Detail publikačního výsledku
WHY POLYPHENOLS PRESENT IN SPENT COFFEE GROUNDS INHIBIT THE GROWTH OF BACTERIA PRODUCING POLYHYDROXYALKANOATES?
KOVALČÍK, A.; MATOUŠKOVÁ, P.; KUČERA, D.; OBRUČA, S.; MÁROVÁ, I.
Original Title
WHY POLYPHENOLS PRESENT IN SPENT COFFEE GROUNDS INHIBIT THE GROWTH OF BACTERIA PRODUCING POLYHYDROXYALKANOATES?
English Title
WHY POLYPHENOLS PRESENT IN SPENT COFFEE GROUNDS INHIBIT THE GROWTH OF BACTERIA PRODUCING POLYHYDROXYALKANOATES?
Type
Paper in proceedings (conference paper)
Original Abstract
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.
English abstract
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.
Keywords
Bacteria; biopolymers; hydrolysis; inhibitors
Key words in English
Bacteria; biopolymers; hydrolysis; inhibitors
Authors
KOVALČÍK, A.; MATOUŠKOVÁ, P.; KUČERA, D.; OBRUČA, S.; MÁROVÁ, I.
RIV year
2019
Released
06.07.2018
Publisher
ETA - Florence Renewable Energies
Location
Florence, Italy
Book
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
ISBN
2282-5819
Periodical
EUROPEAN BIOMASS CONFERENCE AND EXHIBITION PROCEEDINGS
Volume
26th EUBCE
Number
2018
State
Republic of Italy
Pages from
960
Pages to
964
Pages count
5
URL
Full text in the Digital Library
BibTex
@inproceedings{BUT149091,
author="Adriána {Kovalčík} and Petra {Skoumalová} and Dan {Kučera} and Stanislav {Obruča} and Ivana {Márová}",
title="WHY POLYPHENOLS PRESENT IN SPENT COFFEE GROUNDS INHIBIT THE GROWTH OF BACTERIA PRODUCING POLYHYDROXYALKANOATES?",
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",
year="2018",
journal="EUROPEAN BIOMASS CONFERENCE AND EXHIBITION PROCEEDINGS",
volume="26th EUBCE",
number="2018",
pages="960--964",
publisher="ETA - Florence Renewable Energies",
address="Florence, Italy",
issn="2282-5819",
url="http://www.etaflorence.it/proceedings/index.asp?conference=2018"
}Documents