scholarly journals Phosphorus reduction by sifting fish waste meal

2014 ◽  
Vol 44 (10) ◽  
pp. 1841-1844
Author(s):  
Ronaldo Lima de Lima ◽  
Dariane Beatriz Schoffen Enke ◽  
Neiva Braun ◽  
Débora Machado Fracalossi
Keyword(s):  
Fatty Acids ◽  
Total Phosphorus ◽  
Fish Meal ◽  
Animal Feed ◽  
Heart Diseases ◽  
Essential Fatty Acids ◽  
Omega 3 Fatty Acids ◽  
Omega 3 ◽  
Fish Waste ◽  
Commercial Fish

Fish meal is widely included in animal feed because it contains ideal essential amino acids profile, it is rich in energy, essential fatty acids, vitamins and minerals and with >80% apparent protein digestibility in peneid shrimp. In human nutrition, studies are investigating the inclusion of fish meal in snacks, cakes, breads and cookies, as an enrichment in calcium, phosphorus, iron, protein and, especially, omega-3 fatty acids. Omega-3 fatty acids reduces heart diseases and have antithrombotic and anti-inflammatory properties (eicosapentaenoic acid), and are essential to the formation of brain tissue and retina in infants and are important during pregnancy and lactation (docosahexaenoic acid). Fish meal produced from fish waste is rich in minerals (phosphorus), which may cause eutrophication and impair water quality in aquaculture. The aim of this study was to reduce phosphorus content from commercial fish meal produced from waste by sifting (0.60 - 1.00 - 1.18 - 1.40 - 2.36 and 3.35mm mesh sizes). Fish meal samples were collected monthly for 24 months. Proximate composition of subsamples per mesh size was compared to the unsieved sample. Results indicate that sifting through a 0.60mm sieve total phosphorus and ash contents were reduced up to 32% and 36%, respectively, further to increase protein content up to 20%. Average composition of the subsamples was 47.04% ash, 5.56% of total phosphorus and 39.45% protein, suggesting that the residue of the fractionation may be marketed as a mineral and protein supplement.

scholarly journals Improving the Cognitive Development of Children in Rural Areas as Development Tool

2021 ◽  
Author(s):  
Jacob Alhassan Hamidu ◽  
Charlisa Afua Brown ◽  
Mary Adjepong
Keyword(s):  
Fatty Acids ◽  
Cognitive Development ◽  
Rural Areas ◽  
Essential Fatty Acids ◽  
Nutritional Intervention ◽  
Omega 3 Fatty Acids ◽  
Omega 3 ◽  
Self Confidence ◽  
Alternative Sources ◽  
The Many

Good health is a crucial requirement for every child for proper growth and development. To increase their future prospects the exact nutritional intervention is needed to boost the thinking and self-confidence of children. Adequate levels of omega-3 essential fatty acids are vital for children during pregnancy, breastfeeding, and few years post-weaning. This is not just for their perfect growth but including their cognitive development. Poverty levels continue to be high in rural areas and there are nutritional interventions that can be used to reverse the trends. However, omega-3 fatty acids, known to have a greater impact on brain development are not cheap and available in forms that are accessible by the rural poor. With the many complications attached to a rural lifestyle, little is known about culturally accepted local sources of omega-3 fatty acids. Therefore, alternative sources of nutritional intervention including the provision of eggs enriched with appropriate fatty acids, which are readily available, accessible, cheaper, and culturally accepted should be explored for children.

Measurement of Organochlorines in Commercial Over-the-Counter Fish Oil Preparations: Implications for Dietary and Therapeutic Recommendations for Omega-3 Fatty Acids and a Review of the Literature

2005 ◽  
Vol 129 (1) ◽  
pp. 74-77 ◽  
Author(s):  
Stacy Foran Melanson ◽  
Elizabeth Lee Lewandrowski ◽  
James G. Flood ◽  
Kent B. Lewandrowski
Keyword(s):  
Coronary Artery Disease ◽  
Fatty Acids ◽  
Coronary Artery ◽  
Polychlorinated Biphenyls ◽  
Fish Oil ◽  
Omega 3 Fatty Acids ◽  
Omega 3 ◽  
Over The Counter ◽  
Commercial Fish ◽  
Artery Disease

Abstract Context.—The consumption of fish high in omega-3 fatty acids is advocated by the American Heart Association to decrease the risk of coronary artery disease. However, fish contain environmental toxins such as mercury, polychlorinated biphenyls, and organochlorine pesticides, which may negate the beneficial cardiovascular effects of fish meals. Toxin levels vary depending on both the fish source and the specific toxin, and neither farm-raised nor wild fish are toxin free. Fish oil supplements also prevent the progression of coronary artery disease and reduce cardiovascular mortality. However, only sparse data exist on the level of toxins in fish oil. In a previous study we showed that the amount of mercury in 5 over-the-counter brands of fish oil was negligible. Objective.—To determine the concentrations of polychlorinated biphenyls and other organochlorines in 5 over-the-counter preparations of fish oil. Design.—The contents of 5 commercial fish oil brands were sent for organochlorine analysis. Results.—The levels of polychlorinated biphenyls and organochlorines were all below the detectable limit. Conclusions.—Fish oil supplements are more healthful than the consumption of fish high in organochlorines. Fish oils provide the benefits of omega-3 fatty acids without the risk of toxicity. In addition, fish oil supplements have been helpful in a variety of diseases, including bipolar disorder and depression.

scholarly journals Quality Indicators of Snail Meat Grown in Different Conditions

2012 ◽  
Vol 6 (3-4) ◽  
Author(s):  
Drago Sando ◽  
Radoslav Grujić ◽  
Bašić Meho ◽  
Kiril Lisickov ◽  
Dragan Vujadinović
Keyword(s):  
Heavy Metals ◽  
Fatty Acids ◽  
Amino Acid ◽  
Essential Amino Acid ◽  
Essential Fatty Acids ◽  
Omega 3 Fatty Acids ◽  
Omega 3 ◽  
Human Diet ◽  
Important Place ◽  
The World

Snail meat is used daily in the human diet. Snails are used in human nutrition daily in some regions of the world. According to measurable attributes of proteins and lipids quality, snails fall into the middle category of this source of nutrients. The paper describes nutritive attributes of snail’s quality from the aspect of macro and micro nutrients. In the composition of essential amino acid leucine and lysine are dominant, and tryptophan is missing. Essential fatty acids are relatively high in snails, especially linolenic and arahidonic acid, but some polyunsaturated omega-3 fatty acids, such as EPA. Out of mineral material copper, iron and magnesium take an important place. With regard to methods of diet and residence snail meat can be loaded to certain heavy metals, residues of radioactive substances and pesticides. These are reasons to control the snails before processing in order to increase safety of the obtained product.

Beneficial Effects of Omega-3 Supplement to the Enteral Feeding in Children With Mild to Moderate Sepsis

2016 ◽  
Vol 32 (3) ◽  
pp. 212-217 ◽  
Author(s):  
Mohammed Abdul Moety Al-Biltagi ◽  
Ahmed Abd ElBasset Abo-Elezz ◽  
Maher Ahmed Abd-Elhafez ◽  
Maaly Mohamed Mabrouk ◽  
Ghada Abudelmomen Suliman
Keyword(s):  
Fatty Acids ◽  
Enteral Feeding ◽  
Essential Fatty Acids ◽  
Pediatric Intensive Care ◽  
Albumin Level ◽  
Controlled Study ◽  
Omega 3 Fatty Acids ◽  
Omega 3 ◽  
Double Blind ◽  
Acute Phase Reactants

Objective: The objective was to investigate the benefits of supplementing enteral feeding with omega-3 fatty acids in children with mild to moderate sepsis and its effects on acute-phase reactants and interleukin 6 (IL-6) level. Methods: The study was a prospective randomized, double-blind, placebo-controlled study from January 2012 to June 2014, which included 2 groups of children with mild to moderate sepsis tolerating enteral feeding. Group A included 60 children supplemented with omega-3 fatty acids, whereas group B included 60 children who received enteral feeding without omega-3 supplementation. Both groups had complete blood pictures, C-reactive protein (CRP), erythrocyte sedimentation rate (ESR), serum albumin, and IL-6 before and after 7 days from supplementation. Results: There was a significant improvement in hemoglobin percentage ( P < .0001), total white blood cell (WBC) count ( P < .0001), and platelet count ( P < .0001) and significant decrease in CRP ( P < .0001), ESR ( P < .0001), IL-6 ( P < .0001), and albumin level ( P < .001) in the supplemented group than the nonsupplemented group. The supplemented group also had a significantly shorter duration of stay in pediatric intensive care unit (PICU; P < .01) and decreased death rate than the nonsupplemented group. Conclusion: Children with mild to moderate sepsis showed significant improvement in inflammatory markers and had shorter PICU admission when enteral feeding was supplemented with omega-3 essential fatty acids.

scholarly journals Improvement of Omega-3-rich Microalgae Biomass Production to Support Qatar Food Security

2020 ◽  
Author(s):  
Maroua Cherif ◽  
Touria Bounnit ◽  
Hareb Al JAbri ◽  
Imen Saadaoui
Keyword(s):  
Fatty Acids ◽  
Food Security ◽  
Nutritional Value ◽  
Animal Feed ◽  
Biomass Productivity ◽  
Fast Growth ◽  
Stress Conditions ◽  
Omega 3 Fatty Acids ◽  
Omega 3 ◽  
Feed Production

Recently, algae have received considerable interest as one of the most promising feedstocks suitable for animal feed production due to their fast growth, less nutrient requirements and their ability to produce primary and secondary metabolites with high-added value. Different strategies were applied to improve both biomass and metabolites productivities aiming to produce highquality biomass with low cost and high nutritional value. Tetraselmis subcoliformis QUCCCM50, a local marine green alga presenting fast growth, high metabolites content and easy to harvest, was selected as a candidate for feed production. Three different stress conditions were applied to enhance its potential to produce high-value products such as Nitrogen or Phosphorus depletion and high salinity of 100ppt. An assessment of the growth properties and biomass productivity was performed during the growth. After 15 days of cultivation using tubular photobioreactors, the biomass was subjected to metabolites characterization and fatty acids methyl ester profiling. Results showed that the three stress conditions present different impacts on biomass productivity and, lipid quantity and quality. Cultivation under 100 ppt led to the highest increase in lipid content. This culture condition led to 25% increase of the omega-3 fatty acids with the appearance of the docosahexaenoic acid (DHA) and a remarkable increase of the alpha-linolenic acid, comparatively to the control. The enrichment of the Tetraselmis subcoliformis’ biomass in terms of omega-3 fatty acids enhance its nutritional value and make it very suitable for animal feed production. The optimized culture conditions obtained from the current study will be applied at large scale to enhance the quality of the biomass towards omega-3 enriched animal feed supplement production, and hence support achieving food security in the State of Qatar.

scholarly journals Omega-3 Fatty Acids versus Heavy Metals: A Quantitative Estimation of the Benefit-Risk Ratio for the Consumption of Commonly-Consumed Fish and Products in Metro Manila

KIMIKA ◽  
2016 ◽  
Vol 26 (2) ◽  
pp. 39-50 ◽  
Author(s):  
Dave P. Briones ◽  
Nancy Lazaro-Llanos
Keyword(s):  
Heavy Metals ◽  
Fatty Acids ◽  
Health Risks ◽  
Risk Ratio ◽  
Essential Fatty Acids ◽  
Skipjack Tuna ◽  
Omega 3 Fatty Acids ◽  
Omega 3 ◽  
Epa And Dha ◽  
Metro Manila

Fish and other marine products consumption is the main route of heavy metal exposure to human which poses health risks if taken in high dosage. On the other hand, the nutritional benefits of fish are mainly due to the content of high-quality protein and high content of the two kinds of omega-3 polyunsaturated fatty acids (PUFA): eicosapentaenoic acid (EPA) and docosahexaenoic acid (DHA). The study aims to assess and compare the benefit-risk ratio for the consumption of commonly-consumed fish and products in Metro Manila. Fish and product samples were analyzed for moisture, crude fat, heavy metals (As, Cd, Pb) and fatty acid profile (saturated, mono- and polyunsaturated) including omega-3 fatty acids EPA and DHA. These findings generally indicate that the consumption of fish and products studied posed no risk to human health. Essential fatty acids EPA and DHA were highest for dried anchovy, Stolephorus indicus (1.5 and 7.3mg/g sample); mussel, Mytilus smaragdinus (1.5 and 1.0mg/g sample); round scad, Decapterus macrosoma (0.9 and 3.4mg/g sample); and skipjack tuna, Auxis thazard (1.1 and 3.9mg/g sample). The hazard quotients of essential fatty acids versus heavy metals were also less than 1 except for Cd in squid (1.8), In the case of dried sardine (19.9), squid (1.8), shrimp (3.4), and skipjack tuna (1.7), these foods should be monitored regularly. In conclusion, the target hazard quotients for most of the fish and products showed values less than 1, which suggest that health risks were insignificant.

scholarly journals Enriched Marine Oil Supplements Increase Peripheral Blood Specialized Pro-Resolving Mediators Concentrations and Reprogram Host Immune Responses

2020 ◽  
Vol 126 (1) ◽  
pp. 75-90 ◽  
Author(s):  
Patricia R. Souza ◽  
Raquel M. Marques ◽  
Esteban A. Gomez ◽  
Romain A. Colas ◽  
Roberta De Matteis ◽  
...  
Keyword(s):  
Fatty Acids ◽  
Peripheral Blood ◽  
Essential Fatty Acids ◽  
Omega 3 Fatty Acids ◽  
Omega 3 ◽  
Marine Oil ◽  
Protective Actions ◽  
The Relationship ◽  
Dose Dependent Increase ◽  
Dose Dependent

Rationale: Specialized pro-resolving mediators (SPM—lipoxins, resolvins, protectins, and maresins) are produced via the enzymatic conversion of essential fatty acids, including the omega-3 fatty acids docosahexaenoic acid and n-3 docosapentaenoic acid. These mediators exert potent leukocyte directed actions and control vascular inflammation. Supplementation of animals and humans with essential fatty acids, in particular omega-3 fatty acids, exerts protective actions reducing vascular and systemic inflammation. Of note, the mechanism(s) activated by these supplements in exerting their protective actions remain poorly understood. Objective: Given that essential fatty acids are precursors in the biosynthesises of SPM, the aim of the present study was to establish the relationship between supplementation and peripheral SPM concentrations. We also investigated the relationship between changes in plasma SPM concentrations and peripheral blood platelet and leukocyte responses. Methods and Results: Healthy volunteers were enrolled in a double-blinded, placebo-controlled, crossover study, and peripheral blood was collected at baseline, 2, 4, 6, and 24 hours post administration of placebo or one of 3 doses of an enriched marine oil supplement. Assessment of plasma SPM concentrations using lipid mediator profiling demonstrated a time- and dose-dependent increase in peripheral blood SPM concentration. Supplementation also led to a regulation of peripheral blood cell responses. Here we found a dose-dependent increase in neutrophil and monocyte phagocytosis of bacteria and a decrease in the diurnal activation of leukocytes and platelets, as measured by a reduction in adhesion molecule expression. In addition, transcriptomic analysis of peripheral blood cells demonstrated a marked change in transcript levels of immune and metabolic genes 24 hours post supplementation when compared with placebo. Conclusions: Together, these findings demonstrate that supplementation with an enriched marine oil leads to an increase in peripheral blood SPM concentrations and reprograms peripheral blood cells, indicating a role for SPM in mediating the immune-directed actions of this supplement. Clinical Trial Registration: URL: http://www.clinicaltrials.gov . Unique identifier: NCT03347006.

scholarly journals Essential Fatty Acids and the Brain

2003 ◽  
Vol 48 (3) ◽  
pp. 195-203 ◽  
Author(s):  
Marianne Haag
Keyword(s):  
Fatty Acids ◽  
Fatty Acid Composition ◽  
Essential Fatty Acids ◽  
Omega 3 Fatty Acids ◽  
Omega 3 ◽  
Membrane Phospholipids ◽  
Membrane Function ◽  
3 Dimensional ◽  
Omega 6

Objective: To review the role of essential fatty acids in brain membrane function and in the genesis of psychiatric disease. Method: Medline databases were searched for published articles with links among the following key words: essential fatty acids, omega-3 fatty acids, docosahexanoic acid, eicosapentanoic acid, arachidonic acid, neurotransmission, phospholipase A2, depression, schizophrenia, mental performance, attention-deficit hyperactivity disorder, and Alzheimer's disease. Biochemistry textbooks were consulted on the role of fatty acids in membrane function, neurotransmission, and eicosanoid formation. The 3-dimensional structures of fatty acids were obtained from the Web site of the Biochemistry Department, University of Arizona (2001). Results: The fatty acid composition of neuronal cell membrane phospholipids reflects their intake in the diet. The degree of a fatty acid's desaturation determines its 3-dimensional structure and, thus, membrane fluidity and function. The ratio between omega-3 and omega-6 polyunsaturated fatty acids (PUFAs), in particular, influences various aspects of serotoninergic and catecholaminergic neurotransmission, as shown by studies in animal models. Phospholipase A2 (PLA2) hydrolyzes fatty acids from membrane phospholipids: liberated omega-6 PUFAs are metabolized to prostaglandins with a higher inflammatory potential, compared with those generated from the omega-3 family. Thus the activity of PLA2 coupled with membrane fatty acid composition may play a central role in the development of neuronal dysfunction. Intervention trials in human subjects show that omega-3 fatty acids have possible positive effects in the treatment of various psychiatric disorders, but more data are needed to make conclusive directives in this regard. Conclusion: The ratio of membrane omega-3 to omega-6 PUFAs can be modulated by dietary intake. This ratio influences neurotransmission and prostaglandin formation, processes that are vital in the maintenance of normal brain function.

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