首页|Electrochemical and spectroelectrochemical studies of four tanshinones from Salvia miltiorrhiza Bunge
Electrochemical and spectroelectrochemical studies of four tanshinones from Salvia miltiorrhiza Bunge
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NSTL
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维普
The spectra of four tanshinones in the potentiostatic reduction process,including tanshinone I,dihydrotanshinone Ⅰ,tanshinone ⅡA and cryptotanshinone,were investigated using spectroelectrochemical cell and UV spectrophotometer.Their cyclic voltammograms (CVs) were recorded with a glassy carbon electrode (GCE).The experiment results show that the antioxidant activity of these tanshinones,in the structure,where A,B and C rings connect through a single double bond,is weaker than that where A ring does not have double bond.Moreover,the increasing angle strain in the reduction process could enhance the antioxidant activity.In summary,the rank of antioxidant activities of these tanshinones,from weak to strong,is tanshinone I,dihydrotanshinone I,tanshinone ⅡA and cryptotanshinone.
Salvia miltiorrhiza BungeTanshinonesAntioxidant activitySpectroelectrochemistry
NETL
NSTL
万方数据
维普
