Preliminary Screening of Seaweeds, Seagrass and Lemongrass Oil from Papua New Guinea for Antimicrobial and Antifungal Activity

Evaluation of Antioxidant and Antibacterial properties of Halophila stipulacea Leaves Extracts obtained from (Alwajh) North of Yanbu City

“…Among them, ethanol extract was the more effective against P. aeruginosa than other extracts; this showed that ethanol is suitable for extracting active compounds from seagrass. These findings were supported by the earlier studies which suggested that the methanolic extract of Enhalus acoroides produced a stronger effect against P. aeruginosa, K. pneumoniaeand S. aureus when compared to the hexane extract (Alam et al, 1994). This study demonstrated that the best antimicrobial activity was in the ethanoic extract, which concurred with other earlier reports (Umamaheshwari et al, 2009) and the ethanolic and methanolic extractions of the seagrasses Halophila ovalis and Halodule pinafolia were preferable than the other tested extracts because their better inhibition zones against tested bacteria (Mani et al, 2012).…”

Antibacterial Activities of Selected Seaweed and Seagrass from Port Dickson Coastal Water against different Aquaculture Pathogens

“…The results were in accordance with the report by Premanathan et al (2000) where Thalassia hemprichii showed antibacterial activity against four pathogens (Bacillus subtilis, Staphylococus aureus, Agrobacterium tumefaciens and Escherichia coli) were tested. Meanwhile, methanolic extract of Enhalus acoroides has been shown by Alam et al (1994) Table 3. Methanolic extracts of Padina minor exhibited the lowest MBC against V. harveyi BB120 at 1.56 mg/mL, while Thalassia hemprichii exhibited the lowest MBC against V. harveyi ATCC 14126 at 3.13 mg/mL.…”

Studies on the bioactivity and elementology of marine algae from the coast of Karachi, Pakistan

“…aureus Hucker (Anonymous, 2000). The ethanolic extracts derived from seven seaweed species showed no detectable antifungal activity against Epidermophyton floccosum (Harz) Langeron et Milochevitch, Microsporum canis Bodin and Trichophyton rubrum (Castellani) Sabouraud (Alam et al, 1994). It appears that different seaweeds behave variably against a variety of fungal species.…”

“…In recent years, a number of marine plants' extracts have exhibited a variety of antimicrobial activities (Baslow, 1969;Naqvi et al, 1980;Rao et al, 1991;Alam et al, 1994). The extracts of Codium dwarkense Børg.…”