Publication detail

Biotechnological conversion of spent coffee grounds into polyhydroxyalkanoates and carotenoids

OBRUČA, S. BENEŠOVÁ, P. KUČERA, D. PETRIK, S. MÁROVÁ, I.

Original Title

Biotechnological conversion of spent coffee grounds into polyhydroxyalkanoates and carotenoids

Type

journal article in Web of Science

Language

English

Original Abstract

Coffee is one of the world's most popular beverages and has been growing steadily in commercial importance. Nowadays, coffee is the second largest traded commodity in the world, after petroleum. Hence, coffee industry is responsible for the generation of large amounts of waste, especially spent coffee grounds (SCG). Various attempts to valorize this waste stream of coffee industry were made. This article summarizes our research and publications aiming at the conversion of SCG into valuable products polyhydroxyalkanoates (PHAs) and carotenoids. At first, oil extracted from SCG (approx. 15 wt% oil in SCG) can be efficiently (Y-P/S = 0.82 g/g) converted into PHA employing Cupriavidus necator H16. Further, the solid residues after oil extraction can be hydrolyzed (by the combination of chemical and enzymatic hydrolysis) yielding fermentable sugars, which can be further used as a substrate for the production of PHAs employing Bacillus megaterium (Y-P/S = 0.04 g/g) or Burkholderia cepacia (Y-P/S = 0.24 g/g). Alternatively, SCG hydrolysate can be used as a substrate for biotechnological production of carotenoids by carotenogenic yeast Sporobolomyces roseus. Solid residues after either oil extraction or hydrolysis can be used as fuel in industrial boilers to generate heat and energy. Therefore, entire biomass of SCG can be used for sustainable production of PHAs and/or carotenoids employing bio-refinery approach.

Keywords

Spent coffee grounds, polyhydroxyalkanoates, carotenoids, biorefinery

Authors

OBRUČA, S.; BENEŠOVÁ, P.; KUČERA, D.; PETRIK, S.; MÁROVÁ, I.

RIV year

2015

Released

1. 9. 2015

Publisher

Elsevier

ISBN

1871-6784

Periodical

New Biotechnology

Year of study

32

Number

6

State

Kingdom of the Netherlands

Pages from

569

Pages to

574

Pages count

5

URL

http://www.sciencedirect.com.ezproxy.lib.vutbr.cz/science/article/pii/S1871678415000333

BibTex

@article{BUT116469,
  author="Stanislav {Obruča} and Pavla {Benešová} and Dan {Kučera} and Siniša {Petrik} and Ivana {Márová}",
  title="Biotechnological conversion of spent coffee grounds into polyhydroxyalkanoates and carotenoids",
  journal="New Biotechnology",
  year="2015",
  volume="32",
  number="6",
  pages="569--574",
  doi="10.1016/j.nbt.2015.02.008",
  issn="1871-6784",
  url="http://www.sciencedirect.com.ezproxy.lib.vutbr.cz/science/article/pii/S1871678415000333"
}