Mechanistic and Kinetic Studies of the Radical Scavenging Activity of 5-O-Methylnorbergenin: Theoretical and Experimental Insights

2022 ◽  
Author(s):  
Thuc Dinh Ngoc ◽  
Thanh Nguyen Le ◽  
Thi Van Anh Nguyen ◽  
Adam Mechler ◽  
Nguyen Thi Hoa ◽  
...  
Keyword(s):  
Radical Scavenging Activity ◽  
Radical Scavenging ◽  
Kinetic Studies ◽  
Scavenging Activity

scholarly journals Kinetic Studies on Radical Scavenging Activity of Kaempferol Decreased by Sn(II) Binding

Molecules ◽  
2020 ◽  
Vol 25 (8) ◽  
pp. 1975 ◽  
Author(s):  
Zhi-Yin Yang ◽  
Ling-Ling Qian ◽  
Yi Xu ◽  
Meng-Ting Song ◽  
Chao Liu ◽  
...  
Keyword(s):  
Fruits And Vegetables ◽  
Radical Scavenging Activity ◽  
Radical Scavenging ◽  
Kinetic Studies ◽  
Oxidation Potential ◽  
Scavenging Activity ◽  
Antioxidant Efficiency ◽  
Dpph Scavenging ◽  
Scavenging Efficiency ◽  
Package Materials

Sn(II) binds to kaempferol (HKaem, 3,4′,5,7-tetrahydroxy-2-(4-hydroxyphenyl)-4H-1-benzopyran-4-one) at the 3,4-site forming [Sn(II)(Kaem)2] complex in ethanol. DPPH• scavenging efficiency of HKaem is dramatically decreased by SnCl2 coordination due to formation of acid inhibiting deprotonation of HKaem as ligands and thus reduces the radical scavenging activity of the complex via a sequential proton-loss electron transfer (SPLET) mechanism. Moderate decreases in the radical scavenging of HKaem are observed by Sn(CH3COO)2 coordination and by contact between Sn and HKaem, in agreement with the increase in the oxidation potential of the complex compared to HKaem, leading to a decrease in antioxidant efficiency for fruits and vegetables with Sn as package materials.

Phenolic constituents of Crithmum maritimum and their radical scavenging activity

Planta Medica ◽  
2009 ◽  
Vol 75 (09) ◽  
Author(s):  
S Ngom ◽  
L Breant ◽  
C Antheaume ◽  
C Minker ◽  
A Leick ◽  
...  
Keyword(s):  
Radical Scavenging Activity ◽  
Radical Scavenging ◽  
Scavenging Activity ◽  
Phenolic Constituents
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