| Registro completo |
| Provedor de dados: |
OMA
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| País: |
Belgium
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| Título: |
Effect of different light regimes on the docosahexaenoic acid (DHA) content of <i>Isochrysis</i> aff. <i>galbana</i> (clone T-ISO)
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| Autores: |
Tzovenis, I.
De Pauw, N.
Sorgeloos, P.
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| Data: |
1997
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| Ano: |
1997
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| Palavras-chave: |
Rhodomonas salina
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| Resumo: |
The culture of <i>Isochrysis</i> aff. <i>galbana</i> Green (T-ISO) in hatcheries is promoted for its high docosahexaenoic acid (DHA) content which favours the successful rearing of aquatic larvae. In this paper we identified the need for well-defined culture conditions of microalgae if sufficient DHA content is the final goal. Using photoperiods of 24:0h, 12:12h and 16:8h L/D combined with photon flux densities (PFD's) of 110, 220 and 460 µE m<sup>-2</sup> s<sup>-1</sup>, batch cultures of T-ISO were sampled for DHA content in the exponential as well as the post-exponential (light-limited) growth phase. The various light regimes resulted in differences of DHA content of T-ISO revealing influences and strong interactions among the three variables studied. For fast and economic production of T-ISO cells rich in DHA it is recommended to harvest batch cultures at the end of the exponential phase using high photon flux densities (PFD's) under 12:12 h L/D cycles. The same regime or lower PFD under 24:0 h L/D seem to be sufficient for a continuous culture optimization scheme. In any case a strict following of culture protocols is very important since there is evidence for coexistence of different clones within the parental cultures leading to different results depending on which one prevails.
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| Tipo: |
Info:eu-repo/semantics/article
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| Idioma: |
Inglês
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| Identificador: |
http://www.vliz.be/nl/open-marien-archief?module=ref&refid=2979
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| Fonte: |
%3Ci%3EAquacult.+Int.+5%3C%2Fi%3E%3A+489-507
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| Direitos: |
info:eu-repo/semantics/restrictedAccess
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