Results 31 to 40 of about 142,387 (205)

Evaluation of Total Flavonoid, Total Phenolic Contents, and Antioxidant Activity of Strychnobiflavone

Indonesian Journal of Chemistry, 2020
This work evaluates the antioxidant activity of strychnobiflavone due to the increasing demand of the antioxidant agents day by day. Various in vitro antioxidants assays such as 2,2-diphenyl-1-picrylhydrazyl (DPPH) and 2,2'-azino-bis(3-ethylbenzothiazoline-6-sulfonic acid) (ABTS) were used to investigate the antioxidant activity of strychnobiflavone ...
Ullah, Sana, Hyun, Chang-Gu
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Correlation Analysis of Antioxidant Activities with Tannin, Total Flavonoid, and Total Phenolic Contents of Nutmeg (Myristica fragrans Houtt) Fruit Precipitated by Egg white

Borneo Journal of Pharmacy, 2021
The nutmeg (Myristica fragrans) flesh extract has a strong antioxidant activity. Therefore, M. fragrans flesh can be developed for functional drinks which are sources rich in antioxidants good for the prevention and treatment of diseases such as cancer ...
Irma Antasionasti, Olvie Syenni Datu, Utami Sasmita Lestari, Surya Sumantri Abdullah, Imam Jayanto   +4 more
doaj   +1 more source

Total Phenolic Content and Antioxidant Capacity of Different Parts of Cucumber (Cucumis sativus L.)

Acta Universitatis Cibiniensis. Series E: Food Technology, 2018
The aims of this research were to estimate the polyphenol content and antioxidant capacity from different parts of cucumber. The antioxidant activity was investigated using 1,1-diphenyl-2-picrylhydrazyl (DPPH) and ferric reducing antioxidant power (FRAP),
Yunusa Alkasim Kabiru, Dandago Munir Abba, Ibrahim Sa’adatu Mukhtar, Abdullahi Nura, Rilwan Abdulrashid, Barde Aminu   +5 more
doaj   +1 more source

Influence of Solvent Polarity and Conditions on Extraction of Antioxidant, Flavonoids and Phenolic Content from Averrhoa bilimbi [PDF]

, 2014
This paper presents the influence of solvent polarity and extraction conditions on the extraction of total flavonoid, total phenolic and antioxidants from Averrhoa bilimbi.
Jolius, Gimbun, M. M., Yusoff, Norlia, Muhamad, Siti Aishah, Muhmed   +3 more
core   +1 more source

Determination of flavonoids and total polyphenol contents in commercial apple juices [PDF]

Czech Journal of Food Sciences, 2018
We propose a sensitive and selective spectrofluorimetric method for the determination of flavonoids as expressed in 'quercetin equivalent' in apple juices. The method is based on the strong emission of the aluminium(III)-quercetin complex at 480 nm with excitation at 420 nm, and it is successfully applied for the determination of flavonoids in ...
Pavun, Leposava, Uskoković-Marković, Snežana, Jelikić-Stankov, Milena, Đikanović, Daniela, Đurđević, Predrag   +4 more
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DETERMINATION OF FLAVONOIDS IN CITRUS FIBER AND THE IMPACT OF PROCESSING METHOD ON TOTAL PHENOLIC CONTENT, TOTAL FLAVONOID CONTENT, TOTAL CAROTENOID CONTENT AND OXYGEN RADICAL ABSORBANCE CAPACITY

Gıda, 2018
The objective of this study is to evaluate the presence of flavonoids in citrus fıber using reverse-phase high-pressure liquid chromatography (RP-HPLC). In this study, we also investigate the effect of regular and hot-washing preparations on total polyphenol content (TPC), total flavonoid content (TFC), oxygen radical absorbance capacity (ORAC) and ...
Ayça GEDİKOĞLU, Andrew Douglas CLARKE, İngolf GRUEN   +2 more
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Preliminary phytochemical screening and antioxidant activity of Annona deceptrix (Westra) H. Rainer an endemic and endangered species of Ecuador [PDF]

Brazilian Journal of Biology
Annona deceptrix (Westra) H. Rainer belongs to the Annonaceae family which is known to have bioactivities such as antioxidant, antimicrobial, anticancer, anti-inflamatory, pesticide, among others. A. deceptrix ethanolic seed and leaf extracts obtained by
M. Pinoargote-Chang, G. A. Correa-Londoño, D. Segovia-Cedeño, J. P. Arias-Echeverri   +3 more
doaj   +1 more source

Antioxidant Activity and Total Phenolic/Flavonoid Contents of Phlomis pungens L.

Hacettepe Journal of Biology and Chemistry, 2017
Dikici, Emrah (Aksaray, Yazar)
IŞIK, Mesut, DİKİCİ, Emrah, TOHMA, Hatice, KÖKSAL, Ekrem   +3 more
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Optimization of extraction conditions of phytochemical compounds and anti-gout activity of euphorbia hirta l. (Ara Tanah) using response surface methodology and Liquid Chromatography-Mass Spectrometry (LC-MS) analysis [PDF]

, 2019
Gout is a common disease affected most of the people due to the elevation of uric acid in the blood. Flavonoid and phenolic compounds are reported to exert the anti-gout activity of medicinal plants. Hence, this study aimed at optimizing the extraction
Abdullah, Norazlin, Abu Bakar, Fazleen Izzany, Abu Bakar, Mohd Fadzelly, Endrini, Susi, Fatmawati, Sri   +4 more
core   +1 more source

Validation of Spectrophotometric Methods for the Determination of Total Polyphenol and Total Flavonoid Content

Journal of AOAC INTERNATIONAL, 2017
Abstract The aim of this study was to validate spectrophotometric methods for the measurement of total polyphenol (TP; via the Folin–Ciocalteu method) and total flavonoid (TF) content [via the aluminum chloride (AlCl3) method]. Validation parameters of these methods were determined, including linearity, sensitivity, precision (intra ...
Matić, Petra, Sabljić, Marija, Jakobek, Lidija   +2 more
openaire   +2 more sources