Antioxidant Activity and Chemical Composition of Colombian Propolis - Natural Antioxidants and Biocides from Wild Medicinal Plants - page 108

Table 7.6. Total phenolic content, total flavonoid content and antioxidant activity of ethanol extracts obtained from propolis collected in different municipalities
belonging to the Atlántico Department of Colombia.

Specific absorb-
ance of UV
spectrum

FRAP
AEAC d ± SD
( m mol/g)

ORAC
( m mol TROLOX/ g
of propolis)

Total phenolic
content a

Total flavonoid
content b

DPPH
TEAC c ± SD ( m mol/g)

ABTS
TEAC c ± SD ( m mol/g) Sample

E 1%
1

( l )

cm

Galapa 73.54 (290) 81.22 ± 10.01 3.36 ± 0.82 190.41 ± 6.90 1918.41 ± 44.45 321.27 ± 55.6 1964.80

Sabanalarga 29.04 (274.5) 63.72 ± 16.06 2.32 ± 0.04 65.14 ± 2.13 739.74 ± 14.51 112.05 ± 11.5 475.02

Santo Tomás 79.32 (291.5) 86.63 ± 4.38 5.16 ± 0.21 134.18 ± 3.54 1322.57 ± 4.66 262.65 ± 24.5 2211.94

Juan de Acosta 26.54 (283.5) 94.55 ± 21.06 1.90 ± 0.12 103.79 ± 2.48 1061.07 ± 19.55 191.12 ± 31.5 709.46

BHT (standard) - - - 517.4 ± 0.1 884.9 ± 0.1 500.6 ± 5.5 -

a mg of gallic acid/g of sample (mg GAE/g EEP). b mg of quercetin/g of sample (mg QE/g EEP). Values are expressed as mean ± standard error of the mean (SEM) (n=3). c Antioxidant
capacity in trolox equivalents (TE). d Antioxidant capacity in ascorbic acid equivalents. Values are expressed as mean ± standard error of the mean (SEM) (n=3).