Science Lab - Phycocyanin

Introduction\nPhycocyanin(PC) is a blueing photopigment used for many applications, for ideal as a rude(a) food colorant in the food industry (e.g. M&M and Gatorade). This pigment is taked by a natural mutant of the scarlet micro algae G. Sulphuraria ( give 074G). This kind of algae posterior upraise in discordant situations. It can produce in the dark, on various complete compounds and at various Ph. values. Phycocyanin is effect only in cyanobacteria, class Cryptophyceae and Rhodophyceae, is among the most important substances produced unambiguously in cyanobacterial and microalgae cultures. The technical mathematical product of PC is through in phototrophic cultures of the cyanobacterium Spirulina plantensis. The energy witnesser for this is sunlight. Because these cultures depend on the sunlight, or externally supplied light it is really hard to scale up these cultures without losing productivity. This is because the surface bea to quite a little ratio decreases at change magnitude scale and the light paths inside the cultures get longer. This causes self-shading and dark and this develops bootless zones. (Eriksen J. K., 2005)\nThe algae Galdieria Sulphuraria, can grow photo-, mixo and heterotrophically in warm blistering springs and can still produce PC. As told before the strain 047 G of G. sulphuraria does even so when it is grown heterotrophically in darkness. (Schnarrenberger, 1995) mellowed rates of biomass which is possible in high- cellphone-density fed-batch cultures of G. sulphuraria 074G compensates for the relative low PC concentration in the algae; 3-4 mg g-1 of biomass dry incubus in comparison to the phototrophic Spirulina platensis; 60-74 mg g-1 dry weight. Altough there is a big difference mingled with the amount of PC per cell the total production of G. Sulphuraria 074G is 1.7-13.6 times higher than the rate of PC production found in outdoor S. platensis cultures. (Materassi, 1997) Following those findings we are g oing to look whether the production of PC by G. Sulphuraria 074G is appl...