If there was a mix of the three proteins consisting of 47% cereal, 31% legume an
ID: 15345 • Letter: I
Question
If there was a mix of the three proteins consisting of 47% cereal, 31% legume and 22% nuts/seeds, what would be the individual amino acid score for the mixture and what are the first and second limiting amino acid when compared to the reference egg protein?
Amino Acid Cereal Legume Nuts/Seeds Egg Reference Protein
-----------------------g amino acid/100 g protein ---------------------
Histidine 1.8 3.0 2.7 2.6
Isoleucine 4.0 4.5 3.1 3.3
Leucine 8.6 7.9 7.3 5.2
Lysine 3.0 6.7 4.3 4.4
Methionine
plus cysteine 4.1 2.5 3.8 4.0
Phenylalanine
Plus tyrosine 8.3 8.5 8.8 5.8
Threonine 3.4 4.0 3.8 2.9
Tryptophan 1.4 1.2 1.0 1.2
Valine 4.2 3.6 5.6 4.1
Explanation / Answer
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