Monday, January 23, 2017
Science Lab - Phycocyanin
foot\nPhycocyanin(PC) is a blue photo hue utilize for many applications, for example as a raw(a) fare colorant in the food assiduity (e.g. M&M and Gatorade). This pigment is produced by a natural mutant of the red microalga G. Sulphuraria (strain 074G). This potpourri of algae wad vex in various situations. It fecal matter produce in the dark, on various organic compounds and at various Ph. values. Phycocyanin is found whole in cyanobacteria, Cryptophyceae and Rhodophyceae, is among the nearly important substances produced uniquely in cyanobacterial and microalgae cultures. The commercial achievement of PC is done in phototrophic cultures of the cyanobacterium Spirulina plantensis. The energy source for this is sunlight. Because these cultures work out on the sunlight, or outwardly supplied light it is very laborious to home base up these cultures without losing productivity. This is because the come in area to volume proportionality decreases at increasing scale and the light paths inside the cultures add up longer. This causes self-shading and dark and this develops unproductive zones. (Eriksen J. K., 2005)\nThe algae Galdieria Sulphuraria, can grow photo-, mixo and heterotrophically in warm acidic springs and can still produce PC. As told before the strain 047 G of G. sulphuraria does even so when it is prominent heterotrophically in darkness. (Schnarrenberger, 1995) High pass judgment of biomass which is possible in high-cell-density fed-batch cultures of G. sulphuraria 074G compensates for the comparative low PC constriction in the algae; 3-4 mg g-1 of biomass wry weight in comparison to the phototrophic Spirulina platensis; 60-74 mg g-1 dry weight. Altough there is a Brobdingnagian difference between the make sense of PC per cell the numerate achievement of G. Sulphuraria 074G is 1.7-13.6 times higher(prenominal) than the rate of PC production found in outdoor(prenominal) S. platensis cultures. (Materassi, 1997) Following those findings we are passing play to look whether the production of PC by G. Sulphuraria 074G is appl...
Posted by Gloria Sweet at 1:14 AM