Diets of Juvenile Atlantic Menhaden (Brevoortia tyrannus) in Three Estuarine Habitats as Determined from Fatty Acid Composition of Gut Contents

1975 ◽  
Vol 32 (5) ◽  
pp. 587-592 ◽  
Author(s):  
H. Perry Jeffries
Keyword(s):  
Fatty Acids ◽  
Organic Matter ◽  
Fatty Acid Composition ◽  
Fatty Acid ◽  
Particulate Organic Matter ◽  
Alimentary Canal ◽  
Atlantic Menhaden ◽  
Gut Contents ◽  
Brevoortia Tyrannus ◽  
Fatty Acid Compositions

Juvenile Atlantic menhaden (Brevoortia tyrannus) feed on zooplankton and particulate organic matter, but the importance of each material in the diet cannot be visually determined, because food is ground to an amorphous paste in the fish’s gizzard-like stomach. During early digestion in the anterior alimentary canal, fatty acids do not appear to change significantly, at least with respect to relative concentrations of saturated and unsaturated groups. Because zooplankton and particulate organic matter have markedly different fatty acid compositions, a hypothetical mixture of the two components can be calculated that best accounts for the observed fatty acid distributions of gut contents. Decreasing reliance on zooplankton, from bay through river to marsh, probably reflects resource abundances in three habitats and demonstrates adaptability of juvenile menhaden to different food supplies.

scholarly journals Classification of Turkish safflower oils based on their fatty acid and sterol profiles using multivariate techniques

2019 ◽  
Vol 11 (2) ◽  
pp. 259-265
Author(s):  
Asli Yorulmaz ◽  
Aydin Ünay
Keyword(s):  
Fatty Acids ◽  
Fatty Acid Composition ◽  
Fatty Acid ◽  
Linoleic Acid ◽  
Total Sterol ◽  
Ash Content ◽  
Multivariate Techniques ◽  
Oil Water ◽  
Fatty Acid Compositions

The aim of the current study was to classify Turkish safflower oils based on sterol and fatty acid composition. For this purpose, 37 samples from five different safflower varieties (Dinçer, Linas, Remzibey-05, Balcı and Olas) grown in the same agricultural and environmental conditions were obtained. Seeds were evaluated for their oil, water and ash content. Oils of seeds were extracted by solvent extraction and oils were analyzed for their sterols and fatty acids. Results have shown that Linas and Olas varieties’ oil contents were significantly higher than others’. There were clear differences in fatty acid compositions of various cultivars. Remzibey-05 and Olas varieties were different from others by their higher oleic and relatively lower linoleic acid ratios. Total sterol contents of oils ranged among 2700-3626 mg/kg and the main phytosterol was β-sitosterol covering 43.27-48.16 % of the total sterols

scholarly journals Genes and Dietary Fatty Acids in Regulation of Fatty Acid Composition of Plasma and Erythrocyte Membranes

Nutrients ◽  
2018 ◽  
Vol 10 (11) ◽  
pp. 1785 ◽  
Author(s):  
Maria Lankinen ◽  
Matti Uusitupa ◽  
Ursula Schwab
Keyword(s):  
Fatty Acids ◽  
Fatty Acid Composition ◽  
Fatty Acid ◽  
Acid Composition ◽  
Cell Membranes ◽  
Dietary Fatty Acids ◽  
Erythrocyte Membranes ◽  
Extensive Literature ◽  
Chromosome 11 ◽  
Fatty Acid Compositions

The fatty acid compositions of plasma lipids and cell membranes of certain tissues are modified by dietary fatty acid composition. Furthermore, many other factors (age, sex, ethnicity, health status, genes, and gene × diet interactions) affect the fatty acid composition of cell membranes or plasma lipid compartments. Therefore, it is of great importance to understand the complexity of mechanisms that may modify fatty acid compositions of plasma or tissues. We carried out an extensive literature survey of gene × diet interaction in the regulation of fatty acid compositions. Most of the related studies have been observational studies, but there are also a few intervention trials that tend to confirm that true interactions exist. Most of the studies deal with the desaturase enzyme cluster (FADS1, FADS2) in chromosome 11 and elongase enzymes. We expect that new genetic variants are being found that are linked with the genetic regulation of plasma or tissue fatty acid composition. This information is of great help to understanding the contribution of dietary fatty acids and their endogenic metabolism to the development of some chronic diseases.

The fatty acid composition of Blastocladiella emersonii

1970 ◽  
Vol 16 (12) ◽  
pp. 1161-1164 ◽  
Author(s):  
J. L. Sumner
Keyword(s):  
Fatty Acids ◽  
Arachidonic Acid ◽  
Fatty Acid Composition ◽  
Oleic Acid ◽  
Fatty Acid ◽  
Linolenic Acid ◽  
Total Lipids ◽  
Neutral And Polar Lipids ◽  
Blastocladiella Emersonii ◽  
Fatty Acid Compositions

The fatty acid compositions of the total, neutral, and polar lipids of Blastocladiella emersonii have been determined. Major fatty acids were palmitic, oleic, linoleic, γ-linolenic, and arachidonic acid. Polar lipid contained a higher proportion of linoleic, γ-linolenic, and arachidonic acid than did neutral or total lipids, whilst neutral lipid had a high proportion of palmitic and oleic acid. In addition to γ-linolenic acid, α-linolenic acid was also present; this is the first occasion that both isomers have been demonstrated in the same fungus, and the phylogenetic possibilities of this finding are discussed.

Seasonal Changes in Fatty Acid Composition of Cod Liver, Flesh, Roe, and Milt Lipids

1967 ◽  
Vol 24 (3) ◽  
pp. 613-627 ◽  
Author(s):  
P. M. Jangaard ◽  
R. G. Ackman ◽  
J. C. Sipos
Keyword(s):  
Fatty Acids ◽  
Fatty Acid Composition ◽  
Fatty Acid ◽  
Acid Composition ◽  
Seasonal Changes ◽  
Lower Percentage ◽  
Medium Size ◽  
Large Fish ◽  
Significant Difference ◽  
Fatty Acid Compositions

The fatty acid compositions of lipids from an isolated population of inshore cod (Gadus morhua L.) caught near Terence Bay, Nova Scotia, were determined each month on pooled samples of representative fish. Cod liver oil was studied over a period of 17 months, cod flesh for 12 months with the fatty acid compositions of milt, roe, flesh, and liver lipids being determined from some large, individual fish.The fatty acids of flesh lipids were independent of sex and showed very little, if any, seasonal changes except a slight variation in the long-chain monounsaturated acid 20:1 (max 2.8% vs. avg 1.6% and 1.1%). This was especially evident in large fish where the maximum (3.7%) coincided with the period of best "condition," August to November. There was also a significant difference between large and medium size fish in that in very large fish the content of 22:6 was much lower (26% vs. 33%). Liver oils in female fish contained increasing amounts of 20:1 (4.5 to 14.9%) and 22:1 (1.8 to 12.3%) fatty acids with increased fat content of the liver, maxima occurring in late summer and fall. In the male fish this seasonal trend was not as obvious. No other acids showed any definite seasonal variation. In the fatty acids of roe and milt lipid no definite relationship could be established between ripening and fatty acid composition. The fatty acids of the milt were similar to the roe except for a higher percentage of 18:1 and lower percentage of 16:1. The unsaponifiable matter was higher in milt than in roe lipids.These results indicate that due to the large variations that can occur in the fatty acid content of lipids from individual fish, a single analysis could give a fatty acid composition quite different from the average of a large number of determinations.

VARIETAL AND ENVIRONMENTAL EFFECTS ON RAPESEED: III. FATTY ACID COMPOSITION OF 1958 VARIETAL TESTS

1961 ◽  
Vol 41 (1) ◽  
pp. 204-210 ◽  
Author(s):  
B. M. Craig
Keyword(s):  
Fatty Acids ◽  
Fatty Acid Composition ◽  
Oleic Acid ◽  
Fatty Acid ◽  
Liquid Phase ◽  
Environmental Effects ◽  
Acid Content ◽  
Prediction Equation ◽  
Erucic Acid Content ◽  
Fatty Acid Compositions

The fatty acid compositions of the oil from 6 varieties of rapeseed grown at 22 stations were determined by gas liquid phase chromatography. Significant differences were found between stations for all fatty acids and between varieties for palmitic, stearic, oleic, linoleic, eicosenoic and erucic acids. The variations for palmitic, stearic, and eicosenoic acids were small, whereas major variations occurred in oleic, erucic and linoleic acids. A correlation coefficient of −0.975 was found between oleic and erucic acids and a prediction equation was determined to calculate oleic acid from the erucic acid content.

Effect of Various Technological Processes on the Fatty Acid Composition of Mussel (Mytilus galloprovincialis, L.)

2005 ◽  
Vol 1 (3) ◽  
Author(s):  
Semih Otles ◽  
Gulgun Sengor
Keyword(s):  
Fatty Acids ◽  
Fatty Acid Composition ◽  
Fatty Acid ◽  
Acid Composition ◽  
Mytilus Galloprovincialis ◽  
Processing Technique ◽  
Technological Processes ◽  
Maximum Decrease ◽  
Processing Techniques ◽  
Fatty Acid Compositions

In this study the effect of various processing techniques on the fatty acid composition of mussel, a member of bivalves, was investigated. According to the results, applied techniques such as smoking, pickling, and different kinds of cooking are recorded to have caused important changes in their fatty acid compositions. It was also seen that these changes were occurred from PUFA’s, ecosapentaenoic (EPA) (C20:5 n-3), and docosahexanoic (DHA) (C22:6 n-3) which are important especially in nutrition. Generally, in accord with the processing technique, a decrease in different proportions was found in the quantity of ecosapentaenoic and docosahexanoic acids. Maximum decrease in the mentioned fatty acids was especially observed in the mussels processed by frying and cooking.

scholarly journals Fatty Acid Composition of Juniperus Species (Juniperus Section) Native to Turkey

2012 ◽  
Vol 7 (7) ◽  
pp. 1934578X1200700 ◽  
Author(s):  
Ayşegül Güvenç ◽  
Nurgün Küçükboyacι ◽  
Ahmet Ceyhan Gören
Keyword(s):  
Mass Spectrometry ◽  
Fatty Acids ◽  
Gas Chromatography ◽  
Fatty Acid Composition ◽  
Fatty Acid ◽  
Gas Chromatography Mass Spectrometry ◽  
Seed Oils ◽  
Juniperonic Acid ◽  
Fatty Acid Patterns ◽  
Fatty Acid Compositions

Fatty acid compositions of seeds of five taxa of the Juniperus section of the genus Juniperus L. (Cupressaceae), i. e. J. drupacea Lab., J. communis L. var. communis, J. communis var. saxatilis Pall., J. oxycedrus L. subsp. oxycedrus, and J. oxycedrus subsp. macrocarpa (Sibth. & Sm.) Ball, were investigated. Methyl ester derivatized fatty acids of the lipophylic extracts of the five species were comparatively analyzed by capillary gas chromatography-mass spectrometry (GC-MS). Juniperus taxa showed uniform fatty acid patterns, among which linoleic (25.8–32.5%), pinolenic (11.9–24.1%) and oleic acids (12.4–17.2%) were determined to be the main fractions in the seed oils. Juniperonic acid was found to be remarkably high in J. communis var. saxatilis (11.4 %), J. oxycedrus subsp. oxycedrus (10.4 %), and J. communis var. communis (10.1 %). To the best of our knowledge, the present work discloses the first report on the fatty acid compositions of seeds of this Juniperus section grown in Turkey.

Retail lamb fat composition in western Canada

2019 ◽  
Vol 99 (4) ◽  
pp. 971-974 ◽  
Author(s):  
M.E.R. Dugan ◽  
V. Salazar ◽  
D.C. Rolland ◽  
P. Vahmani ◽  
J.L. Aalhus ◽  
...  
Keyword(s):  
Fatty Acids ◽  
Fatty Acid Composition ◽  
Fatty Acid ◽  
New Zealand ◽  
Acid Composition ◽  
North American ◽  
Western Canada ◽  
Fat Composition ◽  
Fatty Acid Compositions

The fatty acid composition of retail lamb backfat commonly available in Western Canada was analyzed, including 16 lambs collected from a slaughter plant in central Alberta, and backfat collected from racks and chops imported from Australia (n = 8) and New Zealand (n = 8). Lamb fat from New Zealand was the richest source of vaccenic and rumenic acids. Both New Zealand and Australian lamb were the richest source of n-3 fatty acids. North American lamb was richer in t10-18:1, but a subset had fatty acid compositions similar to New Zealand lamb.

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