Advances in 2-phenylethanol production from engineered microorganisms

作者:Wang, Yuqin; Zhang, Hao; Lu, Xinyao; Hong Zong; Bin Zhuge*
来源:Biotechnology Advances, 2019, 37(3): 403-409.
DOI:10.1016/j.biotechadv.2019.02.005

摘要

2-Phenylethanol (2-PE) is an important flavor ingredient with a rose-like odor. Due to concerns about the toxic byproducts potentially found in 2-PE from chemical synthesis, consumers prefer the natural aroma compound, promoting the biosynthesis of 2-PE. Various microorganisms produce 2-PE naturally with low yield. Recent metabolic engineering strategies in yeasts and Escherichia colt have achieved great success in improving 2-PE bioproduction, including the alleviation of feed-back inhibition, improvement of precursor transport, enhancing activities of crucial enzymes, and reduction of by-products. Here, we review the metabolic engineering strategies applied to microorganisms for increasing bioproduction of 2-PE, address current problems, and propose further improvements.