Your tea might have disinfection byproducts inside it?

In the global tea market, water is usurped only by this refreshing beverage - making it the second most consumed drink worldwide. Did you know brewing tap water can lead to an accumulation of chlorine-derived disinfection byproducts (DBPs) in brewed teas; however, a team of researchers from Environmental Science & Technology recently uncovered that levels were unexpectedly lower in brewed varieties compared to those encountered during their processing – perhaps owing to differences between brewing methods. Nonetheless, they detected many unknown DBP mixtures whose effects are still unclear; further investigation into these compounds is needed for a fuller comprehension of their potential health risks when consumed.

Though purification is essential to ensure potable water safety, an obstacle lies in the form of DBP generation. Tea contains a multitude of compounds, such as polyphenols and amino acids; caffeine along with other compounds that can react with chlorine to produce potentially harmful DBPs such as 3-chlorodibenzofuran (CDF), which has been implicated in epidemiological studies relating it to cancer and birth defects. Moreover, further contaminants from tap water could result in formation of additional markers for potential health issues - therefore necessitating comprehensive analysis for quantifying sixty known markers found within three green/black teas popular across America

The scientists brewed the teas and then analyzed their composition with gas chromatography-mass spectrometry. The levels of 60 known DBPs were notably elevated in tap water, presumably as a result of some compounds escaping or being absorbed by tea leaves. Nevertheless, only 4% of all organic halogen was attributable to these substances - indicating that most DBPs in tea remain uncharacterized. The team was successful in identifying fifteen potential DBPs - namely compounds resulting from the reaction of chlorine with phenolic and polyphenolic precursors found in tea leaves. Although no "safe" levels have been established for most DBPs, for those governed by regulations an average person would require consuming 18-55 cups of tea per day to exceed EPA's set limits.

Source: ScienceDaily