Monolingual examples (not verified by PONS Editors)

English
It would be nearly 200 years before the active principals, quinine and other alkaloids, of cinchona bark were isolated.
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Cinchona bark, a source of quinine, was the first known treatment for malaria and other tropical diseases.
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Once settled, he dedicated himself to cultivation of cinchona (quina) and its commercialization as well as road construction and land development.
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Quinine occurs naturally in the bark of the cinchona tree, though it has also been synthesized in the laboratory.
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He also conducted research of cinchona extract and rhubarb as possible treatments for cardiac irregularities.
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Cinchona is a plant that can be used for the treatment of malaria and the old pharmacy factory of cinchona still exists in the city.
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Wine was used because some alkaloids of the cinchona bark are not soluble in water, but are soluble in the ethanol in wine.
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It is a crystalline acid obtained from cinchona bark, coffee beans, and other plant products and made synthetically by hydrolysis of chlorogenic acid.
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However, chemical analysis revealed that the proprietary tonic contained 27.55% alcohol plus ammonium chloride, aloin and tincture of cinchona but no gold.
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This combination has been shown in several studies to be more effective than quinine, supposedly due to a synergistic action between the four cinchona derivatives.
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