![]() ![]() Carotenoid compounds significantly varied among the two bacterial extracts the highest total carotenoid concentration was observed in the extract HA-MS-41 (1.165μg/ml). Whereas, much lower value was shown in the HA-MS-118 extract (2.5☐.26 mg catechin equivalent / ml). The highest level of total flavonoid content was measured in the extract HA-MS-41 extract (5☐.23 mg catechin equivalent / ml). The results of the current study cleared out that extract HA-MS-41 contained gallic and tannic acids (1.084 and 1.413 mg/ml), whereas extract HA-MS-118 contained gallic (1.005 mg/ml) but didn’t contain tannic acid. Whereas, the lowest value was shown in extract HA-MS-118 (2.946☐.10 mg gallic equivalent/ml). The highest level of total phenolic contents was measured in the extract was shown in extracts HA-MS-41 (3.238☐.03 mg gallic equivalent/ml). The results of HPLC analysis revealed that the bacterial crude extracts exhibited highly significant quantities of total phenolic contents in crude extracts of the two tested bacterial isolates. Moreover, taxonomic and phylogenetic analyses of the bacteria on the basis of 16S rRNA gene sequences showed that dominant phylum was proteobacteria. Sponge was taxonomically identified as Ircinia echinata. This work investigated the antioxidant and cytotoxicity properties of the tested extracted crude extract. The present study was undertaken to provide information about bioactive compounds of the microbial community associated with Ircinia echinata marine sponge collected from the Red Sea. ![]()
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