Determination of the total phenolic content
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To determine the growing conditions and the time of harvesting and extracting conditions of Ganoderma lucidum with the highest polysaccharide content. Materials and methods: Using phenol-sulfuric acid reagent (concentrated) to determine the polysaccharide content, the growth stage and extraction conditions leading to the most polysaccharide content.
9p vistarlord 24-06-2023 6 2 Download
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In this study, a total of 22 seed propagated EC genotypes that naturally grown in the Akkışla district of Kayseri province located in the middle part of Turkey were assessed in terms of their morphological (fruit dimensions, fruit weight, the number of fruit per cluster, and cluster weight) and biochemical (soluble solids content, pH, and organic acids), bioactive (total phenolic content, total flavonoid content, and antioxidant activity) content in order to determine the superior ones.
10p lyhuyenthu 31-01-2023 6 2 Download
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The aim of this study is to determine the effects of different doses of melatonin (MEL) applications (0, 5, 10 µM) on certain biochemical characteristics of strawberry seedlings grown in calcareous stress conditions. The experiment was conducted in the pots filled with lime-added mixture at the rate of 1% and peat perlite at the rate of 1:1 with frigo seedlings belonging to “Albion” strawberry cultivar.
5p hanthienngao 30-11-2021 6 1 Download
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In this study, the total phenolic content (TPC), total flavonoid content (TFC), in vitro antioxidant capacity and individual phenolic compounds of Juniperus drupacea Labill berry and pekmez (molasses) were determined. Since pekmez was the only edible form of berry, the bioaccessibility of phenolic compounds and the antioxidant capacity of the pekmez were assessed following exposure to simulated gastrointestinal conditions.
11p hanthienngao 30-11-2021 9 0 Download
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The aim of this study was to determine the effect of different drying methods on the nutritional content and antioxidant activity of purslane. Two different purslane samples have been dried using four different methods (sun, vacuum, hot air, and freeze drying). Dried and fresh samples were analyzed for their dry matter, β-carotene content, chlorophyll a and chlorophyll b contents, total flavonoid content, total flavonol content, total phenolic content, %DPPH radical scavenge activity, metal chelating activity, and color.
10p hanthienngao 30-11-2021 10 2 Download
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This study was conducted to determine the effects of different drying methods and cold storage treatments on the postharvest quality and nutritional properties of P. ostreatus mushroom. In the study, six different treatments including natural drying, oven drying (60°C), microwave drying (450 W), storage at -18°C, 4°C and 10°C were evaluated. After drying and cold storage, pH value, ash, protein, color, total phenolic content, total flavonoid content, antioxidant activity and element contents in mushroom samples were detected.
15p hanthienngao 30-11-2021 45 1 Download
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In this study, the total phenolic contents and total antioxidant capacities of some commercial bitter melon products (powder, packaged powder, capsule, paste in olive oil), and of unripe and ripe fruits were determined by spectrophotometric and chromatographic methods. The total antioxidant capacities of unripe and ripe bitter melon samples, determined by using the CUPRAC (cupric reducing antioxidant capacity assay) and ABTS (2,2′-azino-bis(3-ethylbenzthiazolin-6-sulfonic acid))/HRP (horseradish peroxidase) methods, were 42.5 and 36.3 µmol TRE (Trolox equivalent) g–1, and 8.7 and 7.
11p tudichquannguyet 29-11-2021 8 1 Download
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In this study, we collected and prepared ethanol extracts from 30 vegetable and fruit by-products. The extracts were screened on antioxidant activities using three methods including determination of total phenolic content (TPC), DPPH free radical scavenging assay (DPPH assay), and ferric reducing/antioxidant power (FRAP) assay. The extracts prepared ginger skin (TN-17) and coffee sediment (TN-16) showed strong activity.
10p viuchinaga2711 25-10-2021 30 2 Download
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Phenolics are a class of chemical compounds consisting of a hydroxyl group bonded directly to an aromatic hydrocarbon group. There are two groups of phenolics - simple phenols and polyphenols. Polyphenols whose antioxidant activity have the ability to reduce or prevent damage caused by free radicals promote positive effects on human health [5]. Therefore, in this present study, we tried to determine the total phenolic content of powdered Crinum latifolium L. bulbs extract.
7p trinhthamhodang9 10-12-2020 16 2 Download
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Bitter gourd (Momordica charantia L.) has been used since long time as food and medicinal plant. This research study was performed to determine the antioxidant activity of the Bitter gourd chips by DPPH radial-scavenging activity and ABTS assay. Total phenolic content was measured by Folin-Ciocalteu reagent. The different MAP gases concentrations used for the packaging of chips were 100% N2: 0% CO2, 70% N2: 30 % CO2 and 50 % N2: 50 % CO2. The temperatures used for storage were at room temperature, 37οC and 45οC. The best result was shown by 100% N2: 0% CO2 package stored at room temperature.
7p nguaconbaynhay6 24-06-2020 19 1 Download
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The extracts from the aerial parts of Portulaca quadrifida have been reported to show the total flavonoid content, antioxidant and antibacterial activities.
6p vijiraiya2711 27-05-2020 17 2 Download
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In this paper, the influence of the extraction parameters—temperatures (60–80 °C), times (80–120 min), and solvent ratios (70:30–90:10) of water:ethanol were investigated using response surface methodology in order to determine the optimum extraction conditions that could produce maximum extraction yields of the phenolic compounds and the highest anti-radical activity of the C. nutans extract.
11p vijiraiya2711 27-05-2020 25 1 Download
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Elaeocarpus sphaericus is commonly known as Rudraksha belonging to family Elaeocarpaceae and Pelargonium zoanle is a perennial small shrub, belonging to family Geraniaceae are one of the oldest and popular medicinal plants, rich in antioxidants and phytonutrients. In this study, Methanolic leaf extract of E. sphaericus and root extract P.
9p kethamoi4 16-04-2020 26 3 Download
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The aim of this study was to determine the antioxidant and antibacterial property of Nelumbo nucifers (lotus) leaf extract. Total phenolic content and DPPH (2,2-diphenyl-1- picrylhydrozyl) scavenging methods were used to evaluate the antioxidant property of crude extract.
11p nguathienthan2 26-12-2019 23 1 Download
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This in-vitro study evaluates the antibacterial &antifungal action of aqueous & alcoholic extracts of new herbal vaginal formulation containing equal amounts of Symplocos racemosa Roxb. and Ficus glomerata Roxb. stem barks against gram positive and gram negative bacteria and candid fungus by using the methods of zone of inhibition and minimum inhibition concentration (MIC) to assess its efficacy in treating vaginitis. During phytochemical analysis, alkaloids, flavonoids, tannins and carbohydrates were found to be present in both extracts.
11p kethamoi2 15-12-2019 12 0 Download
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Multidrug-resistant bacterial strains are becoming a serious problem. Therefore, the application of natural antimicrobial agents from plant extracts combined with antibiotics to overcome this problem is of major importance. The antimicrobial activity of five plants (Rosemary, Marjoram, Mint, Dill and Neem) methanol extract prepared by ultrasonicassisted (UAE) combined with antibiotics (amoxicillin, doxycycline, gentamicin and difloxacin) against 41 Salmonella poultry isolates was tested using in vitro methods.
12p kethamoi2 14-12-2019 20 0 Download
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The use of cereal grains as sources of food for man is well known. Different food products are obtained from grains based on the processing technique and the type of cereal employed. Although the causes of malnutrition are many and diverse, inadequate intake of foods and essential nutrients is a major contributory factor and yet this subject is poorly researched in many developing countries including Nigeria. This research was conducted in Jigawa State Nigeria. Were a total of 1,500 questionnaires were administered and 1,250 retrieved.
11p nguaconbaynhay1 04-12-2019 29 2 Download
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Sweet chestnut (Castanea sativa Mill.) belongs to the family Fagaceae and sub family Castaneoideae. Bioactive components such as tannins are present in sweet chestnut in high proportion giving astringent bitter taste and reducing their palatability. Roasting reduces the anti-nutritional factors in chestnut. This study was conducted to compare the effects of pan and microwave roasting on physicochemical, functional, rheological and antioxidant properties of sweet chestnut. Antioxidant activity was determined using DPPH inhibition activity, reducing power, and total phenolic content.
7p trinhthamhodang1 16-11-2019 21 0 Download
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The different colors of rice are contributed by various phenolic compounds, which have various health benefits. However, phenolic compounds, which are mostly existed in rice bran and easily lost during milling. Therefore, the consumption of unpolished rice is recommended to prevent from many diseases. The objective of this study is to determine total phenolic and flavonoid contents, antioxidant capacity and diabetic enzyme inhibition potential of the extracts of the different unpolished colored rices
6p viathena2711 08-10-2019 9 1 Download
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In vitro antioxidant, antimicrobial, and antiproliferative activities of methanol, acetone, and ethyl acetate extracts of Sedum acre L. were determined. Their total phenolic contents as well as the concentrations of flavonoids were also evaluated.
9p vivant2711 01-02-2019 24 2 Download