Evaluation of in vitro antibacterial property of seaweeds of southeast coast of India

M, K; hasamy,; K, D Arunachalam

doi:10.5897/ajb08.120

Cited by 87 publications

(6 citation statements)

References 16 publications

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“…Regarding taxonomic groups, the present data show that species of Chlorophyta showed the highest activity against the tested fungi followed by Rhodophyta and Phaeophyta. In agreement with our results, green algae were the most active species than others [31] [37]. U. lactua (Chlorophyceae) was more active compared with J. rubens (Rhodophyceae) [33].…”

Section: Resultssupporting

confidence: 92%

Evaluation of Antimycotic Activity of Extracts of Marine Algae Collected from Red Sea Coast, Jeddah, Saudi Arabia

Sheikh¹,

El-Naggar²,

Al-Sobahi³

2018

JBM

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In the present study, fifteen species of the dominant marine algae were collected during summer 2013 from four selected sites on Red sea coast, Jeddah, Saudi Arabia. The collected species belonged to Chlorophyta, Phaeophyta and Rhodophyta. Crude algal extracts were prepared by successive extractions using different solvents (acetone, ethanol, diethyl ether, ethyl acetate, methanol and petroleum ether). The crude algal extracts were examined for their antifungal efficacy against Aspergillus flavus, Aspergillus fumigatus, Aspergillus niger, Candida albicans and Candida tropicalis using agar well diffusion method. The algal extracts evoked different patterns of antifungal activities. Results reveal that acetone was the best solvent suited for extraction of bioactive compounds from tested seaweeds with inhibition activity (19.3%) followed by ethyl acetate (17.1%), ethanol (16.4%), petroleum ether (15.9%), diethyl ether (15.85%), and finally methanol (15.4%). Chlorophyta exhibited the highest antimycotic effect followed by Rhodophyta and Phaeophyta. In Chlorophyta, the extracts of Ulva intestinalis were the most potent followed by U. lactuca, C. racemosa, U. linza and U. reticulate. Acanthophora spicifera showed the highest activity in Rhodophyta, followed by J. rubens, D. simplex, L. obtusa, G. gracilis, G. vermicuphylla and G. multipartita. Whereas, T. triquetra was the most effective species in Phaeophyta followed by P. pavonica and D. dichotoma. The minimal inhibitory concentrations (MICs) of the most potent algal extracts were in the range of 0.5 to 4 mg/ml. The results confirmed the antimycotic potentiality of seaweed extracts.

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Section: Resultssupporting

confidence: 92%

Evaluation of Antimycotic Activity of Extracts of Marine Algae Collected from Red Sea Coast, Jeddah, Saudi Arabia

Sheikh¹,

El-Naggar²,

Al-Sobahi³

2018

JBM

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“…In this study, significant levels of antimicrobial effects were observed in macroalgae extracts. Similar results were also obtained by Kandhasamy and Arunachalam (2008) and Karthikaidevi et al (2009). Previous studies reported that red, brown and green macroalga extracts showed antimicrobial properties against various microorganisms and this antimicrobial activity was found in macroalgae extracts due to the presence of bioactive compounds also known as secondary metabolites.…”

Section: Resultssupporting

confidence: 89%

Antimicrobial Activities of Some Marine Macroalgae Species from Iskenderun Bay

Sayın

2021

Turkish JAF Sci.Tech.

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In the present study, the seaweeds belong to Phaeophyaceae (Halopteris scoparia (Linnaeus) Sauvageau 1904, Cystoseria mediterranea Sauvageau 1912), Rhodophaceae (Liagora viscida (Forsskål) C.Agardh 1822, Laurencia nidifica J.Agardh 1852) and Chlorophyceae (Enteromorpha multiramosa Bliding, nom. inval. 1960) collected from nearby Iskenderun-Turkey of Mediterranean Sea were detected for their antimicrobial activities against seven bacterial (Escherichia coli ATCC 35218, Bacillus cereus NRRL B-371, Staphylococcus aureus ATCC 25923, Pseudomonas aeruginosa ATCC 27853, Klebsiella pneumoniae ATCC 13883, Salmonella typhimurium ATCC 14028, Proteus vulgaris RSKK 96029) and three fungal strains (Candida albicans ATCC 10231, C. krusei ATCC 6258, C. tropicalis Y-12968). The antimicrobial activities were expressed as minimum inhibitory concentrations (MICs), minimum bacterial concentrations (MBCs) and minimum fungicidal concentrations (MFCs) were determined. According to the results obtained from MIC values of the extracts on pathogenic microorganisms were between 50 and 50 and

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“…The influence of 50 and 100 µl tested extract on the bacterial metabolism expressed as glucose uptake is shown in Table 1. As the concentration of U. lactuca and N. sativa treated extracts increased, glucose uptake was found to be decreased with S. aureus 53.00% and 39.96%, respectively and P. aeruginosa 41.09% and 44.74%, respectively. Therefore, a decrease in glucose uptake was reflected in the less dry weight of treated bacteria with tested extracts.…”

Section: Biochemical Analysesmentioning

confidence: 96%

Effects of Biochemical and Molecular Inhibitors of Plant Extracts on Pathogenic Bacteria

Al-Zahrani¹,

Al-Judaibi²,

Omar³

et al. 2017

JBM

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The study aimed to evaluate the effect of the green alga Ulva lactuca and medicinal plant Nigella sativa extract on the activity of Staphylococcus aureus and Pseudomonas aeruginosa. The bacteria were incubated with the crude extracts and extracellular free potassium and phosphorus ions were measured in the medium. The levels of potassium and phosphorous were the maximum in the medium of S. aureus treated with N. sativa extract. The medium of P. aeruginosa incubated with U. lactuca extract was found to have the lowest phosphorous and the greatest potassium levels. The highest activity against P. aeruginosa was noticed with U. lactuca extract, where it caused reduction in the dry weight and glucose consumption of bacteria estimated by 28.41% and 41.09%, respectively. The antibacterial activity of N. sativa extract was the greatest against S. aureus and recorded 32.59% and 39.96% reduction in the bacterial dry weight and glucose uptake, respectively. Scanning Electron Microscopy study showed morphological changes in the cell wall of treated bacteria. The treatment of bacteria with the tested extract induced gene mutations. The results assessed the possible application of U. lactuca and N. sativa as a source of pharmacological benefits.

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Evaluation of in vitro antibacterial property of seaweeds of southeast coast of India

Cited by 87 publications

References 16 publications

Evaluation of Antimycotic Activity of Extracts of Marine Algae Collected from Red Sea Coast, Jeddah, Saudi Arabia

Evaluation of Antimycotic Activity of Extracts of Marine Algae Collected from Red Sea Coast, Jeddah, Saudi Arabia

Antimicrobial Activities of Some Marine Macroalgae Species from Iskenderun Bay

Effects of Biochemical and Molecular Inhibitors of Plant Extracts on Pathogenic Bacteria

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