scholarly journals Environmental factors regulate the fatty acid content of primary producers and consumers in a freshwater pond in a warming world

2021 ◽  
Author(s):  
Tarn Preet Parmar
Keyword(s):  
Fatty Acids ◽  
Fatty Acid ◽  
Abiotic Factors ◽  
Freshwater Ecosystems ◽  
Artificial Substrates ◽  
Separate Experiment ◽  
Piping System ◽  
Pufa Content ◽  
Warming World ◽  
The Impact

Examining the impact of abiotic factors on the fatty acid profile of freshwater organisms is an important step in predicting the potential effects of climate change. I designed and deployed a heating system to manipulate the water temperature of a large mesocosm (>300,000 L) within a pond to simulate future predictions. Heating was observed near the piping system but not throughout the water column. In a separate experiment, the seasonal and depth-related variance in biomass and polyunsaturated fatty acids (PUFA) content of aquatic biofilm, grown on artificial substrates (unglazed ceramic tiles) was examined. Although summer biofilm typically had higher biomass and higher PUFA yield, fall biofilm typically contained higher PUFA content (standardized for biomass). Similarly, deeper biofilm accumulated higher organic matter but contained lower standardized PUFA content. These results suggest that abiotic factors may play a key role in determining the availability of nutritionally-important fatty acids in freshwater ecosystems.

scholarly journals Environmental factors regulate the fatty acid content of primary producers and consumers in a freshwater pond in a warming world

2021 ◽  
Author(s):  
Tarn Preet Parmar
Keyword(s):  
Fatty Acids ◽  
Fatty Acid ◽  
Abiotic Factors ◽  
Freshwater Ecosystems ◽  
Artificial Substrates ◽  
Separate Experiment ◽  
Piping System ◽  
Pufa Content ◽  
Warming World ◽  
The Impact

Examining the impact of abiotic factors on the fatty acid profile of freshwater organisms is an important step in predicting the potential effects of climate change. I designed and deployed a heating system to manipulate the water temperature of a large mesocosm (>300,000 L) within a pond to simulate future predictions. Heating was observed near the piping system but not throughout the water column. In a separate experiment, the seasonal and depth-related variance in biomass and polyunsaturated fatty acids (PUFA) content of aquatic biofilm, grown on artificial substrates (unglazed ceramic tiles) was examined. Although summer biofilm typically had higher biomass and higher PUFA yield, fall biofilm typically contained higher PUFA content (standardized for biomass). Similarly, deeper biofilm accumulated higher organic matter but contained lower standardized PUFA content. These results suggest that abiotic factors may play a key role in determining the availability of nutritionally-important fatty acids in freshwater ecosystems.

scholarly journals The Evaluation of Fatty Acid Profile in the Diet of Patients in Psycho-neurological Hospitals

2020 ◽  
Vol 44 (339) ◽  
pp. 27-31
Author(s):  
Ilze Beitane ◽  
Alla Marisheva
Keyword(s):  
Mental Health ◽  
Fatty Acids ◽  
Fatty Acid ◽  
Fatty Acid Profile ◽  
Trans Fatty Acids ◽  
Neurological Diseases ◽  
Saturated Fatty Acids ◽  
Pufa Content ◽  
Unsaturated Fat ◽  
The Impact

AbstractThere is a strong correlation between diet and mental health, and malnutrition can contribute to the development of various psycho-neurological diseases. Fatty acid profile plays an important role in the treatment of psycho-neurological diseases; therefore, the aim of the current study was to evaluate fatty acid profile in the diet of patients in three Latvian psycho-neurological hospitals. Latvian psycho-neurological hospitals submitted a detailed one-week menu. The information in the menus was processed using the Fineli program. Each menu identified the composition of fatty acids.The average fat concentration in different hospital menus ranged from 74.8 g to 96.1 g per day, where the concentration of saturated fatty acids ranged from 37.5 g to 47.7 g per day and the unsaturated fat concentration ranged from 35.9 g to 47 g per day. The n-3 PUFA content was consistent with the recommendations of a healthy individual, but it did not meet the needs of patients in a psycho-neurological hospital. The total eicosapentaenoic acid and docosahexaenoic acid concentration in the hospital menus ranged from 0.03 to 0.13 g, which was significantly lower than recommended, whereas LA and ALA concentration in hospital menus is close to optimal. The trans-fatty acids concentration in hospital menus did not exceed 2.5 g per day, with the exception of one day in hospital No. 2.The impact of diet on the treatment of psycho-neurological diseases in Latvian psycho-neurological hospitals has not been sufficiently assessed.

scholarly journals The Impact of Water and Ethanolic Extracts of Propolis on Fatty Acid Changes of Sardine Fillets

2020 ◽  
Vol 8 (6) ◽  
pp. 1418-1425
Author(s):  
Aykut Burgut
Keyword(s):  
Fatty Acids ◽  
Fatty Acid ◽  
Honey Bees ◽  
Palmitoleic Acid ◽  
Positive Impact ◽  
Antioxidant Properties ◽  
Ethanolic Extract ◽  
Pufa Content ◽  
Ethanolic Extract Of Propolis ◽  
The Impact

The polyunsaturated fatty acids (PUFA) of lipids in muscle of sardine were known as unstable to oxidation. Propolis is a natural compounds produced by honey bees from substances collected from parts of plants, buds, and exudates. Nowadays, the particular attention has been attributed to propolis underlying their antioxidant properties due to the presence of the flavonoids, phenolic acids, and ethers. The impact of water and ethanolic extract of propolis at doses of 0.4 and 0.8% on fatty acid changes of vacuum packaged sardine fillets were investigated during chill storage. The main fatty acids in sardine fillets were palmitic acid (C16:0), palmitoleic acid (C16:1), myristic acid (C14:0), eicosapentaenoic acid (EPA, C20:5n3) and docosahexaenoic acid (DHA, C22:6 n3), respectively. There was no significant differences in EPA and DHA between control and treated groups during storage apart from 4 and 11th day. Initial n6/n3 ratio in sardine fillet was 0.17. Group treated with 0.4 propolis ethanolic extract comprised lower n6/n3 ratio at 4, 11 and 13th days than that of other groups. Although the effects of propolis extracts on fatty acid composition of fish were variable, application of propolis ethanolic and water extracts on fish fillets at doses of 0.8% had a positive impact due to lead a better oxidative stability of PUFA content.

scholarly journals Salmonids as Natural Functional Food Rich in Omega-3 PUFA

2021 ◽  
Vol 11 (5) ◽  
pp. 2409
Author(s):  
Wojciech Kolanowski
Keyword(s):  
Fatty Acids ◽  
Fatty Acid ◽  
Functional Food ◽  
Fat Content ◽  
Salmonid Fish ◽  
Omega 3 ◽  
Pufa Content ◽  
Human Diet ◽  
Fish Fillets ◽  
Food Market

Salmonids are valuable fish in the human diet due to their high content of bioactive omega-3 very long-chain polyunsaturated fatty acid (VLC PUFA). The aim of this study was to assess the omega-3 VLC PUFA content in selected salmonid fish present on the food market regarding whether they were farm-raised or wild. It was assumed that farm-raised fish, by eating well-balanced feed enriched with omega-3 PUFA, might contain omega-3 VLC PUFA in levels similar to that of wild fish. Fat content, fatty acid composition and omega-3 VLC PUFA content in fish fillets were measured. Farm-raised salmon from Norway, wild Baltic salmon, farm-raised rainbow trout and brown trout were bought from a food market whereas wild trout (rainbow and brown) were caught alive. The fat content in fish ranged from 3.3 to 8.0 g/100 g of fillet. It was confirmed that although wild salmonid fish contain 10–25% more omega-3 VLC PUFA in lipid fraction, the farm-raised ones, due to the 60–100% higher fat content, are an equally rich source of these desirable fatty acids in the human diet. One serving (130 g) of salmonid fish fillets might provide a significant dose of omega-3 VLC PUFA, from 1.2 to 2.5 g. Thus, due to very high content of bioactive fatty acids eicosapentaenoic (EPA), docosapentaenoic (DPA) and docosahexaenoic (DHA) in their meat, salmonid fish currently present on the food market, both sea and freshwater as well as wild and farm-raised, should be considered as natural functional food.

scholarly journals Stable Isotope Labeling Highlights Enhanced Fatty Acid and Lipid Metabolism in Human Acute Myeloid Leukemia

2018 ◽  
Vol 19 (11) ◽  
pp. 3325 ◽  
Author(s):  
Lucille Stuani ◽  
Fabien Riols ◽  
Pierre Millard ◽  
Marie Sabatier ◽  
Aurélie Batut ◽  
...  
Keyword(s):  
Fatty Acids ◽  
Acute Myeloid Leukemia ◽  
Fatty Acid ◽  
Lipid Metabolism ◽  
Myeloid Leukemia ◽  
Metabolic Reprogramming ◽  
Frequent Relapses ◽  
The Impact ◽  
Mutant Cells ◽  
Acute Myeloid

Background: In Acute Myeloid Leukemia (AML), a complete response to chemotherapy is usually obtained after conventional chemotherapy but overall patient survival is poor due to highly frequent relapses. As opposed to chronic myeloid leukemia, B lymphoma or multiple myeloma, AML is one of the rare malignant hemopathies the therapy of which has not significantly improved during the past 30 years despite intense research efforts. One promising approach is to determine metabolic dependencies in AML cells. Moreover, two key metabolic enzymes, isocitrate dehydrogenases (IDH1/2), are mutated in more than 15% of AML patient, reinforcing the interest in studying metabolic reprogramming, in particular in this subgroup of patients. Methods: Using a multi-omics approach combining proteomics, lipidomics, and isotopic profiling of [U-13C] glucose and [U-13C] glutamine cultures with more classical biochemical analyses, we studied the impact of the IDH1 R132H mutation in AML cells on lipid biosynthesis. Results: Global proteomic and lipidomic approaches showed a dysregulation of lipid metabolism, especially an increase of phosphatidylinositol, sphingolipids (especially few species of ceramide, sphingosine, and sphinganine), free cholesterol and monounsaturated fatty acids in IDH1 mutant cells. Isotopic profiling of fatty acids revealed that higher lipid anabolism in IDH1 mutant cells corroborated with an increase in lipogenesis fluxes. Conclusions: This integrative approach was efficient to gain insight into metabolism and dynamics of lipid species in leukemic cells. Therefore, we have determined that lipid anabolism is strongly reprogrammed in IDH1 mutant AML cells with a crucial dysregulation of fatty acid metabolism and fluxes, both being mediated by 2-HG (2-Hydroxyglutarate) production.

scholarly journals Impact assessment of the TFA regulation on fatty acid composition of foods in Hungary

2020 ◽  
Vol 30 (Supplement_5) ◽  
Author(s):  
A Varga ◽  
E Sarkadi Nagy ◽  
L Zámbó ◽  
É Illés ◽  
M Bakacs ◽  
...  
Keyword(s):  
Fatty Acids ◽  
Fatty Acid ◽  
Trans Fatty Acids ◽  
Saturated Fat ◽  
Portion Size ◽  
World Health ◽  
Food Sources ◽  
Increased Risk ◽  
Total Fat ◽  
The Impact

Abstract Trans fatty acids are formed during the industrial processing of food, and are proven to be harmful for the human body. They have been associated with increased risk of cardiovascular disease, abdominal obesity, diabetes, and certain types of cancer. Decree 71/2013. (XI. 20.) of the Ministry of Human Capacities, which has been in force since 2014, defines the highest permitted amount of trans fats in food products placed on the market in Hungary. The impact of the decree on the industrially produced trans fatty acids (iTFA) availability and population intake was assessed in 2017. Results demonstrated that iTFA were replaced by other fatty acids due to the legislation. In 2019, we investigated food groups which had high measured TFA content before the regulation entered into force and compared the total fat and fatty acid profiles to the same brand or similar products being on the market afterwards. In collaboration with the World Health Organization, this was the first assessment to determine to which extent manufacturers increased saturated fat (SFA) content of foodstuffs to reduce iTFA content. In those product groups, which were identified as significant food sources of iTFA before introducing the regulation (biscuits, coffee creamers and flavorings, sweets, bakery products, confectionary, wafers, margarines) we found no significant changes in the total fat content, while in most foodstuffs the average proportion of SFA was higher after reformulation, as iTFA were mainly substituted with SFA in 61% of the products, with cis-MUFA in 25% and cis-PUFA in 14% of the products, respectively. Evidence from this analysis supports concerns that eliminating iTFA in certain foodstuffs leads to unwanted substitution with saturated fat, hence reducing the possible health benefits. Given the high SFA intake and the unfavourable cardiovascular statistics in Hungary, the consumption frequency and portion size control of these products are advised. Key messages Monitoring the changes of food composition is important in order to evaluate the effect of the regulation. Manufacturers should be encouraged to reduce the SFA content to a technologically feasible level.

Fatty acid profiles of intramuscular, intermuscular, external and internal fat in Polish Holstein-Friesian × Hereford bulls and steers fed grass silage-based diets supplemented with concentrates

2017 ◽  
Vol 57 (2) ◽  
pp. 371 ◽  
Author(s):  
Zofia Wielgosz-Groth ◽  
Monika Sobczuk-Szul ◽  
Zenon Nogalski ◽  
Magdalena Mochol ◽  
Cezary Purwin ◽  
...  
Keyword(s):  
Fatty Acids ◽  
Fatty Acid ◽  
Energy Requirement ◽  
Net Energy ◽  
Feeding Intensity ◽  
Fat Depots ◽  
Grass Silage ◽  
Fat Deposits ◽  
Holstein Friesian ◽  
The Impact

This paper determined the impact of gender and feeding intensity on the profile of fatty acids in different types of fat deposits. The studies were conducted with 20 young bulls and 20 steers, which were Polish Holstein-Friesian and Hereford crossbreds fattened intensively – grass silage ad libitum and concentrate covered 50% of the net energy requirement in fattened cattle or semi-intensively – concentrate covered 30% of the net energy. The fatty acid profile in intramuscular, intermuscular, external and internal fat was determined. The content of intramuscular fat was lower (P < 0.001) in the longissimus muscle in the bulls (1.74%) than in the steers (3.71%). In fat of steers, the proportion of monounsaturated fatty acids was higher whereas in fat of bulls, the content of polyunsaturated fatty acids was higher. Generally the impact of the location of fat depots on the profile of fatty acids was statistically significant (P < 0.001) but there was no effect of feeding intensity.

scholarly journals Porcine Hepatic Response to Fumonisin B1 in a Short Exposure Period: Fatty Acid Profile and Clinical Investigations

Toxins ◽  
2019 ◽  
Vol 11 (11) ◽  
pp. 655 ◽  
Author(s):  
Omeralfaroug Ali ◽  
Judit Szabó-Fodor ◽  
Hedvig Fébel ◽  
Miklós Mézes ◽  
Krisztián Balogh ◽  
...  
Keyword(s):  
Fatty Acids ◽  
Fatty Acid ◽  
Saturated Fatty Acids ◽  
Fumonisin B1 ◽  
Exposure Period ◽  
Short Exposure ◽  
Lung Edema ◽  
Fungal Culture ◽  
Arachidonic Acids ◽  
The Impact

Scarce studies have investigated the impact of fumonisin B1 (FB1) on the hepatic tissue fatty acid (FA) profile, and no study is available on piglets. A 10-day in vivo experiment was performed on seven piglets/group: control and FB1-fed animals (diet was contaminated with fungal culture: 20 mg FB1/kg diet). Independent sample t-test was carried out at p < 0.05 as the significance level. Neither growth, nor feed efficiency, was affected. The hepatic phospholipid (PL) fatty acids (FAs) were more susceptible for FB1, while triglyceride (TG) was less responsive. The impact of FB1 on hepatic PL polyunsaturated fatty acids (PUFAs) was more pronounced than on saturated fatty acids. Among all PUFAs, predominant ones in response were docosapentaenoicacid (DPA) (↓), docosahexaenoic DHA (↓) and arachidonic acids (↑). This led to a higher omega-6:omega-3 ratio, whereas a similar finding was noted in TGs. Neither total saturation (SFA) nor total monousaturation (MUFA) were affected by the FB1 administration. The liver showed an increase in malondialdehyde, as well as antioxidant capacity (reduced glutathione and glutathione peroxidase). The plasma enzymatic assessment revealed an increase in alkaline phosphatase (ALP), while alanine transaminase (ALT), aspartate transaminase (AST), lactate dehydrogenase (LDH), and gamma-glutamyltransferase (GGT) were not influenced. The microscopic sections provided evidence of vacuolar degeneration of the hepatocytes’ cytoplasm, but it was not severe. Furthermore, the lung edema was developed, while the kidney was not affected. In conclusion, regarding FB1-mediated hepatotoxicity in piglets, the potential effect of slight hepatotoxicity did not compromise growth performance, at least at the dose and exposure period applied.

Free fatty acid metabolism in aerobically fit individuals

1994 ◽  
Vol 77 (5) ◽  
pp. 2374-2379 ◽  
Author(s):  
J. Calles-Escandon ◽  
P. Driscoll
Keyword(s):  
Fatty Acids ◽  
Fatty Acid ◽  
Free Fatty Acid ◽  
Aerobic Fitness ◽  
Fat Free Mass ◽  
Acid Oxidation ◽  
Systemic Delivery ◽  
Maximal Aerobic Capacity ◽  
Fitness Level ◽  
The Impact

The impact of aerobic fitness level on the production and disposal of serum free fatty acids was investigated in 26 normal young volunteers. The fitness level was ascertained by history and confirmed by determination of maximal aerobic capacity. Energy expenditure and substrate oxidation at rest were measured with indirect calorimetry. Free fatty acid turnover was measured with an infusion of [14C]palmitic acid. All tests were done > or = 48 h after the last bout of exercise. The sedentary (SED) volunteers had higher rates of systemic delivery of fatty acids than aerobically fit (FIT) individuals (532 +/- 53.4 vs. 353 +/- 62.3 mumol/min; P = 0.05). This difference was accentuated when the values were normalized to fat-free mass (9.2 +/- 0.8 and 5.9 +/- 0.98 mumol.kg-1.min-1 for SED and FIT, respectively). Fatty acid oxidation was similar between FIT and SED volunteers in absolute numbers (209 +/- 25 vs. 202 +/- 21 mumol/min, respectively; NS) as well as when normalized to fat-free mass (3.8 +/- 0.9 vs. 3.6 +/- 1.4 mumol.kg-1.min-1, respectively; NS). In contrast, the nonoxidative disposal of serum fatty acids was higher in SED (330 +/- 46.1 mumol/min) than in FIT individuals (144 +/- 52 mumol/min; P = 0.026). Thus, the ratio of nonoxidative to oxidative disposal rates of fatty acids was higher in SED than in FIT individuals (1.65 +/- 0.29 vs. 0.75 +/- 0.17; P = 0.021). The data support the hypothesis that high aerobic fitness level is associated with a low rate of systemic delivery of fatty acids at rest. Nevertheless, subjects with high aerobic fitness levels have fat oxidation at the same rate as unfit individuals.

scholarly journals PSI-32 Impact of titrating levels of dried distillers grains with solubles as a replacement of soybean meal on Boer goat fat quality

2019 ◽  
Vol 97 (Supplement_3) ◽  
pp. 254-254
Author(s):  
Linnea Rimmer ◽  
Cassandra K Jones
Keyword(s):  
Fatty Acids ◽  
Fatty Acid ◽  
Fatty Acid Profile ◽  
Distillers Grains ◽  
Fatty Acid Profiles ◽  
Boer Goat ◽  
Distillers Grains With Solubles ◽  
Dried Distillers Grains ◽  
Fat Quality ◽  
The Impact

Abstract Due to the rising goat population in the United States, there is growing economic incentive to feed dried distillers grains with solubles (DDGS) over soybean meal (SBM). However, there is limited knowledge of how this may affect carcass composition. Therefore, the objective of this experiment was to evaluate the impact of titrating levels of DDGS as a replacement of SBM on Boer goat fatty acid profiles. Thirty-two Boer goat kids were fed isocaloric and isonitrogenous diets consisting of 0%, 33%, 66%, and 100% DDGS replacing SBM. There were no detected differences (P &gt; 0.05) in final body weight after a 47-d growth experiment. Goats were slaughtered in a commercial, USDA-inspected facility, backfat samples collected between the 12th and 13th rib, and samples analyzed for fatty acid profile via AOAC Official Method 996.06. Data were analyzed with goat as the experimental unit in a completely randomized design. Dietary treatment did not impact (P &gt; 0.05) the overall fatty acid profile or iodine value (50 to 52 points) of fat samples. This may be because fatty acids go through biohydrogenation by rumen bacteria, limiting the impact of diet on fatty acid profile. That said, increasing levels of DDGS impacted (P = 0.03) both C16:1 and C18:3 in a quadratic manner. Specifically, goats fed 0% and 100% DDGS replacing SBM had higher C16:1 than those fed intermediate levels of DDGS, while the opposite was true for C18:3. No other fatty acid was affected (P &gt; 0.05), nor were there shifts in the ratio of saturated vs. unsaturated, or the total sum of n-3 fatty acids. In summary, fatty acid profiles are not significantly impacted by increasing levels of DDGS in place of SBM, and therefore DDGS can be used in Boer goat diets without impacting fat quality.

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