The Zutphen Study. Effect of black tea drinking on blood lipds, blood pressure and aspects. Chemopreventative effects of tea extracts and various components on human pancreatic and prostate tumor cells in vitro. Naturally occurring, nitrogen-containing compounds that are alkaline in solution. They usually have a bitter taste and are characterised by powerful physiological activity.
Examples are nicotine and caffeine.
Antioxidant A compound which retards oxidation. Caffeine An alkaloid found in tea and coffee which acts as a nerve stimulant and diuretic. Catechins A group of related polyphenolic compounds which occur in plants and are darkened by the action of certain plant enzymes and oxygen an example of browning of cut fruit and vegetables. Catechins can function as antioxidants. Cardiovascular concerning the heart and blood vessels.