and catechin gallate are superior to epigallocatechin gallate in growth suppression and anti-inflammatory activities in pancreatic tumor cells.
The total ester-type catechins (TETC) is the total amount of ester-type catechins, including EGCG, epicatechin gallate
(ECG), catechin gallate (CG), and gallocatechin gallate (GCG).
Tea samples used in this study were analyzed by high-performance liquid chromatography (HPLC) to analyze the presence of epicatechin (EC), epigallocatechin (EGC), epigalocatechin gallate (EGCG), and epicatechin gallate
(ECG)  (Table 1).
Thus, in this extract the following phenolic compounds were identified, in mg 100 [g.sup.-1] extract, in order of increasing concentration: quercetin (0.47 [+ or -] 0.02), p-coumaric acid (3.86 [+ or -] 0.21), acid gallic (5.31 [+ or -] 0.36), epicatechin gallate
(14.60 [+ or -] 1.43), catechin (18.13 [+ or -] 0.53), syringic acid (59.46 [+ or -] 0.18) and epicatechin (146.97 [+ or -] 2.39) (Figure 1).
Catechin are monomers of flavonols with a variety of similar compounds comprising catechin, epigallocatechin, epicatechin gallate
(EGC) and EGCG; among the compounds, EGCG is the major component of polyphenols in green tea [36,66,67] exerting numerous biological effects that are pertinent to human medicine including an antioxidant attributed with possessing high reductive powers capable of quenching singlet molecular oxygen and peroxyl radicals.
The use of reversed phase high performance liquid chromatography allowed the identification of 7 phenolic constituents; there were gallic acid, protocatechin acid, catechin, dimer gallic acid ester and epicatechin, trimer gallic acid ester, and epicatechin gallate
Burt, "The inhibition of collagenase induced degradation of collagen by the galloyl-containing polyphenols tannic acid, epigallocatechin gallate and epicatechin gallate
," Journal of Materials Science: Materials in Medicine, vol.
Analysis of the phenolic constituents of shea kernels has demonstrated the presence of quercetin, trans-cinnamic acid, and eight catechins (gallic acid, catechin, epicatechin, epicatechin gallate
, gallocatechin, epigallocatechin, gallocatechin gallate, and epigallocatechin gallate), many of which are also found in green tea.
(27,28) Among them, the main ones are: epicatechin (EC), epicatechin gallate
(ECG), epigallocatechin (EGC) and epigallocatechin gallate (EGCG), the latter being the most abundant in green tea and which attracts more interests.
Green tea contains several active polyphenols such as epigallocatechin-3-gallate (EGCG), epigallocatechin (EGC), epicatechin (EC), and epicatechin gallate
, with EGCG being the most abundant and possessing the most potent antioxidative activity.
The present study was designed to evaluate the antiviral efficiency of green tea extract (GTE) epigallocatechin gallate (EGCG) epicatechin gallate
(ECG) and epigallocatechin (EGC) in-vitro through cell culture and in vivo in broiler chickens against the challenge of fowl adenovirus type 4 (FAdV-4).
Primary disease-fighting compounds in dark chocolate and green tea: cocoa polyphenol flavonoids, especially the flavanois: catechins, epicatechins, and procyanidins * green tea polyphenol flavonoids, especially the flavanok epigallocatethin gallate (EG(G), epigallocatechin, epicatechin gallate
, and epicatechin