The castor oil plant is originally native to Africa, but is cultivated all over the world as a commercial or ornamental plant. It belongs to the Euphorbiaceae family. The seeds, used for making oil, contain ricin, a potent poison that damages animal tissue. A fatal dose for an adult is four to eight seeds. Symptoms of ricin poisoning can appear up to 36 hours after ingestion, but usually within two to four hours. It is characterized by a burning sensation in the mouth, nausea, vomiting, diarrhea and lethargy. Within several days, dehydration, reduced blood pressure and reduced urination appear. Without medical attention, death occurs within three to five days.
How to make castor oil mill from castor bean ? : www.castoroilmill.com/News/191.html
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