摘要
以油菜蜂花粉黄酮醇苷组分为原料,以还原力和DPPH自由基清除率为指标研究黄酮醇苷在化学模拟体系中的抗氧化活性。结果表明,油菜蜂花粉黄酮醇苷的抗氧化活性不及其苷元成分。以CCl4制备小鼠脂质过氧化损伤模型,通过体内自由基发生体系进一步研究花粉黄酮醇苷的抗氧化作用,并对可能的作用机制进行探讨。结果显示:油菜蜂花粉黄酮醇苷组分能够显著地降低脂质过氧化小鼠肝匀浆和血清中MDA含量,提高小鼠SOD活性和总抗氧化能力(T-AOC),对脂质过氧化损伤有很好的保护作用,原因可能是体内有关酶系可将黄酮醇苷水解使其游离出酚羟基而发挥作用。本研究进一步肯定了油菜蜂花粉黄酮醇苷对机体氧化损伤的保护作用。
Flavonoid glycosides were prepared from rape bee pollen,and their ability to scavenge DPPH free radicals and reducing power in simulated chemical systems were determined. The antioxidant activity of the extracted flavonoid glycosides was not as strong as that of kaempferol or quercetin. The antioxidant activity of the extracted compounds in vivo against CCl4-induced lipid peroxidation in mice was investigated,and the antioxidant mechanisms were also elucidated. The results showed that the extract could significantly inhibit the generation of MDA in liver,and increase the level of T-AOC in liver and serum. The possible antioxidant mechanism was the generation of flavonoid aglycone with plentiful antioxidant phenolic groups due to the hydrolysis of flavonoid glycosides by in vivo relevant enzymes. Therefore,flavonoid glycosides derived from rape bee pollen had a good protective effect against in vivo oxidative damage.
出处
《食品科学》
EI
CAS
CSCD
北大核心
2010年第19期359-362,共4页
Food Science
基金
农业部公益性行业(农业)科研专项(nyhyzx07-041)
国家现代农业(蜂)产业技术体系建设专项(NYCYTX-43)
中国农业科学院科研经费项目
关键词
油菜蜂花粉
黄酮醇苷
抗氧化活性
脂质过氧化
rape bee pollen
flavonoid glycosides
antioxidant activity
lipid peroxidation
