An in vitro study of theaflavins extracted from black tea to neutralize bovine rotavirus and bovine coronavirus infections

Table 2

Rotavirus neutralizing activity of theaflavin extract (U.S. source)

Sample tested	EC₅₀ (μg/ml)
Crude extract	0.353
Free theaflavin (TF₁)	0.943
Theaflavin-3 monogallate (TF_2A)	251.39
Theaflavin-3′ monogallate (TF_2B)	5.07
Theaflavin-3,3′ digallate (TF₃)	5.51
Theaflavin like substances/initial peaks	0.125
TF₁+TF_2A+TF_2B+TF₃	0.404