Results 1 to 10 of about 57,523 (263)

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

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   +2 more sources

DPPH Radical Scavenging Assay

Processes, 2023
Today, there is an increasing interest in antioxidants, especially to prevent the known harmful effects of free radicals in human metabolism and their deterioration during processing and storage of fatty foods. In both cases, natural-source antioxidants are preferred over synthetic antioxidants.
Gulcin I, Saleh Alwasel, Alwasel Saleh H   +2 more
exaly   +3 more sources

Dimer of the DPPH Stable Radical

ACS Omega
Although the DPPH (2,2-diphenyl-1-(2,4,6-trinitrophenyl)-hydrazyl) radical is known for its indefinite stability, both in solid and in solution, and therefore no dimerization reaction occurs, the DPPH-dimer has been obtained by an alternative synthesis.
Adela F. Dobre, Cecilia Lete, Victor E. Kuncser, Nicusor Iacob, Augustin M. Madalan, Gabriela Ionita, Mai Harada, Yasutaka Kitagawa, Petre Ionita   +8 more
doaj   +3 more sources

Synthesis and DPPH Radical Scavenging Activity of Prenylated Phenol Derivatives [PDF]

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   +5 more sources

Novel DPPH Radical Scavengers, Bisorbicillinol and Demethyltrichodimerol, from a Fungus

Bioscience, Biotechnology and Biochemistry, 1998
In our screening program for antioxidants with DPPH radical scavenging activity, we isolated four yellowish compounds from the fermentation broth of Trichoderma sp. USF-2690 strain isolated from a soil sample: two were novel compounds designated bisorbicillinol (1) and demethyltrichodimerol (2), and two were known compounds bisvertinolone (3) and ...
Akira Hirota, Hirota Akira, Abe Naoki
exaly   +3 more sources

The Chemistry of DPPH· Free Radical and Congeners [PDF]

International Journal of Molecular Sciences, 2021
Since the discovery in 1922 of 2,2-diphenyl-1-(2,4,6-trinitrophenyl) hydrazyl stable free radical (DPPH·), the chemistry of such open-shell compounds has developed continuously, allowing for both theoretical and practical advances in the free radical chemistry area.
openaire   +2 more sources

Antioxidative Properties of Machine-Drip Tea Prepared with Citrus Fruit Peels Are Affected by the Type of Fruit and Drying Method

Foods, 2022
Citrus peels are generally discarded as waste, although they are rich sources of health-promoting compounds. This study investigated the properties of citrus peels for development as a potential functional tea ingredient. Three citrus peel powders (DCPPs,
Beom-Gyun Jeong, Yu-Jeong Gwak, Jeong Kim, Won-Ho Hong, Su-Jin Park, Md. Atiqual Islam, Jiyoung Jung, Jiyeon Chun   +7 more
doaj   +1 more source

Optimization and production of protein hydrolysate containing antioxidant activity from tuna cooking juice concentrate by response surface methodology

Fisheries and Aquatic Sciences, 2022
To optimize the hydrolysis conditions in the production of antioxidant hydrolysates from tuna cooking juice concentrate (TC) to maximize the 2,2-diphenyl-1-picrylhydrazyl (DPPH) radical scavenging activity, TC containing 48.91% protein was hydrolyzed ...
Mookdaporn Kiettiolarn, Lalitphan Kitsanayanyong, Jirawan Maneerote, Sasimanas Unajak, Pramvadee Tepwong   +4 more
doaj   +1 more source

Scavenging of DPPH by Persistent Free Radicals in Carbonized Particles

Advanced Sustainable Systems, 2023
AbstractPersistent free radicals (PFR) in carbonized particles may play a role in degradation of environmental compounds. The influence of PFR is evaluated in various carbonized particles on their radical scavenging efficiency upon the common radical indicator 2‐2‐diphenyl‐1‐picrylhydrazyl (DPPH).
Karin H. Adolfsson, Ping Huang, Monika Golda‐Cepa, Huan Xu, Andrzej Kotarba, Minna Hakkarainen   +5 more
openaire   +3 more sources

Antioxidant Components and Antioxidant Activity of Tibetan Propolis and Its Simulated Digestive Juices

Shipin gongye ke-ji, 2023
To evaluate the antioxidant activity and potential of propolis, Tibetan propolis and its simulated digestive juice were analyzed for its chemical composition (contents of total phenolics (TPC) and total flavonoids (TFC)), reducing power and antioxidant ...
Shuo ZHANG, Fang WANG, Lin DU, Wushuang PAN   +3 more
doaj   +1 more source