Table 3. Effect of filter pore sizes on aflatoxin inhibition.

Treatment	Pore Size	Membrane Material	Mean Amount of B1 (ppb)
Check (53/0.01% TX)	0.4 µm	Hydrophilic PTFE	605.93±45.78 a *
	0.4 µm	Polycarbonate	425.22±82.60 bc
	200 µm	Polyester Mesh	528.02±80.38 ab
Separated (53/51)	0.4 µm	Hydrophilic PTFE	507.54±87.49 ab
	0.4 µm	Polycarbonate	586.10±44.52 ab
	3 µm	Polycarbonate	511.34±115.68 ab
	12 µm	Polycarbonate	317.59±102.09 c
	74 µm	Polyester Mesh	1.82±1.65 d
	200 µm	Polyester Mesh	0.02±0.02 d
Together (53+51/53+51)	0.4 µm	Hydrophilic PTFE	10.65±2.18 d
	0.4 µm	Polycarbonate	0.21±0.14 d
	200 µm	Polyester Mesh	0.01±0.01 d

Aflatoxin B₁ production by toxigenic isolate 53 in the filter insert-plate well system when grown together or separated from the atoxigenic isolate 51 by a range of filter insert membrane pore sizes.

*Means followed by the same letter are not significantly different at the α = 0.05 level.