Lipid composition

This study was conducted to evaluate the digestibility of different dietary lipid sources in the diet of common carp, and to determine how the PUFA composition of plant oils affects the growth, feed utilization, and tissue FA composition of fish fed these plant-derived oils.

14p vibecca 01-10-2024 2 1   Download

Seven known compounds, including two neolignans, four lignans, and one flavane were isolated from the methanol extract of Pandanus tonkinenis fruits. Their structures were determined to be ficusal, vladinol F, medioresinol, syringaresinol, lariciresinol, secoisolariciresinol, and luteoliflavan by analysis of MS and NMR data as well as by comparison of their spectral data with those reported in the literature.

7p dianmotminh02 03-05-2024 4 2   Download

The content of unsaturated fatty acids did differ between males and females of the two species studied. However, these differences are few and can be explained by the timing of their breeding seasons. The fatty acid composition of the fats from both investigated octopus species permits their use as food with nutritional value, and the production of bioactive additives.

8p dianmotminh02 03-05-2024 4 1   Download

In summary, our study provides novel insights into the lipid composition and content of Pacific oysters cultured in Van Don, Quang Ninh. The results demonstrate the temporal variability in lipid classes and fatty acid composition throughout the year, with the highest lipid content observed during the pre-reproductive period. These findings could contribute to better understanding the nutritional value of Pacific oysters and inform future aquaculture practices.

8p dianmotminh02 03-05-2024 5 3   Download

This study proceeded to address the following objectives: To evaluate the effect of gas composition commonly used in modified atmosphere packaging (80% O2 and 20% CO2) on the shelf life of beef patties; to formulate an optimal solution containing natural antioxidant and antimicrobial preservatives and to study the effect of this combination and MAP on physiochemical attributes (surface colour (chroma, hue angle), metmyoglobin and oxmyoglobin contents, lipid stability) of fresh beef patties; to evaluate the effect of combined antioxidant – antimicrobial natural preservative and MAP on packag...

95p runthenight04 02-02-2023 6 1   Download

Bài viết nhằm đánh giá ảnh hưởng protein thủy phân cá ngừ (VTH) bổ sung trong thức ăn lên sinh trưởng, hiệu quả sử dụng thức ăn và thành phần sinh hóa của chim giai đoạn giống. Thức ăn thí nghiệm được triển khai với 5 loại thức ăn (protein thô: 46,5%, lipid: 10%) tương ứng bổ sung 0; 3; 6; 9 và 12% nội tạng cá ngừ thủy phân. Cá chim (5,48 g/con) được bố trí ngẫu nhiên vào trong 15 bể composit và cho ăn tới khi thỏa mãn trong 8 tuần.

8p angicungduoc8 06-11-2020 42 2   Download

Nghiên cứu ảnh hưởng của hàm lượng lipid trong thức ăn phối chế cho cua biển (Scylla paramamosain) được thực hiện trong 2 giai đoạn ương. Trong giai đoạn zoea 3 đến megalop, cua được nuôi trong hệ thống bể composite 120 l, độ mặn 30‰ và mật độ 50 con/l. Giai đoạn từ megalop đến cua 1, cua được nuôi trong bể nhựa 50 l, độ mặn 26‰ và mật độ nuôi 10 con/l.

10p meriday 19-04-2019 45 5   Download

This paper focuses on an autotrophic cultivation of Chlorella vulgaris, in low nitrogen-content media, using indoor photobioreactors. Nutritional factors, which controlled the Chlorella growth and the chemical composition of cells (i.e., proteins, carbohydrates, lipids), were studied. The moderate feeding of both N and P and/or their starvation in the photobioreactor were investigated in order to induce a high accumulation of lipids into Chorella cells.

18p vannhat_xq 25-02-2017 76 4   Download

The purpose of this work was to study protein and lipid recovery from yellowfin tuna head by enzymatic hydrolysis as well as to analyse the amino acid compositions in tuna head protein hydrolysate and the fatty acid compositions in tuna head oil.

9p nganga_08 12-10-2015 81 3   Download

A series of trehalose-based oligosaccharides were isolated from the cytoplasmic fraction of Mycobacterium smegmatis and purified by gel-filtration and paper chromatography and TLC. Their structures were determined by HPLC and GLC to determine sugar composition and ratios, MALDI-TOF MS to measure molecular mass, methylation analysis to determine linkages, 1H-NMR to obtain anomeric configurations of glycosidic linkages, and exoglycosidase digestions followed by TLC to determine sequences and anomeric configurations of the monosaccharides....

8p system191 01-06-2013 36 5   Download

Lipid rafts are liquid-ordered membrane microdomains with a unique protein and lipid composition found on the plasma membrane of most, if not all, mammalian cells. A large number of signalling molecules are concentrated within rafts, which have been proposed to function as signalling centres capable of facilitating efficient and specific signal transduction. This review summarizes current knowledge regarding the composition, structure, and dynamic nature of lipid rafts, as well as a number of different signalling path- ways that are compartmentalized within these microdomains....

16p research12 01-06-2013 37 3   Download

The chemical structure of lipid A from the lipopolysaccha-ride of the mushroom-associated bacterium Pseudomonas reactans,a pathogen of cultivated mushroom, was elucida-ted by compositional analysis and spectroscopic methods (MALDI-TOF and two-dimensional NMR). The sugar backbone was composed of theb-(1¢fi6)-linkedD-gluco-samine disaccharide 1-phosphate.

8p research12 29-04-2013 43 3   Download

Vibrio choleraehemolysin (HlyA), a water-soluble protein with a native monomeric relative molecular mass of 65 000, forms transmembrane pentameric channels in target bio-membranes.TheHlyAbinds to lipid vesicles nonspecifically and without saturation; however, self-assembly is triggered specifically by cholesterol.Here we show that the HlyA partitioned quantitatively to amphiphilic media irrespective of their compositions, indicating that the toxin had an amphiphilic surface.

8p research12 23-04-2013 56 4   Download

Depth of bilayer penetration and effects on lipid mobility conferred by themembrane-active peptidesmagainin, melit-tin, and a hydrophobic helical sequence KKA(LA)7KK (denoted KAL), were investigated by colorimetric and time-resolved fluorescence techniques in biomimetic phos-pholipid/poly(diacetylene)vesicles. The experiments dem-onstrated that the extent of bilayer permeation and peptide localization within the membrane was dependent upon the bilayer composition, and that distinct dynamic modifica-tions were induced by each peptide within the head-group environment of the phospholipids....

10p fptmusic 12-04-2013 41 2   Download

The membrane lipid composition of planctomycetes capable of the an-aerobic oxidation of ammonium (anammox), i.e. Candidatus‘Brocadia anammoxidans’ and Candidatus‘Kuenenia stuttgartiensis’, was shown to be composed mainly of so-called ladderane lipids. These lipids are com-prised of three to five linearly concatenated cyclobutane moieties withcis ring junctions, which occurred as fatty acids, fatty alcohols, alkyl glycerol monoethers, dialkyl glycerol diethers and mixed glycerol ether⁄esters. ...

14p fptmusic 11-04-2013 62 6   Download

The chemical structure of a novel lipid A, the major com-ponent of the lipopolysaccharide from the marine gamma-proteobacteriumMarinomonas vagaATCC 27119 T ,was determined by compositional analysis, NMR spectroscopy, and MS.

10p dell39 03-04-2013 49 4   Download

We havemade a comprehensive and quantitative analysis of the lipid composition of caveolae from primary rat fat cells and compared the composition of plasma membrane inside and outside caveolae. We isolated caveolae from purified plasmamembranesusingultrasonication incarbonatebuffer to disrupt the membrane, or extraction with nonionic detergent, followed by density gradient ultracentrifugation. The carbonate-isolated caveolae fraction was further immunopurified using caveolin antibodies.

9p dell39 03-04-2013 32 4   Download

Surfactant-like membranes containing the 21-residue peptide KLLLL-KLLLLKLLLLKLLLLK (KL4 ), have been clinically tested as a therapeu-tic agent for respiratory distress syndrome in premature infants. The aims of this study were to investigate the interactions between the KL4 peptide and lipid bilayers, and the role of both the lipid composition and KL4 structure on the surface adsorption activity of KL4 -containing membranes.

13p inspiron33 26-03-2013 40 4   Download

Several studies have shown that deficient uptake or excessive break down of membrane phospholipids may be associated with neurodegenerative and psychiatric disorders. The purpose of the present study was to examine the effects of postnatal iron administration in lipid composition and behavior and whether or not the established effects may be altered by subchronic administration of the neuroleptic compounds, clozapine and haloperidol.

12p inspiron33 26-03-2013 48 4   Download

The influence of the fatty acid composition of chylomicron remnant-like particles (CRLPs) on their uptake and induction of lipid accumulation in macrophages was studied. CRLPs containing triacylglycerol enriched in saturated, monounsaturated, n)6or n)3 polyunsaturated fatty acids derived from palm, olive, corn or fish oil, respectively, and macrophages derived from the human monocyte cell line THP-1 were used.

9p inspiron33 23-03-2013 61 4   Download