scholarly journals Can the early stage copepad (Copepodites and Naupliies) abundance play important role on the fatty acid composition of Sagitta setosa (Chaetognatha) in the Southeastern Black Sea?

2020 ◽  
Vol 37 (4) ◽  
pp. 335-342
Author(s):  
Nurgül Sen Özdemir ◽  
Ali Muzaffer Feyzioglu ◽  
Fatma Caf
Keyword(s):  
Fatty Acids ◽  
Fatty Acid Composition ◽  
Fatty Acid ◽  
Acid Composition ◽  
Early Stage ◽  
Sampling Period ◽  
Copepod Abundance ◽  
Parallel Increase ◽  
The Relationship ◽  
Parallel Distribution

In this study, the relationship between the fatty acid composition, abundance of carnivore Sagitta setosa (S. setosa) and total copepod abundance (copepodites and nauplii) which are the main diets of S. setosa was investigated. Sampling was conducted monthly during a year. During the sampling period, S. setosa and the total the copepod abundance showed a parallel distribution until November. Average total lipid was at the highest with 3% in spring and autumn, while the lowest was 2% in winter and summer. While DHA/EPA ratio (2.23) as carnivory index in S. setosa and the total copepod (copepodites and nauplii) abundance (1375 ind/m3) were at the highest in winter, but another carnivory index, 18:1ω9/18:1ω7 ratio did not show a parallel increase with copepod abundance. However, 18:1ω9 which increases the carnivory index, is among the main fatty acids in S. setosa. This might be indicated that S. setosa does not related to predation on the copepods, but it shows that feeding in a carnivorous style. Additionally, the herbivory index ∑ n-3/∑ n-6 ratio was detected in spring and autumn at the highest level. Consequently, although there is no direct effect between the copepod abundance and S. setosa fatty acids, it is possible an indirect effect.

scholarly journals The Relationship Between Fatty Acid Composition and Cold Hardiness of Pecan Cultivars

HortScience ◽  
2004 ◽  
Vol 39 (4) ◽  
pp. 858A-858
Author(s):  
Sameera Bafeel* ◽  
Frank Matta
Keyword(s):  
Fatty Acids ◽  
Fatty Acid Composition ◽  
Fatty Acid ◽  
Cold Acclimation ◽  
Acid Composition ◽  
Cold Hardiness ◽  
Unsaturated Fatty Acids ◽  
Time Period ◽  
Cultivated Plant ◽  
The Relationship

Temperature is a major environmental factor governing the distribution of both wild and cultivated plant species. During acclimation and deacclimation plants undergo a series of metabolic changes that lead to cold hardiness or loss of hardiness. One of these changes is the accumulation of certain lipids. This research was conducted to compare hardiness among three pecan cultivars: `Desirable', `Jackson', and `Owens' growing under Mississippi condition and to determine the relationship between fatty acid levels and cold hardiness of pecan shoots. Differential thermal analysis (DTA), electrical conductivity, and tetrazolium tests were used to determine cold hardiness. Pecan stems were collected from September to March in 2002 and 2003 to determine cold acclimation and deacclimation. Fatty acid composition of pecan stems during this time period was determined by gas chromatography. DTA indicated that pecan stems acclimated in October and deacclimated in March. During cold acclimation, there was a shift in the fatty acid composition to more unsaturated fatty acids. The percentage of linoleic and linolenic fatty acids increased, while the percentage of palmitic and stearic fatty acids decreased. The correlation between unsaturated fatty acids and cold hardiness suggests that unsaturated fatty acid may play a role in membrane fluidity.

scholarly journals The Relationship between Acrosome Reaction and Polyunsaturated Fatty Acid Composition in Boar Sperm

2019 ◽  
Author(s):  
Sang-Hee Lee ◽  
Yu-Jin Kim ◽  
Byeong Ho Kang ◽  
Choon-Keun Park
Keyword(s):  
Fatty Acids ◽  
Fatty Acid Composition ◽  
Plasma Membrane ◽  
Fatty Acid ◽  
Acid Composition ◽  
Acrosome Reaction ◽  
Membrane Integrity ◽  
Plasma Membrane Integrity ◽  
Boar Sperm ◽  
The Relationship

This study investigated the relationship of acrosome reactions and fatty acid composition on fertility in boar sperm. The acrosome reaction of sperm was induced via methyl-beta-cyclodextrin (MBCD), and acrosome reaction, plasma membrane integrity, and fertility were analyzed. The fatty acid composition of the excess acrosome reacted sperm was determined via gas chromatography. The results showed that the acrosome reaction in sperm was induced over 85% of the time by 60 mM MBCD treatment, and the plasma membrane integrity was significantly decreased and was dependent on the MBCD level. The acrosome reacted sperm resulted in significantly higher saturated fatty acids (SFAs) and lower unsaturated fatty acids (PUFAs) than the non-acrosome reaction group. Moreover, the acrosome reacted sperm from 60 mM MBCD significantly decreased in vitro fertility and blastocyst formation relative to non-acrosome reacted sperm, and the acrosome reaction was positively correlated with SFAs and negatively correlated with PUFAs. Of these fatty acids, C22:5n-6 (docosapentaenoic acid [DPA]) and C22:6n-3 (docosahexaenoic acid [DHA]) were directly negatively correlated with the acrosome reaction (r = -0.982 and -0.947, respectively). In conclusion, the excessive acrosome reactions may occur by reducing the PUFAs, which may then dramatically decrease sperm fertility in pigs.

scholarly journals Relationship between the content of chlorinated hydrocarbons and fatty acid composition of milk fat

2018 ◽  
Vol 62 (1) ◽  
pp. 71-78 ◽  
Author(s):  
Renata Pietrzak-Fiećko
Keyword(s):  
Fatty Acids ◽  
Fatty Acid Composition ◽  
Fatty Acid ◽  
Acid Composition ◽  
Negative Correlation ◽  
Milk Fat ◽  
Environmental Pollutants ◽  
Cow Milk ◽  
Positive Correlation ◽  
The Relationship

AbstractIntroductionReports that the presence of persistent organic pollutants in fat may affect fatty acid metabolism prompted this research aiming to study the relationship between the contents of γ-HCH and DDT, DDE, DDD, and ΣDDT, and fatty acid composition of milk fat.Material and MethodsThe material consisted of 50 samples of cow and mare milk, collected in 2015. Ludwicki’s and the Röse-Gottlieb and IDF Standard methods were used to prepare the samples. Statistical analyses were conducted using Statistica 12.0.ResultsThere was a negative correlation between the content of γ-HCH and C16:1, C17:1, C18:1c9, C18:1c9c12, and ΣMUFA in cow milk fat and C13:0, C14:0, and C10:1 in mare milk fat. A positive correlation was observed between γ-HCH and C6:0 to C12:0, C14:0, C18:1t16, and ΣSFA in cow milk fat, and between this compound and C14:0iso, C16:1, C17:1, C18:1c9,11, and ΣMUFA in mare milk fat. A negative correlation between the contents of ΣDDT and C16:1, C17:1, C18:1c9,11,13 and ΣMUFA in cow milk fat and C16:0iso, C17:0, and C18:3 in mare milk fat was noted. A positive correlation was found between the contents of ΣDDT and saturated and polyunsaturated fatty acids and ΣSFA and ΣPUFA in cow milk fat, and C18:2c9c12 in mare milk fat.ConclusionThe correlation between the content of selected organochlorine compounds and the composition of fatty acids in cow and mare milk fat indicates the strong influence of these environmental pollutants on the nutritional value of milk fat.

scholarly journals Erhebungen zur Fettsäurenzusammensetzung von Rückenfett bei Thüringer Schweinen sowie zum Fett von Thüringer Knackwürsten aus dem Einzelhandel

2003 ◽  
Vol 46 (3) ◽  
pp. 257-267
Author(s):  
W. Reichardt ◽  
E. Gernand ◽  
S. Müller ◽  
H. Hartung ◽  
B. Eckert ◽  
...  
Keyword(s):  
Fatty Acids ◽  
Fatty Acid Composition ◽  
Fatty Acid ◽  
Polyunsaturated Fatty Acids ◽  
Linolenic Acid ◽  
Acid Composition ◽  
Retail Trade ◽  
Relationship Of ◽  
The Relationship

Abstract. Title of the paper: Examinations to the fatty acid composition of backfat at Thuringian pigs as well as to the fat of Thuringian cracking sausages from the retail trade The fat from the outer back bacon of Thuringian pigs (n = 751) was examined several years with regard to their fatty acid composition. The content of polyunsaturated fatty acids (PUFA) ranged at the backfat from 7.3 to 12.7% and the relationship of the n-6 and n-3 fatty acids varied from 4.4 to 11.3. PUFA contents in the backfat > 12 % were explained by high C18:2 or C18:3 contents of the food. Examination of the fatty acid composition of the fat of 21 fresh cracking sausages from the Thuringian retail trade on a random basis yielded, that the contents of PUFA and linolenic acid ranged from 6.2 to 15.8 % respectively from 0.8 to 2.0 % as well as the quotient of n-6 to n-3 fatty acids varied from 3.6 to 10.3.

Platelet Aggregation in Finnish Men and Its Relation to Fatty Acids in Platelets, Plasma and Adipose Tissue

1985 ◽  
Vol 54 (03) ◽  
pp. 563-569 ◽  
Author(s):  
M K Salo ◽  
E Vartiainen ◽  
P Puska ◽  
T Nikkari
Keyword(s):  
Fatty Acids ◽  
Adipose Tissue ◽  
Fatty Acid Composition ◽  
Fatty Acid ◽  
Platelet Aggregation ◽  
Acid Composition ◽  
Saturated Fatty Acids ◽  
Free Living ◽  
Ω3 Fatty Acids ◽  
Induced Aggregation

SummaryPlatelet aggregation and its relation to fatty acid composition of platelets, plasma and adipose tissue was determined in 196 randomly selected, free-living, 40-49-year-old men in two regions of Finland (east and southwest) with a nearly twofold difference in the IHD rate.There were no significant east-southwest differences in platelet aggregation induced with ADP, thrombin or epinephrine. ADP-induced platelet secondary aggregation showed significant negative associations with all C20-C22 ω3-fatty acids in platelets (r = -0.26 - -0.40) and with the platelet 20: 5ω3/20: 4ω 6 and ω3/ ω6 ratios, but significant positive correlations with the contents of 18:2 in adipose tissue (r = 0.20) and plasma triglycerides (TG) (r = 0.29). Epinephrine-induced aggregation correlated negatively with 20: 5ω 3 in plasma cholesteryl esters (CE) (r = -0.23) and TG (r = -0.29), and positively with the total percentage of saturated fatty acids in platelets (r = 0.33), but had no significant correlations with any of the ω6-fatty acids. Thrombin-induced aggregation correlated negatively with the ω3/6ω ratio in adipose tissue (r = -0.25) and the 20: 3ω6/20: 4ω 6 ratio in plasma CE (r = -0.27) and free fatty acids (FFA) (r = -0.23), and positively with adipose tissue 18:2 (r = 0.23) and 20:4ω6 (r = 0.22) in plasma phospholipids (PL).The percentages of prostanoid precursors in platelet lipids, i. e. 20: 3ω 6, 20: 4ω 6 and 20 :5ω 3, correlated best with the same fatty acids in plasma CE (r = 0.32 - 0.77) and PL (r = 0.28 - 0.74). Platelet 20: 5ω 3 had highly significant negative correlations with the percentage of 18:2 in adipose tissue and all plasma lipid fractions (r = -0.35 - -0.44).These results suggest that, among a free-living population, relatively small changes in the fatty acid composition of plasma and platelets may be reflected in significant differences in platelet aggregation, and that an increase in linoleate-rich vegetable fat in the diet may not affect platelet function favourably unless it is accompanied by an adequate supply of ω3 fatty acids.

scholarly journals A conjunction of sn-2 fatty acids and overall fatty acid composition combined with chemometric techniques increase the effectiveness of lard detection in fish feed

2021 ◽  
pp. 104308
Author(s):  
Mohamed Haniff Hanafy Idris ◽  
Yanty Noorzianna Manaf ◽  
Mohd Nasir Mohd Desa ◽  
Amalia Mohd Hashim ◽  
Muhamad Shirwan Abdullah Sani ◽  
...  
Keyword(s):  
Fatty Acids ◽  
Fatty Acid Composition ◽  
Fatty Acid ◽  
Acid Composition ◽  
Fish Feed ◽  
Chemometric Techniques

scholarly journals Effect of Nitrogen Fertilisation and Inoculation with Bradyrhizobium japonicum on the Fatty Acid Profile of Soybean (Glycine max (L.) Merrill) Seeds

Agronomy ◽  
2021 ◽  
Vol 11 (5) ◽  
pp. 941
Author(s):  
Ewa Szpunar-Krok ◽  
Anna Wondołowska-Grabowska ◽  
Dorota Bobrecka-Jamro ◽  
Marta Jańczak-Pieniążek ◽  
Andrzej Kotecki ◽  
...  
Keyword(s):  
Fatty Acids ◽  
Fatty Acid Composition ◽  
Fatty Acid ◽  
Acid Composition ◽  
Bradyrhizobium Japonicum ◽  
Field Experiments ◽  
Fatty Acid Content ◽  
Soybean Seeds ◽  
Oilseed Crop ◽  
Soybean Cultivars

Soybean is a valuable protein and oilseed crop ranked among the most significant of the major crops. Field experiments were carried out in 2016–2019 in South-East Poland. The influence of soybean cultivars (Aldana, Annushka), nitrogen fertilizer (0, 30, 60 kg∙ha−1 N) and inoculation with B. japonicum (control, HiStick® Soy, Nitragina) on the content of fatty acids (FA) in soybean seeds was investigated in a three-factorial experiment. This study confirms the genetic determinants of fatty acid composition in soybean seeds and their differential accumulation levels for C16:0, C16:1, C18:1n9, C18:2, C18:3, and C20:0 as well saturated (SFA), monounsaturated (MUFA), and polyunsaturated (PUFA) fatty acids. Increasing the rate from 30 to 60 kg ha−1 N did not produce the expected changes, suggesting the use of only a “starter” rate of 30 kg ha−1 N. Inoculation of soybean seeds with a strain of Bradyrhizobium japonicum (HiStick® Soy, BASF, Littlehampton, UK and Nitragina, Institute of Soil Science and Plant Cultivation–State Research Institute, Puławy, Poland) is recommended as it will cause a decrease in SFA and C16:0 acid levels. This is considered nutritionally beneficial as its contribution to total fatty acids determines the hypercholesterolemic index, and it is the third most accumulated fatty acid in soybean seeds. The interaction of cultivars and inoculation formulation on fatty acid content of soybean seeds was demonstrated. An increase in the value of C16:0 content resulted in a decrease in the accumulation of C18:1, C18:2, and C18:3 acids. The content of each decreased by almost one unit for every 1% increase in C16:0 content. The dominant effect of weather conditions on the FA profile and C18:2n6/C18:3n3 ratio was demonstrated. This suggests a need for further evaluation of the genetic progress of soybean cultivars with respect to fatty acid composition and content under varying habitat conditions.

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