Table 5. Amino acid composition of extracted oat groat proteins by enzymatic treatment

Amino acid (mg/g)	Enzymatic treatment¹⁾
Amino acid (mg/g)	Enzyme I	Enzyme II	Enzyme III
Tyrosine	1.51±0.00^2)b3)	1.16±0.09^c	1.62±0.00^a
Glycine	3.01±0.00^b	2.96±0.09^b	3.93±0.09^a
Serine	3.23±0.10^b	3.12±0.09^b	4.52±0.00^a
Alanine	2.29±0.10^b	2.33±0.18^b	3.34±0.19^a
Glutamic acid	7.41±0.26^b	7.57±0.24^b	14.81±0.34^a
Lysine	2.12±0.10^b	1.96±0.09^b	2.75±0.16^a
Leucine	2.90±0.10^b	2.86±0.16^b	4.52±0.00^a
Methionine	0.89±0.10^b	0.85±0.09^b	1.24±0.09^a
Valine	2.17±0.00^c	2.33±0.09^b	3.34±0.09^a
Arginine	1.84±0.17^b	1.64±0.18^b	3.02±0.25^a
Aspartic acid	3.96±0.19^b	3.49±0.16^c	5.39±0.09^a
Isoleucine	1.23±0.10^b	1.22±0.18^b	1.83±0.09^a
Threonine	1.90±0.10^b	2.01±0.09^b	2.80±0.09^a
Phenylalanine	4.40±0.19^b	4.44±0.27^b	5.28±0.25^a
Proline	0.78±0.63^a	0.62±0.97^a	2.37±1.57^a
Histidine	1.06±0.10^b	1.01±0.09^b	1.29±0.00^a
Cysteine	0.67±0.00^b	0.63±0.00^b	0.81±0.00^a
Tryptophan	0.00±0.00	0.00±0.00	0.00±0.00
Total essential amino acid	16.67±0.54^b	16.67±0.69^b	23.05±0.47^a
Sum of 18 amino acids	41.36±1.79^b	40.20±1.79^b	62.84±2.22^a

Enzyme I, α-amylase 0.1% + glucoamylase 0.1%; Enzyme II, Enzyme I + complex of cellualse 0.1%; Enzyme III, Enzyme II + protease 0.1%.
All values are mean±SD (n=3).
Different superscript letters (^a-c) in the same row indicate significant differences (p<0.05) by Duncan’s multiple range test.