Ricinus communis cannot be eaten. The whole plant is poisonous, and its toxic components are ricin and ricin. 2mg of ricin and 0.16g of ricin can cause death in adults. Children can die if they take 3 to 5 raw castor beans. Ricin and ricin can be destroyed and detoxified by heating.

Ricin bean poisoning is caused by ricin. Ricin is highly toxic, irritating the gastrointestinal mucosa, damaging the liver, kidneys, and lymphoid tissues. It can also agglutinate red blood cells, hemolyze, and paralyze the movement and respiratory centers. Adults can die if they accidentally eat more than 10 castor beans, and children can die if they eat 3 to 5 raw castor beans.

Extended information:

Castor seeds can be squeezed for oil. The oil has high viscosity and low freezing point. It is resistant to both severe cold and high temperature. It will not freeze at -8~-10℃ and will not freeze at 500℃. It does not solidify or denature at ~600°C, and has characteristics unmatched by other greases. It is an important raw material for chemical industry, light industry, metallurgy, electromechanical, textile, printing, dye and other industries and medicine.

Castor oil cannot be eaten because castor oil is caused by castor seeds, and castor itself is toxic. If eaten, it can cause food poisoning symptoms such as nausea, dizziness, vomiting, abdominal pain, and diarrhea. In addition, castor oil is mainly used in paint production and metal industry, and is rarely used in the catering industry.

Baidu Encyclopedia-Ricinus communis