Yan Guo-lan
2013
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0
Influential Citations
1
Citations
Journal
Chemical Research
Abstract
Thanks to its peculiar properties,magnesium ascorbyl phosphate(MAP) as a substitute of vitamin C(VC) is widely used as food additive.This research compares the ability of MAP and VC to scavenge superoxide anion radical(O2-·).Their ability to scavenge O2-· and their thermal stability were investigated in relation to storage at different temperature for different duration.Furthermore,their anti-oxidation ability was also examined in relation to storage at different temperature for different duration.Results show that the ability of MAP to scavenge O2-· is reduced by only about 20% after it is stored at 20 ℃ for 20 d,and in this case its half-life is 53 d.However,after being stored at 20 ℃ for 10 d,Vc nearly completely loses ability to scavenge O-2·.In the meantime,the reaction for MAP stored at different temperature for different duration to scavenge O2-· can be described with a first order dynamics equation,and its anti oxidation ability calculated based on the simulated equation well conforms to the experimental one.