Effect of fluoride on chemical constituents of tea leaves.

摘要: Seedlings of the tea plant, Camellia sinensis (L.), were grown hydroponically for 30 days to study effect fluoride (F) on chemical composition and minerals in leaves. Polyphenols, total catechins, protein decreased significantly with increasing exposure F. Except epigallocatechin, most monomeric catechins also significantly. These changes are not considered beneficial. On other hand, content amino acids solublesugars increased significantly, but differences caffeine water-soluble extracts statistically significant. magnesium manganese, uptake was inhibited, whereas F markedly. results suggest that main constituents leaves under treatment individuals who consume these teas may ingest excessive amounts Therefore, direction our further will be find ways reduce levels plants.