Assertion: lignin | /r/CapableOf | attack by enzyme
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Source sentences:
text: Because lignin is physically and chemically resistant to attack by enzymes, irreversiblly absorbs cellulase (and other enzymes), and acts as a impenetrable barrier to cellulase, its presence limits xylan/cellulose accessibility (Kumar and Wyman, 2009a, 2009b; Lu et al., 2002).