Free Radical-Scavenging Properties and Antioxidant Activity of Fractions from Cranberry Products  

作　　者：Stéphane Caillet Guillaume Lorenzo Jacinthe Coté Jean-Francois Sylvain Monique Lacroix 

机构地区：[1]Research Laboratories in Sciences Applied to Food,Nutraceutical and Functional Food Institute,INRS-Institut Armand-Frappier,Universitédu Québec,Laval,Canada [2]Atoka Cranberries Inc.,Manseau,Canada

出　　处：《Food and Nutrition Sciences》2012年第3期337-347,共11页食品与营养科学（英文）

基　　金：This research was supported by the Natural Sciences and Engineering Research Council of Canada(NSERC); by Atoka Cranberries Inc.(Manseau,QC,Canada).

摘　　要：Lipid peroxidation inhibition capacity and antiradical activity were evaluated in HPLC fractions of different polarity obtained from two cranberry juices and three extracts isolated from frozen cranberries and pomace containing antho-cyanins, water-soluble and apolar phenolic compounds, respectively. Compounds with close polarities were collected to obtain between three and four fractions from each juice or extract. The cranberry phenols are good free radi-cal-scavengers, but they were less efficient at inhibiting the lipid peroxidation. Of all the samples tested, the intermediate polarity fraction of extract rich in apolar phenolic compounds of fruit presented the highest antiradical activity while the most hydrophobic fractions of the anthocyanin-rich extract from fruit and pomace appeared to be the most efficient at inhibiting the lipid peroxidation. The antioxidant or pro-oxidant activity of fractions increased with the con-centration. The phenol polarity and the technological process to manufacture cranberry juice can influence the antioxidant and antiradical activities of fractions.Lipid peroxidation inhibition capacity and antiradical activity were evaluated in HPLC fractions of different polarity obtained from two cranberry juices and three extracts isolated from frozen cranberries and pomace containing antho-cyanins, water-soluble and apolar phenolic compounds, respectively. Compounds with close polarities were collected to obtain between three and four fractions from each juice or extract. The cranberry phenols are good free radi-cal-scavengers, but they were less efficient at inhibiting the lipid peroxidation. Of all the samples tested, the intermediate polarity fraction of extract rich in apolar phenolic compounds of fruit presented the highest antiradical activity while the most hydrophobic fractions of the anthocyanin-rich extract from fruit and pomace appeared to be the most efficient at inhibiting the lipid peroxidation. The antioxidant or pro-oxidant activity of fractions increased with the con-centration. The phenol polarity and the technological process to manufacture cranberry juice can influence the antioxidant and antiradical activities of fractions.

关 键 词：HPLC Fractions Cranberry Juices Phenolic Extracts Free Radical Scavenging Capacity Antioxidant Activity 

分 类 号：R28[医药卫生—中药学]