Eli5 Why is castor oil made from ricinus not toxic, and can prolonged use cause toxicity?

Question

Eli5 Why is castor oil made from ricinus not toxic, and can prolonged use cause toxicity?

In: Biology

Answer 1

The poisonous substances (Ricin mostly) aren’t in the oil but rather the solid parts of the plant. So when pressing the oil out they stay in the remaining plant matter (wich therefore can’t be fed to animals like you’d usually do with such remains)

Ricin doesn’t dissolve in oil (but in water)