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A spectrophotometric assay for feruloyl esterases.

Analytical biochemistry (2002-10-17)
Vladimír Mastihuba, Lubomír Kremnický, Mária Mastihubová, J L Willett, Gregory L Côté
ABSTRACT

We have developed a spectrophotometric assay for the quantitative determination of feruloyl esterase activity based on release of 4-nitrophenol from a novel substrate, 4-nitrophenyl ferulate in an emulsion of Triton X-100 in aqueous buffer solution. The release of 4-nitrophenol was linear with reaction time at an early stage of the reaction with various esterase preparations. The method proposed here is accurate, rapid, and easy to perform.

MATERIALS
Product Number
Brand
Product Description

Sigma-Aldrich
4-Nitrophenyl dodecanoate, ≥98.0% (GC)