Lipids and fatty acid composition of particulate matter in the North Atlantic: importance of spatial heterogeneity, season and community structure

2014 ◽  
Vol 161 (9) ◽  
pp. 1951-1971 ◽  
Author(s):  
P. Mayzaud ◽  
M. Boutoute ◽  
S. Gasparini ◽  
L. Mousseau
Keyword(s):  
Fatty Acid Composition ◽  
Particulate Matter ◽  
Community Structure ◽  
Fatty Acid ◽  
Spatial Heterogeneity ◽  
Acid Composition ◽  
North Atlantic ◽  
The North ◽  
The North Atlantic

scholarly journals Technological Composition Analysis of the Rabbitfish (Chimaera monstrosa) in the North Atlantic

2020 ◽  
Vol 50 (2) ◽  
pp. 222-231
Author(s):  
Anna Mukhortova ◽  
Olga Uzbekova ◽  
Ivan Lyzhov
Keyword(s):  
Fatty Acid Composition ◽  
Fatty Acid ◽  
Amino Acid ◽  
Chemical Composition ◽  
Acid Composition ◽  
North Atlantic ◽  
Food Industry ◽  
Fractional Composition ◽  
The North ◽  
The North Atlantic

Introduction. Deep-sea fauna of the North Atlantic has a great potential for the development of food industry. Rabbitfish (Chimaera monstrosa) is a hydrobionts that makes up a significant proportion of bycatch in the traditional trawl and longline fishery. The research objective was to determine the technochemical composition and biochemical properties of organs and tissues of rabbitfish. Study objects and methods. The size-mass and total chemical composition was performed by standard methods. The amino acid composition of proteins was determined by chromatographic separation of amino acid derivatives obtained by reaction with orthophthalic aldehyde and β-mercaptoethanol. The method of one-dimensional thin-layer chromatography made it possible to determine the fractional composition of lipids. The fatty acid composition was determined using an S-180 gas-liquid chromatograph (Yanaco, Japan). The fat-soluble vitamins were determined by the saponification of samples with alkali, extraction, and separation of the unsaponifiable part. The fractional composition of proteins became clear after a planar polyacrylamide gel electrophoresis on (MultiPhor II, Sweden). Results and discussion. The research featured the size-mass and chemical composition of body parts, the fractional and amino acid composition of proteins, as well as the fractional and fatty acid composition of lipids, vitamins, heavy metals, and organochlorine compounds in the tissues and organs of the rabbitfish. The sensory properties of the samples proved quite high. Hot smoked rabbitfish meat can be recommended for snack foods. Waste (heads, entrails, skin, cartilage, fins) makes up more than 50% of total body weight and can be used in feed production or as a protein-containing raw material for hydrolysates in microbiology, medicine, and food industry. Conclusion. The research involved a complex biochemical study of the rabbitfish organs and tissues. The performed technochemical studies made it possible to give preliminary recommendations on the directions of its most rational integrated use.

Fatty Acids in Surface Particulate Matter From the North Atlantic

1972 ◽  
Vol 29 (10) ◽  
pp. 1482-1486 ◽  
Author(s):  
David M. Schultz ◽  
James G. Quinn
Keyword(s):  
Particulate Matter ◽  
Fatty Acid ◽  
North Atlantic ◽  
Fatty Acid Distribution ◽  
The North ◽  
Polyunsaturated Acids ◽  
Carbon Acids ◽  
The North Atlantic ◽  
Branched Chain ◽  
Long Chain

The fatty acid composition of particulate matter from surface waters in the North Atlantic has been investigated. A high proportion is long-chain polyunsaturated acids, typical of a marine origin. The low relative abundance of iso and anteiso 15-carbon acids indicates little bacterial contribution to the particulate matter. This fatty acid distribution is in contrast to that found in estuarine particulate matter, which contains only trace amounts of the long-chain polyunsaturated acids and substantial quantities of branched chain acids.

Latitudinal and temporal variability in the community structure and fatty acid composition of deep-sea nematodes in the Southern Ocean

2013 ◽  
Vol 110 ◽  
pp. 80-92 ◽  
Author(s):  
Katja Guilini ◽  
Gritta Veit-Köhler ◽  
Marleen De Troch ◽  
Dirk Van Gansbeke ◽  
Ann Vanreusel
Keyword(s):  
Fatty Acid Composition ◽  
Community Structure ◽  
Fatty Acid ◽  
Southern Ocean ◽  
Acid Composition ◽  
Deep Sea ◽  
Temporal Variability

scholarly journals The Influence of Temperature and Community Structure on Light Absorption by Phytoplankton in the North Atlantic

Sensors ◽  
2019 ◽  
Vol 19 (19) ◽  
pp. 4182 ◽  
Author(s):  
Robert J.W. Brewin ◽  
Stefano Ciavatta ◽  
Shubha Sathyendranath ◽  
Jozef Skákala ◽  
Jorn Bruggeman ◽  
...  
Keyword(s):  
Community Structure ◽  
North Atlantic ◽  
Ocean Colour ◽  
Validation Data ◽  
Influence Of Temperature ◽  
New Model ◽  
Independent Validation ◽  
The North ◽  
Phytoplankton Absorption ◽  
The North Atlantic

We present a model that estimates the spectral phytoplankton absorption coefficient ( a p h ( λ ) ) of four phytoplankton groups (picophytoplankton, nanophytoplankton, dinoflagellates, and diatoms) as a function of the total chlorophyll-a concentration (C) and sea surface temperature (SST). Concurrent data on a p h ( λ ) (at 12 visible wavelengths), C and SST, from the surface layer (<20 m depth) of the North Atlantic Ocean, were partitioned into training and independent validation data, the validation data being matched with satellite ocean-colour observations. Model parameters (the chlorophyll-specific phytoplankton absorption coefficients of the four groups) were tuned using the training data and found to compare favourably (in magnitude and shape) with results of earlier studies. Using the independent validation data, the new model was found to retrieve total a p h ( λ ) with a similar performance to two earlier models, using either in situ or satellite data as input. Although more complex, the new model has the advantage of being able to determine a p h ( λ ) for four phytoplankton groups and of incorporating the influence of SST on the composition of the four groups. We integrate the new four-population absorption model into a simple model of ocean colour, to illustrate the influence of changes in SST on phytoplankton community structure, and consequently, the blue-to-green ratio of remote-sensing reflectance. We also present a method of propagating error through the model and illustrate the technique by mapping errors in group-specific a p h ( λ ) using a satellite image. We envisage the model will be useful for ecosystem model validation and assimilation exercises and for investigating the influence of temperature change on ocean colour.

Biochemical Characteristics of Suspended Particulate Matter on a Latitudinal Transect in the North Atlantic

Oceanology ◽  
2018 ◽  
Vol 58 (4) ◽  
pp. 573-582
Author(s):  
N. V. Politova ◽  
A. S. Savvichev ◽  
A. A. Klyuvitkin ◽  
M. D. Kravchishina ◽  
A. B. Demidov ◽  
...  
Keyword(s):  
Particulate Matter ◽  
Suspended Particulate Matter ◽  
North Atlantic ◽  
Biochemical Characteristics ◽  
The North ◽  
Suspended Particulate ◽  
Latitudinal Transect ◽  
The North Atlantic
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