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A kind of extraction method of chlorogenic acid in Eucommia leaves

An extraction method and Eucommia leaf technology are applied in the field of preparation of chlorogenic acid, which can solve the problems of aggravating the loss of chlorogenic acid, loss of chlorogenic acid, waste of energy, etc., and achieve energy saving, yield improvement, and improvement of finished product transfer. rate effect

Active Publication Date: 2021-02-26
BAODING JIZHONG PHARMA
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Problems solved by technology

However, the chlorogenic acid loss of Eucommia dry leaves is serious during drying or long-term drying process and storage process, and steps such as high temperature treatment are required in the extraction and processing process of Eucommia dry leaves, which not only increases the loss of chlorogenic acid, but also, It also seriously consumes heat energy and wastes energy

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  • A kind of extraction method of chlorogenic acid in Eucommia leaves

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Embodiment 1

[0024] A method for extracting chlorogenic acid in Eucommia leaves, comprising the following steps:

[0025] Step 1, after pulverizing the fresh leaves of eucommia ulmoides with a water content of 60%-70% into a slurry, passing through a 100-mesh sieve to obtain eucommia leaf slurry;

[0026] Step 2: According to the mass ratio of eucommia ulmoides fresh leaves to ethanol solution 1:2, add edible ethanol solution with a volume concentration of 95% to the eucommia ulmoides leaf slurry prepared in step 1; Squeeze under pressure for 30 seconds until the content of the remaining volatile matter in the residue (the remaining volatile matter is alcohol-water mixture) is 10%-15%, and collect the squeezed liquid;

[0027] Step 3. After standing and settling the squeezed liquid prepared in Step 2, filter it with a 200-mesh filter cloth to obtain a clear liquid, and then recover ethanol under reduced pressure at 55°C until it has no alcohol smell to obtain an extract;

[0028] Step 4. ...

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Abstract

The invention relates to a method for extracting chlorogenic acid in Eucommia leaves, which comprises the following steps: step 1, crushing fresh leaves of Eucommia ulmoides into pulp and then sieving to obtain eucommia leaf slurry; Add an ethanol solution with a volume concentration of 95%; soak for 1 to 4 hours, squeeze through a plate and frame press, and collect the squeezed liquid; step 3, after the squeezed liquid obtained in step 2 is left to settle, filter to obtain clarification liquid, then recover ethanol under reduced pressure at 50-60°C until there is no alcohol smell, and obtain the extract; step 4, add activated carbon to the extract prepared in step 3, boil, filter, and obtain the filtrate; step 5, step 4 The obtained filtrate is spray-dried and powdered by cyclone to obtain chlorogenic acid powder. By adopting the method of the invention, the conversion rate of chlorogenic acid is improved, energy consumption is reduced, and cost is saved.

Description

technical field [0001] The invention belongs to the field of preparation of chlorogenic acid, in particular to a method for extracting chlorogenic acid from Eucommia leaves. Background technique [0002] Chlorogenic acid is known as the soft gold of the plant kingdom, and has a wide range of physiological activities such as anti-oxidation. Eucommia leaves have the highest content of chlorogenic acid at present, and have the same pharmacological effects as Eucommia bark. The content index of chlorogenic acid in Eucommia ulmoides leaf medicinal material included in Chinese Pharmacopoeia is not less than 0.08%. Among them, the content of chlorogenic acid in the fresh leaves of Eucommia ulmoides is the highest, which can reach 1%-3%. However, the chlorogenic acid loss of Eucommia dry leaves is serious during drying or long-term drying process and storage process, and steps such as high temperature treatment are required in the extraction and processing process of Eucommia dry ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C07C67/48C07C67/56C07C67/58C07C69/732
CPCC07C67/48C07C67/56C07C67/58C07C69/732
Inventor 田继业张云刘国辉高秀国李滢
Owner BAODING JIZHONG PHARMA
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