Table 3.
Total phenols, antioxidant contents, ABTS, ORAC, SOD and RBC assays (mean ± SD; range) of honeydew (n = 16) and floral (n = 15) honeys and their methanolic extracts
| Assay | Honeydew honey |
Floral honey |
Honeydew honey extracts |
Floral honey extracts |
|---|---|---|---|---|
| Total phenols (mg GAE/100 g honey) |
100.11 ± 21.72a
(69.53–130.30) |
57.33 ± 10.10bd
(33.93–71.80) |
92.13 ± 19.60a
(67.12–119.18) |
52.31 ± 9.23cd
(31.93–66.63) |
| Antioxidant content (mg AEAC/100 g honey) |
55.59 ± 6.78a
(46.13–66.62) |
34.05 ± 14.24bd
(8.28–50.78) |
45.74 ± 6.15c
(37.44–55.88) |
27.44 ± 11.53d
(6.69–40.56) |
| TEAC/ABTS (µM TE/100 g honey) |
0.35 ± 0.04a
(0.27–0.40) |
0.22 ± 0.10bc
(0.05–0.37) |
0.26 ± 0.03c
(0.17–0.30) |
0.17 ± 0.07bd
(0.04–0.28) |
| ORAC (µM TE/g honey) |
0.30 ± 0.05a
(0.21–0.39) |
0.23 ± 0.10bc
(0.07–0.41) |
0.20 ± 0.03cd
(0.15–0.28) |
0.14 ± 0.07d
(0.04–0.24) |
| SOD (% inhibition) |
54.78 ± 7.86a
(46.39–69.69) |
34.36 ± 14.02bc
(9.27–54.44) |
42.50 ± 6.98c
(30.56–55.31) |
27.93 ± 11.77bd
(7.25–48.40) |
| RBC protection against hemolysis (mM TE/100 g honey) |
0.33 ± 0.14a
(0.11–0.51) |
0.21 ± 0.12bc
(0.06–0.42) |
0.26 ± 0.13abc
(0.07–0.45) |
0.17 ± 0.10c
(0.04–0.36) |
GAE gallic acid equivalents, AEAC ascorbic acid equivalent antioxidant capacity; TEAC/ABTS trolox equivalents antioxidant capacity/2,2′-azinobis (3-ethylbenzothiazoline-6-sulfonic acid, TE trolox equivalents, ORAC oxygen radical absorbance capacity, SOD superoxide dismutase, RBC red blood cells. Averages of triplicate determinations
a, b, c, dEntries with different superscripts are different (P < 0.05) by the least significant difference test