# one hundred #
When you were a kid, did you ever see a stingy fruit like this in the field? Have you ever been curious
This is our main actor today, known as the “ten dangerous plants of the world”, the biological weapons convention (bwc) and the chemical weapons convention (cwc), which were recorded as biological and chemical weapons in 1992 and 1997, respectively。
In the history of the united states government, there have been a number of “narctic” incidents contaminated with ricin. Trump and obama have both been killed by ricin letters, and, of course, the security around a country’s top leadership is not blown, so every letter with ricin is blocked from the president。
A series of “drug letters” has brought u. S. Law enforcement agencies and counter-terrorism services under threat, and the letter service has temporarily suspended the receipt of paper mail for “drug” incidents。
The most classic case in history of the death of ricin toxin was in 1992 when a famous bulgarian playwright and novelist, markov, was assassinated in london with an umbrella gun with ricin, and died four days later because the toxin had no cure。
Well, you might want to ask, is ricin so toxic that daily contact or miseating is life-threatening? In general, accidental exposure is unlikely to lead to poisoning。
Although all parts of the ricin strain contain more or less toxins, the highest levels are found in face-to-face seed. The ricin toxin takes four forms, of which ricin is the most toxic and a lethal plant protein. None of the other three types of lysin, ricin sterilizer or blood cell condensate are as toxic as toxic proteins。
After entering the internal organs of mammals, toxins inhibit the activity of the cells in the body, resulting in the eventual death of proteins that cannot be synthesized in the animal. The ricin protein is 5,000 times more toxic than cyanide and more toxic than cobra's venom, which is the most known plant protein。
However, natural ricin contains low levels of ricin toxin and its toxicity is relatively limited. It is only when an adult takes more than eight doses at a time that symptoms of intoxication can become apparent. The common use of ricin oil, which is extracted through high temperatures, can cause damage to ricin toxins under these conditions. Therefore, more pure ricin toxins can be obtained through chemical refining and separation。
Indeed, countries like the united states and the united kingdom have been trying to use ricin for war. As early as the two world wars, the united states and canada attempted to prepare toxic aerosols and warheads through ricin toxin。
However, as ricin is not toxic enough to function for a long time, it is not widely used if it is not used on a large scale as a biological warfare agent. However, ricin is often used by terrorists because of its easily prepared characteristics。
The ability of ricin to perform is related to the toxic intensity and manner of poisoning, which is more toxic by inhalation than by ingestion. After the poisoning, there is usually a four-to-eight h latency period。
You're wondering if this plant is so toxic, it's included in chemical and biological weapons. In fact, ricin contains ricin, but it's precious and of great economic value。
Omer is a non-eating oil crop and one of the world's 10 largest oil crops. There are many aliases such as cannabis, grass, oxen, and so forth, which are widely cultivated in tropical and subtropical areas worldwide。
The ricin leaves can be used to graze; the ricin's straws can be plated and paper made; and the ricin's leaves can be drugged. The ricin is a natural green fertilizer that contains high proteins and which, when detoxicated, can be used as fertilizer for green plants。
Leachate extracts and staves can be used to prepare green pesticides and can be degraded by nature; most importantly, it is a very important chemical feedstock。
The ricin oil is a non-dry oil derived from the ricin seed. One important reason why ricin oil can be an important chemical material is that it is not only cheap but also a renewable resource that can replace oil, known as “oil grown from the land”。
The ricin oil contains a large amount of ricin oil, with a particular structure and nature, and its luminous and viscosity allows it to react with other chemicals and can be used to produce thousands of chemical derivatives such as lubricating oil, paint, etc。
Products that can be extracted from oil can almost all be synthesized through ricin. In addition to preparing derivatives, ricin oil has many uses. Leprosy oils can be used in the preparation of biodiesel, in the coating of synthetic ethanol acid resin and in the synthesis of new materials such as polyurethane. As a result, ricin is grown and studied as a strategic commodity in many industrialized countries。
Artificial ricin was introduced into europe about 2,500 years ago, to india about 2,000 years ago and to china via india's ancient silk route about 1700 years ago。
Lu jing of the west wrote in the episode: "mima, who is like a tree." the description is very similar to that of the ricin plant. Together with the records in volume 6 of the tang dynasty's doroni monument, "mima, obscurantism, grass-roots name" it is assumed that si jin was brought into china some 1700 years ago。
After its introduction into china, ricin was first grown only in the southern region, and the warm and wet south was more suitable for planting ricin because of its intolerant cold。
At the time of the mingqing, a number of local capitals and counties had recorded planting of ricin, at a time when it was built on the south-east coast, in anhui, and in henan, north-east and even north-east. It can be seen that during this period, ricin has been able to overcome the growth constraints of environmental factors such as geographical temperature and have taken root in much of china。
During the tang song period, our technological level was already able to extract ricin oil for use in industry and medicine. By the beginning of the twentieth century, rapid industrial development in the world and the surge in demand for ricin oil had led countries to vigorously develop the ricin-growing industry。
At the beginning of the twenty-first century, our country was transformed from an exporter to an importer of ricin raw materials, owing, inter alia, to the reduction in the area under ricin cultivation and the lack of maturity of the technology used to extract ricin oil。
Our annual demand for ricin seeds amounts to more than 400,000 tons, but the average annual output is less than 200,000 tons. It was therefore urgent to expand the area under ricin cultivation and increase its production。
The current shortfall in the area under ricin cultivation is mainly due to the reduction of land suitable for ricin cultivation in the country, as well as the relative dispersion of areas under cultivation in the country and the fact that the fragmented pattern of cultivation is not conducive to the production and management of scale. A survey and database of areas suitable for ricin cultivation, rationalization and exploration of scalding patterns would therefore contribute to the development of the ricin cultivation industry and thus increase the area under cultivation。
Of course, our supply of ricin production is also linked to the scarcity of excellent varieties of ricin, which is generally low. Therefore, r&d should focus on the selection of higher oil-bearing quality varieties through different ricin breeding techniques。
Today, oil resources were becoming increasingly valuable and, as a renewable resource that could replace oil, ricin oil was vital to the country's future industrial development. It is believed that, thanks to the efforts of the state to encourage support and researchers, our ricin industry will grow ever better。
