Seasonal variation of polar lipid content in bovine milk

2017 ◽  
Vol 237 ◽  
pp. 865-869 ◽  
Author(s):  
Zhiqian Liu ◽  
Amy Logan ◽  
Benjamin G. Cocks ◽  
Simone Rochfort
Keyword(s):  
Seasonal Variation ◽  
Lipid Content ◽  
Polar Lipid ◽  
Bovine Milk

Seasonal Changes in General Condition and Lipid Content of Cod from Inshore Waters

1967 ◽  
Vol 24 (3) ◽  
pp. 607-612 ◽  
Author(s):  
P. M. Jangaard ◽  
H. Brockerhoff ◽  
R. D. Burgher ◽  
R. J. Hoyle
Keyword(s):  
Seasonal Variation ◽  
Nova Scotia ◽  
Lipid Content ◽  
General Condition ◽  
Seasonal Variations ◽  
Seasonal Changes ◽  
Oil Content ◽  
Gadus Morhua ◽  
Male Fish ◽  
Inshore Waters

The seasonal variations in lipid content and general "condition" of cod, Gadus morhua L., from an inshore population have been determined.Four female and four male fish were chosen from 20 live cod brought in monthly from Terence Bay, Halifax County, Nova Scotia, the fish were pooled and the lipid content determined on the flesh, livers, and gonads. The flesh lipids varied from 0.57% to 0.74% and the oil content of the livers from 15% to 75%.The general "condition" of the fish as expressed by [Formula: see text], the liver condition by [Formula: see text], and the fat content of the liver all showed seasonal variation with maxima in the fall and minima in the spring. KF varied from 0.79 to 1.05 and KL from 1.0 to 4.5. No seasonal variation in the amount of flesh lipids could be detected.

scholarly journals Pathogen and Circadian Controlled 1 (PCC1) regulates polar lipid content, ABA-related responses, and pathogen defence in Arabidopsis thaliana

2013 ◽  
Vol 64 (11) ◽  
pp. 3385-3395 ◽  
Author(s):  
Ricardo Mir ◽  
M. Luisa Hernández ◽  
Eliane Abou-Mansour ◽  
José Manuel Martínez-Rivas ◽  
Félix Mauch ◽  
...  
Keyword(s):  
Arabidopsis Thaliana ◽  
Lipid Content ◽  
Polar Lipid ◽  
Pathogen Defence

Zooplankton, lipids and stable isotopes: importance of seasonal, latitudinal, and taxonomic differences

2010 ◽  
Vol 67 (11) ◽  
pp. 1721-1729 ◽  
Author(s):  
Jari Syväranta ◽  
Milla Rautio
Keyword(s):  
Stable Isotopes ◽  
Seasonal Variation ◽  
Lipid Content ◽  
Calanoid Copepod ◽  
Isotopic Fractionation ◽  
Model Parameters ◽  
Calanoid Copepods ◽  
Subarctic Lakes ◽  
Lipid Contents ◽  
The Difference

We found considerable seasonal, latitudinal, and taxonomic differences in zooplankton lipid content and concurrent δ13C values of zooplankton. We collected cladoceran as well as cyclopoid and calanoid copepod zooplankton from boreal and subarctic lakes throughout a year, allowing us to study zooplankton likely subjected to different isotopic fractionation processes and with highly variable lipid contents. Considerable seasonal variation was observed in the difference between bulk and lipid-extracted zooplankton δ13C values, indicating that seasonally changing lipid content introduced notable variation in zooplankton δ13C values. The difference between bulk and lipid-extracted material was most amplified in lipid-rich subarctic zooplankton in winter, δ13C difference being >5 units. Significant differences were also observed among zooplankton taxa, with copepods showing a greater lipid impact on δ13C than cladocerans. Published lipid correction models failed to produce satisfying fits to our data, and considerable variation was left even after recalibrating the model parameters. This was likely due to taxonomic differences in lipid effects on δ13C values. We therefore produced separate mass balance-based lipid correction models for cladocerans and also cyclopoid and calanoid copepods. We conclude that arithmetic lipid correction models perform well with zooplankton samples, but taxonomic differences need to be considered.

Temporal variation in the fatty acid composition of ovigerous females and embryos of the squat lobster Pleuroncodes monodon (Decapoda, Munididae)

2017 ◽  
Vol 98 (8) ◽  
pp. 1977-1990 ◽  
Author(s):  
Miguel Bascur ◽  
Fabián Guzmán ◽  
Sergio Mora ◽  
Pepe Espinoza ◽  
Ángel Urzúa
Keyword(s):  
Fatty Acids ◽  
Fatty Acid Composition ◽  
Seasonal Variation ◽  
Fatty Acid ◽  
Fatty Acid Profile ◽  
Acid Composition ◽  
Lipid Content ◽  
Humboldt Current ◽  
Fishery Resource ◽  
Key Species

Pleuroncodes monodon, an important fishery resource and key species in the Humboldt Current Large Marine ecosystem, has a prolonged reproductive period from winter until end of summer, and during this time females incubating their embryos are exposed to seasonal variation in food availability and in temperature. Additionally, in order to ensure successful reproduction and survival of embryos, changes occur in the main internal reserves and/or sources of energy of P. monodon. The aim of this study was to determine the extent of seasonal variation (winter vs summer) in the lipid content and fatty acid composition of ovigerous females and their embryos. The results show that a higher percentage of saturated and polyunsaturated fatty acids are found in females in winter. Similarly, the composition of fatty acids in embryos found here indicates that winter embryos have more saturated fatty acids and essential fatty acids (C18:2n6cis, C18:3n6 and C22:6n3) than do summer embryos. According to PCA analysis of fatty acid profile, samples from summer may be distinguished into two isolated groups with conspicuous variations in fatty acids profile of embryo and hepatopancreas. While in winter, the opposite pattern occurs in the fatty acid profile of embryo and hepatopancreas. These variations may be related to relevant physiological processes (reproduction and growth) and of their ontogeny (development and survival of offspring). Seasonal variation in the lipid content and composition of fatty acids of P. monodon could directly impact this species’ reproduction and survival and subsequently could have consequences on the food web and fishery exploitation.

Seasonal variation of lipid content and fatty acid composition of Sardinella aurita from the Tunisian coast

2009 ◽  
Vol 90 (3) ◽  
pp. 569-573 ◽  
Author(s):  
F. Ben Rebah ◽  
A. Abdelmouleh ◽  
W. Kammoun ◽  
A. Yezza
Keyword(s):  
Fatty Acids ◽  
Seasonal Variation ◽  
Chemical Composition ◽  
Palmitic Acid ◽  
Lipid Content ◽  
Total Lipid Content ◽  
Monounsaturated Fatty Acids ◽  
Omega 3 ◽  
Commercial Fish ◽  
Sardinella Aurita

This study was conducted to clarify the seasonal variation of the chemical composition of the Tunisian Sardinella aurita with a focus on the total lipid content. The chemical composition showed a large fluctuation over years in response to various factors. For the entire fish, lipid content was lower in July (2.50%), but higher in November (10.25%). It varies with seasons in inverse proportion to water content. Interestingly, it was found that red muscle have much higher lipid content than white muscle and the entire fish body. The major fatty acids in S. aurita lipids were palmitic acid, palmitoleic acid, eicosapentaenoic acid, docosahexaenoic acid and myristic acid. Palmitic acid comprised the main proportion (23.9%). The high amounts of saturated and monounsaturated fatty acids in the screened species are almost in agreement with other studies. Moreover, the percentage of omega-3 fatty acids (25%) was very similar to that in oil production commercial fish.

Seasonal variation in the positional distribution of fatty acids in bovine milk fat

2021 ◽  
Author(s):  
Sine Yener ◽  
Sara Pacheco-Pappenheim ◽  
Jeroen M.L. Heck ◽  
Hein J.F. van Valenberg
Keyword(s):  
Fatty Acids ◽  
Seasonal Variation ◽  
Milk Fat ◽  
Positional Distribution ◽  
Bovine Milk

Bovine Milk Oligosaccharide Contents Show Remarkable Seasonal Variation and Intercow Variation

2017 ◽  
Vol 65 (7) ◽  
pp. 1307-1313 ◽  
Author(s):  
Zhiqian Liu ◽  
Martin Auldist ◽  
Marlie Wright ◽  
Benjamin Cocks ◽  
Simone Rochfort
Keyword(s):  
Seasonal Variation ◽  
Bovine Milk ◽  
Milk Oligosaccharide

scholarly journals Unraveling the Lipidome and Antioxidant Activity of Native Bifurcaria bifurcata and Invasive Sargassum muticum Seaweeds: A Lipid Perspective on How Systemic Intrusion May Present an Opportunity

Antioxidants ◽  
2020 ◽  
Vol 9 (7) ◽  
pp. 642
Author(s):  
Fábio Santos ◽  
João P. Monteiro ◽  
Daniela Duarte ◽  
Tânia Melo ◽  
Diana Lopes ◽  
...  
Keyword(s):  
Mass Spectrometry ◽  
Antioxidant Activity ◽  
Lipid Profile ◽  
Lipid Content ◽  
Polar Lipid ◽  
Sargassum Muticum ◽  
Brown Seaweeds ◽  
Bifurcaria Bifurcata ◽  
Chromatography Mass Spectrometry ◽  
Lipid Species

Brown seaweeds are known to present components with appealing bioactive properties eliciting great interest for industrial applications. However, their lipid content is generally disregarded beyond their fatty acid (FA) composition. This study thoroughly characterized the lipid profile of two brown seaweeds collected from Portuguese coast, the native Bifurcaria bifurcata and the invasive Sargassum muticum species, and bioprospecting for antioxidant activity. An integrated state-of-the-art approach including gas chromatography-mass spectrometry (GC–MS) and liquid chromatography-mass spectrometry (HILIC–ESI-MS/MS), allowed a comprehensive picture of FA and polar lipid content. Polar lipid profile of B. bifurcata and S. muticum included 143 and 217 lipid species respectively, distributed between glycolipids, phospholipids, and betaine lipids. Some of the lipid species found have been assigned biological activity and contain of n-3 and n-6 FA. Sargassum muticum presented the highest n-3 FA content. Low concentrations of extracts of both seaweeds displayed antioxidant activity, with S. muticum presenting more promising results. These findings contribute to the nutritional and industrial exploitation of both seaweeds, highlighting their relevance as viable sources of bioactive and added-value compounds. Sargassum muticum presented interesting lipid composition and bioactivity, which may represent an accessible opportunity for the exploitation of this invasive seaweed, especially taking advantage of Sargassum blooms.

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