Citation:
LI Yan, GONG Shilei, CHE Ying, JIN Li'e, Yan Guolan. Hydroxyl Radical Scavenging Activity and Kinetics of Vitamin C[J]. Chinese Journal of Applied Chemistry,
;2015, 32(8): 948-954.
doi:
10.11944/j.issn.1000-0518.2015.08.140427
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For humanbeings,radicals scavenging plays an important role for maintaining the fundamental physiological and anti-ageing need.Comparison for competing scavenging ability of Vitamin C (VC) with salicylic acid gives optimal scavenging condition for VC.By fitting the Alberty equation,the maximum46.23% clearance of·OH by VC reached when VC concentration is 4.54 mmol/L at 47℃ for 90 min,and the maximum reaction rate is 0.11 mmol/(L·min).The dissociation constant for salicylic acid and VC is 30.2 mmol/L and 1.2×10-3mmol/L,respectively.The experimental data are well-fitted with relative error of 1.66%~5.40%.This is helpful for the effective and scientific usage of VC.
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Keywords:
- hydroxyl radical,
- ascorbic acid,
- clearance rate,
- reaction kinetics
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