Obtaining lipids and carbohydrates from microalgae via design of selective culture media

  • Ana M. Ardila-Álvarez Universidad Nacional Abierta y a Distancia
  • Yaritza López-Matos Universidad Industrial de Santander
  • Marlys E. Vásquez-Cáceres Universidad Industrial de Santander
  • Ángel D. González-Delgado Universidad de Cartagena
  • Andrés F. Barajas-Solano Universidad de Santander UDES
Keywords: Mixotrophic cultures, chlorella vulgaris, nutrients, carbohydrates, lipids.

Abstract

Sustainable production of microalgae biorefineries presents several technical bottlenecks in different levels, including maximization of productivity of energy blocks as carbohydrates and lipids, which can be used as feedstocks for biodiesel and bioethanol production. An alternative for increasing productivity of energy blocks is the use of alternative crops to traditional chemical media, which are based on carbon, phosphorus, nitrogen sources and microelements. This work presents the design of two mixotrophic crops were designed at different concentrations of carbon, nitrogen and phosphate sources with the aim of evaluating the carbohydrates and lipids production from Chlorella vulgaris. The culture media were designed at different concentrations of sodium nitrate, potassium phosphate and sodium acetate / ammonium carbonate as carbon source. In addition, Pareto charts and Response Surface were performed using the statistical software STATISTICA 7.0, in order to know the significant influence of study variables on metabolites production. Results showed that the concentration of nutrients in the mixotrophic cultures affect the production of metabolites, for the case of carbohydrates production, acetate, carbonate and phosphate had a positive effect on it. Regarding lipids production, when the culture media contained acetate, there was not any variable that influenced significantly, whereas for the cultivation with ammonium carbonate, nitrate and interactions carbonate-phosphate, nitrate-phosphate had a significant influence on production of this metabolite.

Author Biographies

Ana M. Ardila-Álvarez, Universidad Nacional Abierta y a Distancia
MSc. en Ingeniería Química, Escuela de Ciencias Agrícolas Pecuarias y del Medio Ambiente -ECAPMA, Universidad Nacional Abierta y a Distancia, Bucaramanga
Yaritza López-Matos, Universidad Industrial de Santander
Ingeniera Química, Universidad Industrial de Santander, Bucaramanga
Marlys E. Vásquez-Cáceres, Universidad Industrial de Santander
Ingeniera Química, Universidad Industrial de Santander, Bucaramanga
Ángel D. González-Delgado, Universidad de Cartagena
PhD. en Ingeniería Química, Facultad de Ingeniería, Universidad de Cartagena, Cartagena
Andrés F. Barajas-Solano, Universidad de Santander UDES
PhD. en Ingeniería Química, Grupo Ambiental de Investigación Aplicada-GAIA, Facultad de Ingenierías, Universidad de Santander UDES, Bucaramanga

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How to Cite
[1]
A. M. Ardila-Álvarez, Y. López-Matos, M. E. Vásquez-Cáceres, Ángel D. González-Delgado, and A. F. Barajas-Solano, “Obtaining lipids and carbohydrates from microalgae via design of selective culture media”, TecnoL., vol. 20, no. 38, pp. 83-94, Feb. 2017.

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Published
2017-02-21
Section
Research Papers