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Biocatalytic Reduction of HMF to 2,5‐Bis(hydroxymethyl)furan by HMF‐Tolerant Whole Cells
Author(s) -
Li YanMei,
Zhang XueYing,
Li Ning,
Xu Pei,
Lou WenYong,
Zong MinHua
Publication year - 2017
Publication title -
chemsuschem
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.412
H-Index - 157
eISSN - 1864-564X
pISSN - 1864-5631
DOI - 10.1002/cssc.201601426
Subject(s) - furfural , hydroxymethyl , chemistry , furan , biocatalysis , selectivity , catalysis , yeast , yield (engineering) , furfuryl alcohol , organic chemistry , reaction mechanism , biochemistry , materials science , metallurgy
Catalytic upgrading of 5‐hydroxymethylfurfural (HMF), an important biobased platform chemical for high‐value products, is currently of great interest. In this work, a new highly HMFtolerant yeast strain— Meyerozyma guilliermondii SC1103 was isolated, and biocatalytic reduction of HMF to 2,5‐bis(hydroxymethyl)furan (BHMF) using its resting cells was reported. Cosubstrates exerted a significant effect on the catalytic activity and selectivity of microbial cells as well as their HMF‐tolerant levels whereas the nitrogen source and mineral salts had no effects. In addition, M. guilliermondii SC1103 cells exhibited good catalytic performances within the range of pH 4.0–10.0. The yeast was highly tolerant to both HMF (up to 110 m m ) and BHMF (up to 200 m m ). In addition, 100 m m HMF could be selectively reduced to BHMF within 12 h by its resting cells in the presence of 100 m m glucose (as cosubstrate), with a yield of 86 % and selectivity of >99 %. The production of 191 m m of BHMF was realized within 24.5 h by using a fed‐batch strategy, with a productivity of approximately 24 g L −1 per day. In addition, this new biocatalytic approach was applied for the reduction of furfural and 5‐methylfurfural, affording the corresponding furfuryl alcohols with yields of 83 and 89 %, respectively.