壳寡糖水杨醛系列希夫碱的抗氧化作用

摘要

用清除DPPH自由基法、超氧阴离子自由基法和还原能力的测定来探讨壳寡糖水杨醛系列希夫碱的抗氧化活性.结果表明,在0.1～1.0g· L-1的质量浓度范围内,壳寡糖水杨醛系列希夫碱对DPPH自由基的清除活性不强,而对超氧阴离子自由基的清除活性很强,也都有一定的还原力,而且壳寡糖水杨醛系列希夫碱的抗氧化活性比壳寡糖强.%The antioxidant activity of chitooligosaccharides salicylaldehyde schiff base series was evaluated by use of scavenging DPPH radical, superoxide anion radical and the determination of reducing power. The results showed that within the concentration of 0.1~1.0g·L-1 , their activity on scavenging DPPH radical is not strong, and the activity on scavenging superoxide anion radical is very strong. They also have certain reducing activity. Above all, chitooligosaccharides salicylaldehyde schiff base series have stronger antioxidant activity compared with chitooligosaccharides.