Antifungal activity of carrageenan extracts from the red alga Chondracanthus teedei var. lusitanicus

Soares, Fabiana; Fernandes, Chantal; Silva, Paulo; Pereira, Leonel; Gonçalves, Teresa

doi:10.1007/s10811-016-0849-9

Cited by 35 publications

(26 citation statements)

References 43 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…For FTIR-ATR analysis (Fourier transform infrared spectroscopy, attenuated total reflectance), we used the dried biomass of the whole alga that was separated by the two phases (tetrasporophyte and fructified gametophyte) and those samples were milled using a commercial mill (Taurus aromatic, Spain) to obtain a fine powder, which was subjected to direct analysis [30][31][32].…”

Section: Collection and Treatment Of Samplesmentioning

confidence: 99%

Extraction and Analysis of Compounds with Antibacterial Potential from the Red Alga Grateloupia turuturu

Cardoso

Cotas

Rodrigues

et al. 2019

JMSE

Self Cite

View full text Add to dashboard Cite

Nowadays, the development of new drugs only relies on a small number of molecules and 50% of all existent drugs are extracted or synthetically obtained. This work intends to evaluate the antibacterial potential of the ethanolic and polysaccharide extracts obtained from Grateloupia turuturu and to characterize the composition of the alga’s polysaccharides by FTIR-ATR. We used sequential extraction to obtain the extracts that were tested against S. aureus and E. coli. The ethanolic extracts in E. coli, at the highest concentration used (15 mg mL−1) showed 45.7% (Tetrasporophyte extract) and 55.1% (Carposporophyte extract) of growth reduction and in S. aureus 56.2% (T extract) and 51.8% (C extract). Polysaccharide extracts started showing significant reduction effect on E. coli and S. aureus growth at 7.5 mg mL−1 with a reduction of 54.9% and 39.5%, respectively. At 15 mg mL−1 the reduction observed was 88.5% and 85.4%. The FTIR-ATR allowed to characterize G. turuturu’s polysaccharides concluding that it is composed by a hybrid kappa/iota carrageenan with traces of agar, in both phases of the life cycle. This work allows us to conclude about the antibacterial properties of this alga and the compounds that might be behind this activity, showing that there’s a lot more than a small number of molecules that can be used as natural drugs.

show abstract

Section: Collection and Treatment Of Samplesmentioning

confidence: 99%

Extraction and Analysis of Compounds with Antibacterial Potential from the Red Alga Grateloupia turuturu

Cardoso

Cotas

Rodrigues

et al. 2019

JMSE

Self Cite

View full text Add to dashboard Cite

show abstract

“…Algal polysaccharides enhance plant defense responses and protection by activating salicylic acid, jasmonic acid, and/or ethylene signaling pathways at a systemic level against various pathogenic fungi (Vera et al 2011). The antifungal mechanisms of carrageenans from Chondracathus teedei are depended on alterations of the cell walls of A. fumigatus and A. infectoria (Soares et al 2016).…”

Section: Antimicrobial Activitiesmentioning

confidence: 99%

Characterization and biological properties of sulfated polysaccharides of Corallina officinalis and Pterocladia capillacea

Ismail

Amer

2020

Acta Bot. Bras.

View full text Add to dashboard Cite

Red seaweed possess various sulfated polysaccharides (SPs) that could potentially be exploited as bioactive agents for medical and industrial applications. Crude polysaccharides from the red algae Corallina officinalis (SP1) and Pterocladia capillacea (SP2) were extracted and characterized according to their chemical content and their antioxidant, anti-inflammatory, anticoagulant, antibacterial, antifungal, and antifouling activities. The isolated polysaccharides contained low levels of protein and high levels of carbohydrate and sulfate. The extracted SPs were characterized by Fourier-transform infrared (FTIR) and nuclear magnetic resonance (NMR) spectral data and revealed that SP1 is composed of carrageenan, while SP2 is composed of polysaccharides containing sulfated galactans plus κand ι-carrageenan. Both isolated SPs exhibited all the tested biological activities but those of SP2 were superior. These results reflect the beneficial effects that red algal polysaccharides have as a natural renewable bio-product and that there is a significant relationship between polysaccharide structure, sulfate content and their biological properties. Further studies should be undertaken on the fractionation and characterization of polysaccharides extracted from species of red seaweed in addition to experiments to verify the efficiency of the extracted SPs for food and medical uses in vivo.

show abstract

“…The broth microdilution method, based on the CLSI M38-A standard (2002), was conducted as described previously. 35 The multiwell plates were incubated at 30°C, with orbital shaking at 120 rpm for 48 h for Aspergillus fumigatus while for Alternaria infectoria this incubation was continued for 72 h under alternating 12 h light enriched with UV and 12 h dark cycles. Since the extracts did not prevent growth, it was not possible to determine the minimum inhibitory concentration (MIC).…”

Section: Antifungal Activity Of O Pinnatifida Extractsmentioning

confidence: 99%

“…Since the extracts did not prevent growth, it was not possible to determine the minimum inhibitory concentration (MIC). Instead, as described previously by us, 35 the minimum effective concentration (MEC) was measured, which is defined as the lowest concentration of the drug yielding morphological alterations as described by others. 36 The extracts were added to Yeast Malt Extract medium (YME medium: 4% yeast extract, 10% malt extract and 10% glucose) at 10 and 100 μg mL −1 , inoculated with 10 4 conidia per mL and were incubated at 30°C at 120 rpm for 48 h. Mycelia were observed by optical microscopy, using an Eclipse E400 epi-fluorescence microscope (Nikon, Japan) and images were recorded with a DS-5 M digital camera (Nikon, Japan).…”

Section: Antifungal Activity Of O Pinnatifida Extractsmentioning

confidence: 99%

The antifungal activity of extracts of Osmundea pinnatifida, an edible seaweed, indicates its usage as a safe environmental fungicide or as a food additive preventing post-harvest fungal food contamination

et al. 2018

Self Cite

View full text Add to dashboard Cite

show abstract

Antifungal activity of carrageenan extracts from the red alga Chondracanthus teedei var. lusitanicus

Cited by 35 publications

References 43 publications

Extraction and Analysis of Compounds with Antibacterial Potential from the Red Alga Grateloupia turuturu

Extraction and Analysis of Compounds with Antibacterial Potential from the Red Alga Grateloupia turuturu

Characterization and biological properties of sulfated polysaccharides of Corallina officinalis and Pterocladia capillacea

The antifungal activity of extracts of Osmundea pinnatifida, an edible seaweed, indicates its usage as a safe environmental fungicide or as a food additive preventing post-harvest fungal food contamination

Contact Info

Product

Resources

About