Table 5 Comparison of amino acid compositions in cheonggukjang fermented with millimeter wave irradiation

Amino acid	Millimeter wave irradiation
	Control	60 GHz	70 GHz
	Aspartic acid	4,645.70±0.301)^a2)	4,314.97±58.44^b	4,653.93±61.21^a
Threonine	1,463.19±3.31^a	1,411.57±18.60^b	1,412.12±5.83^b
Serine	1,758.84±8.16^a	1,694.42±25.77^b	1,581.24±1.79^c
Glutamic	9,397.30±73.36^b	8,509.57±47.43^c	9,710.68±58.02^a
Proline	1,780.40±33.96^b	1,764.87±7.86^b	1,909.37±6.23^a
Glycine	1,596.85±5.44^a	1,499.10±24.87^b	1,597.71±15.05^a
Alanine	1,628.34±2.38^a	1,556.97±25.07^b	1,677.81±14.62^a
Valine	1,585.62±13.59^b	1,497.07±53.64^b	1,844.72±25.71^a
Methionine	474.66±26.04^b	342.01±18.82^c	574.93±34.70^a
Isoleucine	1,514.03±27.22^b	1,502.94±10.22^b	1,766.77±48.47^a
Leucine	3,042.17±1.48^b	2,899.01±41.98^c	3,223.79±33.06^a
Tyrosine	1,559.44±21.01^b	1,372.14±3.84^c	1,656.65±7.25^a
Phenylalanine	2,257.30±14.81^b	2,053.19±17.35^c	2,395.34±40.27^a
Lysine	2,491.63±8.56^b	2,236.87±33.74^c	2,624.44±12.33^a
Histidine	1,067.71±0.97^b	968.84±18.12^c	1,157.93±0.35^a
Arginine	2,260.15±9.05^a	2,209.48±13.34^b	2,213.92±21.33^ab
Total	38,523.28±182.66^b	35,832.99±392.42^c	40,001.31±243.22^a

Mean S.D.
^a-cMeans with different superscripts in each column indicate significant differences (p< 0.05).
Asp = aspartic acid, Thr = threonine, Ser = serine, Glu = glutamic acid, Pro = proline, Gly = glycine, Ala = alanine, Val = valine, Met = methionine, Ile = isoleucine, Leu = leucine, Tyr = tyrosine, Phe = phenylalanine, Lys = lysine, His = histidine, Arg = arginine.