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.
Results
Showing 1 to 20 of 32 for “"Natural antioxidants"”.
-
Evaluation of natural antioxidants
… partition coefficients (log P) of 53 phenolic antioxidants were measured by reversed-phase HPLC and calculated by log P prediction software. There was a very strong linear correlation between measured and calculated values (r=0.91). The importance of log P in determining antioxidant assay …
-
Honey as a Source of Natural Antioxidants
Dietary antioxidants might prevent oxidative damage to tissues and therefore protect against chronic diseases. Previous research demonstrated that honeys from various floral sources exhibit significant antioxidant activity, rendering honey effective as a food antioxidant. The objective of the …
-
Effects of Natural Antioxidants on Lipid Oxidation of Menhaden Oil
… a significant challenge for the food industry. Natural antioxidants are widely incorporated into foods and oils to prevent oxidation and extend shelf life. The goal of the study is to investigate the activity of novel antioxidants in menhaden oil and to develop optimum formulations containing …
-
Controlled Release of Natural Antioxidants from Polymer Food Packaging by Molecular Encapsulation with Cyclodextrins
Synthetic antioxidants have traditionally been added directly to food products in a single initial dose to protect against oxidation of lipids and generation of free radicals. Natural antioxidants have been shown to undergo loss of activity and become prooxidants at high concentrations; therefore, …
-
Effects of Natural Antioxidants on Motor and Cognitive Deficits in an Animal Model of Aging and Obesity and Dopaminergic-Like SH-SY5Y Cell Line
… age. Therefore, in this study, we explored natural antioxidants that may have the potential to combat rising oxidative stress and weakening of physiological systems, thereby improving motor and cognitive function of the older population. We supplemented the diet of middle-aged mice with …
-
Antioxidant Activity of Ampelopsis Grossedentata Crude Extract and its Major Component Dihydromyricetin
… the shelf life of many food products. Adding antioxidants to foods is the most common way to solve this problem. Reports on safety issues of synthetic food additives have raised consumer interest in "all natural" foods, without added antioxidants or with synthetic replaced with natural …
-
Characterization and Application of Peanut Root Extracts
… quality degradation. Manufacturers typically add antioxidants or purge a product's package of oxygen to inhibit oxidation and the resulting off-flavors. Synthetic antioxidants (e.g. BHT, BHA) and some natural antioxidants (e.g. α-tocopherol) have found widespread use in this application. …
-
The Efficacy of Using Natural Antioxidant Blends to Control Oxidative Rancidity in Headed and Gutted, Filleted, and Minced Rainbow Trout (Oncorhynchus mykiss) During Frozen Storage
… and gas chromatographic detection of aldehydes. Natural antioxidants, in particular those that contained citric and ascorbic acids, were effective at retarding the development of conjugated diene hydroperoxides and malonaldehyde (p<0.05). Furthermore, sensory evaluation indicated that treated …
-
Effect of Alpha-Tocopherol and Some Flavonoid Compounds on Inactivation of Peroxidase (Purified and Unpurified) of Selected Vegetables
The effect of natural antioxidants (alpha-tocopherol, quercetin, rutinic acid and chlorogenic acid) at four different concentrations (125, 250, 500 and 1000 mg%) on peroxidase activity of tomato, eggplant and carrot was determined. All antioxidants caused reduction in peroxidase activity of crude …
-
INVESTIGATION OF MONGOLIAN SEA BUCKTHORN ((Hippophae rhamnoides spp. Mongolica) - NUTRITIONAL STUDY -
… applications, given the increasing interest in natural antioxidants and functional foods. Investigated through both biological tests and chemical analysis. Drosophila melanogaster (fruit flies) were used in sugar manipulation experiments to simulate metabolic stress conditions. The sea buckthorn …
-
Antioxidant Nanoparticles as Delivery Systems
… 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 conjugation of vitamin C-vitamin E (EC) and alpha-tocopherol-carnosine (VECAR) were performed to …
-
Potential anti-oxidant benefits of rosemary extract on fry life response of cottonseed oil
… response of cottonseed oil with synthetic and natural antioxidants during frying of potato chips. Control cottonseed oil, cottonseed oil with synthetic antioxidant (TBHQ), and cottonseed oil with natural antioxidant (rosemary extract) was heated to a temperature of 370°F and 30 batches of …
-
Effect of grape seed extract on oxidative, color and sensory stability of pre-cooked, frozen, re-heated beef sausage model system
… process in meat products, synthetic and natural antioxidants have been successfully used. Grape (Vitis Vinifera) is of special interest due to its high content of phenolic compounds. Grape seed extract sold commercially as a dietary supplement, has the potential to reduce lipid oxidation …
-
Gastroduodeninės srities gleivinės oksidacinių procesų ir augalų tinktūrų poveikio eksperimentinis ir klinikinis įvertinimas /
… tend their attention on the use of the natural antioxidants in the clinical practice. In the study, the changes of oxidative system in the gastroduodenal mucosa of patients with gastric and duodenal ulcers are estimated and the effects of tinctures from the blossoms of horse chestnut …
-
Attività antiossidante dei capsinoidi in diversi modelli sperimentali di stress ossidativo.
… annum (sweet pepper) are a good source of natural antioxidants and one of this compound, capsiate the most important capsinoid, is present in great quantity in the fruits of a nonpungent cultivar called CH-19 Sweet. In this work it has been evaluated the antioxidant activity of vanillyl …
-
Neuroprotective Effects of Anthocyanins on Neuronal Death Induced by Inhibition of Bcl-2 and Oxidative Stress
… granule neurons (CGNs). Anthocyanins are natural antioxidants whose neuroprotective potential has yet to be examined in detail. Kuromanin and callistephin are anthocyanins derived from black rice and strawberries, respectively. Glutathione (GSH)-sensitive MOS and intrinsic apoptosis were …
-
Modified atmosphere packaging of ground turkey thigh meat
… The effect of fat level and effectiveness of natural antioxidants were evaluated. Product quality was determined semi-weekly by sensory, microbial, chemical, and instrumental analysis to evaluate rancidity, and sensory flavor changes. Thiobarbituric acid (TBA) tests were conducted to …
-
Antibacterial, antioxidant and phytochemical investigation of Acacia Arenaria, Aloe Esculenta and Pechuel-Loeschea Leubnitziae
Natural products present in medicinal plants are an important source of therapeutic agents and many research groups are currently screening different biological activities of plants. This study aimed to investigate the antibacterial, antioxidant properties and phytochemical analysis of Acacia …
-
Synthesis and evaluation of polyol based biolubricants from vegetable oils
… products were less stable. It is likely that natural antioxidants removed during purification of FAME and TMP esters contributed to the superior OSI value of the vegetable oil. The low temperature flow behaviour of TMP based biolubricants was determined between 298 K and 238 K using T2 …
-
Determination of Sensory Characteristics and Antioxidant Capacity of Pawpaw Pulp During Frozen Storage
… research has shown that there are extractable antioxidants within pawpaw pulp. Findings in this study show that total phenolic content was significantly higher in pawpaw pulp extracted with methanol, compared to chloroform, and remained constant during storage. Total Ferric Reducing Antioxidant …
Page 1 of 2