caa a22 4500 463249135 CHVBK 20180405153334.0 cr unu---uuuuu 170326e20071201xx s 000 0 eng 10.1007/s11130-007-0054-8 doi (NATIONALLICENCE)springer-10.1007/s11130-007-0054-8 Chemical Composition of Green Tea ( Camellia sinensis ) Infusions Commercialized in Portugal [Elektronische Daten] [Márcia Reto, Maria Figueira, Helder Filipe, Cristina Almeida] To evaluate the potential benefits and risks associated with tea consumption it is important to identify the constituents of this beverage. Levels of some minerals, caffeine and catechins in green tea samples commercialized in Portugal were evaluated. Potassium is the metal present in larger amount (92-151mg/l). The content of sodium, calcium, fluoride, aluminium, manganese and iron were 35-69, 1.9-3.5, 0.80-2.0, 1.0-2.2, 0.52-1.9, 0.020-0.128mg/l, respectively. Chromium and selenium were not detected. The resulting data showed considerable variability in catechins content. The levels of epigallocatechin gallate (EGCG) ranged from 117 to 442mg/l, epicatechin 3-gallate (EGC) from 203 to 471mg/l, epigallocatechin (ECG) from 16.9 to 150mg/l, epicatechin (EC) from 25 to 81mg/l and catechin (C) from 9.03 to 115mg/l. Caffeine contents in the green tea infusions studied were between 141-338mg/l. Green tea infusions provide significant amounts of catechins and could be an important source of some minerals. Springer Science+Business Media, LLC, 2007 Caffeine nationallicence Catechins nationallicence Fluoride nationallicence Green tea nationallicence Minerals nationallicence Reto Márcia Faculdade de Farmácia da Universidade de Lisboa, Lisbon, Portugal aut Figueira Maria Unidade Farmacologia e Farmacotoxicologia, Faculdade de Farmácia da Universidade de Lisboa, Av. das Forças Armadas, 1600-083, Lisbon, Portugal aut Filipe Helder Unidade Farmacologia e Farmacotoxicologia, Faculdade de Farmácia da Universidade de Lisboa, Av. das Forças Armadas, 1600-083, Lisbon, Portugal aut Almeida Cristina Unidade Farmacologia e Farmacotoxicologia, Faculdade de Farmácia da Universidade de Lisboa, Av. das Forças Armadas, 1600-083, Lisbon, Portugal aut Plant Foods for Human Nutrition Springer US; http://www.springer-ny.com 62/4(2007-12-01), 139-144 0921-9668 62:4<139 2007 62 11130 https://doi.org/10.1007/s11130-007-0054-8 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s11130-007-0054-8 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Reto Márcia Faculdade de Farmácia da Universidade de Lisboa, Lisbon, Portugal aut NATIONALLICENCE 700 1- Figueira Maria Unidade Farmacologia e Farmacotoxicologia, Faculdade de Farmácia da Universidade de Lisboa, Av. das Forças Armadas, 1600-083, Lisbon, Portugal aut NATIONALLICENCE 700 1- Filipe Helder Unidade Farmacologia e Farmacotoxicologia, Faculdade de Farmácia da Universidade de Lisboa, Av. das Forças Armadas, 1600-083, Lisbon, Portugal aut NATIONALLICENCE 700 1- Almeida Cristina Unidade Farmacologia e Farmacotoxicologia, Faculdade de Farmácia da Universidade de Lisboa, Av. das Forças Armadas, 1600-083, Lisbon, Portugal aut NATIONALLICENCE 773 0- Plant Foods for Human Nutrition Springer US; http://www.springer-ny.com 62/4(2007-12-01), 139-144 0921-9668 62:4<139 2007 62 11130 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer