Publicado

2014-05-01

Polyhydroxyalkanoate production from uenexplored sugar substrates

Producción de polihidroxialcanoatos a partir de sustratos azucarados inexplorados

DOI:

https://doi.org/10.15446/dyna.v81n185.36844

Palabras clave:

polyhydroxyalkanoate (PHA), polyhydroxybutyrate (PHB), carob pulp, fique juice (en)
polihidroxialcanoato (PHA), polihidroxibutirato (PHB), pulpa de algarrobo, jugo de fique (es)

Autores/as

  • Alejandro Salazar Universidad Nacional de Colombia - Sede Medellín - Facultad de Ciencias
  • Maria Yepes Universidad Nacional de Colombia - Sede Medellín - Facultad de Ciencias
  • Guillermo Correa Universidad Nacional de Colombia - Sede Medellín - Facultad de Ciencias Agropecuarias
  • Amanda Mora Universidad Nacional de Colombia - Sede Medellín - Facultad de Ciencias - Facultad de Ciencias
Industrial-scale production of biopolymers is restricted by its elevated production costs in comparison with those associated with synthetic (no-biodegradable and no-biocompatible) polymers. In this study we tested for the first time two low-cost carbon substrates (i.e. carob pulp and fique juice) for lab-scale production of polyhydroxyalkanoate (PHA) with Bacillus megaterium. PHA detection and quantification was conducted by gas chromatography/mass spectrometry-selected ion monitoring (GC/MS-SIM). The results suggest that PHA production using carob pulp (from Hymenaea courbaril) may be as high as with sugar cane molasses. Moreover, it could serve for the synthesis of the most commercialized type of PHA (i.e. polyhydroxybutyrate; PHB) and/or other varieties (e.g. polyhydroxy-butyrate-co-valerate; PHBV) with different properties and potential applications.
La producción de biopolímeros a escala industrial es restringida por los elevados costos de producción, en comparación con aquellos asociados a polímeros sintéticos (no biodegradables y no biocompatibles). En este estudio evaluamos por primera vez dos sustratos de carbono de bajo costo (i.e. pulpa de algarrobo y jugo de fique) para la producción a escala de laboratorio de polyhydroxyalcanoato (PHA) con Bacillus megaterium. La detección e identificación de PHA se hizo mediante cromatografía de gases con detector selectivo de masas operado en el modo de Monitoreo de Ion Selectivo (GC-MS/SIM). Los resultados sugieren que la producción de PHA a partir de pulpa de algarrobo (de Hymenaea courbaril) puede ser tan alta como con melaza de caña. Más aún, puede servir para la síntesis del tipo de PHA más comercializado (i.e. polihidroxibutirato; PHB) y/o de otras variedades (e.g. polihidroxi-butirato-co-valerato; PHBV) con diferentes propiedades y posibles aplicaciones.

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