Abstract
Plant secondary metabolites have attracted considerable attention due to the increasing demand for finite fossil resources and environmental concerns. However, the biosynthesis of aromatic aldehydes or alcohols from renewable resources remains challenging and costly. This study explores a novel approach performed by the aromatic catabolizing organism Rhizopus oryzae, which enables a ferulic acid-activated co-production of 4-vinyl guaiacol (4-VG) and fumaric acid. The strain produced 4.60 g/L 4-VG and 11.25 g/L fumaric acid from a mixed carbon source of glucose and xylose, suggesting that this new pathway allows the potential production of natural 4-VG from low-cost substrates. This green route, which utilizes Rhizopus oryzae's ability to efficiently convert various renewable resources into valuable chemicals, paves the way for improved catalytic efficiency in 4-VG production.
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