A compound in saliva, along with common proteins in blood and muscle, may protect human cells from powerful toxins in tea, coffee and liquid smoke flavoring, according to results of a new study led by investigators at the Johns Hopkins Kimmel Cancer Center. The findings, reported online May 19 in Food and Chemical Toxicology, suggest that people naturally launch multiple defenses against plant chemicals called pyrogallol-like polyphenols or PLPs found in teas, coffees and liquid smoke flavoring. The presence of these defenses could help explain why PLPs are not crippling cells and causing illness as would be expected from their toxic punch and widespread use, the researchers say.
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