Long Yan Rou - Chinese HerbsArillus Longan, Longan Aril
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| Dosage |
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Oral administration: 10 to 15g for decoction, up to 30 to 60g for large doses. The herb can also be made as extracts, infusion with alcohol, or made into pills and powder.
5:1 concentrated extract: 2 to 3g for decoction.
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| Toxicity |
Mice were given a compound extract of Long Yan Rou (1g/ml) and Ge Jie (0.5g/ml), at 25ml/kg. Six hours later, the extract was given again. After 7 days of observation, no adverse reactions or deaths were found.( 1) |
| Chemical Composition |
Vitamin A, B1, B2, C, P (vitamin P is related to lemon);
Glucose;
Sucrose;
Tartaric acid;
Adenine;
Lysophosphatidyl choline;
Phosphatidyl choline;
Phosphatidylinositol;
Phosphatidylserine;
Phosphatidyl-ethanolamine;
Phosphatidic acid;
Phosphatidyl glycerol;
2-amino-4-methylhex-5-ynoic acid;
2-amino-4-hydroxymethylhex-5-ynoic acid;
2-amino-4-hydroxyhept-6-ynoic acid;
Dihydrosterculic acid;
Quercetin;
Quercitrin;
Tannic acid;
Friedlin;
Epifriedelanol;
b-sitosterol;
Stigmasterol;
Stigmasteryl-b-D-glucoside;
Stigmasterol;
Fucosterol.( 2),( 3),( 4)
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| Precautions |
Long Yan Rou should be used with caution in patients with phlegm-fire and retention of dampness in the chest. Decoctions with large quantities of Long Yan Rou can induce reactions such as dizziness.( 5) |
| Pharmacology |
A Long Yan Rou water extract can inhibit human cervical carcinoma cells, JTC-26, by more than 90% inhibition rate.( 6) A Long Yan Rou water decoction (1:2) has inhibitory effects on sporular trichophytii and Bacillus dysenteriae.( 7) Long Yan Rou leaf has antibacterial effects on B. subtillis.( 8) A combination of Long Yan Rou (1g/ml) and Ge Jie (0.5g/ml) extracts, when administered via the stomach at 20ml/kg/dx10, had significant protective effects on mice suffering from irritation due to low temperature, high temperature, and hypoxia. It can also increase mouse body weight. When given by stomach at 15ml/kg/dx14, the combination can significantly antagonize a body weight decrease in mice. Administration through the stomach at 15ml/kg/dx10 can increase carbon removal in mice that were previously subject to intravenous injections of carbon granules. At 20ml/kg/dx7, it can increase mouse spleen weight.( 9) Long Yan Rou can inhibit xanthoprotein MAO-B activity, which enhances human senescence. Its extract can selectively inhibit brain MAO-B activity, according to a model of MAO-B activity in isolated mouse brain and liver.( 10) |
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References
This information is educational in context and is not to be used to diagnose, treat or cure any disease. Please consult your licensed health care practitioner before using this or any medical information.
©2000-2008 ADCCG, Inc. All Rights Reserved.