Results 91 to 100 of about 2,370 (196)
, 2022 This study aimed to evaluate the quality of selected oils from the seeds of herbs and vegetables (basil, fenugreek, coriander, tomato, garden cress, parsley, and dill), especially their oxidative stability. The oils were tested for oxidation degree (acid
Edyta Symoniuk +4 more
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Oxidative stability of blended sunflower and castor biodiesel by Rancimat and static mode P- DSC
, 2019 Biodiesel is composed of saturated and unsaturated long chain fatty acid alkyl esters. Due to these unsaturated compounds, there is a susceptibility to the autoxidation process. Castor biodiesel has excellent thermal and oxidative stabilities due to its
Chellappa, Thiago +7 more
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Identificação de produtos de oxidação voláteis do biodiesel submetido a oxidação acelerada por Rancimat [PDF]
, 2022 Segundo a Agência Nacional de Petróleo, Gás Natural e Biocombustíveis (ANP), a produção de biodiesel no Brasil cresce a cada ano e, por consequência, sua comercialização também.
Nascimento, Bruno Costa do
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Scientia Agropecuaria, 2015 El aceite de sacha inchi es rico en ácidos grasos poli-insaturados que podrían oxidarse, limitando su vida útil. El método Rancimat, es oficial, para evaluaciones aceleradas de estabilidad oxidativa en aceites.
Gilbert Rodríguez +3 more
doaj +2 more sources
Synthesis of Hydroxytyrosyl Alkyl Ethers from Olive Oil Waste Waters
Molecules, 2009 The preparation of a new type of derivatives of the naturally occurring antioxidant hydroxytyrosol is reported. Hydroxytyrosyl alkyl ethers were obtained in high yield by a three-step procedure starting from hydroxytyrosol isolated from olive oil waste ...
Juan Fernández-Bolaños +6 more
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Oxidative Stability of Selected Edible Oils
Molecules, 2018 The aim of the study was to examine and compare oxidative stability of refined (peanut, corn, rice bran, grapeseed, and rapeseed) oils. The oils were subject a Schaal Oven Test (temperature 63 ± 1 °C) and a Rancimat test (temperature 120 ° ...
Magdalena Maszewska +5 more
doaj +1 more source
Relationship structure-antioxidant activity of hindered phenolic compounds
Grasas y Aceites, 2014 The relationship between the structure and the antioxidant activity of 21 hindered phenolic compounds was investigated by Rancimat and DPPH· tests. 3-tert-butyl-5-methylbenzene-1,2-diol is the strongest antioxidant in the Rancimat test but not in the ...
X. C. Weng, Y. Huang
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Estudo da estabilidade termo-oxidativa de biodiesel por Rancimat, PetroOXY e Termogravimetria [PDF]
, 2012 One of the main concerns of using biodiesel is with thermal and oxidative susceptibility when in contact with air during storage and when subjected to high temperatures under engine operating conditions.
Marinho, Raíssa Bolzan
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, 2017 The objectives of this study were to analyze phytochemical components, to determine total phenol and flavonoid content, and to test the antioxidant activity of dragon fruit vine extract.
Andrianto, Dimas +7 more
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Oxidative stability of crude oils relative to tocol content from eight oat cultivars: Comparing the Schaal oven and Rancimat tests [PDF]
Oats are a good source of oil containing polyunsaturated fatty acids and natural antioxidants such as tocols. This study investigated tocol composition relative to oxidative stability in crude oils from eight oat cultivars. Tocol content in the cultivars
Rudolf, Ondřej +3 more
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