A cinnamoyl esterase from Aspergillus niger can break plant cell wall cross-links without release of free diferulic acids.

Garcia-Conesa M. T., Kroon P. A., Ralph J., Mellon F., Colquhoun I., Saulnier L., Thibault J-F., Williamson G.. (1999)

European Journal of Biochemistry, 266, 644-652