EVALUATION DE L’EFFET DU LIEU DE RECOLTE DES ALGUES MARINES DES COTES ATLANTIQUES MAROCAINES SUR L’ACTIVITE ANTIBACTERIENNE ET ANTI-INFLAMMATOIRE

To evaluate the effect of the place of algae’s harvest on the antibacterial activity of both strains Staphylococcus aureus (ATCC 6538) and Bacillus cereus (CIP 783) and anti-inflammatory anti-phospholipase A 2, 17 species of algae were collected from two sites of the Moroccan Atlantic coast: Oualidia beach and Sidi Bouzid beach. 59% of algae harvested from Oualidia showed activity vis-à-vis S. aureus ATCC 6538, against only 41% of algae collected from Sidi Bouzid. As for strain CIP 783de B. cereus. Extracts musciformis Hypnea, Gelidium sesquipedale and Dictyota dichotoma showed activity vis-à-vis S. aureus in extracts of algae harvested from Oualidia but no activity was observed in these extracts collected from Sidi Bouzid. Moreover, the results of the anti-inflammatory activity of marine algae appear to be related to the harvest site. Indeed, Asparagopsis armata harvested from Oualidia showed inhibitory activity of phospholipase A2 to 100%, but this activity is very low (10%) for this species collected from Sidi Bouzid. The three extracts Bifurcata bifurcate, Cystoseira humilis and Cystoseira tamariscifolia, picked up from Oualidia, showed inhibitory activity of phospholipase A2 greater than that collected from Sidi Bouzid. Analysis of variance(ANOVA) of the anti-inflammatory and antibacterial activity showed that there is a significant difference in activity between the two stations of harvest.