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. 2024 Feb 13;13(2):181. doi: 10.3390/antibiotics13020181

Table 1.

The phytochemical composition of GTEs.

Studied Components OGTE AGTE BMGTE WGTE BBGTE BkBGTE BCGTE
Phenolic acids
Caffeic acid - 0.825 ± 0.0094 - - 1.693 ± 0.0188 - 1.693 ± 0.0101
Chlorogenic acid 0.265 ± 0.0042 1.390 ± 0.0095 3.539 ± 0.0251 0.244 ± 0.0038 7.552 ± 0.0217 0.157 ± 0.0057 0.227 ± 0.0057
Ferulic acid - - - - - - 0.109 ± 0.0086
Gallic acid - - - - - 0.049 ± 0.0010 0.049 ± 0.0008
Salicylic acid 0.053 ± 0.0012 - - - 0.066 ± 0.0009 0.895 ± 0.0202 0.071 ± 0.0017
Flavonoids
Apigenin 0.055 ± 0.0021 0.017 ± 0.0009 0.103 ± 0.0025 0.002 ± 0.0001 - 0.330 ± 0.0108 0.043 ± 0.0011
Catechin - - - 0.008 ± 0.0001 0.044 ± 0.0018 - 0.028 ± 0.0009
Chrysine 0.109 ± 0.0051 0.103 ± 0.0049 0.093 ± 0.0009 - 0.117 ± 0.0085 0.101 ± 0.0022 0.114 ± 0.0027
Hyperoside 0.202 ± 0.0074 1.967 ± 0.0157 0.162 ± 0.0052 1.301 ± 0.0094 0.392 ± 0.0102 0.172 ± 0.0089 0.547 ± 0.0187
Kaempferol - 0.032 ± 0.0010 - - 0.033 ± 0.0009 - -
Luteolin 0.049 ± 0.0009 - 0.017 ± 0.0014 - - 0.013 ± 0.0008 -
Luteolin-7-O-glucoside 1.777 ± 0.0257 - 0.072 ± 0.0023 0.072 ± 0.0023 - 0.078 ± 0.0012 0.074 ± 0.0021
Naringenin 0.032 ± 0.0011 0.110 ± 0.0067 0.046 ± 0.0014 0.064 ± 0.0011 0.036 ± 0.0005 0.043 ± 0.0009 -
Quercetin 0.052 ± 0.0015 0.201 ± 0.0076 - 0.313 ± 0.0092 0.989 ± 0.0118 - 0.210 ± 0.0100
Rutoside 0.416 ± 0.0201 5.506 ± 0.0051 1.367 ± 0.0204 0.103 ± 0.0024 0.105 ± 0.0028 0.278 ± 0.0047 1.662 ± 0.0198

The concentrations are expressed in mg/mL, mean ± RSD.