Oleanolic acid and method for preparing oleanolic acid by utilizing red dates
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A technology of oleanolic acid and red dates, applied in the directions of steroids, organic chemistry, etc., can solve the problems of high extraction cost and complicated process, and achieve the effects of improving the extraction rate, simplifying the process, and making the production process simple and efficient.
Inactive Publication Date: 2014-03-26
申琳 +1
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Problems solved by technology
Therefore, the existing method for extracting oleanolic acid from plants is complicated and the extraction cost is high
Method used
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Embodiment 1
[0019] The method embodiment 1 of utilizing jujube to produce oleanolic acid provided by the present invention may comprise the following steps:
[0020] Step 101, cleaning the defective dried red dates, and drying the surface moisture. Wherein, the bad dried jujube in the present invention refers to the bad jujube after air-drying, and the moisture content thereof is generally less than 25%.
[0021] my country's geography, soil and climate affected by the subtropical monsoon in most areas are very suitable for the growth of jujube trees, so the distribution of jujube production areas in my country is extremely wide. However, due to the multi-seed characteristics of jujube fruit and factors that are difficult to control such as management, gathering, drying, and climate, the defective fruit rate of generally dried jujube is about 20%. If there is continuous rain during the harvest season, the rate of defective fruit will increase exponentially, and in some years the rate of ...
Embodiment 2
[0036] The steps of Embodiment 2 are the same as those of Embodiment 1 above, the difference is that in Embodiment 2:
[0037] The solvent in step 104 is 95% ethanol, and the quality of adding solvent is 10 times of the product quality that step 103 obtains;
[0038] In step 105, the microwave power is 70W; the microwave heating time is 150 seconds.
Embodiment 3
[0040] The steps of the third embodiment are the same as those of the above-mentioned first embodiment, the difference is that in the third embodiment:
[0041] The solvent in step 104 is 90% ethanol, and the quality of adding solvent is 14 times of the product quality that step 103 obtains;
[0042] In step 105, the microwave power is 210W; the microwave heating time is 120 seconds.
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Abstract
The invention provides oleanolic acid and a method for preparing the oleanolic acid by utilizing Chinese red dates. The method comprises the following steps: denucleating the Chinese red dates, and smashing, thus raw material particles are obtained, wherein the Chinese red dates are imperfect and dry; adding a solvent into the raw material particles to obtain a solution A, wherein the solvent is 80-95% ethyl alcohol, and the mass ratio of the solvent to the raw material particles is (10-18):1; carrying out microwave heating and leaching on the solution A, wherein the microwave power is 70-350W, and the microwave heating time is 90-150 seconds; filtering products after the microwave heating and leaching are carried out, thus a solution B is obtained; concentrating the solution B, removing the solvent, and adding distilled water, thus a solution C is obtained; adding a flocculating agent into the solution C, thus a sediment D is produced; and dissolving the sediment D with absolute ethyl alcohol, filtering, removing undissolved substances, concentrating, and removing the absolute ethyl alcohol, thus the oleanolic acid is obtained. In the invention, a microwave-assisted extraction method is adopted, and the process can be simplified; and, imperfect dry Chinese red dates are taken as raw materials, the raw materials are available, and the cost is low.
Description
technical field [0001] The invention relates to food processing technology, in particular to a method for preparing oleanolic acid from red dates and the oleanolic acid. Background technique [0002] Jujube is the fruit of the deciduous tree Jujube in the family Rhamnaceae. Jujube is sweet and delicious, rich in nutrition, and is deeply loved by people. [0003] Red dates are rich in oleanolic acid. Oleanolic acid has the function of protecting the liver and lowering enzymes. Oleanolic acid can restore the denatured and necrotic liver tissue to reduce the decline of alanine (ALT) activity, weaken the inflammatory response of liver tissue, and reduce the gamma globulin in the blood. Promote the regeneration of liver cells, quickly repair the necrotic area, thereby inhibiting the proliferation of collagen fibers and making it difficult to form cirrhosis. Oleanolic acid can affect the immune system and allergies, and it can remove the inhibitory effect of tumor patient TS ce...
Claims
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Application Information
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