Diversity of the fatty acids of the Nostoc species and their statistical analysis

Temina, Marina; Řezanková, Hana; Řezanka, Tomáš; Dembitsky, Valery M.

doi:10.1016/j.micres.2006.01.010

Cited by 64 publications

(37 citation statements)

References 36 publications

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“…Therefore, these parameters can vary depending upon the climatic zone where the study is been carried out. It was found large variations in individual fatty acid contents according to species, and location of the specific genus (Temina et al, 2007).…”

Section: Growth Conditionsmentioning

confidence: 98%

Isolation Purification and Culturing of Cyanobacteria and Microalgae towards Biodiesel Production: Current Status

Hossain¹,

Ratnayake²,

Kumara³

2016

AJBB

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The experimental design and techniques for biofuel production from different feedstock varies depending on geographical region, water sources (fresh water, sea water, waste water or brackish water) and overall, available species variations. Also the sampling, culture conditions, isolation, purification of cultures, harvesting, fatty acid extraction followed by conversion of extracted lipids to biofuel followed different methods in different studies. Therefore, it is a demand to simplify the techniques, improve the methods, and develop the efficiencies with less laborious inputs but rapid and best outcomes. Biofuel production research should focus not only selecting suitable biomass or obtaining high yield of lipids but also look for economically feasible method along with sufficient and continuous supply of biomass. Considering these, cyanobacteria and microalgae creates a great potential for biofuel production. In this review, we focused on compiling different materials and methods used for different studies and their best outputs towards biofuel production from cyanobacteria and micro-algae.

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Section: Growth Conditionsmentioning

confidence: 98%

Isolation Purification and Culturing of Cyanobacteria and Microalgae towards Biodiesel Production: Current Status

Hossain¹,

Ratnayake²,

Kumara³

2016

AJBB

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“…These hydroxy acids are also present in other biological matrixes such as honey [ 27 , 28 ]. Furthermore, 2OH4MP has been found in roasted cocoa [ 29 ], fermented soybean [ 30 ] and cyanobacteria [ 31 ]. 3OHBc is present in grape leaf tissue [ 32 ] and has been proposed as a biomarker of grape fungal resistance by Batovska et al [ 33 ].…”

Section: Introductionmentioning

confidence: 99%

Quantitative determination of five hydroxy acids, precursors of relevant wine aroma compounds in wine and other alcoholic beverages

2015

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A method for the quantitative determination of 2 hydroxy 2 methylbutanoic (2OH2MB), 2 hydroxy 3 methylbutanoic (2OH3MB), 3 hydroxy 3 methylbutanoic (3OH3MB), 2 hydroxy 4 methylpentanoic (2OH4MP) and 3 hydroxybutanoic (3OHB) acids has been optimized, validated and applied to a set of wines and other alcoholic beverages. The analytes were preconcentrated in a solid phase extraction cartridge and derivatized with 2,3,4,5,6 pentafluorobenzyl bromide at room temperature for 30 min, followed by GC MS analysis. Detection limits were between 0.5 and 29 μg L , and linearity was maintained up to 3 or 12 mg L , depending on the analyte. Recovery values were between 85 and 106 %, and reproducibility was better than 12 % RSD in most cases. The first specific study of these analytes in wine and other alcoholic beverages is herein reported. Concentrations ranged from the method detection limits to 7820, 519, 8510, 3470 and 2500 μg L for 2OH2MB, 2OH3MB, 3OH3MB, 2OH4MP and 3OHB, respectively, which may have relevant sensory effects. These products were not found in distillates (except 3OHB) but were all present in beer. 2OH2MB, 3OH3MB and 3OHB were found in unfermented grape derivatives. Sherry wines had the highest levels of all except for 3OHB.

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“…However, many discrepancies between traditional morphological classification (Rippka et al, 1979;Castenholz, 1989;Castenholz & Waterbury, 1989) and phylogenetic analysis are still unresolved (Gugger et al, 2002a, b;Komárek, 2010). Therefore, chemotaxonomic markers such as lipids and their fatty acids have been considered as complementary methodologies, since they provide interesting information for taxonomic position assignment and some correlations with morphological properties of cyanobacteria (Wilmotte, 1994;Li & Watanabe, 2001Gugger et al, 2002a, b;Temina et al, 2007;Li et al, 2008). Notwithstanding, the literature on lipid composition of freshwater cyanobacteria inhabiting different natural ecosystems in Portugal is nonexistent and polyphasic studies are scarce.…”

Section: Introductionmentioning

confidence: 99%

Morphological, biochemical and molecular characterization of Anabaena, Aphanizomenon and Nostoc strains (Cyanobacteria, Nostocales) isolated from Portuguese freshwater habitats

et al. 2010

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Studies of cyanobacterial nostocacean taxa are important to the global scientific community, mainly because a significant number of beneficial strains that belong to the order Nostocales fix atmospheric nitrogen, thus contributing to the fertility of agricultural soils worldwide, while others behave as nuisance microorganisms in aquatic ecosystems due to their involvement in toxic bloom events. However, in spite of their ecological importance and environmental concerns, their identification and taxonomy are still problematic and doubtful, often being based on current morphological and physiological studies, which generate confusing classification systems and usually vary under different conditions. Therefore, the present research aimed to investigate through a polyphasic approach differences in morphological, biochemical and genotypic features of three nostocacean cyanobacterial strains isolated from central-western Portuguese shallow freshwater bodies. Morphometric, genetic (16S rRNA, nifH and hetR fragments) and biochemical (fatty acid methyl ester; FAME profiles) data were used to characterize the strains. Morphological analysis and sequencing of 16S rRNA fragments showed that the strains belonged to Anabaena cylindrica (UTAD_A212), Aphanizomenon gracile (UADFA16) and Nostoc muscorum (UTAD_N213) species. These strains showed clear distinct morphological and genetic features, allowing easy allocation to their respective genera. The same happened by using partial sequences of hetR and nifH genes, in spite of the scarcity of deposited sequences. Biochemical characterization showed that the FAME profiles obtained were consistent with both morphological and molecular analyses. It was suggested that the ratio of monounsaturated to polyunsaturated FAMEs, together with the unsaturation index, could be used as genus-specific chemotaxonomic biomarkers.

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Diversity of the fatty acids of the Nostoc species and their statistical analysis

Cited by 64 publications

References 36 publications

Isolation Purification and Culturing of Cyanobacteria and Microalgae towards Biodiesel Production: Current Status

Isolation Purification and Culturing of Cyanobacteria and Microalgae towards Biodiesel Production: Current Status

Quantitative determination of five hydroxy acids, precursors of relevant wine aroma compounds in wine and other alcoholic beverages

Morphological, biochemical and molecular characterization of Anabaena, Aphanizomenon and Nostoc strains (Cyanobacteria, Nostocales) isolated from Portuguese freshwater habitats

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