PubMed ID
发表日期 2014年Sep月

原始出处 国际食品科学与营养杂志
International journal of food sciences and nutrition
作者 Ninfali  Paolino  Chiarabini  Andrea  Angelino  Donato 

文献标题 ORAC/kcal比值可确定果汁、花蜜和果汁饮料的营养和功能特性。
The ORAC/kcal ratio qualifies nutritional and functional properties of fruit juices, nectars, and fruit drinks.



Fruit beverages are source of antioxidants, but their sugar content plays an important role in the epidemic of obesity. In this study, we considered 32 fruit beverages consumed in Italy (13 fruit juices, 11 nectars, and 8 fruit drinks), which were analyzed for caloric intake, total phenols (TP), ascorbic acid, and antioxidant capacity (oxygen radical absorbance capacity (ORAC) method). Results showed that the caloric intake was almost completely provided by the sugar content, ranging from 5.5 to 19%. The ORAC/kcal ratio was taken as an indicator of the antioxidant performance of fruit beverages. Fruit juices containing berries, red orange, and goji showed the best performances, together with berries or pears nectars and fruit drinks made with rose hips or tea extracts. The 95% of antioxidant capacity was provided by TP, which showed a significant linear correlation with the net ORAC values. Overall, the results indicate that the ORAC/kcal ratio is a suitable parameter to rank the quality of fruit beverages.

获取全文 10.3109/09637486.2014.918591