FIG. 1.

Analysis of Lactobacillus biosurfactants with WCX-1 ProteinChip arrays. Aliquots (2 μl) of biosurfactants produced by Lactobacillus strains RC-14, Shirota, GR-1, and 36 were spotted onto the surfaces of weak cation-exchange (WCX-1) ProteinChip arrays for SELDI analysis by using the laser intensity (LI) settings indicated. Individual spectra show the relative peak intensities versus mass-to-charge ratios (M/z) of proteins for each biosurfactant. The short vertical lines indicate individual protein peaks.