Big Chemical Encyclopedia

Chemical substances, components, reactions, process design ...

Articles Figures Tables About

Ethyl linoleate

Antioxidant capacities of common individual curcuminoids were determined in vitro by phosphomolybdenum and linoleic acid peroxidation methods. Antioxidant capacities expressed as ascorbic acid equivalents (pmol/g) were 3099 for curcumin, 2833 for demethoxycurcumin, and 2677 for bisdemethoxycurcumin at concentrations of 50 ppm. The same order of antioxidant activity (curcumin > demethoxycurcumin > bisdemethoxycurcumin) was observed when compared with BHT (buty-lated hydroxyl toluene) in linoleic peroxidation tests. The antioxidant activity of curcumin in the presence of ethyl linoleate was demonstrated and six reaction products were identified and structurally characterized. The mechanism proposed for this activity consisted of an oxidative coupling reaction at the 3 position of the curcumin with the lipid and a subsequent intramolecular Diels-Alder reaction. ... [Pg.333]

Sand as diluent to prevent caking, 22,98 Sandmeyer reaction, 24, 22 Saponification, of ethyl linoleate, 22, 78 of ethyl linolenate, 22, 84 of natural oils, 22, 75, 79, 82 of Ji-nitrobenzyl acetate, 24, 81 Screen, protective, 22, 97 Seal, rubber tube, for stirrer shaft, 21, 40... [Pg.59]

Ethyl hydrogen sebacate, 21, 48 electrolysis of, 21, 48 Ethyl isothiocyanate, 21, 82 Ethyl lactate, 21, 71 Ethyl laurate, 20, 69 Ethyl linoleate, 22, 77 Ethyl linolenate, 22, 83 Ethyl malonate, 23, 16 Ethyl mercaptan, 22, 59 Ethyl 1V-methyl-/3-aminopropionate, 20, 37... [Pg.58]

RH Ethyl linoleate 3-Heptene, 2,6-dimethyl- Benzene, 1,4-diisopropyl- Cumene... [Pg.40]

Hydrocarbon Cyclohexene Cyclohexene, 1-methyl- Dihydromyrcene Ethyl linoleate... [Pg.57]

Ethyl linoleate, e229 Ethyl methyl ketone, b475... [Pg.223]

Ethyl isobutyrate, azeotropic mixtures with butyl alcohols, 4 395t Ethyl lactate preparation, 10 489 Ethyl linalool, 24 503 Ethyl linoleate, cosmetically useful lipid, 7 833t... [Pg.337]

Ethyl isonicotinate, e216 Ethyl isonipecotate, e206 Ethyl isopropylacetate, el 70 Ethyl isothiocyanatoformate, e32 Ethyl isovalerate, el 70 Ethyl levulinate, el 95 Ethyl linoleate, el 88... [Pg.247]

Fast autoxidation of ethyl linoleate catalyzed by Mn(acac)j and bipyridine a possible drying catalyst for alkyl paints. Inorg. Chem. 2004, 43, 2456-2458. [Pg.56]

Hydroperoxide Levels. In thermally oxidized fats hydroperoxides are usually very low. At higher temperatures, oxidation proceeds rapidly and the rate of hydroperoxide decomposition exceeds that of hydroperoxide formation (17,18). For example, when ethyl linoleate was oxidized at 70°C, peroxide content reached a maximum of 1777 meq/kg after 6 hr then decreased to 283 meq/kg after 70 hr. At 250°C, on the other hand, peroxide value reached a maximum of only 198 meq/kg after 10 min, and was zero after 30 min. [Pg.95]

As expected, the rate of oxidation was much faster at the higher temperature for both the adsorbed and the bulk samples. At 60°C ethyl linoleate oxidized faster when adsorbed on silica than when In bulk. On the other hand, oxidation of the bulk samples was faster at 180°C than that of the monolayers (Fig. 1). The faster oxidation of linoleate in monolayers at 60°C is probably due to the larger surface and the more facile exposure to oxygen. This, however, appears to be offset by the higher mobility of the substrate molecules and the faster radical transfer in bulk at the higher temperature. [Pg.100]

Figure 1. Rate of ethyl linoleate oxidation on silica and in bulk at 60 C and 180 C. (Reprinted with permission from ref. 39. Copyright 1988 American Oil Chemistry Society.)... Figure 1. Rate of ethyl linoleate oxidation on silica and in bulk at 60 C and 180 C. (Reprinted with permission from ref. 39. Copyright 1988 American Oil Chemistry Society.)...
Fig. 5.1. Conjugated diene ultraviolet absorption of peroxidized ethyl linoleate and rat liver microsomal lipids peroxidized in vitro. (Recknagel and Glende, 1984.)... Fig. 5.1. Conjugated diene ultraviolet absorption of peroxidized ethyl linoleate and rat liver microsomal lipids peroxidized in vitro. (Recknagel and Glende, 1984.)...
Ethyl linoleate is prepared by debromination of the tetra-bromide by action of zinc, or nascent hydrogen from zinc and glacial acetic acid 3 by zinc and alcoholic-hydrochloric acid 2, 4 and by zinc and alcoholic-sulfuric acid.5 The pure acid can be obtained by saponification of the ester, and directly by action of zinc and pyridine (quinoline, aniline, piperidine) on tetrabromo-stearic acid.6... [Pg.101]

Comments ethyl linoleate is used in pharmaceutical formulations as an emollient and humactent. It is also used as a solvent for fats. The EINECS number for ethyl linoleate is 208-868-4. [Pg.414]

See other pages where Ethyl linoleate is mentioned: [Pg.383]    [Pg.59]    [Pg.242]    [Pg.58]    [Pg.60]    [Pg.202]    [Pg.89]    [Pg.366]    [Pg.89]    [Pg.99]    [Pg.2]    [Pg.202]    [Pg.73]    [Pg.77]    [Pg.557]    [Pg.414]    [Pg.414]   
See also in sourсe #XX -- [ Pg.22 , Pg.77 ]

See also in sourсe #XX -- [ Pg.22 , Pg.77 ]

See also in sourсe #XX -- [ Pg.22 , Pg.77 ]

See also in sourсe #XX -- [ Pg.366 ]

See also in sourсe #XX -- [ Pg.22 , Pg.77 ]

See also in sourсe #XX -- [ Pg.22 , Pg.77 ]

See also in sourсe #XX -- [ Pg.127 ]

See also in sourсe #XX -- [ Pg.73 ]

See also in sourсe #XX -- [ Pg.22 , Pg.77 ]

See also in sourсe #XX -- [ Pg.414 ]

See also in sourсe #XX -- [ Pg.22 , Pg.77 ]

See also in sourсe #XX -- [ Pg.22 , Pg.77 ]

See also in sourсe #XX -- [ Pg.1286 ]

See also in sourсe #XX -- [ Pg.22 , Pg.77 ]

See also in sourсe #XX -- [ Pg.22 , Pg.77 ]

See also in sourсe #XX -- [ Pg.22 , Pg.77 ]

See also in sourсe #XX -- [ Pg.22 , Pg.77 ]

See also in sourсe #XX -- [ Pg.275 , Pg.276 ]

See also in sourсe #XX -- [ Pg.175 ]



SEARCH



© 2024 chempedia.info