Variation of photosynthetic pigments and biochemical screening in some seaweeds from Eastern Harbor, Alexandria, Egypt

The current study examined the biochemical composition of four seaweeds (Ulva fasciata, Ulva compressa, Corallina officinalis, and elongate) which were collected from Eastern Harbor located at Alexandria Mediterranean coast, Egypt. Total chlorophyll content was maximum in compressa (2.7 mg g–1 FW) minimum value observed elongate (0.90 FW). In comparison, carotenoids registered officinalis (1.04 followed by (0.86 lowest ratio recorded fasciata (0.45 results showed that green seaweed compressa) contained highest amounts phenols (12.7 mgGA/g dry wt.), flavonoid (9.42 mgCA/g wt.) has percentage DPPH radical scavenging capacity, antioxidant capacity (TAC) assay, Reducing Capacity (TRC)  (80.45, 12.5 71.6 respectively). On other hand, red (Corallina (5.9 (8.29 DPPH, TAC, TRC (70.3, 8.4, 57.8 Due to seaweed's composition, these findings recommend being used as an agent for food supplements, cosmetics, medicinal applications, pharmaceutical industries.