Novel Routes for Valorisation of Grape Pomace Through the Production of Bioactives by Aspergillus niger

  • María-Rocío MeiniEmail author
  • Laura L. Ricardi
  • Diana Romanini
Original Paper


Grape pomace is an abundant winery by-product produced worldwide, which contains a high concentration of polyphenols trapped in cell wall fibers. The fungus tannase enzyme finds many applications in the industry, but its use is currently limited. This is due to its high production cost derived from tannic acid, which is the typical inductor of tannase enzyme by Aspergillus species. Therefore, assessment of natural tannin sources as inductors is a strategy to overcome this limitation. We propose here to employ the red grape pomace, which is a rich source of tannins and polyphenols. We found that, although grape pomace is not able to induce tannase by itself, it is a useful complement for tannic acid induction, reducing the concentration of tannic acid necessary to achieve maximum levels of tannase induction, which ranged between 3.0 and 4.5 U/mL. We also explored the potential usage of this biomass to induce other relevant industrial enzymes and quantified the recovery of gallic acid from grape pomace by the fungus fermentation; finding new routes for this by-product valorisation.

Graphic Abstract


Tannase Grape pomace Aspergillus niger Industrial enzymes Gallic acid 



This work was supported by grants from Agencia Nacional de Promoción Científica y Tecnológica, Argentina (PICT-2016-4463 and PICT-2016-1170). The authors would like to thank BordeRío Bodega & Viñedos, AER INTA-Victoria, and Bodegas Salentein, Argentina for supplying the grape pomace.


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Copyright information

© Springer Nature B.V. 2019

Authors and Affiliations

  1. 1.Instituto de Procesos Biotecnológicos y Químicos (IPROBYQ), Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Facultad de Ciencias Bioquímicas y Farmacéuticas, Universidad Nacional de Rosario (UNR)RosarioArgentina
  2. 2.Área Biofísica, Facultad de Ciencias Bioquímicas y Farmacéuticas. UNRRosarioArgentina
  3. 3.Departamento de Tecnología, Facultad de Ciencias Bioquímicas Y Farmacéuticas. UNRRosarioArgentina

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