Abstract
The role of feruloyl esterases in plant wall development, in gut health, and in the breakdown of plant biomass for the production of bioactive phytochemicals and biofuel is covered in this review. These enzymes have potential roles in stomatal cell function and the phenolic substitutions and cross-linkages between plant cell wall components. As more plant genomes are sequenced, the role of ferulic acid and feruloyl esterases in planta may be better understood. In human and ruminal digestion, these enzymes are important to de-esterify dietary fibre, releasing hydroxycinnamates and derivatives which have been shown to have positive health effects, such as antioxidant, anti-inflammatory and anti-microbial activities. They are also involved in colonic fermentation where their extracellular and intracellular activities in the microbiota improve the breakdown of polysaccharides and increase microbial production of short chain fatty acids. Their specificity can also be employed to synthesize bioactive compounds for cosmetic and health applications. The enzymatic disassembly of cereal straws is greatly enhanced when feruloyl esterase activity is present, although the substrate specificity of the esterase appears to have some bearing on its optimal application. The involvement of feruloyl esterases in the improved enzymatic and microbial saccharification of cereal-derived material demonstrates a high importance for these enzymes in animal feed preparation and bioalcohol production.
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Abbreviations
- AnFaeA:
-
Type-A feruloyl esterase from Aspergillus niger
- AnFaeB:
-
Type-B feruloyl esterase from Aspergillus niger
- CA:
-
Caffeic acid
- ChlA:
-
Chlorogenic acid
- CLEA:
-
Cross-linked enzyme aggregate
- diFA:
-
Diferulic acid
- DPPH:
-
1,1-Diphenyl-2-picrylhydrazyl
- FA:
-
Ferulic acid
- FAE:
-
Feruloyl esterase
- GH10:
-
Glycoside hydrolase family 10
- GH11:
-
Glycoside hydrolase family 11
- HCA:
-
Hydroxycinnamic acids
- kDa:
-
One thousand Dalton units
- LDL:
-
Low-density lipoprotein
- MCA:
-
Methyl caffeate
- MFA:
-
Methyl ferulate
- MpCA:
-
Methyl p-coumarate
- MSA:
-
Methyl sinapate
- pCA:
-
p-Coumaric acid
- SA:
-
Sinapic acid
- StFaeC:
-
Type-C feruloyl esterase from Sporotrichum thermosporum
- TsFaeC:
-
Type-C feruloyl esterase from Talaromyces stipitatus
- WB:
-
Wheat bran
- WS:
-
Wheat straw
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The Biotechnology and Biological Sciences Research Council (BBSRC), UK, is kindly thanked for financial support.
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Faulds, C.B. What can feruloyl esterases do for us?. Phytochem Rev 9, 121–132 (2010). https://doi.org/10.1007/s11101-009-9156-2
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DOI: https://doi.org/10.1007/s11101-009-9156-2