Tea is the most widely consumed beverage after water. Teas are generally divided into categories based on processing techniques. The most commonly applied processes are oxidation and fermentation. There are many different tea varieties (Figure 1) including white, yellow, green, oolong, black and post-fermented. Some teas can be modifi ed further by the addition of additives or by blending diffe...

After water, tea is the most popular beverage and is consumed by two thirds of the world’s population. Three types of tea are available; they vary in the processes of drying and fermentation. Besides black tea, which is the most prevalent form (78%), green tea (20%) and oolong (2%) are produced. The tea plant Camellia sinensis is native to South China and was brought to Japan by the Zen priest ...

Green tea is a favorite beverage and its extracts are popular components of dietary supplements. The aim of the present in vivo study was to obtain detailed information about the effect of a standard green tea extract (Polyphenon, P), at different doses, on antioxidant enzymes and oxidative stress markers in murine blood, liver, small and large intestine. In all doses, P improved the oxidative ...

cinogenic, antibiotic, antihypercholesterolemic, antihyperglycemic, antihypertensive, and antiinflammatory actions. In addition, we have demonstrated that green tea and such constituents as fiavonol glycosides, theanine and soluble dietary fiber had a protective effect against D-galactosamine (GalN)-induced liver injury in rats,3'6) We have also found that lipopolysaccharide (LPS)-induced liver...

The concept of prevention of cancer using naturally occurring substances that could be included in the diet consumed by the human population is gaining increasing attention. Tea, next to water, is the most popularly consumed beverage in the world and it is grown in about 30 countries. Abundant data, amassed from several laboratories around the world in the last ten years, provided convincing ev...

Tea is the most popularly consumed beverage worldwide, also was popular in Indonesia. There are three main types of tea: black tea, green tea and Oolong tea. Oolong tea is produced by a partial oxidation of the leaf, intermediate between the process for green and black tea. Most of people in the world consume Black tea. The possible beneficial health effects of tea are being investigated and ha...

Tea (Camellia sinensis) is a widely consumed beverage and has been extensively studied for its cancer-preventive activity. Both the polyphenolic constituents as well as the caffeine in tea have been implicated as potential cancer-preventive compounds; the relative importance seems to depend on the cancer type. Green tea and the green tea catechin have been shown to inhibit tumorigenesis at a nu...

During dental bleaching the staining potential of the surface would increase. This study aims to evaluate the staining susceptibility of one bleached composite resin after the exposure to three different beverages: Peruvian purple corn based beverage (chicha morada), green tea, and distilled water. Thirty disk-shaped specimens of one nanofill composite resin were prepared. The specimens were th...

background and objective: although there are reports in the literature on the antimicrobial effects of green tea, the effect of black tea, the most common beverage in iran, on growth of bacteria, such as streptococcus pyogenes, has not been studied extensively. this study was undertaken to determine the inhibitory effect of black tea on the growth of streptococcus pyogenes in vitro and compare ...

The beverage tea, from the top leaves of the plant Camellia sinensis is one of the most widely used beverages in the world, second only to water. Black and green tea have mostly similar actions. The active components are polyphenols, mainly epigallocatechin gallate in green tea, and the tea leaf polyphenol oxidase mediated oxidation to oolong and black tea, yielding other polyphenols, theaflavi...