Biomass and phycocyanin content of heterotrophic Galdieria sulphuraria 074G under maltodextrin and granular starches-feeding conditions

Delicia Yunita Rahman, Fean Davisunjaya Sarian*, Marc J. E. C. van der Maarel

*Corresponding author for this work

Research output: Contribution to journalArticleAcademicpeer-review

2 Citations (Scopus)
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Abstract

A major disadvantage of microalgal cultivation is limited biomass yields due to the autotrophic lifestyle of most microalgal species. Heterotrophic growth on a suitable carbon source and oxygen can overcome such limitations. The red microalga Galdieria sulphuraria strain 074G grows heterotrophically on glucose and a number of other carbon sources while constitutively producing photopigments, including the blue-colored phycocyanin, a natural food colorant. Galdieria sulphuraria strain 074G grew well on maltodextrins as well as on granular starch in combination with the enzyme cocktail Stargen002. The maltodextrin cultures produced 2 mg phycocyanin per gram substrate, being slightly more than on glucose. The phycocyanin extracted from maltodextrin-grown cultures was thermostable up to 55 °C. Maltodextrins can be a cheap alternative to glucose syrups for the production of phycocyanin as natural food colorant.

Original languageEnglish
Pages (from-to)51–57
Number of pages7
JournalJournal of Applied Phycology
Volume32
Issue number1
Early online date11-Nov-2019
DOIs
Publication statusPublished - 2020

Keywords

  • Galdieria sulphuraria
  • Heterotroph
  • Maltodextrin
  • Phycocyanin
  • Starch
  • DENSITY FED-BATCH
  • C-PHYCOCYANIN
  • MICROALGAL BIOMASS
  • PURIFICATION
  • CULTURES
  • GROWTH
  • PIGMENT
  • PRODUCTIVITIES
  • CULTIVATION
  • MARINE

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