Table 1.

Compositions of amino acid solution (g·L^-1)

Amino acids	Group A	Group B	Group C	Group D
Isoleucine	5.5	5.5	5.5	5.5
Leucine	7.5	7.5	7.5	7.5
Lysine	7.0	7.0	7.0	7.0
Methionine	6.0	—	6.0	—
Phenylalanine	4.0	4.0	4.0	4.0
Threonine	5.0	5.0	5.0	5.0
Tryptophan	1.5	1.5	1.5	1.5
Valine	6.0	6.0	—	—
Arginine	6.0	6.0	6.0	6.0
Histidine	3.0	3.0	3.0	3.0
Proline	4.0	4.0	4.0	4.0
Tyrosine	1.0	1.0	1.0	1.0
Alanine	20.0	20.0	20.0	20.0
Glycine	7.5	7.5	7.5	7.5
Aspartic acid	4.0	4.0	4.0	4.0
Total amino acid	88.0	82.0	82.0	76.0
Total nitrogen	14.1	13.1	13.1	12.2