Results 31 to 40 of about 75,591 (199)
Evaluation of Anti-Oxidant Activity of Lavandula angustifolia using DPPH Method [PDF]
Majallah-i dānishgāh-i ̒ulūm-i pizishkī-i Arāk, 2017 Background: Stress oxidative factors are known to causes diseases resulting from metabolic disorders. Therefore, preventing, or at least decreasing the amount of these factors may have a positive impact on prevention or improvement of the metabolic ...
Masoud Soheili +2 more
doaj
DPPH Radical Scavenging and Xanthine Oxidase Inhibitory Activity of Leaves
Natural Product Communications, 2011 From a methanol extract of the leaves of the Malian medicinal tree Terminalia macroptera, cis -polyisoprene ( 1 ), chebulic acid trimethyl ester ( 2 ), methyl gallate ( 3 ), shikimic acid ( 4 ), corilagin ( 5 ), rutin ( 6 ), narcissin ( 7 ), chebulagic ...
Anh Thu Pham +4 more
doaj +1 more source
Grasas y Aceites, 2010 This study aims to map the total antioxidant capacity (TAC) of 50 Greek olive oil samples from the 2005-2006 season according to production region and cultivar and to compare the 2, 2’-azino-bis (3-ethylbenzo-thiazoline-6- sulfonic acid (ABTS), 2, 2 ...
Katerina S. Minioti +1 more
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Jurnal Inovasi Pendidikan dan Sains, 2022 Penelitian ini bertujuan untuk menguji aktivitas antioksidan (E)-1-(4-klorofenil)-3-p-tolilprop-2-en-1-on (C1) dan (E)-1-(4-klorofenil)-3-(4-isopropilfenil)prop-2-en-1-on (C2).
Eti Meirina Brahmana +5 more
doaj +1 more source
Advances and Perspectives in Graphene‐Based Quantum Dots Enabled Neuromorphic Devices
Advanced Science, EarlyView.Graphene‐based QDs are zero‐dimensional carbon nanomaterials with pronounced quantum confinement and tunable electronic structures. Herein, we summarize their synthesis strategies and functionalization methods, and highlight their functional roles and operating mechanisms in devices, as well as recent advances in neuromorphic electronics. We anticipate
Yulin Zhen +9 more
wiley +1 more source
Advanced Science, EarlyView.ABSTRACT Infected diabetic wounds are sustained by a vicious cycle of hyperglycemia‐driven bacterial infection, persistent oxidative stress, and excessive inflammation, which collectively disrupt the ordered progression of tissue repair. Here, we engineered a stage‐adaptive Janus microneedle patch (MN‐FeSAC‐PPE) to enable a staged therapeutic process ...
Mengting Yin +13 more
wiley +1 more source
Advanced Science, EarlyView.An immunoregulatory hydrogel based on sodium ascorbate (SA)‐accelerated gelation and in situ self‐mineralization is prepared here. Such a hydrogel is constructed by mixing benzaldehyde‐ and cyanoacetate‐functionalized dextran with silver nitrate (AgNO3) and SA, enabling the ultrafast solidification and in situ self‐mineralization of silver ...
Xiaoya Ding +4 more
wiley +1 more source
Advanced Science, EarlyView.A sprayable near‐infrared‐activated nanoplatform incorporating MXene, ZnHCF nanozyme, and deferoxamine efficiently breaks the vicious cycle of diabetic wounds. Upon irradiation, interfacial electron transfer and photothermal effects enhance multi‐enzyme activity, enabling explosive ROS elimination, alleviation of hypoxia, and controlled DFO release ...
Jiahao Guo +5 more
wiley +1 more source
Flavanol Derivatives from Rhizophora stylosa and Their DPPH Radical Scavenging Activity
Molecules, 2007 A new acetylated flavanol, 3,7-O-diacetyl (–)-epicatechin (3), and seven known flavanol derivatives, (–)-epicatechin (1), 3-O-acetyl (–)-epicatechin (2), 3,3′,4′,5,7-O-pentaacetyl (–)-epicatechin (4), (+)-afzelechin (5), (+)-
Bin-Gui Wang +3 more
doaj +1 more source
Antioxidants, 2021 The 2,2-diphenyl-1-picrylhydrazyl (DPPH•) assay is widely used to determine the antioxidant activity of food products and extracts. However, the common DPPH• protocol uses a two-point measurement and does not give information about the kinetics of the ...
Lucrezia Angeli +4 more
doaj +1 more source