Sentence:  Aside from this , the average portion contains some protein , an appreciable amount of vitamins and C - about one-tenth of the minimum daily requirement , and about a third of the official <WSD>vitamin</WSD> E requirement . 
Meaning of the word marked with <WSD> tags:  a fat-soluble vitamin that is essential for normal reproduction; an important antioxidant that neutralizes free radicals in the body