Results 31 to 40 of about 10,967,477 (400)

Quantification of the Antioxidant Activity of Plant Extracts: Analysis of Sensitivity and Hierarchization Based on the Method Used

open access: yesAntioxidants, 2020
Plants have a large number of bioactive compounds with high antioxidant activity. Studies for the determination of the antioxidant activity of different plant species could contribute to revealing the value of these species as a source of new antioxidant
N. Chaves   +2 more
semanticscholar   +1 more source

Structure-antioxidant activity relationship of methoxy, phenolic hydroxyl, and carboxylic acid groups of phenolic acids

open access: yesScientific Reports, 2020
The antioxidant activities of 18 typical phenolic acids were investigated using 2, 2′-diphenyl-1-picrylhydrazyl (DPPH) and ferric ion reducing antioxidant power (FRAP) assays.
Jinxiang Chen   +5 more
semanticscholar   +1 more source

Antioxidant activity of propolis

open access: yesPesquisa Agropecuária Tropical, 2014
Propolis is a resinous substance collected by bees from many parts of plants and mixed with wax, pollen and salivary secretions. Its composition is complex and closely related to the vegetation features of each region.
Adriane Alexandre Machado De-Melo   +4 more
doaj   +1 more source

Redox Active Cerium Oxide Nanoparticles: Current Status and Burning Issues [PDF]

open access: yes, 2021
Research on cerium oxide nanoparticles (nanoceria) has captivated the scientific community due to their unique physical and chemical properties, such as redox activity and oxygen buffering capacity, which made them available for many technical applications, including biomedical applications.
arxiv   +1 more source

Formulation and Antioxidant Activity Test of Rice Bran Extract Cream from Two Varieties of White Rice

open access: yesMajalah Obat Tradisional, 2023
Rice bran extract contains high antioxidant compounds. Formulation and antioxidant activity testing of cream preparations containing rice bran extract has been carried out.
Wira Noviana Suhery   +4 more
doaj   +1 more source

Cerium (III) and (IV) containing mesoporous glasses/alginate beads for bone regeneration: bioactivity, biocompatibility and reactive oxygen species activity [PDF]

open access: yesMaterials for Biological Applications. 105, 109971. 2019, 2021
A very small number of biomaterials investigated for bone regeneration was reported as able to prevent the oxidative stress. In this study beads based on alginate hydrogel and mesoporous glasses (MG) containing different amounts of cerium oxides (Ce3+/Ce4+) exhibiting antioxidant properties were investigated as a good approach to mimic the action of ...
arxiv   +1 more source

Antioxidant Activity of 3-[N-(Acylhydrazono)ethyl]-4-hydroxy-coumarins

open access: yesMolecules, 2016
A series of 3-acylhydrazono-4-hydroxycoumarins were synthesized via condensation of 3-acetyl-4-hydroxycoumarin with appropriate hydrazides. The structures of the newly-synthesized compounds were characterized by spectral and elememental analysis or HRMS ...
Antigoni Kotali   +5 more
doaj   +1 more source

Recent Trend of Nanotechnology Applications to Improve Bio-accessibility of Lycopene by Nanocarrier: A Review [PDF]

open access: yesJournal of Food Chemistry and Nanotechnology 8(4): 162-180, 2022, 2023
Lycopene, rich in red, yellow, or orange-colored fruits and vegetables, is the most potent antioxidant among the other carotenoids available in human blood plasma. It is evident that regular lycopene intake can prevent chronic diseases like cardiovascular diseases, type-2 diabetes, hypertension, kidney diseases and cancer.
arxiv   +1 more source

GENOTOXICITY AND ANTIOXIDANT ENZYME ACTIVITIES INDUCED BY THE CAPTAN FUNGICIDE IN THE ROOT OF BELL PEPPER (Capsicum annuum L. var. grossum L. cv. Kandil)

open access: yesTrakya University Journal of Natural Sciences, 2019
In this study, we investigated the toxic effects of the captan fungicide by using morphological, physiological and cytological parameters in bell pepper (Capsicum annuum L. var. grossum L. cv. Kandil) root tissue. The seeds of bell pepper were germinated
Müge Saylan   +4 more
doaj   +1 more source

Effects of Key Components on the Antioxidant Activity of Black Tea

open access: yesFoods, 2023
Many components (such as tea polyphenols, catechins, theaflavins, theasinensins, thearubigins, flavonoids, gallic acid, etc.) in black tea have antioxidant activities.
Weiwei Wang   +5 more
doaj   +1 more source

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