Impact of The Microbial Suppression by Using The Brown Alga Dictyota dichotoma Extract

Abstract

I N THIS CONTEXT the brown alga Dictyota dichotoma isolated from Hurghada SeaShore , Red-Sea coast, Egypt (June 2015) was screened for its antimicrobial bioactivity. A laboratory experiment was conducted to test activity of ethanol extract of the brown alga Dictyota dichotoma against three types of Gram-positive and six of Gram-negative bacteria, and one type of fungi. Ethanol extract was selected for this study by using different concentrations (100, 200, 300, 400 mg) of alga extracts. Result revealed that the alga ethanolic extract exhibited high suppression activity against all tested pathogens. HPLC analysis of the chemical composition of algal extract was detect the presence of high amount of certain ingredients such as Flavonoids

Antifungal Potential of the Bioactive Constituents in Extracts of the Mostly Untapped Brown Seaweed Hormophysa cuneiformis from The Egyptian Coastal Waters

“…Seaweeds in general have biologically active compounds which are very effective in inhibiting the growth of many pathogenic microorganisms including fungi (e.g., Shobier et al, 2016;Ibraheem et al, 2017;Zerrifi et al, 2018). In this study, the antifungal activity of the brown seaweed H. cuneiformis was evaluated against eight pathogenic human and plant fungal isolates.…”

“…In Egypt, seaweeds are widely distributed along coasts of the Mediterranean (e.g., Shabaka, 2018) and Red Seas (e.g., El-Sharouny et al 2001). They are rich resources of bioactive compounds with high possibility for use in promising development of recent pharmaceutical agents (Abdel-Raouf et al, 2008;Ibraheem et al, 2017). Previous studies on antimicrobial (mainly antibacterial with little antifungal) characterizations of the Egyptian seaweeds have been primarily focused on the most cosmopolitan and well identified species, e.g.…”

“…Previous studies on antimicrobial (mainly antibacterial with little antifungal) characterizations of the Egyptian seaweeds have been primarily focused on the most cosmopolitan and well identified species, e.g. Cystoseira compressa, C. myrica, Dictyota dichotoma, Hydroclathrus clathratus, Padina pavonica, Sargassum hornschuchii, S. latifolium, S. ramifolium, S. vulgare and Turbinaria ornata as members of brown macroalgae, Acanthophora spicifera, Corallina officinalis, Galaxaura elongata, Jania rubens, Liagora farinosa, Pterocladia capillacea, and Sarcodiotheca furcata species of Rhodophyta, and Caulerpa racemosa, Codium tomentosum, Ulva fasciata and U. lactuca belonging to Chlorophyta (e.g., Ibraheem et al, 2012;El-Sheekh et al, 2014;Fathy et al, 2017;Ibraheem et al, 2017).…”

Influence of laboratory conditions on two species Dictyotaceae family (Phaeophyceae): Diterpenoid profile and physiological response

“…There is particular interest in several species of this family, being notable Dictyota menstrualis and Canistrocarpus cerviconis. Extracts of these algae, which are typically found in shallow waters and intertidal communities in subtropical and tropical areas (Sadeghi et al, 2019), exhibit a remarkably wide range of properties (Chen et al, 2018;Bogaert et al, 2020), effects of the following types: antiviral (Pereira et al, 2004;Abrantes et al, 2010;Vallim et al, 2010;Cavalcanti et al, 2011;de Souza Barros et al, 2016;Cirne-Santos et al, 2019;Cirne-Santos et al, 2020a;Cirne-Santos et al, 2020b;Ribeiro et al, 2021), cytotoxic (Jongaramruong and Kongkam, 2007;Caamal-Fuentes et al, 2014), antibacterial (Viano et al, 2009;Ibraheem et al, 2017;de Figueiredo et al, 2019;Rubiano-Buitrago et al, 2019), antitumoral (Gomes et al, 2015), anti-snake venom effect (Domingos et al, 2011), anti-inflammatory (Albuquerque et al, 2013;do Nascimento A ́vila et al, 2019), anticoagulant (Albuquerque et al, 2004;Camara et al, 2011;de Andrade Moura et al, 2011), antioxidant (Rodrigues et al, 2020), and antileishmanial (Dos . Thus, D. menstrualis and C. cervicornis were selected as the target of the present study because they are species with widely demonstrated different bioactivities and pharmacological potential.…”

Hydroclathrus clathratus as anti-damaging agent against lung injury in male albino rats

“…Today, in addition to the conventional wisdom, it is known undoubtedly that many of the resulting compounds of algae from secondary metabolism act as stimulators of the primary metabolism of the person who ingests it, stimulating the activity of certain endocrine glands, blood circulation, exchanges of mineral elements, and the physiological elimination of toxins. Due to recent studies in this area of knowledge, several of these compounds were characterized, and their respective pharmacological properties were determined-cholesterol reducers, anticoagulants (important in the prevention of stroke), antimicrobials, antitumor, antiviral, anthelmintics, anti-inflammatory, antacids, growth regulators, immunoregulatory, etc [16][17][18].…”