Production of Biosurfactants by Soil Fungi Isolated from the Amazon Forest

Figure 3

Stability of biosurfactants from Penicillium 8CC2 under different physical conditions: (a) after heating 100°C (60 min) and (b) with the addition of NaCl (30% w/v). The synthetic surfactant Tween 80 (1% w/v) was used as a control substance in these assays.

(a)

(b)