The scientists brewed a broccoli extract and fed it to rats for a month in addition to regular rat chow.
他们把大鼠分成两组进行对比研究，一组在常规食物中添加了椰菜提取物，另一组只加些水。
The paper focus on the estimation of antiolding and antidiseases abilities of the extract of broccoli with the method DPPH.
利用DPPH法对西兰花提取物的抗衰老、抗疾病能力进行了测定。
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