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Photosynthetic characteristics and growth of alginate-immobilized Scenedesmus obliquus Agrociencia
Ruiz-Marín,Alejandro; Mendoza-Espinosa,Leopoldo G.; Sánchez-Saavedra,M. del P..
The micfoalgae Scenedesmus obliquus was immobilized in Ca-alginate beads at two stocking cell densities (6.7 X10(5) and 1.5X 10(6) cell bead-1). The photosynthetic fate (P), the initial slope of the photosynthesis (α), and the threshold fot irradiance-saturated photosynthesis (Ek) were determined; later, the growth and protein content for S. obliquus immobilized in beads-alginate under two light intensities (135 and 200 μE m -2 s -1) was evaluated using stocking cell densities that had previously presented the largest photosynthetic rate. Results showed than photosynthetic rates (P) and α of cells immobilized in beads at low stocking density (0.14 μmol O2 h-1 10-6 cells and 0.00056) were greater than in beads with high stocking density (0.02 μmol O2 h-1...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Scenedesmus obliquus; Photosynthesis; Immobilized cells protein content.
Ano: 2011 URL: http://www.scielo.org.mx/scielo.php?script=sci_arttext&pid=S1405-31952011000300004
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Production of ethanol by Saccharomyces cerevisiae and Zymomonas mobilis Coimmobilized: proposal for the use of organic waste Agrociencia
Ruiz-Marín,Alejandro; Canedo-López,Yunuén; Narváez-García,Asteria; Robles-Heredia,J. Carlos.
Abstract: Fermentation technologies were developed to improve the production of ethanol and an alternative is the immobilization technology, which offers advantages in comparison with free cells culture, such as the possibility of efficiently incorporating symbiotic bacteria in the same matrix. The aim of this study was to evaluate, in equivalent medium, the use of mango (Mangifera indica) waste to produce ethanol. The study compared the production of ethanol by using Zymomonas mobilis and Saccharomyces cerevisiae in free cells culture, immobilized and coimmobilized in calcium alginate in a culture medium equivalent to mango juice. It also included an evaluation of the effect of glucose concentration on productivity in a coimmobilized system. The...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Mangifera indica; Immobilization; Coimmobilization; Ethanol; Zymomonas mobilis; Saccharomyces cerevisiae.
Ano: 2016 URL: http://www.scielo.org.mx/scielo.php?script=sci_arttext&pid=S1405-31952016000500551
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