Combined effect of inorganic salts with calcium peroxide pretreatment for kenaf core biomass and their utilization for 2,3-butanediol production

Rijuta Ganesh Saratale, Han Seung Shin, Gajanan S. Ghodake, Gopalakrishnan Kumar, Min-Kyu Oh, Ganesh Dattatraya Saratale

Research output: Contribution to journalArticle

12 Citations (Scopus)

Abstract

This study focuses on development of calcium peroxide (CaO2) pretreatment that removes major part of lignin but retaining most of sugar components of kenaf core powder (KCP) biomass. In chemical pretreatment, usually higher loss of biomass occurs which was less during this pretreatment strategy. Supplementation of inorganic salts; manganese sulfate (MnSO4) and cobalt chloride (COCl2) in CaO2 pretreatment resulted in maximum delignification of KCP relative to individual CaO2 pretreatment. Maximum glucose yield (98%) and hydrolysis yield (80.5%) was achieved after enzymatic hydrolysis (30 FPU/g of KCP) under optimized conditions. Analytical results proved effective lignin removal and significant destruction of KCP with this pretreatment strategy. Finally, utilization of KCP enzymatic hydrolysates by developed strain Klebsiella pneumoniae KMK05 resulted in maximum 2,3-butanediol (BDO) production (10.42 g/L) and BDO titer (0.385 g/g of sugar). BDO titer achieved with KCP derived sugars were found comparable with the mixture of standard sugars which is notable.

Original languageEnglish
Pages (from-to)26-32
Number of pages7
JournalBioresource Technology
Volume258
DOIs
Publication statusPublished - 2018 Jun 1

Keywords

  • 2,3-Butanediol production
  • Calcium peroxide pretreatment
  • Enzymatic hydrolysis
  • Kenaf core powder
  • Klebsiella pneumoniae KMK05

ASJC Scopus subject areas

  • Bioengineering
  • Environmental Engineering
  • Renewable Energy, Sustainability and the Environment
  • Waste Management and Disposal

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