Structural analysis of carrageenan from farmed varieties of Philippine seaweed

Jennifer T. Aguilan, J. E. Broom, J. A. Hemmingson, F. M. Dayrit, M. N E Montaño, M. C A Dancel, M. R. Niñonuevo, R. H. Furneaux

Research output: Contribution to journalArticle

35 Citations (Scopus)

Abstract

Kappaphycus alvarezii, Eucheuma denticulatum and, more recently, Kappaphycus sp. 'Sacol' variety, are the carrageenan-containing red seaweeds currently farmed in the Philippines. The Kappaphycus sp. 'Sacol' variety is of particular interest to the Philippine seaweed industry because of its improved resistance to 'ice-ice' disease and its fast growing characteristics. Here we report on the detailed chemical analysis of the carrageenan from this species. The native and alkali-modified carrageenans from Kappaphycus sp. 'Sacol' variety were characterized by FT-IR, 1H and 13C NMR spectroscopy, and constituent sugar and methylation analyses and were compared to those from K. alvarezii, K. cottonii and Eucheuma denticulatum. The three Kappaphycus species contained predominantly κ-carrageenan with low levels of ι-carrageenan, methylated carrageenan and μ-precursor residues, while Eucheuma denticulatum contained predominantly ι-carrageenan with significant amounts of ν-precursor residues. Taxonomic classification of Kappaphycus species based on morphology has proved to be difficult because of their known plasticity. Molecular analysis using the rbcL sequence revealed that the Kappaphycus sp. 'Sacol' variety is most likely a form of K. cottonii.

Original languageEnglish (US)
Pages (from-to)179-192
Number of pages14
JournalBotanica Marina
Volume46
Issue number2
DOIs
StatePublished - Mar 2003
Externally publishedYes

Fingerprint

Kappaphycus
carrageenan
structural analysis
seaweed
Philippines
macroalgae
Eucheuma
Kappaphycus alvarezii
ice
molecular analysis
methylation
alkalis
chemical analysis
plasticity
nuclear magnetic resonance
nuclear magnetic resonance spectroscopy
sugar
spectroscopy
industry
taxonomy

ASJC Scopus subject areas

  • Aquatic Science
  • Plant Science

Cite this

Aguilan, J. T., Broom, J. E., Hemmingson, J. A., Dayrit, F. M., Montaño, M. N. E., Dancel, M. C. A., ... Furneaux, R. H. (2003). Structural analysis of carrageenan from farmed varieties of Philippine seaweed. Botanica Marina, 46(2), 179-192. https://doi.org/10.1515/BOT.2003.018

Structural analysis of carrageenan from farmed varieties of Philippine seaweed. / Aguilan, Jennifer T.; Broom, J. E.; Hemmingson, J. A.; Dayrit, F. M.; Montaño, M. N E; Dancel, M. C A; Niñonuevo, M. R.; Furneaux, R. H.

In: Botanica Marina, Vol. 46, No. 2, 03.2003, p. 179-192.

Research output: Contribution to journalArticle

Aguilan, JT, Broom, JE, Hemmingson, JA, Dayrit, FM, Montaño, MNE, Dancel, MCA, Niñonuevo, MR & Furneaux, RH 2003, 'Structural analysis of carrageenan from farmed varieties of Philippine seaweed', Botanica Marina, vol. 46, no. 2, pp. 179-192. https://doi.org/10.1515/BOT.2003.018
Aguilan JT, Broom JE, Hemmingson JA, Dayrit FM, Montaño MNE, Dancel MCA et al. Structural analysis of carrageenan from farmed varieties of Philippine seaweed. Botanica Marina. 2003 Mar;46(2):179-192. https://doi.org/10.1515/BOT.2003.018
Aguilan, Jennifer T. ; Broom, J. E. ; Hemmingson, J. A. ; Dayrit, F. M. ; Montaño, M. N E ; Dancel, M. C A ; Niñonuevo, M. R. ; Furneaux, R. H. / Structural analysis of carrageenan from farmed varieties of Philippine seaweed. In: Botanica Marina. 2003 ; Vol. 46, No. 2. pp. 179-192.
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