Results 11 to 20 of about 135,838 (246)

Estimation of the total antioxidant potential in the meat samples using thin-layer chromatography

Open Chemistry, 2020
There is limited literature on the antioxidative properties of food of animal origin. Measurements of antioxidative properties are usually performed using the reaction of reduction of colored 2,2-diphenyl-1-picrylhydrazyl (DPPH) radials.
Piszcz Paweł, Tomaszewska Magdalena, Głód Bronisław K.   +2 more
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Can aluminum, a non-redox metal, alter the thermodynamics of key biological redox processes? The DPPH-QH 2 radical scavenging reaction as a test case.

, 2021
The increased bioavailability of aluminum has led to a concern about its toxicity on living systems. Among the most important toxic effects, it has been proven that aluminum increases oxidative stress in biological systems, a controversial fact, however,
Jose , Lanuza, Xabier, Lopez, Veronica, Postils   +2 more
core   +1 more source

Determination of Antioxidants by DPPH Radical Scavenging Activity and Quantitative Phytochemical Analysis of Ficus religiosa

Molecules, 2022
The use of F. religiosa might be beneficial in inflammatory illnesses and can be used for a variety of health conditions. In this article, we studied the identification of antioxidants using (DPPH) 2,2-Diphenyl-1-picrylhydrazylradical scavenging activity
Siddartha Baliyan, Riya Mukherjee, Anjali Priyadarshini, Arpana Vibhuti, Archana Gupta, Ramendra Pati Pandey, Chung-Ming Chang   +6 more
doaj   +1 more source

ICH Validation of DPPH Assay Method: Some Interesting Medicinal Drugs

Eurasian Journal of Science and Engineering, 2020
Background and Aim: As part of our antioxidant plants screening project, we conducted a phytochemical study on their antioxidant activity to provide a standard and reliable assessment tool.
Fatiha El Babili, Nicole Linda-Mweze, Caroline Vincent, Romain Laleman, Arthur Hourugou   +4 more
doaj   +1 more source

Antioxidant Activity and Discrimination of Organic Apples (Malus domestica Borkh.) Cultivated in the Western Region of Romania: A DPPH· Kinetics–PCA Approach

Plants, 2021
Apple (Malus domestica Borkh.) is one of the most used fruit for beverages in Romania. The goal of the study was to evaluate the antioxidant activity and discrimination of various parts of organic and non-organic apple varieties cultivated in the western
Olimpia Alina Iordănescu, Maria Băla, Alina Carmen Iuga, Dina Gligor (Pane), Ionuţ Dascălu, Gabriel Stelian Bujancă, Ioan David, Nicoleta Gabriela Hădărugă, Daniel Ioan Hădărugă   +8 more
doaj   +1 more source

Determination of DPPH Radical Oxidation Caused by Methanolic Extracts of Some Microalgal Species by Linear Regression Analysis of Spectrophotometric Measurements

Sensors, 2007
The demonstrated modified spectrophotometric method makes use of the 2,2-diphenyl-1-picrylhydrazyl (DPPH) radical and its specific absorbance properties. Theabsorbance decreases when the radical is reduced by antioxidants.
Ulf-Peter Hansen, Andreas Ruser, Ralf Hintze, Sebastian Lippemeier, Klaus Heinrich Vanselow, Kai Marxen   +5 more
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Synthesis and DPPH Radical Scavenging Activity of Prenylated Phenol Derivatives

Molecules, 2012
The synthesis of twenty six prenylated phenols derivatives is reported. These compounds were obtained under mild conditions via Electrophilic Aromatic Substitution (EAS) coupling reactions between phenol derivatives containing electron-donor subtituents ...
Héctor Carrasco, Luis Espinoza, Marcela Carvajal, Cesar González, Alejandra Vergara, Lautaro Taborga, Evelyn Baeza, Karen Catalán, Mauricio Osorio, Jacqueline Aravena   +9 more
doaj   +1 more source

Synthesis, DPPH and ABTS Activity of Novel Furfuryl-Chalcone Derivatives

Sakarya Üniversitesi Fen Bilimleri Enstitüsü Dergisi, 2022
In this study, novel furfuryl-chalcone derivatives substituted sulfonyl chloride or sulphonamide were synthesized. Their antioxidant properties were investigated via DPPH and ABTS assays. All furfuryl-chalcones had high antioxidant properties. Among them,
Zuhal Şahin, Enes Akgün, Fatih Sönmez
doaj  

Potensi Antioksidan Rumput Laut Gracilaria verrucosa Dari Pantai Gunung Kidul, Yogyakarta

Jurnal Kelautan Tropis, 2019
Gracilaria verrucosa is red algae that has been widely used as an antioxidant. This research was conducted to test antioxidant activity, total phenolic content and bioactive compound of Gracilaria verrucosa obtained from Pok Tunggal Beach and Ngandong ...
Wahyu Febrianto, Ali Djunaedi, Suryono Suryono, Gunawan Widi Santosa, Sunaryo Sunaryo   +4 more
doaj   +1 more source

An Off-Line DPPH-GC-MS Coupling Countercurrent Chromatography Method for Screening, Identification, and Separation of Antioxidant Compounds in Essential Oil

Antioxidants, 2020
Essential oils are an important source of natural antioxidants and multiple methods have been established for evaluation of their overall antioxidant activity, however, the antioxidant activities of their compounds are less investigated.
Xiang Wang, Guang-Lei Zuo, Chao-Yue Wang, Hyun Yong Kim, Soon Sung Lim, Sheng-Qiang Tong   +5 more
doaj   +1 more source