A perspective on galactose-based fermentative hydrogen production from macroalgal biomass: Trends and opportunities

Sang Hyoun Kim, Ackmez Mudhoo, Arivalagan Pugazhendhi, Rijuta Ganesh Saratale, Dinesh Surroop, Pratima Jeetah, Jeong Hoon Park, Ganesh Dattatraya Saratale, Gopalakrishnan Kumar

Research output: Contribution to journalReview article

11 Citations (Scopus)


This review analyses the relevant studies which focused on hydrogen synthesis by dark fermentation of galactose from macroalgal biomass by discussing the inoculum-related pretreatments, batch fermentation and inhibition, continuous fermentation systems, bioreactor designs for continuous operation and ionic liquid-assisted catalysis. The potential for process development is also revisited and the challenges towards suppressing glucose dominance over a galactose-based hydrogen production system are presented. The key challenges in the pretreatment process aiming to achieve a maximum recovery of upgradable (fermentable) sugars from the hydrolysates and promoting the concomitant detoxification of the hydrolysates have also been highlighted. The research avenues for bioprocess intensification connected to enhance selective sugar recovery and effective detoxification constitute the critical steps to develop future red macroalgae-derived galactose-based robust biohydrogen production system.

Original languageEnglish
Pages (from-to)447-458
Number of pages12
JournalBioresource technology
Publication statusPublished - 2019 May


All Science Journal Classification (ASJC) codes

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

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