Hydrothermal acid treatment for sugar extraction from Golenkinia sp.

Sun A. Choi, Won Il Choi, Jin Suk Lee, Seung Wook Kim, Gye An Lee, Jihyun Yun, Ji Yeon Park

Research output: Contribution to journalArticlepeer-review

22 Citations (Scopus)


In this study, hydrothermal acid treatment for efficient recovery of sugar from Golenkinia sp. was investigated. The initial glucose and XMG (xylose, mannose, and galactose) contents of a prepared Golenkinia sp. solution (40g/L) were 15.05 and 5.24g/L, respectively. The microalgal cell walls were hydrolyzed, for sugar recovery, by enzymatic saccharification and/or hydrothermal acid treatment. Among the various hydrothermal acid treatment conditions, the most optimal were the 2.0% H2SO4 concentration at 150°C for 15min, under which the glucose- and XMG-extraction yields were 71.7% and 64.9%, respectively. By pH 4.8, 50°C enzymatic hydrolysis after optimal hydrothermal acid treatment, the glucose- and XMG-extraction yields were additionally increased by 8.3% and 0.8%, respectively. After hydrothermal acid treatment, the combination with the enzymatic hydrolysis process improved the total sugar yield of Golenkinia sp. to 75.4%.

Original languageEnglish
Pages (from-to)408-411
Number of pages4
JournalBioresource technology
Publication statusPublished - 2015 Aug 1


  • Enzymatic hydrolysis
  • Glucose
  • Golenkinia sp.
  • Hydrothermal acid treatment
  • Sugar extraction

ASJC Scopus subject areas

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


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