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Semen Canavaliae (Daodou)–sword bean

June 24th, 2009

Semen Canavaliae (Daodou)Origin

Sword bean is dried ripe seed of Canavalia gladiate( Jacg. ) DC. The fruit is collected in autumn when ripe, and the drug is gathered, and dried in the sun.

Description and Identification

Flattened-ovoid or flattened-reniform,2 ~ 3.5cm long, 1 ~ 2cm wide,0.5 ~ 1.2cm thick. The outer surface pale red to reddish-purple, slightly shrunken, somewhat lustrus. The edge with a black wyebrow-shaped hilum,about 2cm long,exhibiting 3 white fine striations. Texture hard,uneasily broken. Testa coriaceous, the inner surface brownish-green, lustrous; cotyledons 2, yellowish-white oily. Odourless; weak in taste, bean-like on chewing.

Chemical Ingredients

It has canavaline,etc.

Property and Channel Tropism

Property: sweet in taste, warm in nature.
Channel tropism: stomach, kidney.

Action and Indictions

To warm the stomach and check its upward adverse movement. Hiccup and vomiting of deficiency-cold type.

Place of Production

Guangdong, Hunan, Hubei, Jiangsu, Zhejiang, Anhui, Sichuan, shaanxi, etc.

Recipes of Medicated Diet



1. DaoDouYaoZi
Sword Bean and Pig’ s Kidney

[ Ingredients ]
2 dao dou, sword bean ( Semen Canavaliae )
1 pig’s kidney
1 piece of lotus leaf

[Preparation]
Remove the smelly gland of pig’s kidney. Put dao dou into the kidney. Warp the kidney with the lotus leaf. Bake it over the bonfire. Take it every night.

[Effects and Indications]
Warming the middle energizer, benefiting kidney, replenishing primordial qi.
It acts on pain in the kidney. People with stomach heat can not take it.

2. Jiang Shi Dao Dou Yin
Persimmon Calyx and Sword Bean Decoction

[Ingredients]
5 pieces of shi di, persimmon calyx ( Calyx Kadi)
20g dao dou, sword bean ( Semen Canavaliae )
3 pieces of ginger ( Rhizoma Zingiberis Officinalis Recens )
suitable amount of brown sugar.

[Preparation]
Boil chopped shi di,chopped dao dou and ginger piece. Filtrate the soup and add suitable amount of brown sugar. Serve.

[Effects and Indications]
Warming the middle energizer, arrestig vomitting. Hiccup, vomiting due to deficiency and cold.

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