scholarly journals Antimicrofouling activities of marine macroalga Dictyota dichotoma from the Red Sea

2019 ◽  
Vol 23 (1) ◽  
pp. 58
Author(s):  
Alaa Aref Gadhi ◽  
Mohsen M. El-Sherbiny ◽  
Abdul Mohsin Al-Sofynai ◽  
Mohammad Abdulaziz Ba-Akdah ◽  
Sathianeson Satheesh
Keyword(s):  
Red Sea ◽  
Bacterial Strain ◽  
Extraction Methods ◽  
Marine Macroalgae ◽  
Dictyota Dichotoma ◽  
Growth Inhibitory ◽  
Microtitre Plate Assay ◽  
Defence Strategies ◽  
Marine Macroalga ◽  
Total Extraction

Introduction. Marine organisms produce a variety  of secondary metabolites mainly for achieving the defence against the competitors and predators. These compounds could be used as natural product antifoulants for the management of biofouling growth on marine structures. Objectives. To understand the antifouling defence strategies of marine macroalgae collected from the Red Sea. Methodology. The macroalga Dictyota dichotoma was collected from the Obhur Creek of Red Sea, Saudi Arabia and extracted using methanol. Surface and total extraction methods were performed and tested against a bacterial strain isolated from the microfouling assemblage. Results. The extracts obtained from the macroalgal samples have strong antibacterial and antibiofilm activities against the bacterial strain isolated from the marine microfouling assemblage. The total extracts showed strong bacterial growth inhibitory activities in culture plate method. In microtitre plate assay, surface extract showed strong biofilm inhibitory activity. GC-MS analysis indicated considerable variations in the metabolic profile of the surface and total extracts. Conclusion. This study revealed the importance of surface-associated compounds in antifouling defence mechanism of the marine macroalgae.

scholarly journals Antimicrofouling activities of marine macroalga Dictyota dichotoma from the Red Sea

2019 ◽  
Vol 23 ◽  
pp. 58
Author(s):  
Alaa Aref Gadhi ◽  
Mohsen M. El-Sherbiny ◽  
Abdul Mohsin Al-Sofynai ◽  
Mohammad Abdulaziz Ba-Akdah ◽  
Sathianeson Satheesh
Keyword(s):  
Red Sea ◽  
Bacterial Strain ◽  
Extraction Methods ◽  
Marine Macroalgae ◽  
Dictyota Dichotoma ◽  
Growth Inhibitory ◽  
Microtitre Plate Assay ◽  
Defence Strategies ◽  
Marine Macroalga ◽  
Total Extraction

Introduction. Marine organisms produce a variety  of secondary metabolites mainly for achieving the defence against the competitors and predators. These compounds could be used as natural product antifoulants for the management of biofouling growth on marine structures. Objectives. To understand the antifouling defence strategies of marine macroalgae collected from the Red Sea. Methodology. The macroalga Dictyota dichotoma was collected from the Obhur Creek of Red Sea, Saudi Arabia and extracted using methanol. Surface and total extraction methods were performed and tested against a bacterial strain isolated from the microfouling assemblage. Results. The extracts obtained from the macroalgal samples have strong antibacterial and antibiofilm activities against the bacterial strain isolated from the marine microfouling assemblage. The total extracts showed strong bacterial growth inhibitory activities in culture plate method. In microtitre plate assay, surface extract showed strong biofilm inhibitory activity. GC-MS analysis indicated considerable variations in the metabolic profile of the surface and total extracts. Conclusion. This study revealed the importance of surface-associated compounds in antifouling defence mechanism of the marine macroalgae.

scholarly journals Temporal variation in chemical composition of Dictyota dichotoma (Hudson) J.V. Lamouroux (Dictyotales, Phaeophyceae) from Red Sea Coast, Egypt

2017 ◽  
Vol 5 (4) ◽  
pp. 149-155 ◽  
Author(s):  
Mohamed Ali Deyab ◽  
◽  
Taha Mohamed El-Katony ◽  
Magda Faiz El-Adl ◽  
Fatma Mohamed Ward ◽  
...  
Keyword(s):  
Chemical Composition ◽  
Temporal Variation ◽  
Red Sea ◽  
Dictyota Dichotoma ◽  
Red Sea Coast ◽  
Sea Coast

scholarly journals Characterization of Fatty Acids, Polysaccharides, Amino Acids, and Minerals in Marine Macroalga Chaetomorpha crassa and Evaluation of Their Potentials in Skin Cosmetics

Molecules ◽  
2021 ◽  
Vol 26 (24) ◽  
pp. 7515
Author(s):  
Haresh S. Kalasariya ◽  
Nikunj B. Patel ◽  
Akanksha Yadav ◽  
Kahkashan Perveen ◽  
Virendra Kumar Yadav ◽  
...  
Keyword(s):  
Amino Acids ◽  
Marine Macroalgae ◽  
Bioactive Components ◽  
Bioactive Constituents ◽  
Methanolic Extracts ◽  
Health Promoting ◽  
Potential Benefits ◽  
Beauty Care ◽  
Marine Macroalga

Cosmetic industries are highly committed to finding natural sources of functional active constituents preferable to safer materials to meet consumers’ demands. Marine macroalgae have diversified bioactive constituents and possess potential benefits in beauty care products. Hence, the present study was carried out to characterize the biochemical profile of marine macroalga Chaetomorpha crassa by using different techniques for revealing its cosmetic potentials. In results, the FTIR study characterized the presence of different bioactive functional groups that are responsible for many skin-beneficial compounds whereas six and fifteen different important phycocompounds were found in GCMS analysis of ethanolic and methanolic extracts, respectively. In the saccharide profile of C. crassa, a total of eight different carbohydrate derivatives were determined by the HRLCMS Q-TOF technique, which showed wide varieties of cosmetic interest. In ICP AES analysis, Si was found to be highest whereas Cu was found to be lowest among other elements. A total of twenty-one amino acids were measured by the HRLCMS-QTOF technique, which revealed the highest amount of the amino acid, Aspartic acid (1207.45 nmol/mL) and tyrosine (106.77 nmol/mL) was found to be the lowest in amount among other amino acids. Their cosmetic potentials have been studied based on previous research studies. The incorporation of seaweed-based bioactive components in cosmetics has been extensively growing due to its skin health-promoting effects.

Cytotoxic Hydroazulene Diterpenes from the Brown Alga Dictyota dichotoma

2003 ◽  
Vol 58 (1-2) ◽  
pp. 17-22 ◽  
Author(s):  
Sahar R. Gedara ◽  
Osama B. Abdel-Halim ◽  
Saleh H. El-Sharkawy ◽  
Osama M. Salama ◽  
Thomas W. Shier ◽  
...  
Keyword(s):  
Petroleum Ether ◽  
Cytotoxic Activity ◽  
Red Sea ◽  
Brown Alga ◽  
Alcoholic Extract ◽  
Dictyota Dichotoma ◽  
Ether Fraction ◽  
Steroidal Compound ◽  
Chemical Correlation ◽  
Physical And Chemical

Two new hydroazulenoid (prenyl guaiane) diterpenes, dictyone acetate (2) and 3,4-epoxy 13-hydroxy pachydictyol A (4) were isolated from the petroleum ether fraction of the alcoholic extract of the brown alga, Dictyota dichotoma (Hudson) Lamouroux, which was collected from the Red Sea coasts at Hurgada, Egypt, together with three known ones, pachydictyol A (1), dictyone (3) and 11-hydroxypachydictyol A (dictyol E) (5). In addition, the steroidal compound, stigmasta-5,(E)-24(28)-dien-3-β-ol (fucosterol) (6) was also isolated. The structures of the isolated compounds have been determined on the basis of spectroscopic evidences as well as physical and chemical correlation with known compounds. Compounds 1, 2, 3 and 5 showed moderate cytotoxic activity

scholarly journals SOSIALISASI POTENSI LOKAL ACEH BARAT MELALUI PEMANFAATAN ALGA COKELAT (Sargassum sp) KEPADA MASYARAKAT PESISIR DI PANTAI LHOK BUBON ACEH BARAT

2020 ◽  
Vol 3 (2) ◽  
Author(s):  
Mohamad Gazali ◽  
Zuriat Zuriat
Keyword(s):  
Coastal Area ◽  
Brown Algae ◽  
Brown Alga ◽  
Local Community ◽  
Value Added ◽  
Marine Macroalgae ◽  
Marine Biodiversity ◽  
Community Group ◽  
Coastal Community ◽  
Marine Macroalga

Indonesia is the biggest archipelago state that have high marine biodiversity. One of the marine biodiversity that have bright prospect in the future are marine macroalgae. Marine macroalgae have distributed widely in the coastal area of Indonesia especially West South Aceh. Marine macroalga have distributed in the West South Aceh. Marine macroalgae are consist of three classes namely Rhodophyta, Phaeophyta dan Chlorophyta classes. One of the marine macroalgae that have important economical value is brown algae (Sargassum sp). However, the utilization of brown algae (Sargassum sp) has not yet optimal. It is caused by lack of knowledge and skill related marine macroalgae processing. Therefore, the researcher has conducted the activity of empowering community at Lhok Bubon Coastal area. The conducting method of the activity of empowering community including survey of brown alga’s site, the socialization of brown alga utilization and forming the coastal community group. The result that reached in conducting empowering community was the enhanching of knowledge and skill of coastal community. The conducting of empowering community were acknowledged by coastal community of Lhok Bubon. Their hope are how to process the brown alga in order to give value added for local community prosperity.

scholarly journals Bioactive Potential of Marine Macroalgae from the Central Red Sea (Saudi Arabia) Assessed by High-Throughput Imaging-Based Phenotypic Profiling

Marine Drugs ◽  
2017 ◽  
Vol 15 (3) ◽  
pp. 80 ◽  
Author(s):  
Stephan Kremb ◽  
Constanze Müller ◽  
Philippe Schmitt-Kopplin ◽  
Christian Voolstra
Keyword(s):  
Saudi Arabia ◽  
Red Sea ◽  
High Throughput ◽  
Marine Macroalgae ◽  
Bioactive Potential ◽  
High Throughput Imaging
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