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Linoleic acid nutrition

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https://www.readbyqxmd.com/read/28823016/de-novo-synthesis-of-linoleic-acid-in-multiple-collembola-species
#1
Miriama Malcicka, Joachim Ruther, Jacintha Ellers
Many ecological interactions in communities take place between consumers and the organisms they feed on. Continuous surplus of specific nutritional compounds in the diet may lead to evolutionary changes in the metabolic capacity of the consumer, leaving the biosynthesis of such compounds prone to genetic decay and render organisms auxotrophic. A nutrient that is essential to many organisms is the unsaturated fatty acid, linoleic acid (LA; 18:2n-6), which is important in the maintenance of cell membrane fluidity and as a precursor for signaling molecules...
August 19, 2017: Journal of Chemical Ecology
https://www.readbyqxmd.com/read/28815782/influence-of-conjugated-linoleic-acids-and-vitamin-e-on-milk-fatty-acid-composition-and-concentrations-of-vitamin-a-and-%C3%AE-tocopherol-in-blood-and-milk-of-dairy-cows
#2
S Schäfers, U Meyer, D von Soosten, L Hüther, C Drong, K Eder, E Most, A Tröscher, W Pelletier, A Zeyner, S Dänicke
The objective of this trial was to investigate the influences of conjugated linoleic acid (CLA) and vitamin E (Vit. E) and their interactions on fatty acid composition and vitamins in milk (α-tocopherol, retinol and β-carotene) as well as on α-tocopherol in blood of pluriparous cows from week 6 ante partum until week 10 post-partum (p.p.). We assigned 59 pluriparous German Holstein cows to four treatment groups with the treatment factors CLA and Vit. E at two levels in a 2 × 2 factorial design. Milk fatty acid composition and milk vitamins were analysed on lactation days 7 and 28...
August 16, 2017: Journal of Animal Physiology and Animal Nutrition
https://www.readbyqxmd.com/read/28804001/production-of-trans-and-conjugated-fatty-acids-in-dairy-ruminants-and-their-putative-effects-on-human-health-a-review
#3
REVIEW
Anne Ferlay, Laurence Bernard, Annabelle Meynadier, Corinne Malpuech-Brugère
Consumption of milk and dairy products is important in Western industrialised countries. Fat content is an important constituent contributing to the nutritional quality of milk and dairy products. In order to improve the health of consumers, there is high interest in improving their fatty acid (FA) composition, which depends principally on rumen and mammary metabolism. This paper reviews the lipid metabolism in ruminants, with a particular focus on the production of trans and conjugated linoleic acids (CLA) and conjugated linolenic acids (CLnA) in the rumen...
August 10, 2017: Biochimie
https://www.readbyqxmd.com/read/28783061/impact-of-biological-feedback-and-incentives-on-blood-fatty-acid-concentrations-including-omega-3-index-in-an-employer-based-wellness-program
#4
Michael I McBurney, Julia K Bird
Eicosapentaenoic acid (EPA, C20:5n-3) and docosahexaenoic acid (DHA, C22:6n-3) are important fatty acids for the retina and brain. More than 95% of Americans have suboptimal EPA + DHA blood concentrations. This cross-sectional employer-based study assessed whole blood fatty acid levels of volunteers participating in an onsite wellness biometric screening program and was designed to determine if an incentive, a $5 coupon for a 90-day supply of fish oil supplement typically costing $18-30, stimulated incremental dietary behavior change relative to nutritional status assessment alone to increase EPA + DHA concentrations...
August 5, 2017: Nutrients
https://www.readbyqxmd.com/read/28777980/fatty-acid-profiling-and-multivariate-analysis-in-the-genus-leucas-reveals-its-nutritional-pharmaceutical-and-chemotaxonomic-significance
#5
Ashish Kumar Choudhary, P Sunojkumar, Girish Mishra
Genus Leucas with about 41 species found in India, is an Asian genus with separation from its close relatives in Africa based on phylogenetic evidence. Present study represents the only comprehensive phytochemical investigation on this genus. We have analyzed the seed fatty acid compositions of 26 species and five varieties of Leucas for nutritional, pharmaceutical and chemotaxonomic perspectives. The fatty acids and their composition in seeds of Leucas species, collected from different geographical regions in India, were analyzed by gas chromatography and mass spectrometry...
August 1, 2017: Phytochemistry
https://www.readbyqxmd.com/read/28758957/transcriptome-analysis-reveals-increases-in-visceral-lipogenesis-and-storage-and-activation-of-the-antigen-processing-and-presentation-pathway-during-the-mouth-opening-stage-in-zebrafish-larvae
#6
Hao Xu, Enxiu Liu, Yun Li, Xiaojie Li, Chenyu Ding
The larval phase of the fish life cycle has the highest mortality, particularly during the transition from endogenous to exogenous feeding. However, the transcriptional events underlying these processes have not been fully characterized. To understand the molecular mechanisms underlying mouth-opening acclimation, RNA-seq was used to investigate the transcriptional profiles of the endogenous feeding, mixed feeding and exogenous feeding stages of zebrafish larvae. Differential expression analysis showed 2172 up-regulated and 2313 down-regulated genes during this stage...
July 31, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28740349/functional-lipidomics-in-patients-on-home-parenteral-nutrition-effect-of-lipid-emulsions
#7
Loris Pironi, Mariacristina Guidetti, Ornella Verrastro, Claudia Iacona, Federica Agostini, Caterina Pazzeschi, Anna Simona Sasdelli, Michele Melchiorre, Carla Ferreri
AIM: To investigate the fatty acid-based functional lipidomics of patients on long-term home parenteral nutrition receiving different intravenous lipid emulsions. METHODS: A cross-sectional comparative study was carried out on 3 groups of adults on home parenteral nutrition (HPN), receiving an HPN admixture containing an olive-soybean oil-based intravenous lipid emulsion (IVLE) (OO-IVLE; n = 15), a soybean- medium-chain triacylglycerol-olive-fish oil-based IVLE (SMOF-IVLE; n = 8) or HPN without IVLE (No-IVLE; n = 8) and 42 healthy controls (HCs)...
July 7, 2017: World Journal of Gastroenterology: WJG
https://www.readbyqxmd.com/read/28720932/investigating-the-amount-of-tfas-clas-and-%C3%AF-6-%C3%AF-3-of-various-brands-of-corn-oil-heated-at-different-time-temperature-treatments
#8
Fan He, Qin Guo, Fengying Gu, Yiming Ha, Wei Gong, Feng Wang
A qualitative and quantitative analysis of trans fatty acids (TFAs), conjugated linoleic acids (CLAs) and linoleic acid/α-linolenic acid (ω6/ω3) in eleven different brands of fresh and heated corn oil was investigated. Corn oil was subjected to thermal treatment at 180, 210 and 230 °C for 4, 8 and 12 h. The kinds of fatty acids were almost the same in all eleven brands of corn oil, but there were differences in the quantities of TFAs, CLAs and ω6/ω3 among the brands. The formation of TFAs in different brands of corn oil increased slowly at 180 °C and rapidly at 230 °C with the maximum increase of 28 and 374%, respectively...
June 2017: Journal of Food Science and Technology
https://www.readbyqxmd.com/read/28718789/flavonoid-and-antioxidant-capacity-of-propolis-prediction-using-near-infrared-spectroscopy
#9
Eddy Betances-Salcedo, Isabel Revilla, Ana M Vivar-Quintana, M Inmaculada González-Martín
The use of propolis as a dietary supplement or as an ingredient in different food products is increasing, due to its antioxidant and bactericidal properties. These nutritional properties directly depend on its phenolic composition. For this reason, this study analysed the total contents of flavones and flavonols, flavanones and dihydroflavonols, and the antioxidant capacity by using the methods of ABTS and linoleic acid/β-carotene in 99 samples of propolis from Spain and Chile. A rapid method was developed for quantifying these parameters in raw propolis using near infrared (NIR) spectroscopy with a remote reflectance fibre-optic probe applied directly to the ground-up sample...
July 18, 2017: Sensors
https://www.readbyqxmd.com/read/28692324/effect-of-goat-s-milk-supplementation-with-tamr-on-free-fatty-acids-antioxidant-activity-and-probiotic-bacteria-of-bio-rayeb-milk
#10
Mohamed N F Hamad, Magdy M Ismail, Esraa M Elraghy
Tamr (dried dates) has a high sugar content, essential vitamins, and high nutrient density. Dairy products still are the most typical carriers of probiotic bacteria. Six treatments of bio-rayeb milk were manufactured from goat's milk fortified with 5%, 10%, 15%, 20%, and 25% Tamr using ABT-5 culture. Rayeb milk containing tamr had lower pH and fat and higher carbohydrate, total solids, dietary fiber, ash, total protein, water-soluble nitrogen, and total volatile fatty acids. Mixing tamr with bio-rayeb milk increased nutritional value by decreasing saturated fatty acids and increasing unsaturated fatty acids, oleic, linoleic, α-linolenic acids, and antioxidant activity values...
July 10, 2017: Journal of Dietary Supplements
https://www.readbyqxmd.com/read/28688615/innovative-dairy-cow-management-to-improve-resistance-to-metabolic-and-infectious-diseases-during-the-transition-period
#11
REVIEW
P Lacasse, N Vanacker, S Ollier, C Ster
The incidence of metabolic and infectious diseases varies greatly during the lactation cycle. Most new cases of clinical mastitis appear at the beginning of lactation, and the incidence increases with the level of milk production. In addition to mastitis, many other infectious diseases become clinically apparent during the first 2weeks of lactation. During this time, cows are in a negative energy balance and must mobilize body reserves to balance the deficit between food energy intake and energy required for milk production...
June 27, 2017: Research in Veterinary Science
https://www.readbyqxmd.com/read/28657495/in-silico-structural-studies-and-molecular-docking-analysis-of-delta6-desaturase-in-hufa-biosynthetic-pathway
#12
Suvra Roy, Hirak Jyoti Chakraborty, Vikash Kumar, B K Behera, R S Rana, Gireesh Babu
Fish are an important source of highly unsaturated fatty acids (HUFA) such as eicosapentaenoic acid EPA (20:5 n-3) and docosahexaenoic acid DHA (22:6 n-3) and play a significant role in human nutrition. The fatty acyl delta6-desaturase (Δ6 desaturase) is a rate-limiting enzyme in the biosynthetic pathway of highly unsaturated fatty acids (HUFA) that converts polyunsaturated fatty acids (PUFA) such as linoleic (18:2n-6) and α-linolenic (18:3n-3) acids into HUFA. In this study, fatty acyl Δ6 desaturase was identified from pangasius (Pangasianodon hypophthalmus) and further analyzed for sequenced-based characterization and 3D structural conformation...
June 28, 2017: Animal Biotechnology
https://www.readbyqxmd.com/read/28655313/lipids-characterization-of-ultrasound-and-microwave-processed-germinated-sorghum
#13
Sadia Hassan, Muhammad Imran, Nazir Ahmad, Muhammad Kamran Khan
BACKGROUND: Cereal crops and oilseeds provide diverse pool of fatty acids with characteristic properties. Sorghum (Sorghum bicolor (L.) Moench) provides the staple food with serving as main source of energy and protein. Germination of sorghum generally increases the nutritive value of seeds and the effects of germination on lipids composition of seeds vary greatly with processing conditions. Therefore, the current study was conducted to compare the effect of emerging processing techniques such as ultrasound (US) and microwave (MW) on fatty acids composition and oil yield of sorghum seeds before and after germination...
June 27, 2017: Lipids in Health and Disease
https://www.readbyqxmd.com/read/28644971/simultaneous-silencing-of-ghfad2-1-and-ghfatb-enhances-the-quality-of-cottonseed-oil-with-high-oleic-acid
#14
Feng Liu, Yan-Peng Zhao, Hua-Guo Zhu, Qian-Hao Zhu, Jie Sun
Cottonseed oil has become an important source of edible oil due to its significant cost advantage. However, there is a growing concern over its fatty acid composition and nutritional value. In Gossypium hirsutum, GhFAD2-1 and GhFATB encoding the microsomal oleate desaturase and palmitoyl-acyl carrier protein thioesterase, respectively, play critical roles in regulating the proportions of saturated and polyunsaturated fatty acids in cottonseed lipids. In this study, RNAi technology was used to simultaneously inhibit the expression levels of GhFAD2-1 and GhFATB to improve the quality of cottonseed oil by increasing oleic acid content...
June 15, 2017: Journal of Plant Physiology
https://www.readbyqxmd.com/read/28637506/improved-%C3%AE-linolenic-acid-production-in-mucor-circinelloides-by-homologous-overexpressing-of-delta-12-and-delta-6-desaturases
#15
Yao Zhang, Xiao Luan, Huaiyuan Zhang, Victoriano Garre, Yuanda Song, Colin Ratledge
BACKGROUND: γ-Linolenic acid (GLA) is important because of its nutritional value and medicinal applications. Although the biosynthetic pathways of some plant and microbial GLA have been deciphered, current understanding of the correlation between desaturases and GLA synthesis in oleaginous fungi is incomplete. In previous work, we found that a large amount of oleic acid (OA) had not been converted to linoleic acid (LA) or GLA in Mucor circinelloides CBS 277.49, which may be due to inadequate activities of the delta-12 or delta-6 desaturases, and thus leading to the accumulation of OA and LA...
June 21, 2017: Microbial Cell Factories
https://www.readbyqxmd.com/read/28624283/effect-of-pasture-versus-indoor-feeding-systems-on-quality-characteristics-nutritional-composition-and-sensory-and-volatile-properties-of-full-fat-cheddar-cheese
#16
Tom F O'Callaghan, David T Mannion, Deirdre Hennessy, Stephen McAuliffe, Maurice G O'Sullivan, Natasha Leeuwendaal, Tom P Beresford, Pat Dillon, Kieran N Kilcawley, Jeremiah J Sheehan, R Paul Ross, Catherine Stanton
The purpose of this study was to investigate the effects of pasture-based versus indoor total mixed ration (TMR) feeding systems on the chemical composition, quality characteristics, and sensory properties of full fat Cheddar cheeses. Fifty-four multiparous and primiparous Friesian cows were divided into 3 groups (n = 18) for an entire lactation. Group 1 was housed indoors and fed a TMR diet of grass silage, maize silage, and concentrates; group 2 was maintained outdoors on perennial ryegrass only pasture (GRS); and group 3 was maintained outdoors on perennial ryegrass/white clover pasture (CLV)...
June 14, 2017: Journal of Dairy Science
https://www.readbyqxmd.com/read/28614390/fatty-acid-profiles-of-five-farmed-brazilian-freshwater-fish-species-from-different-families
#17
Bruna Leal Rodrigues, Anna Carolina Vilhena da Cruz Silva Canto, Marion Pereira da Costa, Flávio Alves da Silva, Eliane Teixeira Mársico, Carlos Adam Conte-Junior
The proximate composition and fatty acid (FA) profiles of five Brazilian freshwater fish species, namely Brycon cephalus (BC), Cichla ocellaris (CO), Prochilodus lineatus (PL), Leporinus friderici (LF) and Pseudoplatystoma corruscans (PCO), were investigated. CO and LF exhibited the highest (p < 0.05) moisture content, as well as one of the lowest (p < 0.05) lipid values, whereas BC presented the lowest (p < 0.05) moisture and, alongside PL, the highest (p < 0.05) lipid content. The predominant FAs in the evaluated fish species were palmitic, oleic, linoleic and docosahexaenoic acids...
2017: PloS One
https://www.readbyqxmd.com/read/28589948/associations-between-fatty-acids-and-low-grade-inflammation-in-children-from-the-lisaplus-birth-cohort-study
#18
C Harris, H Demmelmair, A von Berg, I Lehmann, C Flexeder, B Koletzko, J Heinrich, M Standl
BACKGROUND/OBJECTIVES: Assessing fatty acid (FA) composition in relation to inflammatory markers can shed light on the role of different FA and their metabolism in low-grade inflammation. Existing exploratory studies in children are scarce, and findings inconsistent. We hence aim to analyse associations of FA with common inflammatory markers, high-sensitivity C-reactive protein (hs-CRP) and interleukin-6 (IL-6), in 10-year-old children. SUBJECTS/METHODS: Complete data were available for 958 participants from the 10-year follow-up of the LISAplus (Influence of Lifestyle-Related Factors on the Immune System and the Development of Allergies in Childhood plus the Influence of Traffic Emissions and Genetics) birth cohort study...
June 7, 2017: European Journal of Clinical Nutrition
https://www.readbyqxmd.com/read/28551180/effect-of-dietary-quebracho-tannin-extract-on-milk-fatty-acid-composition-in-cows
#19
Anika Henke, Edwin Westreicher-Kristen, Joachim Molkentin, Uta Dickhoefer, Karin Knappstein, Mario Hasler, Andreas Susenbeth
The aim of this study was to examine the capacity of quebracho tannin extract (QTE) to modulate the fatty acid (FA) profile in the milk fat of cows. Fifty Holstein cows yielding 33.2 ± 8.2 kg/d of milk were divided into 2 groups. The cows were fed a basal diet with a forage-concentrate ratio of 66:34 on a dry matter (DM) basis. Diets tested were control (CON, basal diet without QTE) and basal diet plus 15 or 30 g of QTE/kg of DM (QTE15 and QTE30, respectively). Two treatments could be tested simultaneously and were arranged along 6 periods...
May 24, 2017: Journal of Dairy Science
https://www.readbyqxmd.com/read/28543537/evaluation-of-bioactive-compounds-in-black-table-olives-fermented-with-selected-microbial-starters
#20
Miriana Durante, Maria Tufariello, Luca Tommasi, Marcello Salvatore Lenucci, Gianluca Bleve, Giovanni Mita
BACKGROUND: Table olives have been a component of the Mediterranean diet for centuries, with a consumption trend currently increasing worldwide. They are rich in bioactive molecules with nutritional, antioxidant, anti-inflammatory or hormone-like properties. In this study, the concentration of phenolics, triterpenic acids, carotenoids, vitamins, as well as the fatty acid profiles and antioxidant activity were analyzed in the edible portion of black table olives (Olea europea L.) from Italian (Cellina di Nardò and Leccino) and Greek (Kalamàta and Conservolea) cultivars fermented with selected autochthonous starters and in the corresponding monovarietal olive oils...
May 25, 2017: Journal of the Science of Food and Agriculture
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