Table 5
Compar ison of free amino acid content of commercial Cheonggukjang and manufactured Cheonggukjang with SRCM 100730

Free amino acid content (mg/L)	Sample
	Manufactured Chunggukjang with SRCM 100730	Commercial Chunggukjang
	Phosphoserine	128.44±1.241)	138.99±2.12
Urea	232.94±1.00	151.59±1.51
Aspartic acid	6.02±0.02	13.72±0.15
Threonine	7.75±0.04	10.95±0.11
Glutamic acid	ND2)	88.75±0.84
α-Aminoadipic acid	78.83±0.41	22.29±0.02
Glycine	20.22±0.28	29.67±0.34
Alanine	29.75±0.22	30.16±0.15
Citrulline	20.18±0.22	1.06±0.07
α-Aminobutyric acid	6.97±0.28	ND
Valine	24.38±0.16	25.90±0.15
Cysteine	53.29±0.68	49.10±0.36
Methionine	28.27±0.28	26.51±0.99
Cystathionine	ND	20.03±0.21
Isoleucine	15.09±0.07	18.80±0.05
Leucine	42.01±0.01	68.36±0.04
Tyrosine	58.08±0.09	73.13±0.06
Phenylalanine	ND	ND
β-Alanine	47.62±0.35	45.16±0.12
β-Aminoisobutyric acid	36.28±0.41	83.32±0.35
γ-Aminobutyric acid	28.72±0.48	10.33±0.18
Ethanolamine	11.75±0.57	1.71±0.08
Ammonia	20.33±0.12	17.07±0.01
Ornithine	1.51±0.07	15.07±0.08
Lysine	0.99±0.12	9.25±0.12
1-Methylhistidine	14.62±0.44	97.78±0.55
Histidine	9.01±0.08	27.67±0.67
Anserine	22.84±0.04	41.91±0.12
Arginine	23.21±0.92	44.17±0.18

All the data were expressed as mean±SD (n=3).
ND, no detection.