Results 21 to 30 of about 2,370 (196)
Comparison of rancimat evaluation modes to assess oxidative stability of fish oils [PDF]
Journal of the American Oil Chemists' Society, 1997 AbstractTwo Rancimat evaluation modes, the induction period (IP), and the time needed to achieve a selected difference in conductivity (tΔK) were compared for assessing relative stability of anchovy, sardine, and hake liver oils. Mean coefficients of variation were 2.5 and 2.4% for IP and tΔK values, respectively, for oils oxidized in the range 55–90°C.
Méndez, Eduardo +3 more
openaire +3 more sources
Scientia Agropecuaria, 2013 The objective of this research was to determine the oxidative stability index (OSI) in virgin oil seed Sesamum indicum L. (Sesame) previously extracted by cold pressing, clarified by centrifugation and stored under nitrogen atmosphere and cooling on. The
Eudes Villanueva López +2 more
doaj +2 more sources
Influence of antioxidants on oxidative stability of the oil Chia (Salvia hispanica L.) by rancimat
Scientia Agropecuaria, 2017 Oxidative rancidity, known as autoxidation, is the main cause of deterioration of oils and fats, which can be controlled by the use of antioxidants increasing oxidative stability and shelf life. Chia oil is rich in polyunsaturated fatty acids (PUFAs), particularly omega-3 (ω-3) and omega-6 (ω-6) beneficial to human health, but PUFAs also favor the ...
Villanueva, Eudes +3 more
openaire +5 more sources
Preservation of gallic acid and methyl gallate on purified Kilka fish oil oxidation by Rancimat [PDF]
Food Science & Nutrition, 2019 AbstractKinetic analysis of gallic acid and methyl gallate in purified Kilka oil was studied in the concentration, range 200–1600 ppm, during autooxidation in Rancimat test at 60°C. The stabilization factor (F), the oxidation rate ratio (ORR), the activity (A), and the mean rate of antioxidant consumption (Winh) were determined. The scavenging activity
Maryam Asnaashari +2 more
openaire +3 more sources
Inhibition of Hydroperoxy‐, Keto‐ and Hydroxy‐FAME by Alpha‐ and Delta‐Tocopherol at Rancimat Conditions [PDF]
Journal of the American Oil Chemists' Society, 2015 AbstractThe effects of α‐ and δ‐tocopherol on inhibition of hydroperoxides, keto and hydroxy compounds under Rancimat conditions, i.e. 100 °C and air bubbling, were studied in samples of fatty acid methyl esters (FAME) obtained from high linoleic (HL) and high oleic (HO) sunflower oils. Primary hydroperoxides from methyl linoleate and methyl oleate and
Susana Marmesat +4 more
core +4 more sources
Chemical and Biochemical Engineering Quarterly, 2013 The effects of three antioxidants on the oxidative stability of soybean biodiesel were studied using two techniques: Thermogravimetry (TG-DTG curves) and the Rancimat method. The onset (Tonset) and endset (Tendset) temperatures were determined from TG curves, the peak temperatures (Tpeak) were determined from DTG curves, and induction times were ...
Souza, F. H. N. +4 more
openaire +3 more sources
European Journal of Lipid Science and Technology, 2007 AbstractThis work presents a comparison between a new method for the determination of the oxidative stability of edible oils at frying temperatures, based on near‐infrared emission spectroscopy (NIRES), and the Rancimat method at 110 °C. In the NIRES‐based method, the induction time (IT) is determined by means of the variation of the emission band at ...
Fabiano B. Gonzaga +3 more
openaire +2 more sources
Physico-Chemical Properties, Fractionation and Antioxidant Activity of Some Essential Oils Utilized in Mayonnaise Preparation and Storage [PDF]
Arab Universities Journal of Agricultural Sciences, 2021 Two types of essential oils (thyme and Stachys) were used in this Estimation. The chemical composition, antioxidant activity (by DPPH assay) and the rancimat method were used to assess the stability effect of these essential oils.
Mamdouh El kalyoubi +4 more
doaj +1 more source
Stability evaluation of biodiesel supplemented with synthetic and bio-based antioxidants by a pressurized accelerated oxidation method [PDF]
Hemijska Industrija, 2023 This work examines pressurized accelerated oxidation by a RapidOxy tester as an alternative method for determination of biodiesel oxidation stability.
Đurišić-Mladenović Nataša +5 more
doaj +1 more source
Development of a Plant-Based Chocolate Spread With Enhanced Vitamin D3 Bioavailability and Balanced Omega Fatty Acids. [PDF]
Food Sci NutrDeveloped a novel plant‐based chocolate spread using soy, lentil, and rice milk powders, offering a sustainable dairy alternative. Enhanced Vitamin D3 bioavailability through nano‐liposomal encapsulation, addressing a key micronutrient deficiency. Improved the fatty acid profile by incorporating an oleogel with balanced omega‐3 and omega‐6 fatty acids.
Azab DEH +4 more
europepmc +2 more sources