title: Response surface methodology for the evaluation of glucose-6-phosphate dehydrogenase enrichment process by soybean lecithin reversed micelles.
abstract: Glucose-6-phosphate dehydrogenase (G6PD) present in Saccahromyces cerevisiae is an enzyme of the pentose pathway. An effective enrichment of this intracellular enzyme can be achieved with the reversed micellar methodology. In this work, this methodology was employed with soybean lecithin, a biocompatible surfactant. A factorial design was used to evaluate the influence of pH (A) and extraction runs (B) on the G6PD purification factor. After statistical analysis and process optimization, a mathematical model representing G6PD enrichment was obtained: Y=4.89-0.83A+0.092B+0.27AB-1.37B2 with an enzyme purification factor of about 5.2.
authors.affiliation: Department of Biotechnology/Engineering School of Lorena/University of São Paulo, Rod. Itajubá-Lorena, Km 74.5, 12.600 - 000, P.O. Box 116, Lorena/SP, Brazil. francislene@debiq.faenquil.br
authors.forename: Francislene Andréia
authors.initials: FA
authors.lastname: Hasmann
authors.forename: Daniela
authors.initials: D
authors.lastname: de Borba Gurpilhares
authors.forename: Inês Conceição
authors.initials: IC
authors.lastname: Roberto
authors.forename: Adalberto
authors.initials: A
authors.lastname: Pessoa
mesh_terms: D000465:Algorithms; D005954:Glucosephosphate Dehydrogenase / Q000737:chemistry / Q000302:isolation & purification*; D008823:Micelles; D010713:Phosphatidylcholines / Q000737:chemistry*; D015203:Reproducibility of Results; D012441:Saccharomyces cerevisiae / Q000201:enzymology; D013025:Glycine max / Q000737:chemistry*; D013501:Surface-Active Agents / Q000737:chemistry
chemical_list: D008823:Micelles; D010713:Phosphatidylcholines; D013501:Surface-Active Agents; D005954:Glucosephosphate Dehydrogenase