Table 4: Free amino acid and total amino acid composition of BCs and EHBCs (g/100 g) and the EAA score compared with the FAO/WHO reference protein.

Free amino acidTotal amino acid
Amino AcidsBCsEHBCsBCsEHBCs

Lysine
Methionine
Threonine
Arginine
Histidine
Isoleucine
Leucine
Phenylalanine
Valine
Tryptophan
Serine
Glutamic acid
Glycine
Proline
Cystine
Aspartic acid
Alanine
Tyrosine

Total

Amino acidEAA Score
Reference
protein 1a
Reference
protein 2b
RP1cRP2d
BCsEHBCsBCsEHBCs

Lysine5.805.25
Threonine3.403.90
Valine3.503.60
Isoleucine2.802.90
Leucine6.605.20
Phenylalanine and tyrosine6.304.85
Tryptophan1.100.95
Methionine and cystine2.503.00
Histidine1.901.65
Arginine2.10

aSuggested profile of essential amino acid requirements for adults (FAO/WHO, 1991) [27].
bEssential amino acid requirements of the common pig (3–10 kg) according to the NRC (1998) [28].
cChemical score calculated using the FAO/WHO reference protein as the base.
dChemical score calculated using the amino acid requirements as per the NRC (1998) [28].