School of Food Engineering, University of Campinas-UNICAMP, 13083-862 Campinas, SP, Brazil.
J Agric Food Chem. 2011 Mar 23;59(6):2277-83. doi: 10.1021/jf103181x. Epub 2011 Feb 3.
The effect of the intake of freeze-dried jaboticaba peel powder on the antioxidant potential of rats' blood plasma was investigated in two experiments. In the first, 35 male rats, divided into 5 groups, received 7 mg of anthocyanins/100 g of body weight, by gavage. The blood was withdrawn 0, 30, 60, and 120 min after gavage. The antioxidant capacity was evaluated in plasma by ORAC and TEAC. There was no significant difference in the plasmatic antioxidant potential among the groups. In the second experiment, 40 male rats were divided into 4 groups that consumed, respectively, 0, 1, 2, and 4% of freeze-dried jaboticaba peel powder added to their diet. An increase in the plasmatic antioxidant potential was observed for groups that received 1 and 2% of jaboticaba peel powder (1.7 times by TEAC method and 1.3 times by ORAC); however, the group that received 4% of the powder did not show antioxidant effects according to the methods used.
本研究旨在探讨冻干树莓果皮粉摄入对大鼠血浆抗氧化潜力的影响，共进行了两项实验。在第一项实验中，将 35 只雄性大鼠分为 5 组，每组大鼠经灌胃给予 7mg/100g 体重的花青素。在灌胃后 0、30、60 和 120 分钟时采集血液，通过 ORAC 和 TEAC 方法评估血浆中的抗氧化能力。结果显示，各组大鼠的血浆抗氧化潜力无显著差异。在第二项实验中，将 40 只雄性大鼠分为 4 组，分别摄入 0、1、2 和 4%的冻干树莓果皮粉添加到饮食中。结果显示，摄入 1%和 2%树莓果皮粉的大鼠的血浆抗氧化潜力均有所增加（TEAC 法增加 1.7 倍，ORAC 法增加 1.3 倍）；然而，摄入 4%树莓果皮粉的大鼠并未显示出根据所用方法的抗氧化作用。
