Results 61 to 70 of about 4,479 (218)

Editorial: Special Issue contributed by the 10th International Chemical and Biological Engineering Conference - CHEMPOR 2008 [PDF]

open access: yes, 2009
The 10th International Chemical and Biological Engineering Conference - CHEMPOR 2008, was held in Braga, Portugal, from the 4th to the 6th of September, 2008. The conference was jointly organized by the University of Minho, the “Ordem dos Engenheiros,”
Ferreira, E. C., Mota, M.
core   +1 more source

Influence of antioxidants on oxidative stability of the oil Chia (Salvia hispanica L.) by rancimat

open access: yesScientia 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   +3 more sources

Exploring quinolinone–chalcones: Synthesis, antioxidant potential and industrial applications in biofuels

open access: yesBiofuels, Bioproducts and Biorefining, Volume 19, Issue 6, Page 1765-1783, November/December 2025.
Abstract Biofuels undergo oxidative degradation, which reduces their storage stability and efficiency, hindering their large‐scale adoption and integration into the global energy matrix. To address this issue, we synthesized and characterized four novel quinolinone–chalcone derivatives (substituted with Br, Cl, OCH3 and OCH2CH3) as potential ...
Vitor S. Duarte   +8 more
wiley   +1 more source

Impact assessment of mechanical harvest on fruit physiology and consequences on oil physicochemical and sensory quality from ‘Manzanilla de Sevilla’ and ‘Manzanilla Cacereña’ super-high-density hedgerows. A preliminary study [PDF]

open access: yes, 2016
BACKGROUND Super-intensive cultivation facilitates olive mechanized harvesting, allowing substantial savings in the production cost of virgin olive oil (VOO). However, the number of varieties adapted to this type of cultivation is small.
García Martos, José M.   +1 more
core   +4 more sources

Structure-Activity Relationship of Flavonoids Active Against Lard Oil Oxidation Based on Quantum Chemical Analysis

open access: yesMolecules, 2008
In this study, the antioxidant activities of 15 flavonoids against lard oil oxidation were determined by using the Rancimat test. Quercetin, dihydromyricetin, luteolin and kaempferol showed the strongest antioxidant activity, with protection factor ...
Zheng-Xiang Ning   +3 more
doaj   +1 more source

Characteristics of Oxidative Storage Stability of Canola Fatty Acid Methyl Ester Stabilised with Antioxidants [PDF]

open access: yes, 2012
The storage effects on the oxidation characteristics of fatty acid methyl ester of canola oil (CME) were investigated in this study.CME stabilised with two antioxidants, i.e.2,6-di-tert-bytyl-p-cresol (BHT) and 6,6-di-tert-butyl-2, 2 ...
Goto, S. (Shinichi)   +4 more
core  

Quality evaluation of cold-pressed edible oils from Macedonia [PDF]

open access: yes, 2014
The chemical composition and quality of eight pure cold-pressed oils and two blend oils from Macedonia were examined in this work. The highest level of oleic acid was determined in apricot kernel oil and rapeseed oil with abundance of 70.9 and 59.2 ...
Kostadinovic Velickovska, Sanja   +4 more
core   +1 more source

Preservation of gallic acid and methyl gallate on purified Kilka fish oil oxidation by Rancimat [PDF]

open access: yesFood 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   +2 more sources

Oxidative Stability and Molecular Reactivity of Biodiesel from Castor and Cottonseed Oil Blends by Homogeneous and Heterogeneous Catalysis

open access: yesEnergy Technology, Volume 13, Issue 11, November 2025.
The oxidative stability of biodiesel from homogeneous and heterogeneous catalysis of castor/cottonseed oil blends is studied. Castor oil's ricinoleic acid improves oxidative stability, acting as a natural antioxidant. Yet, HT catalysis led to lower stability due to catalyst leaching.
Rômulo Batista Vieira   +7 more
wiley   +1 more source

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