Diurnal Changes in Uric Acid Metabolism of Rats Fed a Casein Diet |
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Authors: | Takako Yokozawa Kumiko Kanai Hikokichi Oura |
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Institution: | Department of Biochemistry, Research Institute for Wakan-Yaku (Oriental Medicines), Toyama University, Gofuku, Toyama 930 |
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Abstract: | Direct gas chromatographic determination of tobacco smoke was developed. Tobacco smoke condensate was collected on a glass fiber filter and the components were converted into their trimethylsilyl derivatives and then subjected to glass capillary column gas chromatography. By this method, all tobacco smoke components, including unstable phenolic substances and water-soluble polyhydroxy compounds, were simultaneously determined. Compositional differences between lamina and midrib smoke of flue-cured tobacco leaves were also clarified by the method. The results indicate that there are quantitative differences in nicotine, phenols, levoglucosan, quinic acid γ-lactone and the other major components between lamina and midrib smoke. |
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Keywords: | Diabrotica undecimpunctata howardi Barber 10-methyl-2-tridecanone Grignard coupling metathesis pheromone |
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