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Black tea, long known for its antioxidants, immune boosting and antihypertensive properties, could have another health benefit.
Researchers studied the polysaccharide levels of green, oolong and black teas and whether they could be used to treat diabetes.
Polysaccharides, a type of carbohydrate that includes starch and cellulose, may benefit people with diabetes because they help retard absorption of glucose.
The researchers found that of the three teas, the polysaccharides in black tea had the most glucose-inhibiting properties. The black tea polysaccharides also showed the highest scavenging effect on free radicals, which are involved in the onset of diseases such as cancer and rheumatoid arthritis.
Science Daily July 28, 2009
Institute of Food Technologists July 28, 2009