Production of 5-aminovaleric acid in recombinant Corynebacterium glutamicum strains from a Miscanthus hydrolysate solution prepared by a newly developed Miscanthus hydrolysis process

Jeong Chan Joo, Young Hoon Oh, Ju Hyun Yu, Sung Min Hyun, Tae Uk Khang, Kyoung Hee Kang, Bong Keun Song, Kyungmoon Park, Min Kyu Oh, Sang Yup Lee, Si Jae Park

Research output: Contribution to journalArticlepeer-review

41 Scopus citations

Abstract

This study examined nine expired industrial Corynebacterium glutamicum strains with high lysine producing capability for enhanced production of 5-AVA. C. glutamicum KCTC 1857 exhibiting the highest lysine production was transformed with either original Pseudomonas putida davBA genes, encoding the 5-AVA biosynthesis pathway, or C. glutamicum codon-optimized davBA genes. C. glutamicum KCTC 1857 expressing the original genes had superior cell viability and 5-AVA production capability compared to the other strain. This strain produced 39.93 g/L of 5-AVA, which is the highest titer reported to date in fed-batch fermentation from glucose. Indeed, Miscanthus hydrolysate solution prepared from a novel process, comprising pretreatment, hydrolysis, purification, and concentration, was used as feedstock for 5-AVA production. A total of 12.51 g/L 5-AVA was produced from the Miscanthus hydrolysate; this value is 34.7% higher than that obtained from glucose in batch fermentation.

Original languageEnglish
Pages (from-to)1692-1700
Number of pages9
JournalBioresource Technology
Volume245
DOIs
StatePublished - Dec 2017

Keywords

  • 5-Aminovaleric acid
  • Corynebacterium glutamicum
  • Metabolic engineering
  • Miscanthus
  • Pretreatment

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