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Preparation method for crude Geraniin extract

A technology of geraniin and crude extract, which is applied to the preparation of sugar derivatives, chemical instruments and methods, sugar derivatives, etc., to achieve the effect of preventing degradation

Inactive Publication Date: 2018-01-12
KUNMING UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Geraniin has potential applications in medicine, food and cosmetics, but there is no research on the preparation of crude extracts of geraniin from Sapindaceae Shaozi plants in the current prior art

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] The preparation method of this geraniin crude extract, its specific steps are as follows:

[0021] (1) Firstly, the peel of the edible fruit of the Sapindaceae Shaozi plant is used as the raw material and then dried and crushed (the red rambutan peel is dried and crushed to pass through a 80-mesh sieve, the particle size is less than 178 μm), and the solid-to-liquid ratio is 1 : Add ethanol solution at 25g / mL (concentration of ethanol solution is 20%, v / v), and extract under ultrasonic extractor to obtain extract; where ultrasonic power is 100w, ultrasonic time is 8min, stirring speed is 1200r / min, stand still 5min, 1 repetition;

[0022] (2) Centrifuge and concentrate the extract obtained in step (1) to obtain a concentrated solution. After the concentrated solution is frozen at -20°C for 12 hours, it is vacuum-dried for 96 hours at the cold trap temperature of a freeze dryer at -40°C, and finally the old Crude stornienin extract.

[0023] The weight of the crude ger...

Embodiment 2

[0025] The preparation method of this geraniin crude extract, its specific steps are as follows:

[0026] (1) Firstly, the peel of the edible fruit of the Sapindaceae Shaozi plant is used as the raw material and then dried and crushed (the red rambutan peel is dried and crushed to pass through a 80-mesh sieve, the particle size is less than 178 μm), and the solid-to-liquid ratio is 1 : Add ethanol solution at 75g / mL (concentration of ethanol solution is 50%, v / v), extract under ultrasonic extractor to obtain extract; where ultrasonic power is 300w, ultrasonic time is 5min, stirring speed is 600r / min, stand still 3min, 3 repetitions;

[0027] (2) Centrifuge and concentrate the extract obtained in step (1) to obtain a concentrated solution. After the concentrated solution is frozen at -40°C for 8 hours, it is vacuum-dried for 60 hours at the cold trap temperature of a freeze dryer at -55°C, and finally the old Crude stornienin extract.

[0028] The weight of the crude geranidi...

Embodiment 3

[0030] The preparation method of this geraniin crude extract, its specific steps are as follows:

[0031] (1) Firstly, the peel of the edible fruit of the Sapindaceae Shaozi plant is used as the raw material and then dried and crushed (the red rambutan peel is dried and crushed to pass through a 80-mesh sieve, the particle size is less than 178 μm), and the solid-to-liquid ratio is 1 : Add ethanol solution at 100g / mL (concentration of ethanol solution is 80%, v / v), and extract under ultrasonic extractor to obtain extract; where ultrasonic power is 800w, ultrasonic time is 3min, stirring speed is 100r / min, stand still 1min, 5 repetitions;

[0032] (2) Centrifuge and concentrate the extract obtained in step (1) to obtain a concentrated solution. After the concentrated solution is frozen at -80°C for 4 hours, it is vacuum-dried for 48 hours at the cold trap temperature of a freeze dryer at -60°C, and finally the old Crude stornienin extract.

[0033] The weight of the crude ger...

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Abstract

The invention relates to a preparation method for a crude Geraniin extract, belonging to the technical field of high valuing of functional food and by-products. The preparation method comprises the following steps: with edible fruit peel of a Sapindaceae Nephelium plant as a raw material, carrying out drying and crushing, adding an ethanol solution according to a solid-liquid ratio of 1: (25-100)g / mL, and carrying out extraction in an ultrasonic extractor or under the combined action of mixing ultrasound or vortex so as to obtain an extract; and subjecting the obtained extract to centrifugation and concentration so as to obtain a concentrate, subjecting the concentrate to freezing treatment at minus 20 to minus 80 DEG C for 4 to 12 h, and carrying out vacuum drying at a cryo-temperature ofminus 40 to minus 80 DEG C in a freeze-drying machine for 48 to 96 h so as to finally obtain the crude Geraniin extract. The preparation method provided by the invention prepares the crude Geraniin extract through ultrasonic-assisted extraction and freeze-drying by using the edible fruit peel of the Sapindaceae Nephelium plant as the raw material and the ethanol solution as an extracting agent.

Description

technical field [0001] The invention relates to a preparation method of crude geraniin extract, which belongs to the technical field of high-value functional food and by-products. Background technique [0002] Geraniin (Geraniin) was originally discovered in the Geranium genus of the Geraniaceae in Japan. It is a yellow crystalline polyphenol compound, which belongs to the ellagitannins in the hydrolyzable tannins. It is decomposed into gallic acid, hexahydroxybiphenyl dicarboxylic acid, ellagic acid, corilagin, kelp acid and kelp. In recent years, it has been confirmed by studies that geraniin has significant biological activities such as anti-oxidation, anti-virus, anti-radiation, anti-tumor, and anti-osteoporosis, and has potential application value in pharmaceuticals, food nutrition, and cosmetics. [0003] It is believed that geraniin mainly exists in medicinal plants of Geraniumaceae and Euphorbiaceae, and the presence of geraniin is also detected in medicinal plants ...

Claims

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Application Information

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IPC IPC(8): C07H13/08C07H1/08
Inventor 孙丽平郭妍李笑马庆昱
Owner KUNMING UNIV OF SCI & TECH
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