Tea is the most widely consumed bev

Tea is the most widely consumed beverage in the world which ranks after water (Wang et al., 2013) and is especially popular in Asian countries (Lee et al., 2006). The chemical composition of tea is complex and includes polyphenols, alkaloids (caffeine, the-ophylline and theobromine), amino acids, carbohydrates, proteins, chlorophyll, volatile compounds, minerals, trace elements and other unidentified compounds (Karori, Wachira, Wanyoko, & Ngure, 2007). Among these compositions, polyphenols constitute the most interesting group and are the main bioactive molecules found in tea (Cabrera, Giménez, & López, 2003). The major polyphenolic compounds in tea are flavan-3-ols (i.e. catechins)which include: (+)-catechin (C), (À)-epicatechin (EC), (À)-epigallo-catechin (EGC), (À)-epigallocatechin gallate (EGCG), (À)-gallocate-chins (GC), (À)-epicatechin gallate (ECG), and (À)-gallocatechingallate (GCG) (Kerio, Wachira, Wanyoko, & Rotich, 2013). The tea beverage has been continuously considered as a medicine since the ancient times because of its polyphenols. Numerous studies have recorded the beneficial effects of tea, which include anti-oxidant (Vinson & Dabbagh, 1998), anti-carcinoma (Sadzuka, Sugiyama, & Sonobe, 2000), anti-inflammation (Karori, Ngure, Wachira, Wanyoko, & Mwangi, 2008), and antimicrobial properties (Vaquero, Alberto, & Maca de Nandra, 2007). Therefore, tea appears to be an effective chemopreventive agent for toxic chemicals and carcinogens.

Hasil (Bahasa Indonesia) 2:

Teh adalah minuman yang paling banyak dikonsumsi di dunia yang menempati peringkat setelah air (Wang et al., 2013) dan sangat populer di negara-negara Asia (Lee et al., 2006). Komposisi kimia dari teh adalah kompleks dan termasuk polifenol, alkaloid (kafein, yang-ophylline dan theobromine), asam amino, karbohidrat, protein, klorofil, senyawa volatil, mineral, trace elemen dan senyawa tak dikenal fi kasi lainnya (Karori, Wachira, Wanyoko, & Ngure, 2007). Diantara komposisi ini, polifenol merupakan kelompok yang paling menarik dan molekul bioaktif utama yang ditemukan dalam teh (Cabrera, Gimenez, & López, 2003). Senyawa polifenol utama dalam teh fl avan-3-ols (yaitu katekin) yang meliputi: (+) - katekin (C), (À) -epicatechin (EC), (À) -epigallo-catechin (EGC), (À ) gallate -epigallocatechin (EGCG), (À) -gallocate-dagu (GC), (À) gallate -epicatechin (EKG), dan (À) -gallocatechingallate (GCG) (Kerio, Wachira, Wanyoko, & Rotich, 2013) . Minuman teh telah terus dianggap sebagai obat sejak zaman kuno karena polifenol nya. Sejumlah penelitian telah mencatat manfaat efek resmi teh, yang meliputi anti-oksidan (Vinson & Dabbagh, 1998), anti-kanker (Sadzuka, Sugiyama, & Sonobe, 2000), anti-peradangan (Karori, Ngure, Wachira, Wanyoko, & Mwangi, 2008), dan antimikroba properti (Vaquero, Alberto, & Maca de Nandra, 2007). Oleh karena itu, teh tampaknya menjadi agen kemopreventif yang efektif untuk bahan kimia beracun dan karsinogen.