. 2020 May 5;57(12):4414–4423. doi: 10.1007/s13197-020-04478-3

Table 3.

Contents of biogenic amines in tested natto samples

Strains	Inoculation method	Contents of biogenic amines (mg/kg)
Strains	Inoculation method	PU	CA	HI	TY	SPD	SPM	TBA
B9	–	4.39 ± 0.64^fgh	7.78 ± 0.52^a	ND	76.21 ± 3.45^a	84.14 ± 3.50^a	218.24 ± 9.76^a	390.76 ± 17.87
B9 + SQ4	CF-1	3.58 ± 0.69^gh	0.29 ± 0.26^c	ND	71.91 ± 4.34^ab	80.83 ± 1.19^b	208.5 ± 8.97^a	365.44 ± 15.45
B9 + BZ11		4.09 ± 0.55^gh	0.37 ± 0.23^c	ND	70.26 ± 3.59^abc	84.31 ± 2.40^a	215.54 ± 8.03^a	374.79 ± 14.80
B9 + BZ25		5.04 ± 0.77^fgh	0.54 ± 0.15^c	ND	70.77 ± 2.52^abc	77.40 ± 1.72^c	206.09 ± 5.05^a	359.84 ± 10.21
B9 + M1	SF-1	4.33 ± 0.48^fgh	ND	ND	64.03 ± 0.60^bcd	28.84 ± 0.56^gh	179.60 ± 1.44^bc	276.80 ± 3.08
	SF-2	ND	ND	1.94 ± 0.18^bc	53.24 ± 1.02^dfe	27.65 ± 0.42^gh	153.02 ± 1.69^efg	235.86 ± 3.31
	CF-1	1.40 ± 0.51^h	ND	1.82 ± 0.48^bc	54.04 ± 0.87^def	71.56 ± 0.81^d	166.46 ± 0.05^cde	295.28 ± 2.72
	CF-2	1.74 ± 0.14^h	0.35 ± 0.07^c	1.89 ± 0.75^bc	39.63 ± 1.85^hij	72.14 ± 1.07^d	154.04 ± 2.15^defg	268.15 ± 6.03
B9 + M4	SF-1	3.89 ± 0.38^gh	0.31 ± 0.04c	ND	70.12 ± 0.73^abc	29.423 ± 1.6^2g	187.67 ± 0.85^b	291.41 ± 3.62
	SF-2	ND	ND	2.12 ± 0.42^bc	52.10 ± 2.70^defg	26.72 ± 1.53^h	156.45 ± 1.28^def	237.39 ± 5.93
	CF-1	1.75 ± 0.29^h	ND	1.81 ± 0.59^bc	51.53 ± 2.13^defg	68.33 ± 0.84^e	140.86 ± 1.81^fg	264.28 ± 5.66
	CF-2	4.73 ± 0.58^fgh	ND	2.04 ± 0.47^bc	45.82 ± 1.10^fghi	80.38 ± 1.28^b	166.45 ± 1.20^cde	299.41 ± 4.63
B9 + A8	SF-1	17.55 ± 2.85^c	ND	ND	41.03 ± 0.62^ghi	0.28 ± 0.01ⁿ	116.32 ± 0.96^h	175.18 ± 4.44
	SF-2	31.19 ± 0.66^b	ND	1.89 ± 0.36^bc	60.64 ± 1.82^bcde	12.19 ± 1.28^k	171.66 ± 1.01^bcd	277.58 ± 5.13
	CF-1	41.57 ± 1.23^a	ND	2.39 ± 0.58^ab	57.55 ± 1.96^cdef	28.94 ± 0.99^gh	171.54 ± 1.62^bcd	301.41 ± 6.38
	CF-2	30.68 ± 1.45^b	ND	2.48 ± 0.29^ab	53.53 ± 0.60^def	38.95 ± 1.32^f	182.78 ± 4.67^bc	308.95 ± 8.33
B9 + M1 + SQ4	CF-1	7.87 ± 0.95^efg	ND	2.63 ± 0.12^ab	51.25 ± 2.89^defg	15.69 ± 0.38^j	137.47 ± 5.97^g	214.90 ± 10.31
B9 + M1 + BZ11		13.63 ± 1.83^d	0.35 ± 0.08^c	ND	51.08 ± 0.57^defg	13.93 ± 0.18^jk	140.72 ± 1.04^fg	219.70 ± 3.71
B9 + M1 + BZ25		19.25 ± 2.73^c	1.64 ± 0.84^b	3.11 ± 0.83^ab	46.70 ± 2.23^efgh	20.49 ± 0.53ⁱ	140.57 ± 9.59^fg	231.77 ± 16.75
B9 + M4 + SQ4		13.19 ± 0.65^d	ND	3.97 ± 0.90^a	39.90 ± 1.88^ghi	9.22 ± 1.03^l	118.81 ± 8.83^h	185.10 ± 13.27
B9 + M4 + BZ11		8.50 ± 1.32^ef	ND	3.54 ± 1.44^ab	26.59 ± 1.21^j	4.45 ± 0.22^m	81.18 ± 5.98ⁱ	124.26 ± 10.17
B9 + M4 + BZ25		5.70 ± 0.63^fgh	ND	3.17 ± 0.04^ab	34.91 ± 0.58^ij	3.37 ± 0.07^m	86.49 ± 1.07ⁱ	133.65 ± 2.39
B9 + A8 + SQ4		7.12 ± 0.51^efg	ND	2.37 ± 0.57^ab	5.23 ± 1.17^k	ND	30.91 ± 1.66^j	46.33 ± 3.91
B9 + A8 + BZ11		10.83 ± 1.65^de	ND	0.55 ± 0.03^c	ND	ND	5.99 ± 1.12^k	17.37 ± 2.80
B9 + A8 + BZ25		5.24 ± 0.46^fgh	ND	2.76 ± 0.66^ab	ND	ND	8.15 ± 1.84^k	16.16 ± 2.96

PU putrescine, CA cadaverine, HI histamine, TY tyramine, SPD spermidine, SPM spermine, TBA Total biogenic amines, ND Not detected (amine level less than 0.1 mg/kg). Tryptamine and 2-phenylethylamine were not detected in all samples, so they were not listed in the table