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2007 | nr 743 | 59--90
Tytuł artykułu

Właściwości zielonej herbaty

Warianty tytułu
The Properties of Green Tea
Języki publikacji
Zielona herbata jest jednym z najstarszych napojów świata. Chociaż dla Chińczyków i Japończyków od pięciu tysięcy lat stanowi napój codziennie spożywany, to do Europy została sprowadzona dopiero na początku XVII w., nie cieszyła się jednak popularnością z racji zainteresowania głownie czarną herbatą. Obecnie wraz ze wzrostem świadomości żywieniowej społeczeństw, zielona herbata w Europie zdobywa coraz większe znaczenie i uznanie. Jej spożycie w Niemczech, Francji, Włoszech i Anglii w ciągu ostatnich lat wzrosło trzykrotnie, a w Polsce również wzbudza coraz większe zainteresowanie. W pracy omówiono proces przetwarzania, rodzaje, właściwości oraz skład chemiczny zielonej herbaty.
Green tea is one of the oldest beverages in the world. In Asiatic countries it has been known and appreciated for centuries. Now it becomes to arouse consumers' interest also in other regions of the world, especially in Europe. The secret of green tea, at the stage of its production, is that the leaves do not undergo the fermentation process. The harvested tea leaves are put into heated tin containers where in few minutes they lose water. Then the leaves are rolled and dried. In the paper the processing of tea leaves into green tea is discussed, and the sorts of green tea available in the world are presented, attention being focused on the characteristics of the infusion obtained from them. The green tea market in Poland is presented and the process of brewing green tea, ensuring the optimal quality of the infusion, is discussed. Special attention is given to the chemical composition of green tea which determines its favourable effects on human health. Basing on the latest reports concerning the research works carried out in the world on green tea components and the effect of regular consumption of that tea on human organism, the health properties of green tea are presented, emphasis being laid on its antioxidative, anticancerogenous and anti-inflammatory properties. Green tea prevents the formation of thrombuses, decreases blood cholesterol level, shows antiviral, antibacterial, and other properties which are currently under investigation (original abstract).
Opis fizyczny
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