Kinetic Studies on Radical Scavenging Activity of Kaempferol Decreased by Sn(II) Binding
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Kinetic Studies on Radical Scavenging Activity of Kaempferol Decreased by Sn(II) Binding. / Yang, Zhi-Yin; Qian, Ling-Ling; Xu, Yi; Song, Meng-Ting; Liu, Chao; Han, Rui-Min; Zhang, Jian-Ping; Skibsted, Leif H.
In: Molecules, Vol. 25, No. 8, 1975, 2020.Research output: Contribution to journal › Journal article › Research › peer-review
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TY - JOUR
T1 - Kinetic Studies on Radical Scavenging Activity of Kaempferol Decreased by Sn(II) Binding
AU - Yang, Zhi-Yin
AU - Qian, Ling-Ling
AU - Xu, Yi
AU - Song, Meng-Ting
AU - Liu, Chao
AU - Han, Rui-Min
AU - Zhang, Jian-Ping
AU - Skibsted, Leif H.
PY - 2020
Y1 - 2020
N2 - Sn(II) binds to kaempferol (HKaem, 3,40,5,7-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.
AB - Sn(II) binds to kaempferol (HKaem, 3,40,5,7-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.
KW - Kaempferol
KW - Metal-flavonoid complex
KW - Radical scavenging
KW - Sn(II)
U2 - 10.3390/molecules25081975
DO - 10.3390/molecules25081975
M3 - Journal article
C2 - 32340303
AN - SCOPUS:85083782016
VL - 25
JO - Molecules
JF - Molecules
SN - 1420-3049
IS - 8
M1 - 1975
ER -
ID: 242656161