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Preparation process and application of ethanol extracts of Parasenecio firmus Kom. leaves

A technology of ethanol extraction and preparation process, which is applied in the field of research and development of pharmaceutical products

Inactive Publication Date: 2012-07-18
SHANDONG UNIV AT WEIHAI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Through literature search, it is found that there are few reports on the relevant research on Crabgrass at home and abroad

Method used

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  • Preparation process and application of ethanol extracts of Parasenecio firmus Kom. leaves

Examples

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Effect test

Embodiment 1

[0012] 1. The preparation process of the ethanol extract of the leaves of Crabbetia chinensis is characterized in that it comprises the following steps:

[0013] Step (1): Weigh 100 g of dry Crabgrass leaf meal powder, extract with 70% ethanol for 6 hours in an amount 6 times the weight of the meal powder, and filter to obtain filtrate and filter residue;

[0014] Step (2): leaching the filter residue in (1) with 4 times the weight of coarse powder with 70% ethanol for 4 hours, and filtering to obtain the filtrate and filter residue;

[0015] Step (3): leaching the filter residue in (2) with 70% ethanol in an amount 3 times the weight of coarse powder for 3h-4h, and filtering to obtain filtrate and filter residue;

[0016] Step (4): The filtrates obtained in steps (1), (2) and (3) were combined, concentrated under reduced pressure to 100ml, and stored in a refrigerator at 4°C for future use.

[0017] 2. The use of the ethanol extract of Echinococcus chinensis leaves, which is...

Embodiment 2

[0019] 1. The preparation process of the ethanol extract of the leaves of Crabbetia chinensis is characterized in that it comprises the following steps:

[0020] Step (1): Weigh 100 g of dry Crabbeta leaf coarse powder, extract with 70% ethanol for 8 hours in an amount 8 times the weight of the coarse powder, and filter to obtain filtrate and filter residue;

[0021] Step (2): extract the filter residue in (1) with 70% ethanol with 6 times the weight of the coarse powder for 6 hours, and filter to obtain the filtrate and filter residue;

[0022] Step (3): leaching the filter residue in (2) with 3-4 times the amount of coarse powder with 70% ethanol for 4 hours, and filtering to obtain the filtrate and filter residue;

[0023] Step (4): The filtrates obtained in steps (1), (2) and (3) were combined, concentrated under reduced pressure to 100ml, and stored in a refrigerator at 4°C for future use.

[0024] 2. The use of the ethanol extract of Echinococcus chinensis leaves, which...

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Abstract

The invention belongs to the technical field of research and development of medical products. The invention relates to a preparation process and application of ethanol extracts of Parasenecio firmus Kom. leaves. The preparation process comprises the following steps of: weighing dry coarse powder of Parasenecio firmus Kom. leaves, extracting the coarse powder with 70% of ethanol and filtering the extracts to obtain filtrate and filter residues; repeatedly extracting the filter residues with 70% of ethanol twice; and mxing the obtained filtrate, concentrating the merged filtrate under reduced pressure and storing the concentrate in a refrigerator at 4 DEG C for later use. The products are used for preparing the pharmaceutical preparations for inhibiting escherichia coli, streptococcus, salmonella, pasteurella and staphylococcus aureus.

Description

technical field [0001] The invention belongs to the technical field of research and development of pharmaceutical products. The invention relates to the preparation process and application of the ethanol extract of the leaves of Crabbetia chinensis. Background technique [0002] Parasenecio firmus Kom (Parasenecio firmus Kom. The synonym is cacalia firma kom.), a plant of the genus Parasenecio or cacalia in the Compositae family (compositae), also known as Parasenecio firmus Kom, which is eaten as a wild vegetable in the folk. Mainly distributed in Jilin (Fusong, Changbai Mountains, Hunjiang River), growing under dense forests or forest margins and open spaces in forests, 800-1100 meters above sea level. North Korea is also distributed. After literature search, it was found that there are few reports on the related research on Crabbeta spp. at home and abroad. Contents of the invention [0003] 1. The preparation process of the ethanol extract of the leaves of Crabbetia...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61K36/28A61P31/04
CPCY02A50/30
Inventor 张崇禧张成城侯欣池朱启光郑友兰
Owner SHANDONG UNIV AT WEIHAI
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