-
2013/10
17
-
EGCG monomer
source:local time:2013/10/17
EGCG monomer
Molecular formula: C22H18O11
EGCG is the most abundant catechins in tea and is a potent antioxidant that may have therapeutic
applications in the treatment of many disorders. It is found in green tea but not black tea. During
black tea production, the catechins are converted to theaflavins and thrarubigins. In a high temperature
environment, an epimerization change is more likely to occur, the amount lost in a brief exposure is
insignificant. In fact, even when special conditions were used to create temperatures well above that
of boiling water, the amount lost increased only slightly.
Additionally, it was found to be a strong topoisomerase inhibiotr, similar to some chemotherapeutic
anticancer drugs. This property might be responsible for observed anticarcinogenic effects; however,
there is also a carcinogenic potential. High intake of polyphenolic compounds during pregnancy is
suspected to increase risk of neonatal leukemia. Bioflavonoid supplements should not be used by
pregnant women. EGCG has been possibly implicated in reducing the risk of cancer, and in increasing
fal-loss. Further studies are underway to investgate such possibilities in human subjects. It is believed
by some to improve cholesterol levels. However studies have not found such a link. Some evidnece
suggests that high consuption of tea can reduce the risk of dementia, and the risk of certain cancers.
UVspectrum