Results 211 to 220 of about 6,023 (239)

Evaluation of antioxidants for cod liver oil by chemiluminescence and the rancimat method

Journal of the American Oil Chemists' Society, 1995
Commercial blends of natural antioxidants,viz., tocopherol concentrates, rosemary extracts, sage extracts, and lecithins, were tested for their ability to stabilize cod liver oil. The antioxidants were tested by using the Rancimat apparatus at 80°C and by a method based on hypochlorite‐activated chemiluminescence analysis of samples stored at 35°C for ...
Ivan C. Burkow, Line Vikersveen, Kristin Saarem   +2 more
openaire   +1 more source

Comparative study of biodiesel oxidation stability using Rancimat, PetroOXY, and low P-DSC

Journal of Thermal Analysis and Calorimetry, 2014
Oxidation stability of biodiesel is one of the most important factors used to evaluate its quality, allowing its commercialization and ensuring its shelf life. In this context, several accelerated methods have been used to measure oxidative stability to predict the maximum storage time at which biodiesel can be submitted without compromising its ...
M. L. Murta Valle, R. S. Leonardo, J. Dweck   +2 more
openaire   +1 more source

Oxidation stability of methyl esters studied by differential thermal analysis and rancimat

Journal of the American Oil Chemists' Society, 2005
AbstractThe oxidation stability of methyl esters derived from fresh rapeseed oil and waste frying oil, used as alternative biodiesel fuels, both distilled and undistilled, unstabilized and stabilized by pyrogallol and BHT, was studied by differential thermal analysis (DTA) under nonisothermal conditions at various heating rates and by the Rancimat test
J. Polavka, J. Paligová, J. Cvengroš, P. Simon   +3 more
openaire   +1 more source

Quantitation of Aging Products Formed in Biodiesel during the Rancimat Accelerated Oxidation Test

Energy & Fuels, 2014
Biodiesel (rapeseed oil methyl ester) was aged in a Rancimat device at a temperature of 110 °C and an air flow of 10 L/h. Time-resolved analyses applying gas chromatography–flame ionization detection, gas chromatography–mass spectrometry, and ion-exchange chromatography on the formation of aging products were performed.
Stephanie Flitsch, Philipp Marco Neu, Sigurd Schober, Norbert Kienzl, Jörg Ullmann, Martin Mittelbach   +5 more
openaire   +1 more source

Oxidation stability of biodiesel fuel produced from Jatropha Curcas L using Rancimat and PetroOXY method

Energy Sources, Part A: Recovery, Utilization, and Environmental Effects, 2018
In the present work, the oxidation stabilities of oil biodiesel fuel from Jatropha curcas L were investigated by using both Rancimat and PetroOXY test method. Three types of conventional antioxidants, i.e.
T. Prakoso, A. Tanaka, T. Hirotsu, P. Udomsap, N. Chollacoop, S. Goto, A. Indarto   +6 more
semanticscholar   +1 more source

Oxidative stability of crude oils relative to tocol content from eight oat cultivars: Comparing the Schaal oven and Rancimat tests

Journal of Food Composition and Analysis, 2023
Kshitiz Pokhrel, L. Kouřimská, Ondřej Rudolf, Sarvenaz Khalili Tilami   +3 more
semanticscholar   +1 more source

Oxidation kinetic studies of virgin and solvent extracted pistachio oil under Rancimat test conditions

Journal of Food Measurement & Characterization, 2022
A. Dini, S. Falahati-pour, H. Hashemipour   +2 more
semanticscholar   +1 more source

Kinetics of commercial olive oil oxidation: Dynamic differential scanning calorimetry and Rancimat studies

European Journal of Lipid Science and Technology, 2010
AbstractFour samples of olive oil were oxidized under polythermal (dynamic) conditions in the cell of a normal‐pressure differential scanning calorimeter (DSC) and in the Metrohm Rancimat apparatus. The DSC experiments were carried out in an oxygen flow atmosphere using different linearly programmed heating rates in the range of 4–20 °C/min.
Ewa Ostrowska‐Ligeza, Witold Bekas, Dorota Kowalska, Marta Lobacz, Malgorzata Wroniak, Boleslaw Kowalski   +5 more
openaire   +1 more source

Catole coconut (Syagrus cearensis) oil: physicochemical characterization and thermo-oxidative stability by TG/DTG/DTA and Rancimat

Journal of Thermal Analysis and Calorimetry, 2021
B.R.L.M. Meireles, Maristela Alves Alcântara, Isabelle de Lima Brito Polari, A. G. Souza, N. A. Santos, C. Grisi, A. Cordeiro   +6 more
semanticscholar   +1 more source

Influence of the Rancimat Apparatus Operating Parameters on Oxidative Stability Determination of Cold‐Pressed Camelina and Hemp Seed Oil

European Journal of Lipid Science and Technology, 2022
E. Symoniuk, Aneta Łapińska, K. Ratusz, M. Wroniak   +3 more
semanticscholar   +1 more source