Reaction Engineering for Asymmetric R‐/S‐PAC Synthesis With Ephedrine or Pseudoephedrine Dehydrogenase in Pickering Emulsion
ABSTRACT The synthesis of enantiopure α‐hydroxy ketones, particularly R‐ and S‐phenylacetylcarbinol (PAC), represents an important process in the pharmaceutical industry, serving as a pivotal step in the production of drugs. Recently, two novel enzymes, ephedrine dehydrogenase (EDH) and pseudoephedr...
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Wiley-VCH
2025-02-01
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| Series: | Engineering in Life Sciences |
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| Online Access: | https://doi.org/10.1002/elsc.202400069 |
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| author | Reynaldo Jr. Carubio Bao‐Hsiang Wang Marion B. Ansorge‐Schumacher |
| author_facet | Reynaldo Jr. Carubio Bao‐Hsiang Wang Marion B. Ansorge‐Schumacher |
| author_sort | Reynaldo Jr. Carubio |
| collection | DOAJ |
| description | ABSTRACT The synthesis of enantiopure α‐hydroxy ketones, particularly R‐ and S‐phenylacetylcarbinol (PAC), represents an important process in the pharmaceutical industry, serving as a pivotal step in the production of drugs. Recently, two novel enzymes, ephedrine dehydrogenase (EDH) and pseudoephedrine dehydrogenase (PseDH), have been described. These enzymes enable the specific reduction of 1‐phenyl‐1,2‐propanedione (PPD) to R‐PAC and S‐PAC, respectively. In this study, we transferred these enzymes into Pickering emulsions, which is an attractive reaction set‐up for large‐scale synthesis. The bioactive w/o Pickering emulsion (bioactive Pickering emulsion [BioPE]), in which methyl tert‐butyl ether served as the continuous phase, was stabilized by silica nanoparticles. Formate dehydrogenase from Rhodococcus jostii was utilized for cofactor regeneration. Given the considerable complexity of the BioPE, this reaction system underwent a first‐time application of design of experiment (DOE) for systematic engineering. A definitive screening design was employed to identify significant factors affecting space‐time yield (STY) and conversion. Response surface methodology was used to optimize the conditions, resulting in the observation of a high STY of 4.2 g L⁻¹ h⁻¹ and a conversion of 83.2% for BioPE with EDH, and an STY of 4.4 g L⁻¹ h⁻¹ and a conversion of 64.5% for BioPE with PseDH. |
| format | Article |
| id | doaj-art-4b2fd3c49598441dad297c615ed9959e |
| institution | DOAJ |
| issn | 1618-0240 1618-2863 |
| language | English |
| publishDate | 2025-02-01 |
| publisher | Wiley-VCH |
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| series | Engineering in Life Sciences |
| spelling | doaj-art-4b2fd3c49598441dad297c615ed9959e2025-08-20T02:54:43ZengWiley-VCHEngineering in Life Sciences1618-02401618-28632025-02-01252n/an/a10.1002/elsc.202400069Reaction Engineering for Asymmetric R‐/S‐PAC Synthesis With Ephedrine or Pseudoephedrine Dehydrogenase in Pickering EmulsionReynaldo Jr. Carubio0Bao‐Hsiang Wang1Marion B. Ansorge‐Schumacher2Chair of Molecular Biotechnology Dresden University of Technology Dresden GermanyChair of Molecular Biotechnology Dresden University of Technology Dresden GermanyChair of Molecular Biotechnology Dresden University of Technology Dresden GermanyABSTRACT The synthesis of enantiopure α‐hydroxy ketones, particularly R‐ and S‐phenylacetylcarbinol (PAC), represents an important process in the pharmaceutical industry, serving as a pivotal step in the production of drugs. Recently, two novel enzymes, ephedrine dehydrogenase (EDH) and pseudoephedrine dehydrogenase (PseDH), have been described. These enzymes enable the specific reduction of 1‐phenyl‐1,2‐propanedione (PPD) to R‐PAC and S‐PAC, respectively. In this study, we transferred these enzymes into Pickering emulsions, which is an attractive reaction set‐up for large‐scale synthesis. The bioactive w/o Pickering emulsion (bioactive Pickering emulsion [BioPE]), in which methyl tert‐butyl ether served as the continuous phase, was stabilized by silica nanoparticles. Formate dehydrogenase from Rhodococcus jostii was utilized for cofactor regeneration. Given the considerable complexity of the BioPE, this reaction system underwent a first‐time application of design of experiment (DOE) for systematic engineering. A definitive screening design was employed to identify significant factors affecting space‐time yield (STY) and conversion. Response surface methodology was used to optimize the conditions, resulting in the observation of a high STY of 4.2 g L⁻¹ h⁻¹ and a conversion of 83.2% for BioPE with EDH, and an STY of 4.4 g L⁻¹ h⁻¹ and a conversion of 64.5% for BioPE with PseDH.https://doi.org/10.1002/elsc.202400069bioactive Pickering emulsionsdesign of experimentenzyme cascademicrobioreactorphenylacetylcarbinol |
| spellingShingle | Reynaldo Jr. Carubio Bao‐Hsiang Wang Marion B. Ansorge‐Schumacher Reaction Engineering for Asymmetric R‐/S‐PAC Synthesis With Ephedrine or Pseudoephedrine Dehydrogenase in Pickering Emulsion Engineering in Life Sciences bioactive Pickering emulsions design of experiment enzyme cascade microbioreactor phenylacetylcarbinol |
| title | Reaction Engineering for Asymmetric R‐/S‐PAC Synthesis With Ephedrine or Pseudoephedrine Dehydrogenase in Pickering Emulsion |
| title_full | Reaction Engineering for Asymmetric R‐/S‐PAC Synthesis With Ephedrine or Pseudoephedrine Dehydrogenase in Pickering Emulsion |
| title_fullStr | Reaction Engineering for Asymmetric R‐/S‐PAC Synthesis With Ephedrine or Pseudoephedrine Dehydrogenase in Pickering Emulsion |
| title_full_unstemmed | Reaction Engineering for Asymmetric R‐/S‐PAC Synthesis With Ephedrine or Pseudoephedrine Dehydrogenase in Pickering Emulsion |
| title_short | Reaction Engineering for Asymmetric R‐/S‐PAC Synthesis With Ephedrine or Pseudoephedrine Dehydrogenase in Pickering Emulsion |
| title_sort | reaction engineering for asymmetric r s pac synthesis with ephedrine or pseudoephedrine dehydrogenase in pickering emulsion |
| topic | bioactive Pickering emulsions design of experiment enzyme cascade microbioreactor phenylacetylcarbinol |
| url | https://doi.org/10.1002/elsc.202400069 |
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