It doesn't "become" toxic, it starts out that way.
Because Ricin inactivates ribosomes, which assemble
amino acids into proteins.
Ricin
Ricin is a toxic substance that comes from the pressed leaves of the castor beans. If the beans of the castor plant are eaten, it could cause harm from the ricin that is formed by the action. Ricin can cause harm through ingestion, inhalation or through contact with the skin.
Ricin
Confirming exposure to ricin is usually impossible. The lethal dose is extremely small, and the protein is quickly distributed in the body. In the famous Markov case, for instance, a tentative diagnosis was made on the basis of the symptoms.Ricin can be detected in the environment, as on surfaces, usually with an immuno assay. It's activity (as opposed to identity) can also be detected with living organisms such as cultured cells, or the older method of injecting suspect material into mice.
It can be the hydrocarbon secretion of many plants , these are such as rosin, shellac, damar, copal, but their are a multitude of synthetic ones; phenolics, acrylics, alkyds and plastics in general. These vary in structure from soft to hard brittle, depending on their molecular weight
ricin
Probably not. Ricin is toxic.
Ricin is a poison derived from castor beans. It can be made from the waste material after processing (mashing) castor beans into castor oil. Although not as lethal as anthrax, ricin prevents cells from producing protein and can lead to death within 36 to 72 hours. In 2013, a Mississippi man, Paul Kevin Curtis, was arrested for sending ricin-contaminated letters to a Mississippi senator and President Obama.
Wood Green ricin plot happened in 2003.
Ricin
The production of ricin is a low-tech endeavor requiring little time or funding.
Hard to detect.but still it is possible. Doctors guess it by Symptom. There is a Special test designed to detect Ricin!
The active poison in the castor bean is ricin, a deadly water-soluble protein called a lectin.
Ricin is a toxic substance that comes from the pressed leaves of the castor beans. If the beans of the castor plant are eaten, it could cause harm from the ricin that is formed by the action. Ricin can cause harm through ingestion, inhalation or through contact with the skin.
Ricin is a proteinic cytotoxin derived from the common castor bean, Ricinis communis. Recovered from the meal of castor beans in the castor oil making process, ricin toxin is perhaps 1,000 fold less toxin that botulinum toxin. Ricin is most toxic if inhaled and least toxic if swallowed. It has the potential to be used as a chemical warfare agent.
Ricin
Cyanide. Strychnine Ricin