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Preparation method of inula salsoloides extract and application of inula salsoloides extract as grape preservative

A technology of Polygonum japonica and extract, applied in the field of preparation of Polygonum japonica extract, can solve the problems of long time consumption, low yield, limited raw materials, etc., and achieve the effects of long time consumption, low yield and short time consumption

Active Publication Date: 2015-07-22
NINGXIA UNIVERSITY
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Low yield, long time-consuming, and very limited raw materials for one extraction

Method used

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  • Preparation method of inula salsoloides extract and application of inula salsoloides extract as grape preservative

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Embodiment 1

[0013] 1) Select the aboveground part of Inula salsoloides (collected from Zhongning County, Ningxia) in the flowering stage as raw material, dry it in the shade naturally, crush it through a 40-mesh sieve with a pulverizer, and obtain a powder for later use;

[0014] 2) Accurately weigh 210g of Polygonum officinalis powder and put it into a 1L extraction kettle, and use CO 2 The fluid is the extraction solvent, the extraction pressure is controlled at 25Mpa, the extraction temperature is 35°C, and the extraction is performed for 1.0h;

[0015] 3) In a supercritical state, the CO 2 The fluid enters the separation tank. Under the conditions of separation pressure of 9Mpa and separation temperature of 45°C, supercritical CO 2 The fluid turns into an ordinary (normal temperature and pressure) gas, and the extracted Polygonum officinale extract is completely separated to obtain a yellow-green semi-fluid, which is sealed and stored in a refrigerator at 4°C;

[0016] The tradition...

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Abstract

The invention relates to a preparation method of inula salsoloides extract. The preparation method is characterized by comprising the following steps: 1), selecting overground parts of inula salsoloides in flowering period, naturally drying the selected inula salsoloides in shade, crushing and screening the inula salsoloides through a 40-mesh sieve to obtain inula salsoloides powder; 2), filling inula salsoloides powder into an extraction kettle, using CO2 fluid as an extraction solvent, performing extraction for 0.5-3 hours under the conditions that the extraction pressure is 20-35 Mpa and the extraction temperature is 30-75 DEG C; 3), in a supercritical state, filling CO2 fluid carrying inula salsoloides oil into a separation kettle, converting supercritical CO2 fluid into ordinary gas under the conditions that the separation pressure is 5-11 Mpa and the separation temperature is 30-50 DEG C, so that the extracted inula salsoloides oil is separated to obtain yellow-green semiliquid. According to the preparation method, supercritical CO2 fluid is used for extracting the inula salsoloides extract having resistance to postharvest pathogens of fruits and vegetables, so that the targeting property is strong, and safe, non-toxic and environment-friendly fruits and vegetables can be obtained.

Description

technical field [0001] The invention relates to a preparation method of Polygonum chinensis extract. Background technique [0002] In the current methods for obtaining essential oils from Polygonum officinalis, the related technology mainly uses traditional solvent extraction method to obtain Polygonum officinalis extract. For example, the publication number is CN101747153A, the extract of Polygonum officinalis and its extraction method and use: it mainly uses ethanol permeation extraction to obtain the extract, and after concentration, it is extracted with petroleum ether and ethyl acetate in turn, and after the extract is concentrated, it is carried out on a silica gel column. After chromatographic elution, the Polygonum officinalis extract was obtained. Another example is the document: GC-MS analysis of the chemical components of the essential oil of Polygonum officinalis: the volatile oil of the whole plant of Polygonum officinalis is mainly obtained by traditional stea...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C11B9/02A23B7/154
CPCA23B7/154C11B9/025
Inventor 牛东玲田晓燕李艳
Owner NINGXIA UNIVERSITY
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