Ecological and Phytochemical Studies on Brown Algae Sargassum muticum from Marsa Alam at Red Sea Coast, Egypt

Abstract

The present investigation revealed that Red sea stretches along Marsa Alam of Egypt is a habitation of diverse groups of marine macro-algal species recorded along Marsa Hemera shore. Ecological studies (meteorological data, water, soil, aqueous extract analysis of Sargassum muticum (Yendo) Fensholt and associated species) reported that, slightly alkaline; low turbidity, moderate temperature and available nutrient content of saline water produced massive growth of S. muticum during September (2018). Ecological and Physico-chemical properties of collected water samples showed variations of different parameters of sea water like temperature, salinity, pH, and high dissolved minerals. Heavy metals accumulation inside the investigated seaweeds S. muticum was within the corresponding range. The aqueous extract of S. muticum contained high amounts of Na, Ca, K and Fe, moderate amounts of Zn, and low in Cu, Cd, Ni and Mn. Lead Pb recorded 0.291 ppm, Ag, Co and Ga were absent in aqueous extract. The associated species to the brown algae S. muticum are belonging to 6 families and 7 species as follows: Sargassaceae, Fucaceae, Phaeophyceae, Rhodomelaceae, Caulerpaceae and Hydrocharitaceae. Results showed that S. muticum enriched in essential amino acids; micro and macro elements, carbohydrates, protein, lipids, and agar. These algae may be used as bio fertilizers.

Sargassum Inundations in Turks and Caicos: Methane Potential and Proximate, Ultimate, Lipid, Amino Acid, Metal and Metalloid Analyses

“…The levels of both phosphorus and potassium in the 'Mixed Sargassum' were above the maximum levels found by Rodríguez-Martínez et al [43]. The levels of cadmium, chromium, copper, lead and manganese in the current study were similar to those found in S. muticum [86]. Chen et al [84] in a study of 295 brown and red seaweed samples found that elements in seaweeds can be listed in descending order of mean concentration: Al > Mn > As > Cu > Cr > Cd > Pb > Hg, but this study found a slightly different order of As > Al > Mn > Cu > Pb > Cr > Cd > Hg with both arsenic and lead being higher in the relative order.…”

Evaluation of the brown alga, Sargassum muticum extract as an antimicrobial and feeding additives

“…Sargassum muticum was collected from Marsa Alam, Red Sea, Egypt, and immediately transported in plastic bags containing seawater to the laboratory to stop the degradation of the alga. The identified alga by Jha et al (2009) and Azzazy et al (2019) (Figure 1), were extensively washed with sterilized seawater to remove foreign materials. The specimen was dried in the shade until constant weight and was blended into a powder.…”

Seasonal Changes in the Biochemical Composition of Dominant Macroalgal Species along the Egyptian Red Sea Shore

“…Macroalgae are known to be a wealthy source of dietary fiber, essential amino acids, nutrients, vitamins, antioxidants and lipids [ 3 , 17 ]. Thus, they are valuable natural sources for fertilizers and plant growth regulators, food commodities, animal feeds and perform a crucial role in agriculture and horticulture [ 18 , 19 ]. Recently, seaweeds have also been used for a variety of purposes, including health benefits, biofuel production, cosmetics, pharmaceuticals, textiles and bioplastic packaging [ 20 , 21 ].…”