الخلاصة:
Spirulina platensis is a blue-green alga that contains about 70% of dry
weight of proteins, 15-25% of carbohydrates and 11% of lipids, as well as vitamins and trace elements
and especially phycobiliproteins which in this stuady we have focused on phycocyanin extraction.
Objectives: the objective of our study is to follow the evolution of spirulina cultivation and to
optimize the production of phycocyanine to take advantage of its miraculous benefits.
Methods: We first started with the culture of spirulina and then we made the extraction by water
of phycocyanin and the reading of absorbance was made by a spectrophotometer.
Results and discussion: The work carried out in the laboratory showed that for an algal growth
and development a quantity of spirulina is required at seeding in order to maximize the chances of
success of the cultures as well as a favorable environment; thus we found that the percentage of
phycocyanine varied by changing the environment conditions such as: PH, temperature, intensity and
light color.
Conclusion: Environmental stress and culture conditions influence phycocyanin production.
The ideal conditions where we obtained a high percentage of phycocyanin are a temperature of 30°, Ph
between 9-10 and white light
