Global ETD Search
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 1169 for “"antioxidant"”.
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Antioxidant Nanoparticles as Delivery Systems
<p>The goal of the study was to develop antioxidant polymeric nanoparticles as a new delivery system for food and pharmaceutical applications. Natural antioxidants like alpha-tocopherol, vitamin C, and carnosine, are responsible to protect biological systems against free radicals attack. The …
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Antioxidant activity of Mn-salophen complex and its effects on antioxidant enzymes in Escherichia coli
Mn-salophen complex with superoxide-scavenging activity was prepared from manganese(III) acetate dihydrate and salophen in ethanol. Visible absorption spectrum of the red-brown solution exhibited a broad absorption band at 430 - 450 nm with two shoulders between 500 and 600 nm which were absent …
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DIFFERENTIATION-INDUCED CHANGES IN ANTIOXIDANT CAPACITY AND ANTIOXIDANT RESPONSE IN SH-SY5Y CELLS: ROLE OF NRF2
… reactive oxygen species are counterbalanced by antioxidant defense systems such as the Nrf2-ARE pathway, the primary regulator of endogenous antioxidant response. Whereas neuronal cells are post-mitotic and are particularly susceptible to oxidative stress because of high oxygen consumption, …
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DIFFERENTIATION-INDUCED CHANGES IN ANTIOXIDANT CAPACITY AND ANTIOXIDANT RESPONSE IN SH-SY5Y CELLS: ROLE OF NRF2
… reactive oxygen species are counterbalanced by antioxidant defense systems such as the Nrf2-ARE pathway, the primary regulator of endogenous antioxidant response. Whereas neuronal cells are post-mitotic and are particularly susceptible to oxidative stress because of high oxygen consumption, …
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Analysis of antioxidant behaviour in lubricating oils
… compare two screening tests for the analysis of antioxidants based on differential scanning calorimetry (DSQ and cyclic voltammetry (CV). The two techniques have been applied to the analysis the of the antioxidants, dioctyldiphenyl amine (DODPA) and Topanol '0' in three base oils. DSC is a …
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Antioxidant pathways and human leukaemia chemotherapeutic sensitivity
Cancer is uncontrolled cellular proliferation devoid of normal biological regulatory mechanisms. Therapeutic treatment of cancers relies on overcoming such proliferation, to allow cytotoxic destruction of cancer cells. Many of the recent therapeutic breakthroughs have been in the targeting of …
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Reactive processing of polyolefins using antioxidant systems
… HAEB) were synthesised and used as reactive antioxidants (AO's) for polypropylene (PP). These compounds were reacted with PP melt in the presence of low concentration of a free radical generator such a peroxide (reactive processing) to produce bound-antioxidant concentrates. The binding …
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Antioxidant and antihyperglycemic potential of soybean hydrolysates
… as a potential dietary source of natural antioxidants with important antihyperglycemic activity. This study was conducted to understand the effect of conventional and low-glycinin soy cultivars on the protein profiles and antioxidant capacity (AC) of their alcalase hydrolysates. The …
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Antioxidant responses of pea (Pisum sativum L.) protoplasts
… leaves were used to investigate the responses of antioxidant enzymes to oxidative stress. Two cultivars, Progress (tolerant) and Nugget (sensitive), that have differing resistance with respect to oxidative stress at the whole plant level were used. Sulfite and the superoxide generating herbicide, …
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The vasodilatory and antioxidant activities of polyphenolic substances
… the relationship between their vasodilatory and antioxidant activities and identify the major polyphenols present in green and black tea. Grape and tea based extracts were examined for their vasodilator activity in vitro using standard organ bath pharmacology. All extracts evoked biphasic …
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Study of Erythroid Antioxidant Depletion in Childhood Obesity
… mechanisms involved in the inactivation of antioxidant defenses in childhood obesity and its comorbidities, in order to facilitate the search for new therapeutic targets. To this end, we recruited a sample of children and adolescents with obesity, with and without insulin resistance, as well …
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The Antioxidant Function of Dithiophosphoryl Compounds in Rubbers
A quantitative study of the reaction between 0,0-dialkyldithiophosphoricacids and natural rubber latex, showed thata moderate yield of adduct was obtained using low concen~trations of the acids. High concentration of the acids causedcoagulation of the latex due to their acidity. Attempts tobind the …
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The antioxidant role of vitamin E in polyolefins
… subject to oxidation throughout their lifecycle. Antioxidants are generally incorporated in polymers to inhibit or minimise oxidative degradation. Hindered phenolic antioxidants are important stabilisers for polyolefins. However, hindered phenols undergo chemical transformations while performing …
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The hypolipidemic and antioxidant effects of soy constituents
Three studies were designed to investigate the effects of soy constituents on risk factors of cardiovascular disease in humans. The first two studies were human studies investigating the effect of soy protein on hyperlipidemia. The third study was an in vitro study investigating the effect of soy …
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Impact of Oxidized Corn Oil and Synthetic Antioxidant on Swine Performance, Antioxidant Status of Tissues, Pork Quality and Shelf Life Evaluation
… of the study was to evaluate the effect of antioxidant protected (AOX) or unprotected fresh or oxidized corn oil on animal performance, oxidative status of tissues, pork quality, shelf-life, and antioxidant activity of skeletal muscle of finishing pigs. The experimental design was a complete …
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Impact of oxidized corn oil and synthetic antioxidant on swine performance, antioxidant status of tissues, pork quality and shelf life evaluation
… of the study was to evaluate the effect of antioxidant protected (AOX) or unprotected fresh or oxidized corn oil on animal performance, oxidative status of tissues, pork quality, shelf-life, and antioxidant activity of skeletal muscle of finishing pigs. The experimental design was a complete …
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Part1. Relative antioxidant efficiency of synthetic and natural compounds; Part 2. Synthesis, characterization of cysteine oligopeptides and assessment of their antioxidant activity
… part of the research involved an assessment of antioxidant activity of synthetic antioxidants, such as Butylated hydroxytoluene (BHT), santoquin, tocopherols and extracts of naturally occurring materials such as green tea, ginger root, kelp etc. Assessment included the classical active oxygen …
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