Table 3: Amino acid composition of three major Thais sp.

Amino acids Thais bufo Thais hippocastanum
(mg/g)
Thais rudolphi
Non-essential amino acids
Aspartic acid 88.4 22.6 22.9
Serine In trace 3.8 4.5
Glutamic acid 144.2 228 230.4
Glycine 65.3 74.6 73.7
Alanine 75.8 83.2 81.3
Cysteine 7.1 9 5.1
Tyrosine 7.6 16.6 28.5
Proline 29.3 27.8 26.2
Arginine In trace In trace In trace
Essential amino acids
Threonine 3 0.9 1.3
Valine 19.4 20 14.2
Methionine 6.3 14.9 5.4
Isoleucine In trace 6.1 In trace
Leucine 30.3 40.3 31.7
Phenylalanine 8.6 15.3 13.4
Histidine 3.8 4.4 2.6
Tryptophan 130.1 110.2 123.2
Lysine 34 31.5 29.4
Total 653.2 709.2 693.8

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