Figure 1From: Real-time understanding of lignocellulosic bioethanol fermentation by Raman spectroscopyRaw spectra (inset) were pretreated with a polynomial fitting routine to reduce the elevated background and a cosmic ray removal algorithm to remove spurious peaks caused by the high energy particles from the sun. In the pretreated spectra, the ethanol peak can be easily seen at 883 cm-1.Back to article page