scholarly journals Seasonal Variation of the Proximate Composition, Mineral Content, Fatty Acid Profiles and Other Phytochemical Constituents of Selected Brown Macroalgae

Marine Drugs ◽  
2021 ◽  
Vol 19 (4) ◽  
pp. 204
Author(s):  
Marco Garcia-Vaquero ◽  
Gaurav Rajauria ◽  
Marta Miranda ◽  
Torres Sweeney ◽  
Marta Lopez-Alonso ◽  
...  
Keyword(s):  
Fatty Acid ◽  
Mineral Content ◽  
Fatty Acid Profiles ◽  
Laminaria Digitata ◽  
Laminaria Hyperborea ◽  
Brown Macroalgae ◽  
The West ◽  
Macroalgal Species ◽  
Mineral Profile ◽  
Phytochemical Constituents

The main objective was to determine the chemical, phytochemical, fatty acid and mineral profiles of three commercially relevant brown macroalgae (Laminaria digitata, Laminaria hyperborea and Ascophyllum nodosum) collected each season for two years off the west coast of Ireland. All the chemical, phytochemical, fatty acid and minerals analysed varied significantly depending on the macroalgal species, season and year of collection. Overall, the protein contents of macroalgae were negatively correlated with carbohydrate content. Protein (2–11%) was at its highest during winter and/or spring, decreasing to a minimum during summer and/or autumn. The three macroalgal species analysed in this study had clearly differentiated fatty acid profiles. The concentration of fatty acids was higher in A. nodosum compared with both Laminaria species. The mineral profile of the three macroalgal species was rich in essential metals, particularly Ca, Mg and P, while the levels of I were approximately 9- to 10-fold higher in both Laminaria spp. compared with A. nodosum. The levels of toxic metals (Cd, Hg and Pb) in all the macroalgal species studied were low in the current study; while the levels of total As were high (49–64 mg/kg DW macroalgae) compared with previous reports.

Evaluation of fatty acid profiles and mineral content of grape seed oil of some grape genotypes

2009 ◽  
Vol 60 (1) ◽  
pp. 32-39 ◽  
Author(s):  
Serpil Gök Tangolar ◽  
Yeşim özoğul ◽  
>Semih Tangolar ◽  
Ayfer Torun
Keyword(s):  
Fatty Acid ◽  
Mineral Content ◽  
Seed Oil ◽  
Grape Seed ◽  
Fatty Acid Profiles ◽  
Grape Seed Oil

Sterol and fatty acid profiles of three macroalgal species collected from the Chabahar coasts, southeastern Iran

2020 ◽  
Author(s):  
Paria Akbary ◽  
Lawrence M. Liao ◽  
Zahra Aminikhoei ◽  
Kamran Rezaeie Tavabe ◽  
Mehrdad Hobbi ◽  
...  
Keyword(s):  
Fatty Acid ◽  
Fatty Acid Profiles ◽  
Macroalgal Species

scholarly journals Fatty Acid Profiles of Stipe and Blade from the Norwegian Brown Macroalgae Laminaria hyperborea with Special Reference to Acyl Glycerides, Polar Lipids, and Free Fatty Acids

2017 ◽  
Vol 2017 ◽  
pp. 1-9 ◽  
Author(s):  
Lena Foseid ◽  
Hanne Devle ◽  
Yngve Stenstrøm ◽  
Carl Fredrik Naess-Andresen ◽  
Dag Ekeberg
Keyword(s):  
Fatty Acids ◽  
Fatty Acid ◽  
Polyunsaturated Fatty Acids ◽  
Free Fatty Acids ◽  
Neutral Lipids ◽  
Dry Weight ◽  
Polar Lipids ◽  
Fatty Acid Profiles ◽  
Laminaria Hyperborea ◽  
Lipid Fractions

A thorough analysis of the fatty acid profiles of stipe and blade from the kelp species Laminaria hyperborea is presented. Lipid extracts were fractionated into neutral lipids, free fatty acids, and polar lipids, prior to derivatization and GC-MS analysis. A total of 42 fatty acids were identified and quantified, including the n-3 fatty acids α-linolenic acid, stearidonic acid, and eicosapentaenoic acid. The fatty acid amounts are higher in blade than in stipe (7.42 mg/g dry weight and 2.57 mg/g dry weight, resp.). The highest amounts of n-3 fatty acids are found within the neutral lipid fractions with 590.6 ug/g dry weight and 100.9 ug/g dry weight for blade and stipe, respectively. The amounts of polyunsaturated fatty acids are 3.4 times higher in blade than stipe. The blade had the highest PUFA/SFA ratio compared to stipe (1.02 versus 0.76) and the lowest n-6/n-3 ratio (0.8 versus 3.5). This study highlights the compositional differences between the lipid fractions of stipe and blade from L. hyperborea. The amount of polyunsaturated fatty acids compared to saturated- and monounsaturated fatty acids is known to influence human health. In the pharmaceutical, food, and feed industries, this can be of importance for production of different health products.

scholarly journals Impact of Ag Nanoparticles (AgNPs) and Multimicrobial Preparation (EM) on the Carcass, Mineral and Fatty Acid Composition of Cornu aspersum aspersum Snails

Animals ◽  
2021 ◽  
Vol 11 (7) ◽  
pp. 1926
Author(s):  
Tomasz Niemiec ◽  
Andrzej Łozicki ◽  
Robert Pietrasik ◽  
Sylwester Pawęta ◽  
Anna Rygało-Galewska ◽  
...  
Keyword(s):  
Silver Nanoparticles ◽  
Fatty Acid Composition ◽  
Fatty Acid ◽  
Chemical Composition ◽  
Ag Nanoparticles ◽  
Mineral Content ◽  
Pathogenic Microorganisms ◽  
Fatty Acid Profiles ◽  
Effective Microorganisms ◽  
Cornu Aspersum

The hygienic practices on farms should reduce pathogenic microorganisms while simultaneously not harming the animals themselves; they must also not degrade the products’ quality. We assessed the effect of covering feed tables with paint containing silver nanoparticles (AgNPs) and the periodic spraying of effective microorganisms (EM) on production indicators and basic chemical composition, mineral content and fatty acid profiles in the bodies of Cornu aspersum aspersum snails. The animals were divided into four groups: (1) control, (2) with feed tables covered with AgNPs paint, (3) with EM spray applied and (4) with both factors—AgNP paint and EM spray. The highest increase in Ag, Zn, Fe and Ca retention, and the remodelling of the fatty acid profile in the carcasses of snails was found to be in the group of animals in contact with the feed tables covered with AgNP paint. In the group of animals exposed to the action of EM, an increased retention of Fe, Cu, P, Mg and Zn was found.

Trophic niches determined from fatty acid profiles of sympatric coral reef mesopredators

2019 ◽  
Vol 632 ◽  
pp. 159-174 ◽  
Author(s):  
SL Bierwagen ◽  
H Pethybridge ◽  
MR Heupel ◽  
A Chin ◽  
CA Simpfendorfer
Keyword(s):  
Fatty Acid ◽  
Coral Reef ◽  
Fatty Acid Profiles ◽  
Trophic Niches

The assessment of biofilm community composition on plumbing materials in filtered and unfiltered water distribution systems

2003 ◽  
Vol 3 (1-2) ◽  
pp. 187-191
Author(s):  
M.M. Critchley ◽  
N.J. Cromar ◽  
H.J. Fallowfield
Keyword(s):  
Drinking Water ◽  
Fatty Acid ◽  
Community Composition ◽  
Distribution Systems ◽  
Water Distribution ◽  
Water Distribution Systems ◽  
Polymer Materials ◽  
Fatty Acid Profiles ◽  
Water Supplies ◽  
Drinking Water Distribution Systems

Biofilms have been extensively characterised within drinking water distribution systems. However, the significance of materials on biofilm species diversity is not established. This study investigated the community composition of biofilms on plumbing materials receiving filtered and unfiltered water supplies. Biofilms were extracted from polybutylene, polyethylene, cross-linked polyethylene, unplasticised polyvinyl chloride and copper tubes in sampling rigs receiving Murray-Onkaparinga water before or after filtration. Biofilms were extracted and analysed for fatty acid composition using the FAME™ methodology. There were differences in the fatty acid profiles of biofilms and the respective water supplies, indicating differences in the attached and planktonic communities. The results also showed significant differences in the fatty acid profiles of biofilms on the polymer materials compared to copper, suggesting variations in biofilm populations on the different materials. The potential for materials to select for microbial populations has significant implications for the ecology of drinking water biofilms.

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