Bioprocess and Biosystems Engineering

, Volume 35, Issue 1–2, pp 123–128 | Cite as

Comparison of sulfuric and hydrochloric acids as catalysts in hydrolysis of Kappaphycus alvarezii (cottonii)

  • Maria Dyah Nur Meinita
  • Yong-Ki Hong
  • Gwi-Taek JeongEmail author
Original Paper


In this study, hydrolysis of marine algal biomass Kappaphhycus alvarezii using two different acid catalysts was examined with the goal of identifying optimal reaction conditions for the formation of sugars and by-products. K. alvarezii were hydrolyzed by autoclave using sulfuric acid or hydrochloric acid as catalyst with different acid concentrations (0.1–1.0 M), substrate concentrations (1.0–13.5%), hydrolysis time (10–90 min) and hydrolysis temperatures (100–130 °C). A difference in galactose, glucose, reducing sugar and total sugar content was observed under the different hydrolysis conditions. Different by-product compounds such as 5-hydroxymethylfurfural and levulinic acid were also observed under the different reaction conditions. The optimal conditions for hydrolysis were achieved at a sulfuric acid concentration, temperature and reaction time of 0.2 M, 130 °C and 15 min, respectively. These results may provide useful information for the development of more efficient systems for biofuel production from marine biomass.


Kappaphhycus alvarezii Acid hydrolysis Optimization Sugar By-product 



This work was supported by the Korea Research Foundation Grant funded by the Korean Government (KRF-2008-313-D00303). We thank the Brain Busan 21 program for graduate support (MDNM).


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Copyright information

© Springer-Verlag 2011

Authors and Affiliations

  • Maria Dyah Nur Meinita
    • 1
    • 2
  • Yong-Ki Hong
    • 2
  • Gwi-Taek Jeong
    • 2
    Email author
  1. 1.Department of Fisheries and Marine ScienceJenderal Soedirman UniversityPurwokertoIndonesia
  2. 2.Department of BiotechnologyPukyong National UniversityBusanSouth Korea

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