Table 2.
Total phlorotannin contents and the antihyaluronidase activity of the crude extracts along with the positive controls*
| Marine algae | C (%)a | IC50 (μg/ml)b |
| Sargassum graminifolium turn | 1.71±0.16 | 133.70±5.40 |
| Sargassum thunbergii | 0.74±0.19 | 268.66±7.05 |
| Laminaria japonica | 0.97±0.19 | 147.91±2.73 |
| Sargassum cervicorne | 3.30±0.20 | 109.49±1.75 |
| Sargassum tennerimum | 5.06±0.24 | 20.97±0.16 |
| DSCG (positive control)c | − | 38.60±0.49 |
| Catechin (positive control)d | − | 19.98±0.14 |
*
All the analytical data are the means (±SD) of three determination
a
Total phlorotannin content of the residual extract on dry weight basis determined by Folin-Ceocalteu’s method;
b
IC50 was calculated using the mean of three observations from each of the five concentrations for all the samples including the positive controls DSCG and catechin;
c
The antiallergic drug used as positive control;
d
The natural polyphenol used as positive control;