Preparation method of ilicin A and total triterpenoids contained in Hainan holly leaf and application of ilicin A and total triterpenoids
A technology of mountain green tea and total triterpenes, which is applied to the method for extracting and enriching monomers of total triterpenes and ilextin A of mountain green tea and the field of cardiovascular activity thereof, can solve the problems such as no single component medicine, achieves low cost, Easy to operate, reproducible and stable results
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[0025] Example 1
[0026] a. Take 5kg of raw camellia, add 25L of 70% methanol solution and soak overnight, heat and reflux for extraction once, 1.5h each time;
[0027] b. Combine the extracts, concentrate to obtain a thick extract, centrifuge at 4000r / min for 10min, and separate the supernatant and the precipitated part;
[0028] c. Suspend the precipitated part with 30%-40% ethanol, and then extract with petroleum ether (5:1, v / v) for 3 times to decolorize. The lower layer solution is concentrated under reduced pressure to obtain the extract, which is naturally dried, crushed, and passed. A 60-mesh sieve yielded 537g of total triterpenoids in green tea with a content of 50.8%.
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[0029] Example 2
[0030] a. Take 5kg of raw camellia, add 35L of 75% ethanol solution to soak overnight, heat and reflux for extraction once, 3h each time;
[0031] b. Combine the extracts, concentrate to obtain a thick extract, centrifuge at 4000r / min for 10min, and separate the supernatant and the precipitated part;
[0032] c. Suspend the precipitated part with 30%-40% ethanol, and then extract twice with petroleum ether (3:1, v / v) to decolorize. The lower layer solution is concentrated under reduced pressure to obtain the extract, which is naturally dried, crushed, and passed. A 60-mesh sieve yielded 546 g of total triterpenoids in green tea with a content of 53.6%.
Example Embodiment
[0033] Example 3
[0034] a. Take 5kg of raw camellia, add 50L of 85% ethanol solution to soak overnight, heat and reflux for extraction 2 times, 2.5h each time;
[0035] b. Combine the extracts, concentrate to obtain a thick extract, centrifuge at 4000r / min for 10min, and separate the supernatant and the precipitated part;
[0036] c. Suspend the precipitated part with 30%-40% ethanol, and then extract 3 times with dichloromethane (6:1, v / v) to decolorize. The lower layer solution is concentrated under reduced pressure to obtain the extract, which is naturally dried and crushed. After passing through a 60-mesh sieve, 562 g of total triterpenoids of mountain green tea were obtained, with a content of 54.7%.
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