Nutritional Composition, -Glucosidase Inhibitory and Antioxidant Activities of Ophiopogon japonicus Tubers

Table 3

Amino acid composition of O. japonicus tubers (mg/g DW).

Amino acid	Tubers
Isoleucine	1.05 ± 0.10
Threonine	0.66 ± 0.10
Valine	1.71 ± 0.22
Methionine	3.05 ± 0.13
Leucine	1.39 ± 0.20
Phenylalanine	0.73 ± 0.15
Lysine	0.81 ± 0.12
Aspartate	2.50 ± 0.11
Serine	1.79 ± 0.20
Glutamate	5.16 ± 0.21
Proline	2.09 ± 0.15
Glycine	0.75 ± 0.12
Alanine	1.37 ± 0.14
Tyrosine	0.45 ± 0.11
Histidine	0.47 ± 0.11
Arginine	3.91 ± 0.28
Essential amino acid content	9.40 ± 0.87
Nonessential amino acid content	18.49 ± 0.50
Total amino acid content	27.88 ± 0.80

Values are expressed as mean ± SD of three determinations.
Essential amino acid.