Journal of Applied Phycology

, Volume 19, Issue 5, pp 393–399 | Cite as

Growth rate and carrageenan analyses in four strains of Kappaphycus alvarezii (Rhodophyta, Gigartinales) farmed in the subtropical waters of São Paulo State, Brazil

  • Leila HayashiEmail author
  • Edison José de Paula
  • Fungyi Chow
Original Research


Growth rate, semi-refined and refined carrageenan yields, 3,6-anhydrogalactose and sulphate contents, and gel strength were investigated in four strains of Kappaphycus alvarezii (brown, green and red tetrasporophytic strains, and one strain derived from tetraspores progeny, called G11) farmed in subtropical waters of São Paulo State, Brazil. All studied strains showed higher growth rates from February to May, decreasing from July to December. The G11 strain exhibited lower growth rates, but had semi-refined and refined carrageenan yields significantly higher than the others and similar to a commercial sample. A negative correlation between growth rate and semi-refined carrageenan yield was verified for all strains. The brown strain had the lowest content of 3,6-anhydrogalactose, while G11 and green strains showed higher values. No clear pattern of variation and no relationship were observed for sulphate and gel strength. However, all strains presented gel strength values near the one obtained from commercial sample. These results show that the carrageenan extracted from brown, green, red, and G11 strains of K. alvarezii cultured in subtropical waters of São Paulo State, Brazil with commercial potentials.

Key words

eucheumatoid species exotic species phycocolloids seaweed 



This study was supported by Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP) and Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq). We thank Ricardo Toledo Lima Pereira and all staff of Núcleo de Pesquisa do Litoral Norte for field assistance; Griffith do Brasil S/A Factory and Rosário Petti for technical help, and Eurico C. Oliveira and Jonathan Hagopian for critically reviewing the manuscript.


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Copyright information

© Springer Science+Business Media, Inc. 2007

Authors and Affiliations

  • Leila Hayashi
    • 1
    Email author
  • Edison José de Paula
    • 1
  • Fungyi Chow
    • 1
  1. 1.Departamento de Botânica, Instituto de BiociênciasUniversidade de São PauloSão PauloBrazil

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