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Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 80 for “"oxidative stability"”.
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Oxidative stability of Menhaden/Soybean oil blends
With the approval of menhaden oil pending, the food industry is trying to incorporate marine oils high in omega-3 fatty acids into food systems. The main problem obstructing its use as a food ingredient is fishy/painty flavors which occur with low levels of oxidation. The purpose of this study was …
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Some Aspects of the Oxidative Stability of Cis-1, 4-Polyisoprene Vulcanizates
… technique has been used to determine the thermal oxidative behaviour of vulcanizates prepared from unstabilized cis-1,4- polyisoprene. Initially the effect of specimen thickness was investigated to ensure that diffusion controlled oxidation did not occur during the course of the oxygen uptake …
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Oxidative Stability of Conjugated Linoleic acid rich Soy Oil obtained by Heterogeneous Ruthenium Catalysis
… by heterogenous catalysis but no studies of its oxidative stability have been reported. CLARSO and soy oil primary and secondary oxidation products were measured at 50oC in the dark. The CLARSO was less stable than soy oil but adsorption bleaching improved its oxidative stability. However, …
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Studies on the Quality of Soybean Oil: Extraction Method, Soybean Type, and Oxidative Stability
… soybeans (U.S. grades #2 and #3, respectfully). Oxidative stabilities of different soybean oils, as measured by the Oxidative Stability Instrument (OSI), peroxide value development, and headspace volatile development indicate the oil produced from the lower quality common soybeans (U.S. grade #3) …
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Effect of Grape Seed Extract on Oxidative Stability of Meat Systems and a Model System
… 0.02% exhibited the highest degree of control of oxidative rancidity in refrigerated cooked beef and pork patties and in frozen raw beef and pork patties, but not in the model system. WS 0.02% showed an intermediate lipid oxidation delay while OR 0.02% showed almost none, only exhibited a little …
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IMPACT OF ANIMAL DIET AND MEAT PREPARATION ON FATTY ACID COMPOSITION AND OXIDATIVE STABILITY OF PORK
In het kader van de optimalisatie van de kwaliteit en de gezondheidswaarde van onze voeding, is er grote belangstelling voor het verhogen van de inhoud van langketen n-3 polyonverzadigde vetzuren (n-3 PUFA) en voor het beschermen tegen oxidatie van dierlijke voedingsproducten. Verschillende …
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A comparative study of the thermal oxidative stability of high oleic acid sunflower and polyunsaturated soybean oil blends
The thermal oxidative stability was evaluated for 7 high oleic acid sunflower (HOSO) and polyunsaturated soybean oil (PUSB) blends ranging from 0.0% to 100.0% of each vegetable oil. Each blend was evaluated in quadruplicate over an eleven day period with 300 minutes of heating at 180°C per day. …
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Oxidative stability and ignition quality of algae derived methyl esters containing varying levels of methyl eicosapentaenoate and methyl docosahexaenoate
… for biodiesel. For example, it is known that oxidative stability and cetane number decrease with increasing levels of LC-PUFA. However, these same LC-PUFA fatty acids, such as eicosapentaenoic acid (EPA: C20:5) and docosahexaenoic acid (DHA: C22:6) are known to have high nutritional value …
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The use of model compounds to investigate the influence of fuel composition on the thermo-oxidative stability of fame/diesel blends
… diesel. Biodiesel, however, exhibits lower stability compared to petroleum diesel. Small differences in fuel properties such as component concentration or total acidity can lead to the formation of deposits which can reduce engine performance and increase maintenance requirements and costs. …
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Effects of Xanthan/Locust Bean Gum Mixtures on the Physicochemical Properties and Oxidative Stability of Whey Protein Stabilized Oil-In-Water Emulsions
… levels of omega-3 PUFA is very susceptible to oxidative deterioration during storage. The objective of this study was to investigate the effect of xanthan gum (XG)-locust bean gum (LBG) mixtures on the physicochemical properties of whey protein isolate (WPI) stabilized oil-in-water (O/W) …
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The Study of Variations in the Properties of Biodiesel on Addition of Antioxidants
… onset temperature, oxidation induction time, oxidative stability, thermal stability, crystallization onset temperature and moisture retention properties of the biodiesel, with and without antioxidants have been studied. Antioxidants like BHT, BHA, PrG, Vit E and Vit C were added to the …
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Synthesis, Processing, and Properties of Silicon-Containing Phthalonitrile Resins
… for hybridization due to their high thermal stability and glass transition temperatures and their need for improved long-term oxidative stability and toughness. In this work phenyl-substituted organosilicon linkages were incorporated into PN monomers to investigate their effect on the …
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Evaluation of Xanthan/Enzymatically Modified Guar Gum Mixtures in Oil-in-Water Emulsions
… fatty acids into foods. The thermodynamic instability of oil and water, and high susceptibility of unsaturated fatty acids to oxidation lead to physical and oxidative stability in oil-in-water emulsions. These instability processes are generally controlled by incorporating proteins and …
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Synthesis and evaluation of polyol based biolubricants from vegetable oils
… biolubricant from vegetable oils with excellent oxidative stability and low temperature flow properties. In the first study, a strong positive correlation was observed between saturated fat content and melting point while the content of polyunsaturated fatty acids (PUFA) was negatively correlated …
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Development of Biolubricants from Vegetable Oils for Non-Internal Combustion Engine Applications
… ability to provide superior lubrication, thermal stability, and compatibility with various metals. The presence of unsaturated free fatty acids in the carbon chain of triglycerides and tertiary β-hydrogen group in the glycerol backbone causes low thermal and oxidative stability. Thus, this study …
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Catalytic and Biological Applications of Benzoxaborolones
… the consequences of this cyclization on the oxidative stability of the boronic acid. The stereoelectronic effects present in the oxaborolone ring destabilize the oxidation transition state by reducing electron donation from the cyclic oxygen to the developing p orbital on boron, leading to an …
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ΜΕΛΕΤΗ ΤΗΣ ΟΞΕΙΔΩΤΙΚΗΣ ΣΤΑΘΕΡΟΤΗΤΑΣ ΤΟΥ ΕΛΛΗΝΙΚΟΥ ΠΑΡΘΕΝΟΥ ΕΛΑΙΟΛΑΔΟΥ ΚΑΙ Η ΣΗΜΑΣΙΑ ΤΗΣ ΣΤΗ ΔΙΑΜΟΡΦΩΣΗ ΤΗΣ ΕΜΠΟΡΙΚΗΣ ΑΞΙΑΣ ΤΟΥ ΠΡΟΙΟΝΤΟΣ
A NEW, SIMPLE AND FAST METHOD FOR MEASURING THE OXIDATIVE STABILITY OF VIRGIN OLIVE OIL BY USING CHEMICAL AND STATISTICAL METHODS. FIGURES AND TABLES ARE INCLUDED FOR CONSUMPTION, PRODUCTION, IMPORTATIONS AND EXPORTATIONS OF OLIVE OIL FOR GREECE, E.E.C AND OTHER COUNTRIES OF THE WORLD.
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Microencapsulation of an omega-3 polyunsaturated fatty acid source with polysaccharides for food applications
… ω3 PUFA sources is one means of improving their stability. In this work, ω3 PUFA microcapsules were prepared by spray drying with chitosan and blends of chitosan, high-amylose starch, and pullulan as wall materials. The primary objectives of this research were (1) to evaluate the effect of …
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Stabilization of linseed oil for use in aquaculture feeds
… or encapsulation of linseed oil on the oxidative stability of linseed oil and the effect on growth and fatty acid composition of rainbow trout fed these products. Four diets differing only in their lipid sources were prepared by cold extrusion: 1) fish oil (FO), 2) linseed oil (LO), 3) …
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Effect of dietary fats and antioxidants on the frozen storage life of cooked pork products
… of this study were: 1) to investigate the oxidative stability of bacon manufactured from pork obtained from pigs fed a diet containing a combination of vitamin E (10 mg or 200 mg α-tocopheryl acetate per kilogram of feed) and fishmeal (0% or 5%) and processed with wood smoke only or with a …
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