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long yan  龍眼

long yan rou 龍眼肉

 

Translated and Edited by: Joe Hing kwok Chu

Pharmaceutical name:

英文藥名﹕

Arillus Euphoriae Longanae

Botanical name:

學名﹕

Dimocarpus longans Lour.

Euphoria longans (Lour.) Steud.

Pometia pinnata Forst. (long yan of Eastern Taiwan 臺東龍眼 )

Pron. in Japanese:

日語發音﹕

ryuganniku (long yan rou 龍眼肉)

Pron. in Korean:

韓語發音﹕

yonganyuk (long yan rou 龍眼肉)

Pron. in Cantonese:

粵音﹕

lung4 ngaan5 yuk6

Other Names:

別名﹕

gui yuan 桂圓,yuan yan 圓眼 yi zhi 益智,mi pi 蜜脾,long yan gan

tava (Fijian, Taongan, Samoan name), acai (native name)

Common Name:

英文名﹕

longan

Distribution:

產地﹕

Guangdong, Guangxi, Fujian, Taiwan, Sichuan provinces of China, and also Philippines, Pacific Islands, Southeast Asia.

Properties

(characteristics)﹕

性味﹕

  1. 1. root: slightly bitter, neutral.

  2. 2. leaves: slightly bitter, neutral.

  3. 3. meat (long yan rou): .

  4. 4. seeds: slightly bitter, tart, neutral.

 

1. 根:微苦,平。

2. 葉:微苦,平。

3. 假種皮(龍 眼 肉 ): 甘,平。

4. 種子:微苦,澀,平。

Channels (meridians) entered:

 

歸經﹕

Long yan rou: heart and spleen

龍 眼 肉 ﹕  歸 心 ﹐ 脾 經 。

Medical functions:

藥理﹕

 

fungus inhibition: water extract of long yan rou (1:2), inhibits Microsporon Audouini in test tube.

抑菌試驗:龍眼肉的水浸劑(12), 在試管內對奧杜盎氏小芽胞癬菌有抑制作用。

Actions & Indications:

主治﹕

  1. Root: for Chyluria , leucorrhea, rheumatoid arthritis.

  2. Leaves: prevents epidemic influenza, epidemic meningitis, influenza, enteritis, eczema of the scrotum.

  3. Long yan rou (edible part of the fruit): as tonic after illnesses, neurasthenia, forgetfulness, palpitation, insomnia.

  4. Seeds: stomachache, scalding, bleeding from cut,

 

  1. 根: 乳糜尿,白帶,風濕關節痛。

  2. 葉: 預防流行性感冒,流行性腦脊髓膜炎,感冒,腸炎;外用治陰囊濕疹。

  3. 假種皮(龍 眼肉): ,病後體虛,神經衰弱,健忘,心悸,失眠。

  4. 種子(龍 眼核) 胃痛,燒燙傷,刀傷出血,疳氣痛;外用治外傷

Chemical ingredients:

化學成份﹕

meat (long yan ruo) contains:

假種皮(龍 眼肉)

vitamin A, B1,  B2 , P, C

維生素AB1﹐  B P, C

glucose

葡萄糖

cane sugar

蔗糖

tartaric acid

酒石酸

seed contain

種子含

saponin

皂貳

pigments

色素

animo acid

氨基酸

2-amino-4-hydroxymet-hylhex-5-ynoic acid

2-氨基-4-羥 基甲基--5-炔 酸

2-am-ino-4-hydroxyhept-6-ynoic acid

2-氨基-4-羥 基--6-炔 酸

fat

脂肪油

tannin

鞣質

oil from seeds contain:

種子油含

dihydrosterulic acid

二氫蘋婆酸

leaves contain:

葉含:

quercetin

槲皮素

quercitrin

槲皮

friedelin,C30H50O

無羈帖

16-hentriacontanol,C31H64O

16-三十一醇

epifriedelinol,C30H52O

表無羈帖醇

β-sitosterol

β-谷 甾醇

sigmateryl-D-glucoside

豆甾醇及豆甾醯-D-葡 萄糖式

Dosage:

用量﹕

long yan rou: 6 to 15 g.

Samples of formulae:

處方舉例﹕

For insomnia caused by heart, spleen and blood deficient:

Prescription: long yan rou 30 g, da zao  5 pieces, rice 60 g.

Add water to make into porridge at night and take before bed time.

治心脾血虚引起的失眠

眼肉30克, 大棗5枚 ,粳米60克

加 水。 晚上 睡前煮成 粥

Modern Research:

現代研究﹕

antifatigue effects of longan [1]

抗疲倦作用 【1】

Toxicity & Cautions:

毒素與禁忌﹕

do not  use long yan rou in cases of phlegm-fire (damp heat in the middle jiao / burner)

內有痰火,中焦濕滯停飲者忌服

 

[1] Phytother Res. 2010 Apr;24(4):622-4.

大 部 份 質 料  翻 譯 自 葫 蘆 中 醫 藥 專 業 網 。

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Last update: May 6, 2011; 10:56 p.m. LAH