% IMPORTANT: The following is UTF-8 encoded. This means that in the presence
% of non-ASCII characters, it will not work with BibTeX 0.99 or older.
% Instead, you should use an up-to-date BibTeX implementation like “bibtex8” or
% “biber”.
@ARTICLE{Milke:875144,
author = {Milke, Lars and Mutz, Mario and Marienhagen, Jan},
title = {{S}ynthesis of the character impact compound raspberry
ketone and additional flavoring phenylbutanoids of
biotechnological interest with {C}orynebacterium glutamicum},
journal = {Microbial cell factories},
volume = {19},
number = {1},
issn = {1475-2859},
address = {London},
publisher = {Biomed Central},
reportid = {FZJ-2020-01836},
pages = {92},
year = {2020},
note = {Biotechnologie 1},
abstract = {The phenylbutanoid 4-(4-hydroxyphenyl)butan-2-one, commonly
known as raspberry ketone, is responsible for the typical
scent and flavor of ripe raspberries. Chemical production of
nature-identical raspberry ketone is well established as
this compound is frequently used to flavor food, beverages
and perfumes. However, high demand for natural raspberry
ketone, but low natural abundance in raspberries, render
raspberry ketone one of the most expensive natural flavoring
components.In this study, Corynebacterium glutamicum was
engineered for the microbial synthesis of the character
impact compound raspberry ketone from supplemented
p-coumaric acid. In this context, the NADPH-dependent
curcumin/dihydrocurcumin reductase CurA from Escherichia
coli was employed to catalyze the final step of raspberry
ketone synthesis as it provides a hitherto unknown
benzalacetone reductase activity. In combination with a
4-coumarate: CoA ligase from parsley (Petroselinum crispum)
and a monofunctional benzalacetone synthase from Chinese
rhubarb (Rheum palmatum), CurA constitutes the synthetic
pathway for raspberry ketone synthesis in C. glutamicum. The
resulting strain accumulated up to 99.8 mg/L (0.61 mM)
raspberry ketone. In addition, supplementation of other
phenylpropanoids allowed for the synthesis of two other
naturally-occurring and flavoring phenylbutanoids, zingerone
(70 mg/L, 0.36 mM) and benzylacetone (10.5 mg/L, 0.07 mM).
The aromatic product portfolio of C. glutamicum was extended
towards the synthesis of the flavoring phenylbutanoids
raspberry ketone, zingerone and benzylacetone. Key to
success was the identification of CurA from E. coli having a
benzalacetone reductase activity. We believe, that the
constructed C. glutamicum strain represents a versatile
platform for the production of natural flavoring
phenylbutanoids at larger scale.},
cin = {IBG-1},
ddc = {570},
cid = {I:(DE-Juel1)IBG-1-20101118},
pnm = {583 - Innovative Synergisms (POF3-583)},
pid = {G:(DE-HGF)POF3-583},
typ = {PUB:(DE-HGF)16},
pubmed = {pmid:32316987},
UT = {WOS:000529438100001},
doi = {10.1186/s12934-020-01351-y},
url = {https://juser.fz-juelich.de/record/875144},
}