Next, Bian Xiao will answer your questions. Concha Canadensis is an edible leguminous food, which is the pod or seed of the leguminous plant Concha Canadensis. Because its shape is very similar to that of sword bean, it is called sword bean. This plant can produce fresh soybean milk after flowering in May and June every year. Its pods are about 30 cm long and can be fried as vegetables after picking. Conara is a twining herb, which can reach several meters long, with pinnately compound leaves, oval leaflets, broad wedge-shaped base, oblique lateral leaflets, short petiole, hairy petiole, extremely short pedicel, ovate bracteoles, caducous, white or pink corolla, wide oval flag petal, concave top, linear ovary and hairy. Pods are banded, slightly curved, and seeds are oval or oblong. They like temperature and heat resistance, strong light and strong adaptability to soil. It is distributed in all provinces south of the Yangtze River in China and widely distributed in tropical and subtropical regions and Africa.

Kidney beans are rich in protein, starch, vitamins, minerals and other nutrients. Eating kidney beans can supplement nutrition, strengthen physical fitness, enhance resistance, absorb these nutrients as soon as possible, meet the needs of normal metabolism of human body, and improve the functions of various organs of the body. However, sword beans also have shortcomings, so you should pay attention to selecting high-quality sword beans before eating.

1. When buying tender pods, don't buy hard, inedible pods with yellow-brown pods.

2. When buying dried seeds, you should see that the seeds are moth-free, the epidermis is smooth and full, pink or lavender, oblate and oval, and the umbilicus is dark brown. Fresh dry seeds are easy to cook and crisp, and are sandy and waxy.

3. The surface of inferior sword beans is mostly light brown or yellowish brown, with dull surface, uneven size and dry particles.

Matters needing attention

1. Overdose of concanavalin 1-2 hours may lead to toxic reaction. The clinical manifestations are nausea and vomiting. Spastic convulsions occurred after repeated vomiting, and then coma occurred. Heart rate is slightly higher, blood pressure is higher. Coma can last 1-2 days. Persistent, spasmodic convulsion, 2-3 minutes 1 time, easy to cause shock.

2. In order to prevent poisoning, the dose should be controlled within a safe range.

3. Patients with stomach heat should not eat.