Comparative study of sulfur-free nickel and palladium catalysts in hydrodeoxygenation of different fatty acid feedstocks for production of biofuels

2016 ◽  
Vol 6 (5) ◽  
pp. 1476-1487 ◽  
Author(s):  
Imane Hachemi ◽  
Klara Jeništová ◽  
Päivi Mäki-Arvela ◽  
Narendra Kumar ◽  
Kari Eränen ◽  
...  
Keyword(s):  
Fatty Acids ◽  
Fatty Acid ◽  
Comparative Study ◽  
Palladium Catalysts ◽  
Renewable Diesel ◽  
Diesel Production

Catalytic hydrodeoxygenation (HDO) of fatty acids has been investigated using different feedstocks for renewable diesel production.

scholarly journals Integrated diesel production from lignocellulosic sugarsviaoleaginous yeast

2018 ◽  
Vol 20 (18) ◽  
pp. 4349-4365 ◽  
Author(s):  
Violeta Sànchez i Nogué ◽  
Brenna A. Black ◽  
Jacob S. Kruger ◽  
Christine A. Singer ◽  
Kelsey J. Ramirez ◽  
...  
Keyword(s):  
Fatty Acid ◽  
Renewable Diesel ◽  
High Lipid ◽  
Diesel Production

Oleaginous microbes are promising platform strains for the production of renewable diesel and fatty-acid derived chemicals given their capacity to produce high lipid yields.

scholarly journals Oil yield and fatty acid profile of seeds of three Salvia species. A comparative study

2015 ◽  
Vol 61 (2) ◽  
pp. 14-29 ◽  
Author(s):  
Mouna Ben Farhat ◽  
Rym Chaouch -Hamada ◽  
Ahmed Landoulsi
Keyword(s):  
Fatty Acids ◽  
Fatty Acid ◽  
Polyunsaturated Fatty Acids ◽  
Comparative Study ◽  
Seed Oil ◽  
Unsaturated Fatty Acids ◽  
Fatty Acid Content ◽  
Fatty Acid Analysis ◽  
Major Fatty Acid ◽  
Oil Yield

Summary A comparative study of the oil yield and fatty acid composition of three Salvia species seeds collected in different locations has been conducted. Seed oil extraction was made using a Soxhlet-extractor and fatty acid analysis was undertaken using a GC-FID. The effect of the collecting site on oil yield, as well as the content of individual fatty acid and total fatty acid and fatty acid content was significant. Seed oil yield varied from 14.94 to 22.83% and the total fatty acids ranged from 67.36 to 82.49 mg/g DW. α-Linolenic (24.02-49.19%), linoleic (20.13-42.88%), oleic (12.97-17.81%) and palmitic (8.37-16.63%) acids were the most abundant fatty acids in all analyzed samples. α-Linolenic acid was found to be the major fatty acid in S. verbenaca and S. officinalis species, however, S. aegyptiaca was characterized by the prevalence of linoleic acid. Among the unsaturated fatty acids, which were represented in all samples in high amounts (78.16-89.34%), the polyunsaturated fatty acids (α-linolenic and linoleic acids) showed important levels ranging from 63.09 to 74.71%. Seeds of S. verbenaca were the richest in polyunsaturated fatty acids.

scholarly journals Phospholipid and fatty acid composition in mitochondria from spinach (Spinacia oleracea) leaves and petioles. A comparative study

1987 ◽  
Vol 243 (2) ◽  
pp. 575-578 ◽  
Author(s):  
K Edman ◽  
I Ericson
Keyword(s):  
Fatty Acids ◽  
Fatty Acid Composition ◽  
Fatty Acid ◽  
Comparative Study ◽  
Acid Composition ◽  
Spinacia Oleracea ◽  
Significant Difference ◽  
Minor Lipids

Essentially chlorophyll-free mitochondria from photosynthetic (leaf) and non-photosynthetic tissue (petiole) were isolated from spinach (Spinacia oleracea). Leaf mitochondria were found to contain more phosphatidylcholine than phosphatidylethanolamine compared with petiole mitochondria. Galactolipids were found in small and equal amounts (5 mol of galactolipids/100 mol of galactolipids and phospholipids) in both leaf and petiole mitochondria. Fatty acid composition showed a significant difference in the amounts of C18:2 and C18:3 acids. The C18:2/C18:3 ratio was more than twice as high in all of the phospholipids studied from petiole mitochondria compared with the ratio in leaf mitochondria. More than 50% (mol/100 mol) of the fatty acids in the major lipids (phosphatidylcholine, phosphatidylethanolamine and cardiolipin) in petiole mitochondria were C18:2. In the minor lipids (phosphatidylinositol and phosphatidylglycerol), C16:0 dominated in both leaf and petiole mitochondria.

scholarly journals Comparative Study on Unsaturated Fatty Acid Extraction Using Green Extraction Methods

Proceedings ◽  
2020 ◽  
Vol 57 (1) ◽  
pp. 66
Author(s):  
Cristina-Emanuela Enascuta ◽  
Elena-Emilia Oprescu ◽  
Adrian Radu ◽  
Elena Radu ◽  
Maria Colie (Stanca) ◽  
...  
Keyword(s):  
Blood Pressure ◽  
Fatty Acids ◽  
Fatty Acid ◽  
Polyunsaturated Fatty Acids ◽  
Comparative Study ◽  
Unsaturated Fatty Acid ◽  
Extraction Methods ◽  
Acid Extraction ◽  
Preventive Effect ◽  
Green Extraction

Polyunsaturated fatty acids (PUFA) have a preventive effect on high blood pressure. [...]

scholarly journals Hydrodeoxygenation of fatty acid over La-modified HZSM5 for premium quality renewable diesel production

2021 ◽  
pp. 105406
Author(s):  
Nur Azreena ◽  
H.L.N. Lau ◽  
N. Asikin-Mijan ◽  
M.A. Hassan ◽  
S. Mohd Izham ◽  
...  
Keyword(s):  
Fatty Acid ◽  
Renewable Diesel ◽  
Diesel Production

A comparative study of the fatty acids of some micrococci

1971 ◽  
Vol 17 (12) ◽  
pp. 1503-1508 ◽  
Author(s):  
A. E. Girard
Keyword(s):  
Fatty Acids ◽  
Cell Wall ◽  
Fatty Acid Composition ◽  
Fatty Acid ◽  
Comparative Study ◽  
Acid Composition ◽  
Wall Structure ◽  
Gram Positive ◽  
Gram Negative ◽  
Branched Chain

A comparative study was made of the fatty acids of several gram-positive, -variable, and -negative micrococci. The fatty acids detected in M. diversus, M. denitrificans, and M. cerificans (Acinetobacter cerificans) were similar to those previously reported in gram-negative cocci and bacilli. The major fatty acid was oleic acid and the next most abundant acids were palmitic and palmitoleic. Micrococcus agilis, a gram-positive bacterium, was shown to have a branched-chain methyltetradecanoic acid as the major component (72%). Branched-chain and odd-numbered carbon acids as well as copious amounts of palmitic and palmitoleic acids were found in M. roseus, a gram-variable organism. Correlations were made between fatty acid composition, cell wall structure, and gram reaction of M. agilis, M. roseus, and M. cerificans. Micrococcus agilis demonstrated a typical amorphous gram-positive wall, M. roseus was shown to have a layered wall, and M. cerificans had a cell wall characteristic of gram-negative bacteria. The relationship of fatty acid composition and ultrastructure to the taxonomic position of the "problematic" micrococci was discussed.

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.

Sign in / Sign up

Export Citation Format

Share Document