2024年9月6日 · Ricin is a poison found naturally in castor beans. If castor beans are chewed and swallowed, the ricin that comes out can cause injury. Ricin can be made from the waste material left over from processing castor beans. Ricin can be in the form of a powder, a mist, or a pellet. It can also be dissolved in water or weak acid.

Ricin is a toxalbumin and was first described by Peter Hermann Stillmark, the founder of lectinology. Ricin is chemically similar to robin. Ricin is classified as a type 2 ribosome-inactivating protein (RIP).

2025年3月11日 · ricin, toxic protein (toxalbumin) occurring in the beanlike seeds of the castor-oil plant (Ricinus communis). Ricin, discovered in 1888 by German scientist Peter Hermann Stillmark, is one of the most toxic substances known. It is of special concern because of its potential use as a biological weapon. Accidental exposure to ricin is rare and ...

2024年10月20日 · Some sources of lectins are considered seriously poisonous. Castor beans, for example, contain a potent lectin poison called ricin. Damage to the Digestive System. Certain types of lectin may...

2023年7月17日 · Ricin is a naturally occurring carbohydrate-binding protein produced in the seeds of ricinus communis, the plant that produces castor oil. It is toxic when inhaled, ingested, or injected. As few as five to ten micrograms per kilogram can be lethal.

2021年5月1日 · Ricin, a toxic glycoprotein derived from the castor bean plant, is one of the most potent poisons known in the world. Ricin intoxication is a fatal and uncommon medical condition and recently its use as a potential bioterrorism agent has also been reported.

Ricin is a type 2 ribosome-inactivating protein (RIP) composed of A- and B-polypeptide chains covalently linked via a single interchain disulfide bond (S S). Ricin gains cellular entry through the lectin binding properties associated with the 34 kDa ricin B-chain (RTB).

Ricin, the toxic principle of castor seeds (Ricinus communis L.) was first described in 1888 by Stillmark at the University of Dorpat (now Tartu, Estonia), an important centre of pharmacology in the late nineteenth century (Boehm 1874).

2009年12月15日 · Request PDF | Ricin: Chemistry, Sources, Exposures, Toxicology and Medical Aspects | The chapter covers the origins of ricin toxin, which is present in the seeds of the many cultivars of the...

2021年1月1日 · Abrin and ricin are plant toxins derived respectively from castor beans (Ricinus communis L.) and rosary peas (Abrus precatorius L.). They belong to the group of type 2 ribosome-inactivating proteins (RIPs) (Garber 2008).