Antimicrobial activity of some ricinoleic acid oleic acid derivatives

1961 ◽  
Vol 38 (6) ◽  
pp. 321-324 ◽  
Author(s):  
Arthur F. Novak ◽  
Gladys C. Clark ◽  
Harold P. Dupuy
2018 ◽  
Vol 3 (48) ◽  
pp. 13548-13552
Author(s):  
Michael B. Mensah ◽  
Paul D. McNaughter ◽  
Simon G. McAdams ◽  
Floriana Tuna ◽  
David J. Lewis ◽  
...  
Keyword(s):  

1965 ◽  
Vol 43 (1) ◽  
pp. 49-62 ◽  
Author(s):  
D. T. Canvin

Acetate-1-C14 and acetate-2-C14 were supplied to slices of developing castor bean endosperm. The molecules were extensively incorporated into long-chain fatty acids, water-soluble compounds, and protein. Oleic acid was the fatty acid initially labelled from acetate and it was the precursor of ricinoleic acid. Aerobic conditions were required for the formation of oleic acid and for the conversion of oleic acid to ricinoleic acid. Under anaerobic conditions the incorporation of acetate carbon into fatty acids was inhibited more than 90% and almost all of the C14 was found in stearic and palmitic acids. Stearic acid appeared to be formed first and palmitic acid appeared to be derived from it through a shortening of the chain. The position of linoleic acid in the fatty acid interconversions was not clear except that it was not a free intermediate in the conversion of oleic acid to ricinoleic acid.Malonate-C14 was only absorbed slightly by the tissue and although absorption could be increased by the use of diethyl malonate the metabolism of the compound was not facilitated. Because of its poor utilization by the tissue the role of malonate in long-chain fatty acid synthesis in this tissue could not be ascertained.


2018 ◽  
Vol 95 (1) ◽  
pp. 69-77 ◽  
Author(s):  
Sylwia Matysiak ◽  
Julia Zabielska ◽  
Józef Kula ◽  
Alina Kunicka-Styczyńska

2014 ◽  
Vol 103 (2) ◽  
pp. 273-281 ◽  
Author(s):  
Polina Prokopovich ◽  
Mathias Köbrick ◽  
Emmanuel Brousseau ◽  
Stefano Perni

2017 ◽  
Vol 46 (2) ◽  
pp. 268-273 ◽  
Author(s):  
Pradeep Pushparaj Selvadoss ◽  
Jayshree Nellore ◽  
Malathy Balaraman Ravindrran ◽  
Uma Sekar ◽  
Jayakrishna Tippabathani

Marine Drugs ◽  
2020 ◽  
Vol 18 (2) ◽  
pp. 113 ◽  
Author(s):  
René Pemha ◽  
Victor Kuete ◽  
Jean-Marie Pagès ◽  
Dieudonné Emmanuel Pegnyemb ◽  
Paul Mosset

A series of novel substituted 1-O-alkylglycerols (AKGs) containing methoxy (8), gem-difluoro (9), azide (10) and hydroxy (11) group at 12 position in the alkyl chain were synthesized from commercially available ricinoleic acid (12). The structures of these new synthesized AKGs were established by NMR experiments as well as from the HRMS and elementary analysis data. The antimicrobial activities of the studied AKGs 8–11 were evaluated, respectively, and all compounds exhibited antimicrobial activity to different extents alone and also when combined with some commonly used antibiotics (gentamicin, tetracycline, ciprofloxacin and ampicillin). AKG 11 was viewed as a lead compound for this series as it exhibited significantly higher antimicrobial activity than compounds 8–10.


Author(s):  
M.D. Bentzon ◽  
J. v. Wonterghem ◽  
A. Thölén

We report on the oxidation of a magnetic fluid. The oxidation results in magnetic super lattice crystals. The “atoms” are hematite (α-Fe2O3) particles with a diameter ø = 6.9 nm and they are covered with a 1-2 nm thick layer of surfactant molecules.Magnetic fluids are homogeneous suspensions of small magnetic particles in a carrier liquid. To prevent agglomeration, the particles are coated with surfactant molecules. The magnetic fluid studied in this work was produced by thermal decomposition of Fe(CO)5 in Declin (carrier liquid) in the presence of oleic acid (surfactant). The magnetic particles consist of an amorphous iron-carbon alloy. For TEM investigation a droplet of the fluid was added to benzine and a carbon film on a copper net was immersed. When exposed to air the sample starts burning. The oxidation and electron irradiation transform the magnetic particles into hematite (α-Fe2O3) particles with a median diameter ø = 6.9 nm.


1958 ◽  
Vol 34 (5) ◽  
pp. 901-909 ◽  
Author(s):  
Ervin Kaplan ◽  
Bernard D. Edidin ◽  
Robert C. Fruin ◽  
Lyle A. Baker

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