Analysis of Fat Acid Oxidation Products by Countercurrent Distribution Methods. II. Methyl Oleate2

1951 ◽  
Vol 73 (6) ◽  
pp. 2861-2864 ◽  
Author(s):  
J. Fugger ◽  
K. T. Zilch ◽  
J. A. Cannon ◽  
H. J. Dutton
Keyword(s):  
Countercurrent Distribution ◽  
Oxidation Products ◽  
Acid Oxidation

Analysis of fat acid oxidation products by countercurrent distribution methods. IV. Methyl linoleate

1952 ◽  
Vol 29 (11) ◽  
pp. 447-452 ◽  
Author(s):  
Joseph A. Cannon ◽  
Karl T. Zilch ◽  
Stanley C. Burket ◽  
Herbert J. Dutton
Keyword(s):  
Methyl Linoleate ◽  
Countercurrent Distribution ◽  
Oxidation Products ◽  
Acid Oxidation

scholarly journals Impact of Advanced Oxidation Products on Nanofiltration Efficiency

Water ◽  
2019 ◽  
Vol 11 (3) ◽  
pp. 541 ◽  
Author(s):  
Renata Żyłła ◽  
Rafał Milala ◽  
Irena Kamińska ◽  
Marcin Kudzin ◽  
Marta Gmurek ◽  
...  
Keyword(s):  
Salicylic Acid ◽  
Membrane Filtration ◽  
Main Product ◽  
Membrane Separation ◽  
Negative Impact ◽  
Microscopic Analysis ◽  
Contact Angles ◽  
Oxidation Products ◽  
Acid Oxidation ◽  
Dihydroxybenzoic Acid

The aim of the work was to determine the influence of salicylic acid (SA) oxidation products on the effectiveness of their further removal in the membrane filtration process. Two commercial polyamide-based polymer membranes, HL (GE Osmonics) and TS80 (TriSepTM), were used and characterized by SEM microscopic analysis, contact angles, and free surface energy. The products of salicylic acid oxidation, 2,3- and 2,5-dihydroxybenzoic acid and catechol, were determined and their impact on the removal of unreacted salicylic acid in the nanofiltration process was investigated. It was also checked to what extent and why they were retained or not by the membranes. The results of the research have shown that the main product of salicylic acid oxidation, 2,3-dihydroxybenzoic acid, has a negative impact on the retention of salicylic acid in the nanofiltration stage, while the other product, catechol, improves SA retention. The determined values of contact angles correlate well with solubility (S) of the tested compounds, which increases in the following order SSA < S2,3-DHBA < SCAT, while the contact angle of the membrane decreases. Nevertheless, it has been shown that some oxidation products can penetrate the environment due to poorer membrane separation properties of these products.

Chlorogenic Acid Oxidation by a Crude Peroxidase Preparation: Biocatalytic Characteristics and Oxidation Products

2009 ◽  
Vol 5 (1) ◽  
pp. 243-251 ◽  
Author(s):  
Ali Osman ◽  
Ayman El Agha ◽  
Dimitris P. Makris ◽  
Panagiotis Kefalas
Keyword(s):  
Chlorogenic Acid ◽  
Oxidation Products ◽  
Acid Oxidation

scholarly journals Oxidation of Alkylaromatics

2007 ◽  
Vol 4 (1) ◽  
pp. 1-13 ◽  
Author(s):  
T. S. S. Rao ◽  
Shubhra Awasthi
Keyword(s):  
Transition Metal ◽  
Benzoic Acid ◽  
Oxidation Product ◽  
Alkali Metals ◽  
Oxidation Products ◽  
Metal Salts ◽  
Acid Oxidation ◽  
Transition Metal Salts ◽  
Strong Acids ◽  
Primary Oxidation

Hydroperoxide atα-position to the aromatic ring is the primary oxidation product formed. In all cases monoalkylbenzenes lead to the formation of benzoic acid. Oxidation in the presence of transition metal salts not only accelerate but also selectively decompose the hydroperoxides. Alkyl naphthalenes mainly produce the corresponding naphthalene carboxylic acids. Hock-rearrangement by the influence of strong acids converts the hydroperoxides to hemiacetals. Peresters formed from the hydroperoxides undergo Criegee rearrangement easily. Alkali metals accelerate the oxidation while CO2as co-oxidant enhances the selectivity. Microwave conditions give improved yields of the oxidation products.

Measurement of Enzymatic and Nonenzymatic Polyunsaturated Fatty Acid Oxidation Products in Plasma and Urine of Macular Degeneration Using LC‐QTOF‐MS / MS

Lipids ◽  
2020 ◽  
Vol 55 (6) ◽  
pp. 693-706
Author(s):  
Ho Hang Leung ◽  
Kin Sum Leung ◽  
Thierry Durand ◽  
Jean‐Marie Galano ◽  
Jetty Chung‐Yung Lee
Keyword(s):  
Fatty Acid ◽  
Macular Degeneration ◽  
Fatty Acid Oxidation ◽  
Polyunsaturated Fatty Acid ◽  
Oxidation Products ◽  
Acid Oxidation
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