The study also suggests this highly beneficial Chinese remedy is linked to playing a vital role in protecting the body against cancer.
The team wanted to know if the protective properties of green tea - which have previously been shown to be present in the undigested, freshly brewed form of the drink - were still active once the tea had been digested.
Digestion is a vital process which provides our bodies with the nutrients we need to survive. But, as one researchers said, it also means that just because the food we put into our mouths is generally accepted to contain health-boosting properties, we can't assume these compounds will ever be absorbed by the body:
"What was really exciting about this study was that we found when green tea is digested by enzymes in the gut, the resulting chemicals are actually more effective against key triggers of Alzheimer's development than the undigested form of the tea,"
In addition to this, we also found the digested compounds had anti-cancer properties, significantly slowing down the growth of the tumor cells which we were using in our experiments."
When ingested, the polyphenols are broken down to produce a mix of compounds and it was these the team tested in their latest research.
One of the researchers of the study explained:
"There are certain chemicals we know to be beneficial and we can identify foods which are rich in them but what happens during the digestion process is crucial to whether these foods are actually doing us any good."
"The digested chemicals protected the cells, preventing the toxins from destroying the cells.
"We also saw them affecting the cancer cells, significantly slowing down their growth.
Green tea contains a high level of antioxidants known as polyphenols. When present in tea, these polyphenols are called catechins. The most abundant catechin found in green tea is EGCG (or epigallocatechin-3-gallate). This antioxidant is thought to play a pivotal role in the positive health effects of green tea.
Research Paper details:
Okello EJ, McDougall GJ, Kumar S, Seal CJ. In vitro protective effects of colon-available extract of Camellia sinensis (tea) against hydrogen peroxide and beta-amyloid (A²(1-42 border=0> induced cytotoxicity in differentiated PC12 cells. Phytomedicine, 2010.
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