO 2 For recycle use, the separation pressure of separation kettle 1 is set to 8MPa and the temperature is 40°C, the separation pressure of separati...

Embodiment 2

[0057] Embodiment 2, a kind of preparation method of pecan sterol extract:

[0058] The American hickory shells are preliminarily dried in the sun and then dried with hot air (70-90°C) until the moisture content is 5%, crushed into 5kg of 20-mesh hickory powder as raw material, and put it into a supercritical extraction kettle to heat up to 60°C, start the plunger pump to pump CO 2 , into the extraction kettle through the preheater, and when the pressure reaches 30MPa, the circulation starts; the entrainer pump is turned on, so that 10% acetone passes through the preheater and enters the extraction kettle at the same time; during the circulation process, CO 2 And the extract is decompressed in the separator, and the extract is separated out in the separator, CO 2 For recycling, set the separation pressure of separation kettle 1 to 8MPa and the temperature at 45°C, set the separation pressure of separation kettle 2 to 5MPa and the temperature to 30°C; after 2.5 hours of extrac...

Embodiment 3

[0060] Embodiment 3, a kind of preparation method of pecan sterol extract:

[0061] Grind the hickory kernels from Yunnan into pulp, press to remove water and preliminarily dry them in the sun, then dry them with microwaves until the water content is 5%, crush them into 6kg of 20-mesh hickory kernel powder, and put them into a supercritical extraction kettle , heat up to 45°C, start the plunger to pump CO 2 , into the extraction kettle through the preheater, when the pressure reaches 20MPa, the cycle starts; during the cycle, CO 2 And the extract is decompressed in the separator, and the extract is separated out in the separator, CO 2 For recycle use, the separation pressure of separation kettle 1 is set to 6MPa and the temperature is 35°C, the separation pressure of separation kettle 2 is set to 5MPa and the temperature is 30°C; after extraction for 1h, 60g of the extract is taken out from separation kettles 1 and 2 to obtain The rate is 1.0%, after drying at low temperatur...

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Abstract

The invention discloses a hickory sterol extractive. The hickory sterol extractive comprises 10 to 50% by weight of total sterol; the total sterol comprises 70 to 95% by weight of beta-sitosterol, fucosterol, campesterol and stigmasterol, wherein the weight ratio of the beta-sitosterol to the fucosterol to the campesterol to the stigmasterol is (70-95): (1-10): (2-12): (1-15). The invention also provides a preparation method of the hickory sterol extractive. The hickory sterol extractive is applicable to the preparation of medicines for reducing blood fat, daily cosmetics, or health care products.

Description

technical field [0001] The invention relates to the field of deep processing and comprehensive utilization of agricultural and sideline products. More specifically, it relates to a phytosterol extract extracted from hickory nut and its preparation method and application. Background technique [0002] Hickory (Carya), also known as "small walnut" and walnut catalpa, is an endangered plant under national third-level protection. Juglandaceae, Juglans, originated in the Tertiary and Cretaceous, is one of the older groups of angiosperms. Hickory nuts grow in a natural environment with superior climate, fertile soil and lush vegetation. It is a pure wild fruit and is a natural green food without any pollution pollution. There are many types of hickory, about 30 species, mainly produced in America. In my country, there are 5 species of hickory in Lin'an, Dabie Mountain, Hunan, Guizhou and Yunnan. In addition, American hickory is introduced and cultivated from America. Among the ...

Claims

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Application Information

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IPC IPC(8): A61K36/52A61K8/97A61K8/63A23L1/29A61P3/06A61P29/00A61P9/00A23L33/00
Inventor 陆柏益杨佳佳胡银洲毛淑琴周菲蒋易蓉洪雅雯
Owner ZHEJIANG UNIV
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