. 2020 Sep 29;9(10):1382. doi: 10.3390/foods9101382

Table 2.

Free amino acids composition expressed in mg/g of dry sample (ds) of Porphyra dioica (blades and conchocelis), Porphyra umbilicalis (blades and conchocelis), Gracilaria vermiculophylla, and Ulva rigida.

Amino Acids	Porphyra dioica		Porphyra umbilicalis		Gracilaria vermiculophylla (mg/g ds)	Ulva rigida (mg/g ds)
Amino Acids	Blades (mg/g ds)	Conchocelis (mg/g ds)	Blades (mg/g ds)	Conchocelis (mg/g ds)	Gracilaria vermiculophylla (mg/g ds)	Ulva rigida (mg/g ds)
Asp	2.23 ± 0.01 ^b	1.30 ± 0.01 ^c	3.53 ± 0.09 ^a	1.44 ± 0.09 ^c	0.53 ± 0.03 ^d	0.24 ± <0.01 ^e
Glu	3.67 ± 0.05 ^b	4.63 ± 0.03 ^a	3.15 ± 0.08 ^c	4.77 ± 0.15 ^a	1.14 ± 0.03 ^d	0.21 ± 0.01 ^e
Asn	0.55 ± 0.01 ^b	0.35 ± <0.01 ^d	0.44 ±0.01 ^c	0.32 ± 0.02 ^d	0.14 ± <0.01 ^e	1.45 ± 0.06 ^a
Gln	0.09 ± <0.01 ^d	0.33 ± <0.01 ^a	0.14 ± <0.01 ^b	0.13 ± 0.01 ^c	0.08 ± <0.01 ^e	0.08 ± <0.01 ^de
Ala	5.50 ± 0.06 ^a	5.37 ± 0.04 ^a	5.01 ± 0.08 ^b	3.70 ± 0.13 ^c	0.26 ± 0.01 ^d	0.19 ± 0.01 ^d
Arg	0.12 ± 0.01 ^c	0.70 ± 0.01 ^a	0.14 ± <0.01 ^c	0.29 ± 0.01 ^b	0.13 ± 0.02 ^c	0.08 ± <0.01 ^d
Gly	0.13 ± 0.01 ^d	0.37 ± <0.01 ^a	0.15 ± 0.01 ^cd	0.29 ± 0.05 ^b	0.10 ± 0.01 ^d	0.20 ± 0.01 ^c
Ser	0.26 ± <0.01 ^c	0.45 ± 0.01 ^b	0.29 ± <0.01 ^c	0.77 ± 0.03 ^a	0.19 ± 0.01 ^d	0.13 ± <0.01 ^e
Tyr	0.04 ± <0.01 ^c	0.18 ± <0.01 ^a	0.07 ± 0.01 ^b	0.05 ± <0.01 ^c	0.07 ± <0.01 ^b	0.07 ± <0.01 ^b
Pro	0.04 ± <0.01 ^de	0.14 ± 0.01 ^a	0.03 ± <0.01 ^e	0.12 ± 0.01 ^b	0.05 ± 0.01 ^d	0.07 ± <0.01 ^c
Hyp	0.01 ± <0.01 ^b	n.d.	0.01 ± <0.01 ^b	n.d.	0.01 ± <0.01 ^a	0.01 ± <0.01 ^a
Phe	0.05 ± <0.01 ^d	0.27 ± <0.01 ^a	0.08 ± <0.01 ^c	0.11 ± <0.01 ^b	0.05 ± <0.01 ^d	0.04 ± <0.01 ^d
His	0.18 ± 0.01 ^b	0.06 ± <0.01 ^c	0.02 ± <0.01 ^c	0.03 ± 0.01 ^c	0.20 ± 0.02 ^b	1.96 ± 0.09 ^a
Ile	0.07 ± <0.01 ^b	0.17 ± <0.01 ^a	0.07 ± <0.01 ^b	0.08 ± <0.01 ^b	0.05 ± <0.01 ^c	0.04 ± <0.01 ^c
Leu	0.07 ± <0.01 ^c	0.39 ± <0.01 ^a	0.07 ± <0.01 ^c	0.13 ± 0.01 ^b	0.04 ± <0.01 ^d	0.05 ± <0.01 ^d
Lys	0.11 ± <0.01 ^cd	0.37 ± 0.01 ^a	0.13 ± <0.01 ^c	0.25 ± 0.03 ^b	0.10 ± 0.01 ^cd	0.07 ± <0.01 ^d
Met	n.d.	0.16 ± <0.01	n.d.	n.d.	n.d.	n.d.
Thr	0.28 ± <0.01 ^d	0.46 ± 0.01 ^b	0.41 ± 0.01 ^c	0.53 ± 0.03 ^a	0.16 ± 0.01 ^e	n.d.
Trp	n.d.	0.09 ± <0.01	n.d.	n.d.	n.d.	n.d.
Val	0.16 ± 0.01 ^c	0.37 ± <0.01 ^a	0.14 ± <0.01 ^c	0.21 ± 0.01 ^b	0.08 ± 0.01 ^d	0.06 ± <0.01 ^e
∑FAA	13.57 ± 0.15 ^bc	16.17 ± 0.03 ^a	13.88 ± 0.28 ^b	13.20 ± 0.23 ^c	3.36 ± 0.11 ^e	4.95 ± 0.15 ^d

FAA: Free amino acids; ds: dry sample. Amino acids are presented by the 3-letter abbreviation code. In each row, different superscript letters represent significant differences between samples (p < 0.05) while the same superscript letters denote no significant differences (p > 0.05). n.d.: not detected.