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Ricin (/ ˈ r aɪ s ɪ n / RY-sin) is a lectin (a carbohydrate-binding protein) and a highly potent toxin produced in the seeds of the castor oil plant, Ricinus communis.The median lethal dose (LD 50) of ricin for mice is around 22 micrograms per kilogram of body weight via intraperitoneal injection.
Ricinus communis, the castor bean [1] or castor oil plant, [2] is a species of perennial flowering plant in the spurge family, Euphorbiaceae. It is the sole species in the monotypic genus, Ricinus, and subtribe, Ricininae. The evolution of castor and its relation to other species are currently being studied using modern genetic tools. [3]
Castor bean has bold, tropical-looking foliage and spiny capsules. At maturity, the capsules split open to reveal tan seeds marbled with dark brown, which contain the potent toxin ricin.
Ricinine is a toxic alkaloid found in the castor plant. [2] It can serve as a biomarker of ricin poisoning. [3] [4] It was first isolated from the castor seeds by Tuson in 1864. [5] [6] Ricinine has insecticidal effects. [7] It sublimes between 170 and 180 °C at 20 mmHg.
Axel Rudakubana, 18, will appear at Westminster Magistrates’ Court by video link on Wednesday charged with production of a biological toxin called ricin
castor oil plant, castor bean, Palma Christi Euphorbiaceae: The seeds contain ricin, an extremely toxic and water-soluble ribosome-inactivating protein; it is also present in lower concentrations in other parts of the plant. Also present are ricinine, an alkaloid, and an irritant oil.
Castor oil is a type of vegetable oil derived from the seeds of the castor bean plant (ricinus communis), which is naturally found in parts of Africa, India and South America, Dr. Joshua Zeichner ...
Castor bean Also known as palma Christi, fatal even in small amounts [3] [16] Robinia pseudoacacia: Black locust Also known as false acacia [3] [4] Romulea: Known poisonous species include Romulea longifolia (Guildford grass) and R. rosea (onion grass or onion weed) [10] [22] Rudbeckia laciniata: Goldenglow, coneflower, or thimbleweed [8] Senecio