While calculating cellulase or xylanase enzyme activity, is it preferable to use the extinction coefficient of glucose or to use the standard factor from the standard graph of glucose?
Glucose does specifically absorb in IR. The best is to establish the standard spectrum yourself. Just to give you an idea (expressed in transmittance) :
As Dominique said it specifically absorbs in IR.Here I am providing one of the reference, which may clarify your query partially and it has detailed outline for what you are looking for. Hope it will help.