Table 5. Contents of essential amino acids in commercial and ancient traditional ‘Doenjang’

Samples	Commercial			Ancient traditional					F-value
	CCT1)	CDT	CKT	CSJ	NJ	CJ	NCJ	GCJ
Essential amino acids (mg/100 g)
Methionine+cysteine	59.95±1.712)e3)	73.10±0.73d	37.01±0.23f	141.27±1.04a	34.71±1.09g	115.03±0.52b	108.05±0.73c	109.77±1.72c	3,899.39***4)
Leucine	207.71±0.99a	187.56±0.90b	117.39±0.65d	163.11±0.93c	24.75±0.26f	61.10±0.89e	60.44±0.93e	61.43±0.42e	22,635.42***
Isoleucine	247.63±1.18b	244.32±1.16c	366.95±0.56a	235.68±0.74d	54.46±0.63h	85.22±0.59f	93.54±0.80e	69.64±0.54g	59,166.59***
Valine	136.56±0.70	230.08±1.09	170.94±0.83	304.48±0.92	ND5)	ND	ND	ND	NS6)
Lysine	161.91±0.80a	160.00±0.79b	141.60±0.72c	54.72±0.18d	15.84±0.30h	27.08±0.06f	30.02±0.26e	21.12±0.53g	46,130.04***
Histidine	95.59±0.60c	55.18±0.56f	72.05±0.57e	229.87±1.73a	17.69±0.54g	75.74±0.33d	70.86±0.49e	106.60±0.85b	17,479.07***
Phenylalanine+tyrosine	411.20±2.01a	303.17±1.45d	305.85±0.62c	329.26±0.36b	58.79±0.91h	121.23±0.92f	130.60±0.35e	107.12±0.78g	45,118.41***
Tryptophan	22.67±0.11e	19.35±0.09f	11.71±0.06g	21.91±0.05e	30.08±0.47d	67.73±0.56b	73.39±0.16a	44.10±1.57c	4,193.72***
Threonine	155.22±0.77b	182.78±0.88a	105.68±0.62c	100.36±0.28d	18.62±0.12h	54.77±0.45f	50.58±0.20g	59.16±0.29e	34,829.16***
TEAA7)	1,684.02±8.94b	1,664.10±8.83c	1,462.83±3.85d	1,777.79±3.48a	254.93±3.45h	607.91±2.21f	617.48±1.04e	578.93±1.73g	45,180.37***
Savory taste
Glutamic acid	2,157.86±30.96c	2,078.27±11.10d	2,423.41±12.99a	2,230.12±10.68b	301.80±1.00g	2,158.72±7.85c	1,525.89±10.72e	1,140.86±8.46f	7,743.03***

CCT, ‘C’ Co., Ltd.; CDT, ‘D’ Co., Ltd; CKT, ‘K’ Co., Ltd; CSJ, Chunsie; NJ, Nanjang; CJ, Chungjang; NCJ, Mixed NJ and CJ, Nan-chungjang (mixed ratio 1:1); GCJ, Gihwa-chungjang.
All values are mean±SD (n=3).
Means with different small letters in the same line differ significantly by Duncan’s multiple range test (p<0.05).
p<0.001.
ND, not detected.
NS, not significantly.
TEAA, total essential amino acids.