Green tea (Camellia sinensis) is consumed daily between the meals or after meals in Japan and other Asian countries. In recent years, green tea and its major polyphenolics have been demonstrated to prevent chemically induced tumors in a variety of experimental animal models system. The exact mechani
Proconvulsive effect of tea (Camellia sinensis) in mice
β Scribed by A. Gomes; M. Das; J. R. Vedasiromoni; D. K. Ganguly
- Publisher
- John Wiley and Sons
- Year
- 1999
- Tongue
- English
- Weight
- 58 KB
- Volume
- 13
- Category
- Article
- ISSN
- 0951-418X
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β¦ Synopsis
Investigations were carried out to evaluate the effect of acute and chronic administration of both black and green tea on three models of experimentally induced convulsions in mice. Tea extract (both black and green) significantly accelerated the onset of convulsion, increased the duration of convulsion and mortality in mice. Since both the extracts failed to alter the GABA level in brain, based on the earlier report that both black and green tea might act on Ca 2 channels, it can be suggested that the observed proconvulsive effect of tea is not mediated through GABA but through Ca 2 channels.
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The effect of gibberellins on tea leaf chemical composition and quality was investigated. The results showed that application of gibberellins was beneficial to green tea quality. Content of amino acids increased by 9 4 % and that of vitamin C by 1743% and tea catechins index increased by 12.9%. The
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