Sentence:  Aside from this , the average portion contains some <WSD>protein</WSD> , an appreciable amount of vitamins and C - about one-tenth of the minimum daily requirement , and about a third of the official vitamin E requirement . 
Meaning of the word marked with <WSD> tags:  any of a large group of nitrogenous organic compounds that are essential constituents of living cells; consist of polymers of amino acids; essential in the diet of animals for growth and for repair of tissues; can be obtained from meat and eggs and milk and legumes