News tagged with pyrrolizidine alkaloids
Houndstongue is a controllable problem on range and wild lands
May 28, 2009 |
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(PhysOrg.com) -- Houndstongue--also known as beggar's lice, dog's tongue, sheep bur and woolmat--is not only a general nuisance to those of you who find its sticky seeds stuck in your shoelaces or the hair of your dogs and ...
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A newly discovered chemical weapon in poison frogs' arsenal
Jun 04, 2009 |
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New research documents a surprising chemical weapon used by some Amazonian poison frogs. The study identified for the first time a family of poisons never before known to exist in these brightly colored creatures ...
Gene-altering compounds released from forest fires
Apr 29, 2009 |
3 / 5 (1) |
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Scientists in Washington State are reporting the first discovery of potent mutagenic substances in smoke from forest fires that often sweep through huge stands of Ponderosa pine in the western United States ...
Doppler Ultrasound Helps Scientists Understand Fescue Toxicosis
Oct 21, 2009 |
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(PhysOrg.com) -- Doppler technology -- the very same technology used by meteorologists to track thunderstorms -- is being used by Agricultural Research Service (ARS) scientists to better understand the rate ...
The secret behind silkworm's hardy stomachs
Biology /
May 27, 2008 |
3.7 / 5 (6) |
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Silkworms have a unique ability to eat toxic mulberry leaves without feeling ill, and researchers have come one step closer to understanding why: silkworms contain a special digestive enzyme that is not affected ...
The Beaver as Chemist: Total Synthesis of Enantiomerically Pure Nupharamine Alkaloids from Castoreum
Feb 16, 2009 |
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(PhysOrg.com) -- Castoreum, the dried scent glands of the Canadian beaver, was once one of the most valuable scent components derived from animals. Castoreum contains a complex mixture of substances, including a number of ...
Chemists synthesize herbal alkaloid
Apr 15, 2009 |
4.8 / 5 (5) |
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The club moss Lycopodium serratum is a creeping, flowerless plant used in homeopathic medicine to treat a wide variety of ailments. It contains a potent brew of alkaloids that have attracted considerable scient ...
Chemists synthesize fungal compound with anti-cancer activity
Apr 26, 2009 |
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(PhysOrg.com) -- Ten years ago, William Fenical of the Scripps Institution of Oceanography isolated from an ocean-living fungus a compound that has since shown the ability to kill cancer cells in the lab. ...
Disputed total synthesis of quinine by Woodward and Doering confirmed
Jan 31, 2008 |
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Drugs derived from cinchona bark, known as cinchona alkaloids, have been used in healing from ancient times. The most prominent representative of this group is quinine, a bitter substance contained in beverages such as tonic ...
Engineers build mini drug-producing biofactories in yeast
Aug 15, 2008 |
4.6 / 5 (25) |
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Researchers at the California Institute of Technology have developed a novel way to churn out large quantities of drugs, including antiplaque toothpaste additives, antibiotics, nicotine, and even morphine, using mini biofactories--in ...
Opium and marijuana research go underground
Biology /
Oct 31, 2007 |
4.7 / 5 (3) |
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The world’s leading expert on the opium poppy has joined forces with researchers working on another infamous drug-producing plant – cannabis – in hopes of finding new uses for the much-maligned sources of heroin and marijuana.
List of search results for pyrrolizidine alkaloids
