evaluation of antioxidant capacity and identification
Evaluation of Antioxidant Capacity and Identification
Evaluation of Antioxidant Capacity and Identification of Bioactive Compounds of Crude Methanol Extracts of Caesalpinia pulcherrima (L.) Swartz
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Evaluation of Antioxidant Capacity, Protective Effect
Evaluation of Antioxidant Capacity, Protective Effect on Human Erythrocytes and Phenolic Compound Identification in Two Varieties of Plum Fruit (Spondias spp.) by UPLC-MS by Karen L. Hernández-Ruiz 1 , Saul Ruiz-Cruz 1,* , Luis A. Cira-Chávez 1 , Laura E. Gassos-Ortega 1 , José de Jesús Ornelas-Paz 2 , Carmen L. Del-Toro-Sánchez 3 , Enrique Márquez-Ríos 3 , Marco A. López-Mata 4 and Francisco Rodríguez-Félix 3
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Evaluation of Antioxidant Capacity, Protective
Evaluation of Antioxidant Capacity, Protective Effect on Human Erythrocytes and Phenolic Compound Identification in Two Varieties of Plum Fruit (Spondias spp.) by UPLC-MS
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Evaluation of Antioxidant Capacity and Identification
The study was conducted to determine the antioxidant capacity, expressed as half maximal inhibitory concentration, IC 50, of Caesalpinia pulcherrima leaf, flower and seed methanol extracts, and their correlation to their total phenolic, flavonoid and triterpenoid contents. Thin layer chromatographic profiling of the methanol extracts was also conducted followed by ultra-performance liquid chromatography quadruple time-of-flight mass spectrometric analysis for the identification of ...
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Evaluation of Antioxidant Activity of Vetiver (Vetiveria
Antioxidant capacities of vetiver (Vetiveria zizanioides) oil were evaluated by two different in vitro assays: the DPPH• free radical scavenging assay and the Fe2+-metal chelating assay. Results showed that the vetiver oil (VO) possessed a strong free radical scavenging activity when compared to standard antioxidants such as butylated hydroxytoluene (BHT) and α-tocopherol.
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Identification of Phenolic Compounds and Evaluation
Evaluation of Antioxidant Activity: Rancimat Method This methodology verified that soybean oil without antioxidant, used as control, oxidized after an IP of 6.4 h. As extracts having antioxidant capacities or synthetic antioxidants are added to soybean oil, the IP rises, and the PF, calculated from difference between synthetic and tested antioxidants, rises above 1.0.
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Identification and evaluation of antioxidant components
Nine phenolics are identified from five Chimonanthus flowers, their contents and chemical structures are determined.. Ch.praecox flower is most abundant in secondary metabolites and has most potent antioxidant activity.. Flavonoids and coumarins are the two major types of substances with antioxidant capacity in all the five flowers.
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Evaluation of the Antioxidant Capacity and Phenolic
Therefore, the evaluation of antioxidant activities of extracts and fractions is considered an important step prior to the isolation of antioxidant phytochemicals they contain . Many phenolic compounds, particularly flavonoids, exhibit a wide range of biological effects, including antibacterial, antiviral, anti-inflammatory, anti-allergic, anti-thrombotic, and vasodilatory actions ( 5 ).
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Evaluation of phenolic profile and antioxidant capacity
Consistently, antioxidant capacity was highest in black rice and quinoa flours (34 mmol trolox equivalents 100 g −1), while anthocyanins were highest in black rice flour. Data showed a high correlation between phenolic content and both reducing and scavenging activities, with Pearson’s coefficient of 0.90 and 0.91, respectively.
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Standardized Methods for the Determination of Antioxidant
The antioxidant capacity is measured as the time of depressed light emission (t), which is arbitrarily measured at 10% recovery of light output. Chemiluminescence is characterized by very low emission intensity, tens to a few thousand counts per second in contrast to millions of counts for fluorescence.
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Evaluation of Antioxidant Capacity and Identification of Bioactive
Semi-quantitative determination of the antioxidant capacity of each crude methanol extract was visually detected by dot-blot method.Sharma V, Rajani GP. Evaluation of CaesalpiniapulcherrimaLinn. For antiinflammatory and antiulcer activities.
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Methods of measurement and evaluation of natural antioxidant
Moreover, the total antioxidant power is often more meaningful to evaluate health beneficial effectsvarious assays. This project will aid the identification and quantification of properties and.mination of antioxidant capacity of food constituents with some important advantages and
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Comparative evaluation of various total antioxidant capacity
Antioxidant capacity assays may be broadly classified as electron transfer (ET)- and hydrogen atom transfer (HAT)-based assays.This review intends to offer a critical evaluation of existing antioxidant assays applied to phenolics, and reports the development by our research group of a simple and
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Identification and evaluation of antioxidants in Japanese | PubFacts
Antioxidant capacities of the hydrophilic extracts of both cultivars tended to be higher in winter because of the increase in the contents ofPlease type a message to the paper's authors to explain your need for the paper. Paper: Identification and evaluation of antioxidants in Japanese parsley.
Send InquiryEvaluation of the Availability and Antioxidant Capacity of - MDPI
Evaluation of the Antioxidant Capacity and Phenolic. activity of plant extracts was expressed as IC50, which was defined as .. pro-oxidant due to its high reactivity. .. the ethanolic extract of Stiga orobanchiodes.
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13 Evaluation of antioxidant activity/capacity measurement methods
Measurement of Antioxidant Activity and Capacity offers a3 Evaluation of the antioxidant capacity of food samples: a chemical examination of the oxygen radical absorbance capacity assay 39 Eva Dorta, Eduardo Fuentes]Lemus, Hernan Speisky, Eduardo Lissi, and Camilo Lopez]Alarcon.
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Standardized Methods for the Determination of Antioxidant
From evaluation of data presented at the First International Congress on Antioxidant Methods inthere must be definitive recognition of mechanisms and identification of appropriate applications.Total Oxidant ScaVenging Capacity (TOSC): General Chem-istry. Developed by Winston et al.
Send InquiryIdentification of Phenolic Compounds and Evaluation of Antioxidant
Antioxidant activities were determined by DPPH and ABTS•+ assay. Identification of phenolic compounds was performed using high-performance liquidThese results showed that extracts of Euphorbia tirucalli L. have excellent antioxidant capacity and moderate antimicrobial activity.
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In vitro antioxidant capacity and free radical scavenging evaluation
The identification and quantification of bioactive components that contribute to free radical scavenging activity and its consequent ethnopharmcological effect may provideBouayed J, Djilani A, Rammal H, Dicko A, Younos C, Soulimani R. Quantitative evaluation of the antioxidant properties of Catha edulis.
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Antioxidant Capacity - an overview | ScienceDirect Topics
The antioxidant capacity of blood increases after consuming coffee and tea because antioxidants present in both are absorbed from the gastrointestinal tract and such compounds can be detected in blood.
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