Journal of Applied Phycology

, Volume 24, Issue 4, pp 857–862 | Cite as

Bioethanol production from the acid hydrolysate of the carrageenophyte Kappaphycus alvarezii (cottonii)

  • Maria Dyah Nur Meinita
  • Ji-Young Kang
  • Gwi-Taek Jeong
  • Hyun Min Koo
  • Sung Min Park
  • Yong-Ki HongEmail author


Seaweed resources can be used as raw materials to produce bioethanol, a renewable biofuel, to overcome fossil fuel depletion and environmental problems. Red seaweeds possess high amount of bioethanol-producible carbohydrates. Among 55 species tested, the carrageenophyte Kappaphycus alvarezii (also known as cottonii) was selected as the best resource for bioethanol production. This species is one of the most abundant and easily cultured red seaweeds. The main components of carrageenan are d-galactose-4-sulfate and 3,6-anhydro-d-galactose-2-sulfate, which are potentially fermentable d-typed carbohydrates. The seaweed powder was hydrolyzed with 0.2 M sulfuric acid and fermented with brewer’s yeast. The ethanol yield from the K. alvarezii hydrolysate was 0.21 g g−1-galactose, which corresponded to a 41% theoretical yield. It revealed a relative ethanol production of 66% comparing to that of pure galactose.


Acid hydrolysis Bioethanol Carrageenophyte Cottonii Kappaphycus alvarezii 



This research was supported by a grant from the Samsung Advanced Institute of Technology, Korea. We thank the Brain Busan 21 program for graduate support (MDNM, JYK).


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Copyright information

© Springer Science+Business Media B.V. 2011

Authors and Affiliations

  • Maria Dyah Nur Meinita
    • 1
    • 3
  • Ji-Young Kang
    • 1
  • Gwi-Taek Jeong
    • 1
  • Hyun Min Koo
    • 2
  • Sung Min Park
    • 2
  • Yong-Ki Hong
    • 1
    Email author
  1. 1.Department of BiotechnologyPukyong National UniversityBusanSouth Korea
  2. 2.Bio and Health LaboratorySamsung Advanced Institute of TechnologyYonginSouth Korea
  3. 3.Department of Fisheries and Marine ScienceJenderal Soedirman UniversityPurwokertoIndonesia

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