Skip to main content

Table 1 Phenolic content and in vitro antioxidant capacity of aqueous rooibos extract

From: Amelioration of lipopolysaccharide-induced liver injury by aqueous rooibos (Aspalathus linearis) extract via inhibition of pro-inflammatory cytokines and oxidative stress

Aqueous rooibos extract  
Constituents Concentration
Soluble solids (mg/mL) 2.85 ± 0.39
Total polyphenol (mg GAE/mL) 1.06 ± 0.02
Flavonol (mg QE/ mL) 0.48 ± 0.01
Flavanol (mg CE/mL) 0.19 ± 0.01
Aspalathin (μg/mL) 29.98 ± 0.08
Orientin (μg/mL) 18.61 ± 0.13
Iso-orientin (μg/mL) 25.98 ± 0.52
Vitexin (μg/mL) 6.07 ± 1.05
Iso-vitexin (μg/mL) 7.18 ± 0.20
Hyperoside/rutin (μg/mL) 14.55 ± 2.26
Quercetin (μg/mL) 0.89 ± 0.18
Luteolin (μg/mL) 0.22 ± 0.06
Chrysoeriol (μg/mL) 0.25 ± 0.01
ORAC (μmol AAE/mL) 1.69 ± 0.03
FRAP (μmol TE/mL) 5.20 ± 0.04
TEAC (μmol TE/mL) 4.79 ± 0.33
  1. Values are mean ± SD. Soluble solid is a mean of 12 determinations while other parameters are mean of 5 determinations. AAE (ascorbic acid equivalent), CE (catechin equivalent), GAE (gallic acid equivalent), QE (quercetin equivalent), TE (trolox equivalent).