Effects of Different Astaxanthin Sources on Fillet Coloration and Energy Deposition in Rainbow Trout (Oncorhynchus mykiss)

Table 4

Effect of astaxanthin from different sources on the fillet amino acid profile of rainbow trout O. mykiss (g/100 g).

	Control	WBHPA-25	WBHPA-50	WBHPA-75	WBHPA-100	WBHPA-125	WUHPA	CSA
Essential amino acid
Arginine	1.31 ± 0.02	1.23 ± 0.01	1.25 ± 0.01	1.25 ± 0.02	1.21 ± 0.04	1.22 ± 0.04	1.21 ± 0.01	1.21 ± 0.02
Threonine	1.04 ± 0.02^b	0.98 ± 0.02^ab	0.99 ± 0.01^ab	0.97 ± 0.02^ab	0.94 ± 0.03^a	0.93 ± 0.02^a	0.94 ± 0.02^a	0.94 ± 0.02^a
Valine	1.14 ± 0.01	1.09 ± 0.02	1.08 ± 0.03	1.13 ± 0.00	1.11 ± 0.04	1.11 ± 0.03	1.16 ± 0.02	1.17 ± 0.02
Methionine	0.69 ± 0.01	0.66 ± 0.01	0.67 ± 0.00	0.66 ± 0.01	0.64 ± 0.02	0.64 ± 0.02	0.64 ± 0.02	0.65 ± 0.01
Isoleucine	0.97 ± 0.01	0.92 ± 0.02	0.92 ± 0.02	0.97 ± 0.01	0.95 ± 0.03	0.96 ± 0.03	0.99 ± 0.02	1.01 ± 0.02
Leucine	1.74 ± 0.03	1.66 ± 0.03	1.68 ± 0.01	1.68 ± 0.02	1.63 ± 0.05	1.61 ± 0.04	1.64 ± 0.02	1.65 ± 0.03
Phenylalanine	1.01 ± 0.02	0.96 ± 0.02	0.96 ± 0.01	0.96 ± 0.01	0.93 ± 0.03	0.93 ± 0.03	0.94 ± 0.01	0.93 ± 0.02
Histidine	0.92 ± 0.03	0.87 ± 0.02	0.88 ± 0.01	0.87 ± 0.02	0.87 ± 0.03	0.83 ± 0.03	0.88 ± 0.01	0.86 ± 0.02
Lysine	2.11 ± 0.04	2.02 ± 0.03	2.02 ± 0.02	2.02 ± 0.03	1.97 ± 0.07	1.97 ± 0.05	1.98 ± 0.02	1.98 ± 0.03
Nonessential amino acid
Aspartic acid	2.26 ± 0.04	2.14 ± 0.04	2.17 ± 0.02	2.16 ± 0.02	2.09 ± 0.07	2.09 ± 0.05	2.13 ± 0.03	2.12 ± 0.04
Serine	0.87 ± 0.03^b	0.78 ± 0.01^ab	0.80 ± 0.01^ab	0.77 ± 0.04^ab	0.74 ± 0.03^a	0.73 ± 0.02^a	0.72 ± 0.01^a	0.74 ± 0.01^a
Glutamic acid	3.35 ± 0.04	3.17 ± 0.06	3.22 ± 0.03	3.19 ± 0.07	3.08 ± 0.09	3.12 ± 0.08	3.15 ± 0.04	3.16 ± 0.07
Glycine	1.00 ± 0.03^b	0.96 ± 0.02^ab	0.95 ± 0.01^ab	0.97 ± 0.01^ab	0.90 ± 0.02^a	0.98 ± 0.02^ab	0.93 ± 0.01^ab	0.95 ± 0.02^ab
Alanine	1.30 ± 0.01^b	1.23 ± 0.02^ab	1.23 ± 0.01^ab	1.23 ± 0.01^ab	1.18 ± 0.03^a	1.21 ± 0.03^ab	1.20 ± 0.02^ab	1.21 ± 0.02^ab
Tyrosine	0.79 ± 0.01	0.75 ± 0.02	0.77 ± 0.01	0.75 ± 0.01	0.74 ± 0.02	0.72 ± 0.02	0.74 ± 0.01	0.73 ± 0.01
Proline	0.89 ± 0.02	0.84 ± 0.02	0.88 ± 0.01	0.90 ± 0.02	0.85 ± 0.03	0.80 ± 0.02	0.81 ± 0.01	0.81 ± 0.03
∑Amino acids	21.36 ± 0.30	20.25 ± 0.32	20.44 ± 0.17	20.45 ± 0.21	19.82 ± 0.60	19.83 ± 0.50	20.05 ± 0.26	20.08 ± 0.36

Values are presented as means ± SE (n = 3). Means in the same row with different superscripts are significantly different ().