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Self-sufficient biocatalytic cascade for the continuous synthesis of danshensu in flow.
Appl Microbiol Biotechnol
January 2025
Department of Chemistry, Biochemistry and Pharmaceutical Sciences, University of Bern, Freiestrasse 3, 3012, Bern, Switzerland.
A new strategy has been developed to successfully produce the active component danshensu ex vivo. For this purpose, phenylalanine dehydrogenase from Bacillus sphaericus was combined with the novel hydroxyphenylpyruvate reductase from Mentha x piperita, thereby providing an in situ cofactor regeneration throughout the conversion process. The purified enzymes were co-immobilized and subsequently employed in batch biotransformation, resulting in 60% conversion of 10 mM L-dopa within 24 h, with a catalytic amount of NAD as cofactor.
View Article and Find Full Text PDFState-of-the-art advances in homogeneous molecular catalysis for the Guerbet upgrading of bio-ethanol to fuel-grade bio-butanol.
Chem Commun (Camb)
January 2025
Department of Chemistry, Indian Institute of Technology Guwahati, Guwahati - 781039, Assam, India.
The upgrading of ethanol to -butanol marks a major breakthrough in the field of biofuel technology, offering the advantages of compatibility with existing infrastructure while simultaneously offering potential benefits in terms of transport efficiency and energy density. With its lower vapour pressure and reduced corrosiveness compared to ethanol, -butanol is easier not only to manage but also to transport, eliminating the need for costly infrastructure changes. This leads to improved fuel efficiency and reduced fuel consumption.
View Article and Find Full Text PDFOptimizing LiNO Conversion through a Defective Carbon Matrix as Catalytic Current Collectors for Highly Durable and Fast-Charging Li Metal Batteries.
Nano Lett
January 2025
Frontiers Science Center for Transformative Molecules, School of Chemistry and Chemical Engineering, Shanghai Jiao Tong University, Shanghai 200240, China.
Lithium nitrate (LiNO) stands as an effective electrolyte additive, mitigating the degradation of Li metal anodes by forming a LiN-rich solid electrolyte interphase (SEI). However, its conversion kinetics are impeded by energy-consuming eight-electron transfer reactions. Herein, an isoreticular metal-organic framework-8-derived carbon is incorporated into the carbon cloth (RMCC) as a catalytic current collector to regulate the LiNO conversion kinetics and boost LiN generation inside the SEI.
View Article and Find Full Text PDFSelective synthesis of triacylglycerols by the ADS-17-supported Candida antarctica lipase B through esterification of oleic acid and glycerol.
J Sci Food Agric
January 2025
School of Food Science, Guangdong Pharmaceutical University, Zhongshan, China.
Background: Immobilized enzyme possessing both high activity and good selectivity is important in practice. In this study, Candida antarctica lipase B (CALB) was immobilized onto the macroporous resin ADS-17 for triacylglycerol (TAG) synthesis through esterification of oleic acid and glycerol. The reaction conditions were optimized by single-factor study and orthogonal test, and the reusability of the immobilized CALB (CALB@ADS-17) was evaluated.
View Article and Find Full Text PDFgeneration and conversion of a half-zirconocene catalyst for the synthesis of -acylpyrazoles.
RSC Adv
January 2025
School of Chemistry and Chemical Engineering, Yan'an University Yan'an 716000 P.R. China
Pyrazoles are an important class of five-membered nitrogen heterocyclic compounds that have been widely used in agriculture and medicine. Exploring their synthesis methods under mild conditions has always been a hot research topic. Herein, a new strategy was developed to enhance the activity of a zirconium metal centre for the synthesis of -acylpyrazole derivatives using CpZrCl as a pre-catalyst.
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