Table 2: Amino acid composition (mg/g protein) of Porphyra shown in comparison to soy meal and the amino acid requirement as stated by WHO/FAO/UNU [111].

Amino Acid

P. yezoensis

[112]

P. umbilicalis

[113]

P. acanthophora

[80]

Porphyra sp       [78]

Soy meal           [101]

Daily Amino Acid requirement of an Adult [111]

Histidine (His)

5.4

10.6

32

2.33

2.9

15

Isoleucine (Ile)

11.5

42.5

44

8.2

3.7

30

Leucine (Leu)

41.9

86

86

18.45

9.7

59

Lysine (Lys)

53.9

60

67

8.26

6.6

45

Methionine (Met)

8.3

11.5

12

2.05

0.6

16

Cystine

         

6

Methionine + Cystine

         

22

Phenylalanine + tyrosine (Phe) + (Tyr)

49.8

79.8

75

8

10.4

30

Threonine

           

Tryptophan

37.3

63.5

62

11.21

4.4

23

Valine

     

-

 

6