Tea is the second most popular drink in the world, second only to ordinary water. It has been drunk for more than one thousand years, and scientists have studied everything so thoroughly that it would seem that there are no secrets left in tea, but at the same time missing a very important component of the water itself.
As recent laboratory studies have shown, there are about 500 compounds in brewed tea, which are quite capable of reacting with chlorine, forming new previously unknown compounds.
In the overwhelming majority of cases, when brewing tea, we use ordinary tap water. So, no matter how well our filters work, chlorine still remains in boiled water, which is used for its disinfecting work.
And, as it turned out, these chlorine residues are quite capable of participating in chemical reactions with tea compounds, resulting in the formation of disinfection by-products (SPD).
An international group of scientists, consisting of representatives of the University of South Carolina (USA) and Tianjin University (China), measured 60 already known PPDs and found that their content in already prepared tea is much lower when compared with the data obtained from the analysis of ordinary tap water …
Scientists explained this unexpected result by the fact that some of the compounds during brewing either evaporated or were absorbed by the leaves of the brewed tea.
But by performing further analysis, the researchers also identified a large number of previously unknown BPDs. What effect these compounds have on human health remains to be seen.
Thus, the researchers, using the method of gas chromatography, high-resolution mass spectrometry, identified 15 compounds that, according to the authors of the work, were obtained during the interaction of chlorine with natural phenolic and also polyphenolic precursors in tea leaves.
In addition, the scientists found that the total mass of organic halogens in PPD was approximately double that in tap water. And of the entire array of detected PPDs, it was possible to identify only 4%, and the remaining 96 (and this is about 500 types) have not been studied, but, despite this fact, according to the researchers’ assumption, they all do not pose a serious threat to human health.
In order to overcome the dangerous level of concentration of these substances, you need to drink about 50 cups of tea in one day.
Well, it turns out that even simple tea carries a lot of surprises. We will wait for the next discoveries of scientists. Well, if you liked this material, then rate it and do not forget to subscribe to the channel. Thank you for the attention!