人参研究
人參研究
인삼연구
RENSHEN YANJIU
2011年
4期
20-23
,共4页
朱启光%郑友兰%韩佳宏%蔡恩博%徐蕊%郝旭梅%王慧珠
硃啟光%鄭友蘭%韓佳宏%蔡恩博%徐蕊%郝旭梅%王慧珠
주계광%정우란%한가굉%채은박%서예%학욱매%왕혜주
大叶蟹甲草%抗氧化%总酚%相关性
大葉蟹甲草%抗氧化%總酚%相關性
대협해갑초%항양화%총분%상관성
Cacalia firma kom.%Antioxidant%Total phenolics%Relativity
目的研究大叶蟹甲草不同萃取部位的抗氧化活性。方法采用ABTS、DPPH自由基及还原性反应体系,利用分光光度法测定大叶蟹甲草的总提液、乙酸乙酯层、正丁醇层和石油醚层在不同浓度下的抗氧化能力及其总酚含量。结果大叶蟹甲草的不同萃取部位对AB'IS、DPPH自由基均具有较强的清除能力及还原能力,其结果与浓度呈良好的量效关系。其中乙酸乙酯层抗氧化能力最强,在浓度为0.62mg/mL时,对ABTS自由基的最大清除率为91.57%,对DPPH·的最大清除率为94.87%,与同浓度VC的清除率接近,且其IC50分别为0.066mg/mL、0.004mg/mL,测得乙酸乙酯层总酚含量最高,达10.45%。大叶蟹甲草具有较好的抗氧化能力,其中乙酸乙酯层抗氧化能力最显著,与总酚含量有较大的相关性,同时该结果也客观地反映了DPPH法、ABTS-+法及还原性法测定大叶蟹甲草抗氧化活性的准确性。
目的研究大葉蟹甲草不同萃取部位的抗氧化活性。方法採用ABTS、DPPH自由基及還原性反應體繫,利用分光光度法測定大葉蟹甲草的總提液、乙痠乙酯層、正丁醇層和石油醚層在不同濃度下的抗氧化能力及其總酚含量。結果大葉蟹甲草的不同萃取部位對AB'IS、DPPH自由基均具有較彊的清除能力及還原能力,其結果與濃度呈良好的量效關繫。其中乙痠乙酯層抗氧化能力最彊,在濃度為0.62mg/mL時,對ABTS自由基的最大清除率為91.57%,對DPPH·的最大清除率為94.87%,與同濃度VC的清除率接近,且其IC50分彆為0.066mg/mL、0.004mg/mL,測得乙痠乙酯層總酚含量最高,達10.45%。大葉蟹甲草具有較好的抗氧化能力,其中乙痠乙酯層抗氧化能力最顯著,與總酚含量有較大的相關性,同時該結果也客觀地反映瞭DPPH法、ABTS-+法及還原性法測定大葉蟹甲草抗氧化活性的準確性。
목적연구대협해갑초불동췌취부위적항양화활성。방법채용ABTS、DPPH자유기급환원성반응체계,이용분광광도법측정대협해갑초적총제액、을산을지층、정정순층화석유미층재불동농도하적항양화능력급기총분함량。결과대협해갑초적불동췌취부위대AB'IS、DPPH자유기균구유교강적청제능력급환원능력,기결과여농도정량호적량효관계。기중을산을지층항양화능력최강,재농도위0.62mg/mL시,대ABTS자유기적최대청제솔위91.57%,대DPPH·적최대청제솔위94.87%,여동농도VC적청제솔접근,차기IC50분별위0.066mg/mL、0.004mg/mL,측득을산을지층총분함량최고,체10.45%。대협해갑초구유교호적항양화능력,기중을산을지층항양화능력최현저,여총분함량유교대적상관성,동시해결과야객관지반영료DPPH법、ABTS-+법급환원성법측정대협해갑초항양화활성적준학성。
Object:study on the antioxidant activity from different extraction of cacalia firma kom.Methods: Using ABTS, DPPH radical and reducing reaction, determination the total extracts ,Ethyl acetate, butanol layer and layer of cacalia firma kom. in different concentrations of the antioxidant capacity and total phenolic content. Results: The results showed a good dose-concentration relationship.The acetidin fraction of caealia firma kom. Show the most potent antioxidant activities in each assay. When the concentration of 0.62mg/mL,showing 91.57% in the ABTS radical scavenging, 94.87% in the DPPH radical scavenging. With the same concentration of the radical scavenging close to the VC. And each IC50 are 0.066mg/mL,0.004mg/mL.Therefore, our study verified that the butanol fraction has strong antioxidant activities which are correlated with its high level of phenolics. The phenolics concent of the acetidin fraction is 2.9 (mg/20mg).Conclusions: The cacalia firma kom. has good antioxidant capacity. The aeetidin fraction antiorddant capacity significantly, And total phenolics content have a greater correlation. Meanwhile, the results also reflect the ABTS o + method is objective, DPPH method and reducing method for the determination of antioxidant activity of cacalia firma kom.