Table 3. The number of indicator bacteria in samples collected from harvest and packing environments of four button mushroom farms

Environmental swabs	Total aerobic bacteria				Total coliforms		E. coli
	A	B	C	D	A	C	C
Knife	6.36±0.15	1.50±0.4	5.46±0.53	2.80±1.21	ND2)	ND	ND
Basket	2.48±1.76	-1)	5.38±0.79	2.73±0.34	ND	ND	ND
Glove	5.99±0.35	3.04±0.06	8.05±0.42	4.26±0.68	2.09±1.49	4.15±0.74	0.98±1.39
Bench	5.22±0.20	1.79±0.39	2.83±0.39	2.03±0.85	ND	ND	ND
Scale	-	2.91±0.08	3.29±0.11	1.58±0.52	-	ND	ND
Packaged mushroom	5.03±0.26	3.64±0.36	4.28±0.79	3.69±0.22	ND	ND	ND

-, not contained step.
ND, not detected sample. The coliform and E. coli-negative farms are not shown in the table.