Electrospun Membranes Based on Schizophyllan-PVOH and Hamamelis Virginiana Extract: Antimicrobial Activity Against Microorganisms of Medical Importance.

Electrospinning is a micrometric or nanometric scale fiber manufacturing technique with structural factors such as greater contact surface and pore size that allows the incorporation of biological agents in its structure, increasing their potential for medical applications. Due to the conditions required for the electrospinning process, such as high voltage, in the present work, the evaluation of the antimicrobial activity of schizophyllan-based membranes elaborated by electrospinning at 20 kV incorporated with Hamamelis virginiana was carried out against Staphylococcus aureus, Candida albicans and Pseudomonas aeruginosa. The schizophyllan production was 1.97 gL-1 from strain Schizophyllum commune ScIBL1. The conditions for the process were standardized for voltage, feed flow, and the distance from the injector to the collector. Membranes with smooth-edged fibers, diameter of 819 nm without the presence of beads were obtained. However, it was found that the membranes lost antimicrobial activity against all the microorganisms evaluated, whereas, bioassays showed that null toxicity was presented.