Detail publikace

WHY POLYPHENOLS PRESENT IN SPENT COFFEE GROUNDS INHIBIT THE GROWTH OF BACTERIA PRODUCING POLYHYDROXYALKANOATES?

Originální název

WHY POLYPHENOLS PRESENT IN SPENT COFFEE GROUNDS INHIBIT THE GROWTH OF BACTERIA PRODUCING POLYHYDROXYALKANOATES?

Anglický název

WHY POLYPHENOLS PRESENT IN SPENT COFFEE GROUNDS INHIBIT THE GROWTH OF BACTERIA PRODUCING POLYHYDROXYALKANOATES?

Jazyk

en

Originální abstrakt

Our study aims at suggesting detoxification methodology, which would enable to extract phenolic compounds from spent coffee grounds (SCGs) hydrolysates to produce inhibitor-free hydrolysates. SCGs arise as a waste product through the production of instant coffee and coffee brewing. SCGs contain an oil fraction and a lignocellulosic fraction, which can be used as a carbon substrate for bacteria producing polyhydroxyalkanoates (PHA). Fermentable sugars are transformed from SCGs via chemical hydrolysis. However, SCG hydrolysates contain also phenolic compounds, which are too toxic for PHA producing bacteria and partially even completely inhibit their growth. Our results showed that the multi-stepped extractions' methodology enabled to extract phenolic compounds and produce inhibitor-free SCG hydrolysates from which may profit PHA producing bacteria. Moreover, extracted phenolics reveal high antimicrobial activity, and therefore, they can be used in numerous high-value applications.

Anglický abstrakt

Our study aims at suggesting detoxification methodology, which would enable to extract phenolic compounds from spent coffee grounds (SCGs) hydrolysates to produce inhibitor-free hydrolysates. SCGs arise as a waste product through the production of instant coffee and coffee brewing. SCGs contain an oil fraction and a lignocellulosic fraction, which can be used as a carbon substrate for bacteria producing polyhydroxyalkanoates (PHA). Fermentable sugars are transformed from SCGs via chemical hydrolysis. However, SCG hydrolysates contain also phenolic compounds, which are too toxic for PHA producing bacteria and partially even completely inhibit their growth. Our results showed that the multi-stepped extractions' methodology enabled to extract phenolic compounds and produce inhibitor-free SCG hydrolysates from which may profit PHA producing bacteria. Moreover, extracted phenolics reveal high antimicrobial activity, and therefore, they can be used in numerous high-value applications.

BibTex


@inproceedings{BUT149091,
  author="Adriána {Kovalčík} and Petra {Matoušková} and Dan {Kučera} and Stanislav {Obruča} and Ivana {Márová}",
  title="WHY POLYPHENOLS PRESENT IN SPENT COFFEE GROUNDS INHIBIT THE GROWTH OF BACTERIA PRODUCING POLYHYDROXYALKANOATES?",
  annote="Our study aims at suggesting detoxification methodology, which would enable to extract phenolic
compounds from spent coffee grounds (SCGs) hydrolysates to produce inhibitor-free hydrolysates. SCGs arise as a waste product through the production of instant coffee and coffee brewing. SCGs contain an oil fraction and a lignocellulosic fraction, which can be used as a carbon substrate for bacteria producing polyhydroxyalkanoates (PHA). Fermentable sugars are transformed from SCGs via chemical hydrolysis. However, SCG hydrolysates contain also phenolic compounds, which are too toxic for PHA producing bacteria and partially even completely inhibit their growth. Our results showed that the multi-stepped extractions' methodology enabled to extract phenolic compounds and produce inhibitor-free SCG hydrolysates from which may profit PHA producing bacteria. Moreover, extracted phenolics reveal high antimicrobial activity, and therefore, they can be used in numerous high-value applications.",
  address="ETA - Florence Renewable Energies",
  booktitle="Papers of the 26th European Biomass Conference. Setting the course for a biobased economy. Extracted from the Proceedings of the International Conference held in Copenhagen, Denmark, 14 - 17 May 2018",
  chapter="149091",
  howpublished="online",
  institution="ETA - Florence Renewable Energies",
  number="2018",
  year="2018",
  month="july",
  pages="960--964",
  publisher="ETA - Florence Renewable Energies",
  type="conference paper"
}