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Showing 1 to 20 of 59 for “"total phenolic content"”.
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Quantification of Total Phenolic Content and Antioxidant Activity of Oat Cultivars Grown in South Dakota
… this study were to evaluate the correlation of total phenolic content (TPC) and antioxidant activity (AA %) of oat samples. High performance liquid chromatography (HPLC) was used to analyze the oat samples for avenanthramide content. The total phenolic content was measured using AOAC method …
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Legacy effects of cover crop monocultures and mixtures on soil inorganic nitrogen, total phenolic content, and microbial communities on two organic farms in Illinois
… influencing soil inorganic nitrogen (N) pools, total phenolic content through the release of secondary compounds, and by altering soil microbial communities. I analyzed soils collected during a two-year field study and aimed to determine how spring-sown cover crops (grass, legume, or Brassica …
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Evaluation of indigenous medicinal plants with potential antidepressant effects
… manage depression-like ailments, to estimate the total phenolic content and evaluate the in vitro antidepressant-like effects of these plants. A literature review of existing ethnobotanical, ethnopharmacological and phytochemical studies was conducted from which Artemisia afra Jacq. ex Willd., …
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Processing induced changes in phenolic concentration and antioxidant capacity of corn for production of corn flakes
… 1980s. This study was designed to examine how phenolics and antioxidant capacity change during processing of corn into flakes, and to evaluate the effects of processing condition, corn genotype, and growing year on phenolics, with the ultimate goal of improving the nutritional quality of corn …
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Phenolic composition and antioxidant activity of sweetpotatoes [Ipomoea batatas (L.) Lam]
The influence of numerous factors on sweetpotato phenolic content and antioxidant activity was determined. Simplified, robust, and rapid methodologies were developed to quantify total phenolics and individual phenolic acids in sweetpotatoes. Quantification of total phenolic content using …
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Manothermosonication (MTS) treatment of apple-carrot juice blend: effect on inactivation of Escherichia coli O157:H7 and quality attributes during storage
… conditions. Quality attributes such as brix, total phenolic content, titratable acidity, viscosity, antioxidant capacity, turbidity, pH, and color of the samples were compared. The MTS treatment helped to achieve 5 log reduction in apple-carrot blended juice in relatively short time, …
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Analysis of physio-chemical properties of Hungarian monofloral honey types
… pH, diastase activity, sugar & moisture content, proline content, electrical conductivity, total phenolic content. honey types are acacia honey, Sunflower honey, Forest honey, linden honey, rape honey collected from various counties of Hungary.
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High pressure processing (HPP) of kelulut honey (Sarawak): enhancement on the quality and alteration of prebiotic potential on lactobacillu
… to colour, HPP demonstrated good retention of total acidity, reducing sugar, total sugar and diastase activity. Astoundingly, HPP at 600 MPa/10 minutes managed to increase the antioxidant activity and total phenolic content (TPC) by 3.0% and 47.2% respectively. Furthermore, HPP-treated at 600 …
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The Effects of Cofermentation of Cider and Apple Pomace on Cider Attributes
<p>Phenolics are critical to the sensory attributes and health benefits of hard cider due to their contribution to the flavor, mouthfeel, and antioxidant activity. With the increase in demand for cider, the use of dessert apple varieties has become more common leaving ciders lacking in phenolics. …
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Investigation on the Antioxidant Capabilities of Spice Extracts in Inhibition of Long Chain Polyunsaturated Fatty Acids Oxidation and Cholesterol
… > ginger > turmeric. For the antioxidant and total phenolic study, without heating, the antioxidant activity (TEAC) values ranged from 0.18 to 0.60 µmol of trolox equivalent/gm of extract, with oregano the lowest and rosemary showing the highest activity. After heating, the antioxidant …
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A systematic study of the effect of ultrasound on food enzymes and bioactives in model and real food systems (strawberry puree)
… had a detrimental effect on anthocyanins, total phenolic content and antioxidant activity of strawberry puree. On the contrary, the application of US enhanced the antioxidant activity, and anthocyanin, and total phenolic content, in strawberry puree samples, as compared to those untreated …
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Analysis of phenolics and other phytochemicals in selected Malaysian traditional vegetables and their activities in vitro
… and vegetables, in particular flavonoids and phenolic compounds. Some plants have been used in traditional medicine for healing, ritual ceremonies and as health tonics or food supplements. Recent interest in the health-promoting properties of Malaysian traditional vegetables has been based on …
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Quality improvement of manuka honey through the application of high pressure processing
… on nutritional properties of honey, namely total phenolic content and antioxidant activity. Honey samples, contained in small pouches, were subjected to different pressures (200-600 MPa) at close to ambient temperatures (25-33°C) for different holding times (10 to 30 min). Thermal processing …
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Characterization of polyphenols in leaves of four desiccation tolerant plant families
… a period of oxidative stress. In this study the total phenolic content and the related antioxidant capacity of the plants leaf extracts were analysed.
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Elucidation of the components involved in the antioxidant activity of honey
… analyzed for sugar concentration, honey colour, total phenolic content, the level of brown pigments, and antioxidant activity in order to elucidate the main components involved in the antioxidant activity of honey. By employing size-exclusion chromatography in combination with activity-guided …
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Extraction of bioactive compounds from New Zealand Manuka leaves (Leptospermum scoparium) using emerging technologies
… Manuka extract was tested for its antioxidant, total phenolic content (TPC) and, antibacterial. Results were compared with ethanol and n-hexane extracts. The ethanolic extract possessed the highest amount of TPC (86.08±6.22 mg GAE/g DW) among tested extracts. Moreover, the extraction of TPC …
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Antimicrobial and antioxidant activity of crude extracts and fractions from stems and leaves of Tephrosia Lupinifolia
… + 0.01 mg/mL.Quantitative determination of the total phenolic and total flavonoid contents of the methanolic leaf, root and stem extracts was done using the Folin Ciocalteu method and aluminum chloride complex forming assays, with the results expressed in mg of gallic acid equivalents (GAE)/g of …
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Inactivation of foodborne pathogens by fruit wines
… was in the order of titratable acidity, alcohol content, pH, free sulfite concentration, anthocyanin content, total phenolic content, and tannin content. Scanning and transmission electron microscopic examinations of E. coli O157:H7 and S. Typhimurium after treatment with peach and cherry wine …
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Root restriction, under-trellis cover cropping, and rootstock modify vine size and berry composition of Cabernet Sauvignon
… of NRM canopies. Anthocyanin concentration and total phenolic content were increased by 20% and 19% respectively in RBG fruit. CC increased fruit-zone PPFD by 62%, and increased soluble solids and color compounds. The 420-A rootstock reduced potassium uptake, resulting in lower must potassium …
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