. 2019 Jan 29;8(2):43. doi: 10.3390/foods8020043

Table 2.

Amino acids in peptides of different fractions from ultrafiltration.

Flavor	Amino Acids	U-I (mg/g)	U-II (mg/g)	U-N-III (mg/g)
Umami	Asp	6.00 ± 0.02 ^a	15.00 ± 0.22 ^b	7.90 ± 0.06 ^a
	Glu	25.18 ± 0.34 ^a	35.31 ± 0.07 ^b	26.96 ± 0.22 ^a
	Total	31.18 ± 0.03 ^a	50.31 ± 0.11 ^b	34.86 ± 0.13 ^a
Sweet	Ala	2.08 ± 0.08 ^a	3.58 ± 0.12 ^b	0.74 ± 0.33 ^c
	Gly	2.39 ± 0.07 ^a	9.21 ± 0.01 ^b	1.78 ± 0.12 ^c
	Thr	3.25 ± 0.29 ^a	8.66 ± 0.06 ^b	3.36 ± 0.27 ^a
	Ser	4.82 ± 0.01 ^a	3.14 ± 0.02 ^b	3.43 ± 0.09 ^b
	Total	12.57 ± 0.36 ^a	24.60 ± 0.04 ^b	9.31 ± 0.01 ^c
Bitter	Val	2.22 ± 0.11 ^a	5.28 ± 0.31 ^b	1.13 ± 0.07 ^c
	Ile	2.78 ± 0.06 ^a	3.56 ± 0.09 ^b	0.89 ± 0.16 ^c
	Leu	1.24 ± 0.15 ^a	3.23 ± 0.01 ^b	0.11 ± 0.04 ^c
	His	0.78 ± 0.00 ^a	1.62 ± 0.06 ^b	2.05 ± 0.03 ^b
	Phe	1.44 ± 0.04 ^a	2.23 ± 0.12 ^b	0.53 ± 0.20 ^b
	Arg	0.22 ± 0.17 ^a	2.16 ± 0.00 ^b	0.19 ± 0.01 ^a
	Met	0.03 ± 0.03 ^a	1.13 ± 0.07 ^b	0.29 ± 0.33 ^a
	Total	7.97 ± 0.18 ^a	19.21 ± 0.07 ^b	4.26 ± 0.17 ^c
Sweet and Bitter	Lys	1.08 ± 0.12 ^a	4.39 ± 0.05 ^b	0.85 ± 0.02 ^a
	Pro	0.02 ± 0.06 ^a	0.48 ± 0.13 ^b	0.63 ± 0.05 ^b
	Total	1.06 ± 0.02 ^a	4.78 ± 0.02 ^b	0.22 ± 0.01 ^c
Flavorless	Cys	0.18 ± 0.00 ^a	0.6 ± 0.04 ^b	0.16 ± 0.04 ^a
	Tyr	0.48 ± 0.04 ^a	1.1 ± 0.03 ^b	0.06 ± 0.44 ^c
	Total	0.66 ± 0.04 ^a	1.7 ± 0.15 ^b	0.02 ± 0.01 ^c
Total		53.57 ± 1.23 ^a	100.60 ± 0.02 ^b	48.67 ± 0.11 ^c

^{a, b, c} The different letters in the same line represent that there are significant differences at the level of p < 0.05, and the same letters represent no significant difference.