稻壳中黄酮提取物的抗氧化性质研究  

A Study on Antioxidant Activities of Flavonoided Extracts from Rice Hull

作　　者：蔡碧琼[1] 蔡珠玉[1] 张福娣[1] 黄明堦[1] 

机构地区：[1]福建农林大学生命科学学院,福建福州350002

出　　处：《江西农业大学学报》2010年第4期813-818,共6页Acta Agriculturae Universitatis Jiangxiensis

基　　金：福建省自然科学基金资助项目(B0510012);福建农林大学青年教师科研资助项目(06A11)

摘　　要：通过不同浓度的Vc、BHT(2,6-二叔丁基对-甲酚)和稻壳黄酮乙醇溶液的还原能力比较,对二苯代苦味酰自由基(DPPH·)、超氧阴离子自由基(O2·-)、羟自由基(·OH)的清除能力比较,以及在卵黄脂蛋白、猪油等不同体系中抗脂质过氧化的能力比较。实验结果表明:稻壳黄酮对DPPH·、O2·-、·OH都具有较强的清除能力,而且对多不饱和脂肪酸(PUFA)过氧化体系也有很强的抑制作用,其作用随着溶液浓度的增大而增强;从抑制猪油氧化实验可以看出,稻壳中黄酮提取物具有较强的抗脂质过氧化能力。但以上3者对不同的自由基和抗脂质过氧化体系表现出的抗氧化能力差异不尽相同。The oxidationresistant experiments were conducted with different concentrations of Vc,BHT and the flavonoids from rice hull,to compare their reducing power,scavenging activity on 1,1-diphenyl 2-picrylhydrazyl（DPPH·） ,superoxide radical（O2·） and hydroxyl radical（·OH） ,and their inhibiting capacity to peroxidation from livetin and lard oil.The results showed that rice hull flavonoids had a strong scavenging activity to DPPH·,O2·-,·OH,the inhibiting capacity of rice hull flavonodis to peroxidation from polyunsaturated fatty acid（PUFA） was strong,and its antioxidant activity increased with the solution concentrations.Moreover the experiment on the inhibiting capacity to lard oil oxidation proved that the flavonoids of rice hull have a better antilipid peroxidation ability.But their antioxidant activities are different in their abilities of scavenging series radical and inhibiting capacity to peroxidation .

关 键 词：稻壳 黄酮类物质 抗氧化性质 自由基 清除率 

分 类 号：S792.95[农业科学—林木遗传育种]