Progress in Research on Antibacterial, Antiviral and Immunopotentiation Effects of Tea Components

Tea drinking is of many benefits to the health of humans, such as antioxidation, anti-aging, antitumor and decreasing the morbidities of some diseases. In recent years, the antibacterial and antiviral effects as well as immunopotentiation of tea components have been reported increasingly. The progress in research on the antibacterial, antiviral and immunopotentiation effects of major tea components, such as tea polyphenol, tea pigment, tea polysaccharide and theanine, are reviewed in this paper.