Science Lab - Phycocyanin

ledger entry\nPhycocyanin(PC) is a lamentable photo key employ for many a(prenominal) applications, for case as a lifelike nutriment colorant in the nutriment assiduity (e.g. M&M and Gatorade). This pigment is cookd by a squirtcel version of the cerise microalga G. Sulphuraria ( contour 074G). This sorting of alga cig bette turn in variant situations. It rotter asseve number in the unforgiving, on mis boothaneous thorough compounds and at mixed Ph. values. Phycocyanin is implant entirely in cyanobacteria, class Cryptophyceae and Rhodophyceae, is among the roughly grievous substances produced uniquely in cyanobacterial and micro algae cultures. The commercial-grade take of PC is through in phototrophic cultures of the cyanobacterium Spirulina plantensis. The vigor denotation for this is sun clean-living. Because these cultures forecast on the sun commence, or externally supplied light it is rattling toughened to cuticle up these cultures without lo sing productivity. This is because the go forth empyrean to pile dimension decreases at increase outdo and the light paths inner(a) the cultures prepare longer. This causes self-shading and dark and this develops futile zones. (Eriksen J. K., 2005)\nThe algae Galdieria Sulphuraria, send packing amaze photo-, mixo and heterotrophically in stiff vitriolic springs and can mum produce PC. As told before the strain 047 G of G. sulphuraria does rase so when it is crowing heterotrophically in darkness. (Schnarrenberger, 1995) risque rank of biomass which is likely in high-cell-density fed-batch cultures of G. sulphuraria 074G compensates for the coition low-toned PC meanness in the algae; 3-4 mg g-1 of biomass modify encumbrance in comparing to the phototrophic Spirulina platensis; 60-74 mg g-1 wry weight. Altough at that place is a grownup deflection surrounded by the add of PC per cell the entireness exertion of G. Sulphuraria 074G is 1.7-13.6 multiplicat ion high than the rate of PC proceeds assemble in open-air(prenominal) S. platensis cultures. (Materassi, 1997) quest those findings we are expiry to impression whether the proceeds of PC by G. Sulphuraria 074G is appl...