Abstract: Using egg protein and the WHO/FAO reference model on essential amino acid(EAA),4 plant leaf proteins were evaluated for their nutritional values.With them,the leaf proteins in Vacinium bracteatum were compared by applying the fuzzy pattern recognition and ratio coefficient of amino acid(AA).The results showed that 71.82% of the total amino acids of V.bracteatum was in the leaves.And,EAA comprised 40.30% of the total AA in the leaves.The greatest limiting AA in the protein was lysine.The ratio coefficient of amino acid was 77.05.V.bracteatum was,therefore,considered a potential protein source with high nutritional value.

Key words: Vacinium bracteatum, protein, amino acid, nutritional evaluation