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Journal of Applied Phycology

, Volume 6, Issue 1, pp 61–65 | Cite as

Riboflavin content of six species of microalgae used in mariculture

  • Malcolm R. Brown
  • Christine L. Farmer
Article

Abstract

Concentrations of riboflavin — a vitamin essential for maricultured animals—were measured in six species of microalgae commonly used in mariculture. These were two diatoms (Chaetoceros gracilis, Thalassiosira pseudonana); two prymnesiophytes (Isochrysis sp. (clone T.ISO),Pavlova lutheri); one chlorophyte (Nannochloris atomus) and one eustigmatophyte (Nannochloropsis oculata). Cultures were analysed during both logarithmic and stationary growth phase.

The proportions of riboflavin (µg g-1 dry weight) during logarithmic growth-phase ranged from 20 (T. pseudonana) to 40 µg g-1 (Isochrysis sp. T.ISO). With the onset of stationary phase, the proportion of riboflavin increased in all species; the increase was most dramatic in cultures ofC. gracilis, T. pseudonana andN. atomus (2- to 3-fold).Chaetoceros gracilis contained more riboflavin (106 µg g-1) than all other species (48 to 61 µ g-1).

Despite the differences in the composition of the different microalgae, across both logarithmic and stationary growth-phases, all species should provide a rich source of riboflavin for maricultured animals.

Key words

mariculture microalgae nutrition riboflavin vitamin 

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Copyright information

© Kluwer Academic Publishers 1994

Authors and Affiliations

  • Malcolm R. Brown
    • 1
  • Christine L. Farmer
    • 1
  1. 1.CSIRO Division of FisheriesHobartAustralia

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