Production and characterization of antimicrobial active substance from the cyanobacterium Nostoc muscorum

El‐Sheekh, Mostafa M.; Osman, Mohamed E.; Dyab, Mohamed A.; Amer, M. A.

doi:10.1016/j.etap.2005.06.006

Cited by 67 publications

(62 citation statements)

References 26 publications

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“…Similar to this, Kaushik & Chauhan (2008) showed the antibacterial activities of S. platensis against S. aureus and E. coli, while El-Baz et al (2013) showed the antibacterial activities of S. platensis extract against E. coli, S. aureus, S. typhi, and Enterococcus faecalis. Indeed, several compounds, including γ-linolenic acid, active fatty acid lauric and palmitoleic acid, have been attributed to the antimicrobial activities of S. platensis (El-Sheekh et al, 2014). With its prebiotic properties (Beheshtipour et al, 2013;de Jesus Raposo et al, 2016), S. platensis is known to possess a stimulating effect on the growth of LAB (Lactobacillus acidophilus, Lactobacillus casei and Streptococcus thermophilus) (Bhowmik et al, 2009).…”

Section: Discussionmentioning

confidence: 99%

Effect of feeding duration of <i>Spirulina platensis</i> on growth performance, haematological parameters, intestinal microbial population and carcass traits of broiler chicks

Sugiharto¹,

Yudiarti²,

Isroli³

et al. 2018

SA J. An. Sci.

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Spirulina platensis is a good candidate as an in-feed antibiotics substitute for broilers. However, its use seems impractical owing to its high price, especially when being administered throughout the whole rearing period. This study aimed to investigate the effects of feeding duration of S. platensis on growth, haematological parameters, intestinal microbial population, and carcass traits of broiler chicks. A total of 288 one-day-old broiler chicks were randomly allotted to one of four groups, including control (basal diet with 0.04% zinc bacitracin) (CONT) and birds receiving basal diet supplemented with 1% of S. platensis for the first seven days (SP-7), for 21 days (SP-21), and for 35 days (SP-35). In this study, treatments had no significant effect on the growth performance of broilers. The caecum relative weight was significantly higher in SP-35 than in CONT and SP-21 birds. The values of haemoglobin, erythrocytes, and haematocrit were significantly lower in SP-35 than in other birds. Compared with CONT, SP-35 birds had significantly lower numbers of leukocytes, lymphocytes, and a lower number of eosinophils. The numbers of coliform were significantly lower in the ileum of SP-21 than in CONT and SP-7 birds. In the caecum, coliform tended to be lower in SP-21 than in other birds. There was no significant difference in the carcass traits of broilers across the groups. In conclusion, the administration of S. platensis for the first 21 days of broilers' life resulted in similar or even better responses than administration of S. platensis or in-feed antibiotics throughout the rearing period. ______________________________________________________________________________________

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Section: Discussionmentioning

confidence: 99%

Effect of feeding duration of <i>Spirulina platensis</i> on growth performance, haematological parameters, intestinal microbial population and carcass traits of broiler chicks

Sugiharto¹,

Yudiarti²,

Isroli³

et al. 2018

SA J. An. Sci.

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“…In our previous study it was demonstrated that the active principal antimicrobial compound extracted from the cyanobacterium Nostoc muscorum was a phenolic compound (El-Sheekh et al, 2006). The present work is an attempt to demonstrate the antibacterial and antifungal activity of Anabaena wisconsinense and Oscillatoria curviceps.…”

Section: Introductionmentioning

confidence: 99%

“…(Borowitzka, 1988a(Borowitzka, , 1988b(Borowitzka, , 1995Volk and Furkert, 2006). There has been an increasing interest in cyanobacteria as a potential source of antifungal and antibacterial substances (Glombitza and Koch, 1989;Schwartz et al, 1990;El-Sheekh et al, 2006).…”

Section: Introductionmentioning

confidence: 99%

“…Our results confirmed that chloroform extract of O. curviceps gave the highest activity against S. parasitica Amer (2002). andEl-Sheekh et al (2006) examined the production of antibiotic substance from two species of cyanobacteria Anabaena laxa and Nostoc muscorum. They found that methanolic extract of Anabaena laxa had the highest antimicrobial activity against B. subtilis, E. coli, A. niger and Penicillium sp.…”

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confidence: 99%

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Antimicrobial activity of the cyanobacteriaAnabaena wisconsinense andOscillatoria curviceps against pathogens of fish in aquaculture

El‐Sheekh

Dawah²,

El-Rahman³

et al. 2008

Ann. Microbiol.

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Cultures of the blue green algae (cyanobacteria) Anabaena wisconsinense and Oscillatoria curviceps were isolated from fish farms and their antimicrobial effects were studied. Solvent extracts of exponential phase algae were screened for antimicrobial activity against different species of Gram positive (Lactobacillus sp. and Bacillus firmus) and Gram negative (Aeromonas hydrophila, Pseudomonas fluorescens and Pseudomonas anguilliseptica) bacteria and the fungi (Aspergillus niger and Saprolegnia parasitica) which were all isolated from diseased fish. Maximum antimicrobial activity was observed with ethanolic extract of O. curviceps against Lactobacillus sp. and Aeromonas hydrophilia, whereas, methanol extracts of A. wisconsinense and O. curviceps had antibacterial effects against B. firmus, A. hydrophila, P. fluorescens, P. anguilliseptica, and the fungi A. niger and S. parasitica. It was also observed that solvent extracts of A. wisconsinense when injected into Oreochromis niloticus which was already injected intraperitoneally with 2 x 10 6 CFU/ml P. anguilliseptica significantly decreased fish mortality from 50 to 12.5%.

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“…The nutraceutical properties of these microalgae have been attributed to their chemical composition, which is rich in proteins (60-70%) (Henrikson, 1995), polyunsaturated fatty acids (Colla et al, 2004), phenolic compounds and phycocyanin (Silva, 2008). Other properties, such as the antimicrobial action (Parisi et al, 2009;Kaushik and Chauhan, 2008;Mala et al, 2009;Kumar et al, 2011;Sarada et al, 2011;Souza et al, 2011;El-Sheekh et al, 2014) and its influence on the survival of lactic acid bacteria (Perez et al, 2007), have been reported. Among the properties of microalgae, the antioxidant action by phenolic compounds and phycocyanin has been extensively studied in vitro (Jaime et al, 2005;Souza et al, 2006;Shalaby and Shanab, 2013) and in vivo systems (Guarienti et al, 2010;Bertolin et al, 2011).…”

Section: Introductionmentioning

confidence: 99%

Thermal and photo-stability of the antioxidant potential of Spirulina platensis powder

et al. 2016

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This work aimed to evaluate the thermal and photo stability of the antioxidant potential (AP) of the Spirulina platensis biomass. Thermal stability was established at 25ºC, 40ºC and 50ºC for 60 days, in the dark, protected from light. Photo stability was evaluated using UV (15 W, λ = 265 nm) and fluorescent (20 W, 0.16 A, power factor FP > 0.5, 50/60 Hz, 60 lm/w, 1200 lm) light for 90 days in capsules, glass and Petri dishes, at room temperature. The AP of the biomass in these conditions was determined at intervals (every 7 and 30 days in the studies of thermal and photo stability, respectively) using the induction of the oxidation of a lipid system by heat and aeration. In this lipid system, the biomass submitted to degradation was used as an antioxidant. The kinetics of the reaction was determined by the Arrhenius method. Thermal degradation was found to follow zero order kinetics, whereas photo degradation followed first order kinetics. The AP decreased 50% after 50 days at 25°C. At 40°C and 50°C, the AP decreased more than 50% after 35 and 21 days of exposition, respectively. The decrease of the AP of Spirulina was more sensible to UV and fluorescence light. After 30 days of exposition, the AP decreased more than 50% in all storage conditions tested. The antioxidant potential of Spirulina platensis is easily degraded when the biomass is exposed to heat and light, indicating the need for care to be taken in its storage.Keywords: Arrhenius, stability, kinetic, degradation, cyanobacteria, microalgal biomass. Estabilidade térmica e fotoestabilidade do potencial antioxidante deSpirulina platensis em pó ResumoEste trabalho objetivou avaliar a estabilidade térmica e a foto-estabilidade do potencial antioxidante (PA) da biomassa da Spirulina platensis. A estabilidade térmica foi avaliada a 25ºC, 40ºC e 50ºC por 60 dias. A foto-estabilidade foi avaliada usando luz UV (15 W, λ = 265 nm) e fluorescente (20 W, 0.16 A, fator de potência FP > 0.5, 50/60 Hz, 60 lm/w, 1200 lm) por 90 dias em cápsulas, vidro e placas de Petri. O PA da biomassa nessas condições foi determinado em intervalos de tempo (a cada 7 e 30 dias nos estudos de estabilidade térmica e foto-estabilidade, respectivamente), usando a indução da oxidação de um sistema lipídico por calor e aeração. Neste sistema lipídico, a biomassa submetida à degradação foi usada como antioxidante. A cinética da reação foi determinada pelo método de Arrhenius. A degradação térmica seguiu uma cinética de zero ordem, enquanto que a fotodegradação seguiu uma cinética de primeira ordem. O PA diminuiu 50% depois de 50 dias a 25°C. A 40°C e 50°C, o PA diminuiu mais de 50% depois de 35 e 21 dias de exposição, respectivamente. A diminuição do PA da Spirulina foi mais sensível à luz UV e fluorescente. Depois de 30 dias de exposição, o PA diminuiu mais de 50% em todas as condições de armazenamento testadas. O potencial antioxidante da Spirulina platensis é facilmente diminuído quando a biomassa é exposta ao calor e a luz, indicando a necessidade de cuidados durante seu armazen...

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Production and characterization of antimicrobial active substance from the cyanobacterium Nostoc muscorum

Cited by 67 publications

References 26 publications

Effect of feeding duration of <i>Spirulina platensis</i> on growth performance, haematological parameters, intestinal microbial population and carcass traits of broiler chicks

Effect of feeding duration of <i>Spirulina platensis</i> on growth performance, haematological parameters, intestinal microbial population and carcass traits of broiler chicks

Antimicrobial activity of the cyanobacteriaAnabaena wisconsinense andOscillatoria curviceps against pathogens of fish in aquaculture

Thermal and photo-stability of the antioxidant potential of Spirulina platensis powder

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