Chemical composition of protein concentrate prepared from Yellowfin tuna Thunnus albacares roe by cook-dried process

Table 3 Total amino acid composition (g/100 g protein, %) of yellowfin tuna roe (YTR) and roe protein concentrates (RPCs) prepared by cook-dried process

Amino acid	YTR	FDC	BDC	SDC	Egg white
Protein content (%)	82.4	81.6	82.6	83.6	83.9
Asp	9.1b	8.7c	9.0b	9.2b	11.8a
Thr ^∮	5.2a	5.0c	5.1b	5.2a	4.7d
Ser	4.9e	5.6b	5.3d	5.4c	5.7a
Glu	12.3e	13.1d	13.2b	13.2c	14.9a
Pro ^†	6.5a	6.1ab	5.8b	5.8b	3.7c
Gly ^†	5.6a	4.9b	5.1b	5.1b	4.0c
Ala ^†	5.6b	6.6a	6.4a	6.4a	6.6a
Cys	0.8a	0.7a	0.7b	0.8a	0.7a
Val ^∮†	5.9c	6.3b	6.5b	6.4b	8.2a
Met ^∮†	4.0a	2.9b	2.9c	2.8b	2.0c
Ile ^∮†	5.9b	5.4c	5.5c	5.4c	6.2a
Leu ^∮†	8.8b	8.6c	8.6c	8.5c	9.2a
Tyr	2.5c	3.4a	3.1b	3.0b	0.2d
Phe ^∮†	4.3e	4.4d	4.6b	4.6c	6.4a
His ^∮	3.4a	3.4a	3.2b	3.2b	2.7c
Lys ^∮	8.5a	8.5a	8.5a	8.5a	8.2b
Arg ^∮	6.6a	6.6a	6.6a	6.5a	4.8b
TAA	99.9	100.2	100.1	100.0	100.0
EAA	52.6	51.1	51.5	51.1	52.4
EAA/NEAA	1.11	1.04	1.06	1.00	1.10
Hydrophobic amino acid	46.6	45.2	45.4	45.0	46.3

Data are means ± standard deviation of duplicate determination
Values with different letters within the same row are significantly different at P < 0.05 by Duncan’s multiple range test
TAA total amino acid, EAA essential amino acids, NEAA non essential amino acids
^∮Essential amino acids for infant
^†Hydrophobic amino acids

ISSN: 2234-1757