__________ are poisonous substances of natural origin produced by an animal, plant, or microbe.
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- BIOLOGICAL TOXINS. Toxins are defined as any toxic substance of natural origin produced by an animal, plant, or microbe. They are different from chemical agents such as VX, cyanide, or mustard in that they are not man-made.
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toxin Toxins can be products or byproducts of ordinary metabolism, such as lactic acid, and they must be broken down or excreted before building up to dangerous levels. Toxins can facilitate survival, as with snake venom that kills or immobilizes prey, or cyanide produced by some plants as a defense against being eaten.
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- Although most of the MEK in the environment is synthetically produced, some natural sources exist including some foods (raw chicken, milk, some cheeses), certain plants and trees, including those used for food, and tobacco smoke.
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toxin Definition. Technically, a poison produced by the metabolic activity of a microorganism (such as Clostridium botulinum), an animal (such as snake), or plant (such as nightshade) which, when introduced in a living organism, acts as antigen against which the organism produces antibodies.
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Phytotoxin Phytotoxin is an umbrella term that refers to substances that are inhibitory to the growth of or poisonous to plants. Phytotoxic substances may result from human activity, as with herbicides, or they may be produced by plants, by microorganisms, or by naturally occurring chemical reactions. A good soil will protect plants from toxic concentrations of such substances by ventilating gases, decomposing or absorbing organic toxins, or suppressing toxin-producing organisms. The term is also sometimes
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- Contents. Mycotoxins are poisonous chemical compounds produced by certain fungi. There are many such compounds, but only a few of them are regularly found in food and animal feedstuffs such as grains and seeds. Nevertheless, those that do occur in food have great significance in the health of humans and livestock.ycotoxins are poisonous chemical compounds produced by certain fungi. There are many such compounds, but only a few of them are regularly found in food and animal feedstuffs such as grains and seeds.
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Toxins Toxins are effective and specific poisons produced by living organisms. They usually consist of an amino acid chain which can vary in molecular weight between a couple of hundred (peptides) and one hundred thousand (proteins). They may also be low-molecular organic compounds.Toxins are produced by numerous organisms, e.g., bacteria, fungi, algae and plants. Many of them are extremely poisonous, with a toxicity that is several orders of magnitude greater than the nerve agents.hey usually consist of an amino acid chain which can vary in molecular weight between a couple of hundred (peptides) and one hundred thousand (proteins). They may also be low-molecular organic compounds. Toxins are produced by numerous organisms, e.g., bacteria, fungi, algae and plants.
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- Later confirmation was given that natural fats and oil are formed of complex mixtures of various molecular species. This complexity can be deduced from the fatty acid analyses of purified triacylglycerols from vegetal or animal origin.
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The drugs derived from deadly poisons Botulinum toxin is just one example of extraordinarily dangerous poisons that have useful medical applications. Captopril, a $1bn antihypertensive drug, was developed from studies made on snake venoms. Exenatide, marketed as Byetta, is an effective and extremely lucrative drug used to treat type-2 diabetics.any people pay large amounts of money to have it injected into their foreheads. It is botulinum toxin-better known as Botox-a toxin produced by bacteria first discovered in poorly prepared sausages during the 18th Century. It was named after the Latin for sausage-botulus.
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- Neurotoxicity is toxicity in the nervous system. It occurs when exposure to natural or artificial toxic substances, which are called neurotoxins, alters the normal activity of the nervous system in such a way as to cause damage to nervous tissue.
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Poison The GHS pictogram for poisonous substances. The skull and crossbones has long been a standard symbol for poison. In biology, poisons are substances which cause disturbances to organisms, usually by chemical reaction or other activity on the molecular scale, when a sufficient quantity is absorbed by an organism.The fields of medicine (particularly veterinary) and zoology often distinguish a poison from a toxin, and from a venom.Toxins are poisons produced by organisms in nature, and venoms are toxins which are injected by a bite or sting (this is exclusive to animals).ubstances which are not legally required to carry the label poison can also cause a medical condition of poisoning. Some poisons are also toxins, which is any poison produced by animals, vegetables or bacterium, such as the bacterial proteins which cause tetanus and botulism.
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- Products of animal origin such as tissues, milk, and eggs contain different antimicrobial agents that are. mainly in the form of peptides (polypeptides). In most cases natural antimicrobials are extracted and purified to be tested. or applied to food products. Extraction and purification may alter the chemical structure of natural antimicrobials and. affect their functionality.
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Natural product A natural product is a chemical compound or substance produced by a living organism—that is, found in nature.
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Toxin Toxins are often distinguished from other chemical agents by their method of production—the word toxin does not specify method of delivery (compare with venom and the narrower meaning of poison—all substances that can also cause disturbances to organisms). It simply means it is a biologically produced poison.
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BOTULINUM TOXIN Introduction. Botulinum toxin, also called “miracle poison,” is one of the most poisonous biological substances known.[ 1 ] It is a neurotoxin produced by the bacterium Clostridium botulinum, an anaerobic, gram-positive, spore-forming rod commonly found on plants, in soil, water and the intestinal tracts of animals.otulinum toxin, one of the most poisonous biological substances known, is a neurotoxin produced by the bacterium Clostridium botulinum. C. botulinum elaborates eight antigenically distinguishable exotoxins (A, B, C 1, C 2, D, E, F and G).
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toxin poison produced by living organisms. Toxins are classified as either exotoxins or endotoxins. Exotoxins are a diverse group of soluble proteins released into the surrounding tissue by living bacterial cells. Exotoxins have specific reaction sites in the host; e.g., tetanus and botulinum exotoxins affect nerve tissue, and streptococcal toxins attack vascular tissue.
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- Ricin is a protoplasmic poison prepared from castor beans after the extraction of castor oil therefrom. It is most effective as a poison when injected intravenously or inhaled, the latter requiring extreme comminution and small particle size to be effective.
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- › biology a ​poisonous ​substance, esp. one that is ​produced by ​bacteria and ​causes ​disease. (Definition of toxin from the Cambridge Academic Content Dictionary © Cambridge University Press).
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toxin animal toxin, zootoxin-a toxin resembling bacterial toxins in its antigenic properties that is found in the fluids of certain animals. bacterial toxin-any endotoxin or exotoxin formed in or elaborated by bacterial cells. cytotoxin-any substance that has a toxic effect on cells.. toxin-a poisonous substance produced during the metabolism and growth of certain microorganisms and some higher plant and animal species. ricin, ricin toxin-a toxic protein extracted from castor beans; used as a chemical reagent; can be used as a bioweapon; one milligram of ricin can kill an adult.
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poison endotoxin - a toxin that is confined inside the microorganisms and is released only when the microorganisms are broken down or die. toxin - a poisonous substance produced during the metabolism and growth of certain microorganisms and some higher plant and animal species. exotoxin - a toxin that is secreted by microorganisms into the surrounding medium.
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- Neurotoxicity occurs when exposure to natural or artificial toxic substances, which are called neurotoxins, alters the normal activity of the nervous system in such a way as to cause damage to nervous tissue.
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- toxin. a poison, especially a protein or conjugated protein produced by certain animals, some higher plants, and pathogenic bacteria. Antigenic toxins, produced by bacteria or helminths, stimulate production of antitoxins.Exotoxins are produced by bacteria and diffuse into surroundings, e.g. tetanus toxin, or can be ingested preformed, e.g. botulinum toxin.ntigenic toxins, produced by bacteria or helminths, stimulate production of antitoxins. Exotoxins are produced by bacteria and diffuse into surroundings, e.g. tetanus toxin, or can be ingested preformed, e.g. botulinum toxin.
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- Ricin is a type of biological toxin that is predominantly derived from the bean of the castor plant. Log in to see link for more information. Ricin is a type of biological toxin that is predominantly derived from the bean of the castor plant. Log in to see link for more information.
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toxin Related Terms. Technically, a poison produced by the metabolic activity of a microorganism (such as Clostridium botulinum), an animal (such as snake), or plant (such as nightshade) which, when introduced in a living organism, acts as antigen against which the organism produces antibodies.
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- The toxins involved in mushroom poisoning are produced naturally by the fungi themselves, and each individual specimen of a toxic species should be considered equally poisonous. Most mushrooms that cause human poisoning cannot be made nontoxic by cooking, canning, freezing, or any other means of processing.ngestion of any number of Inocybe or Clitocybe species (e.g., Inocybe geophylla, Clitocybe dealbata) results in an illness characterized primarily by profuse sweating. This effect is caused by the presence in these mushrooms of high levels (3- 4%) of muscarine.
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Poison Any substance dangerous to living organisms that if applied internally or externally, destroy the action of vital functions or prevent the Continuance of life. Economic poisons are those substances that are used to control insects, weeds, fungi, bacteria, rodents, predatory animals, or other pests.