Table 2. The amino acid composition of eel extracts and hydrolysates

Amino acid	ME	ME-ALP	ME-PRH	ME-APH
Histidine	4.69	3.94	4.45	4.15
Arginine	4.41	5.01	4.98	5.24
Threonine	6.75	5.76	5.64	5.95
Methionine	1.88	4.28	3.73	4.05
Isoleucine1)	2.27	6.75	6.52	6.53
Leucine1)	4.79	11.02	11.02	10.68
Phenylalanine1)	1.26	4.98	5.21	4.92
Tryptophan1)	0.00	0.00	0.00	0.00
Lysine	6.21	8.92	10.22	8.52
Valine1)	2.75	7.73	7.37	7.67
Cysteine / cystine	0.00	0.00	0.00	0.00
Glutamine /glutamic acid	9.44	8.28	8.45	8.74
Aspartic acid /asparagine	6.08	3.12	3.10	3.03
Serine	2.93	3.28	3.03	3.40
Glycine	23.98	8.46	8.55	8.70
Alanine	12.83	8.56	7.93	8.19
Proline1)	8.81	6.52	6.60	6.75
Tyrosine1)	0.93	3.40	3.20	3.49
Total amino acid	100.00	100.00	100.00	100.00
Sum of hydrophobic amino acids	20.81	40.40	39.92	40.04

Hydrophobic amino acids.