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Article

The Application Potential of Hop Sediments from Beer Production for Composting

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Department of Agricultural and Environmental Chemistry, University of Agriculture in Krakow, al. Mickiewicza 21, 31-120 Krakow, Poland
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Department of Microbiology and Biomonitoring, University of Agriculture in Krakow, al. Mickiewicza 24/28, 30-059 Krakow, Poland
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Department of Fermentation Technology and Microbiology, University of Agriculture in Krakow, ul. Balicka 122, 30-149 Krakow, Poland
*
Author to whom correspondence should be addressed.
Academic Editor: Antoni Sánchez
Sustainability 2021, 13(11), 6409; https://doi.org/10.3390/su13116409
Received: 8 April 2021 / Revised: 26 May 2021 / Accepted: 31 May 2021 / Published: 4 June 2021
(This article belongs to the Special Issue Soil Use Management and Soil Health)
The chemical composition of hop sediments from beer brewing and fermentation gives them the potential for further use. These wastes are not generated in large amounts, but the absence of proper characteristics may lead to processing errors. This study examines the possibility of using hop waste for aerobic biological transformation processes (composting). The study was carried out on two hop sediments from two different technological stages of beer production: hot trub and spent hops. Chemical, microbiological, and biochemical analyses were performed in the composted hop sediments, as was the assessment of phytotoxicity to Lepidium sativum L. The tested feedstocks were partially inhabited by microorganisms and thus safe from an epidemiological point of view, and they were not a source of microbial contamination. Inhibitory properties for plant development were found for hot trub, which most likely result from the organic compound content. If it is only a small portion of its biomass, the mineral composition of hot trub does not exclude the possibility of its composting. Spent hops were characterized by a significant total nitrogen content, which affected the composting process. Composting this sediment required the selection of substrates with a widely C:N ratio. View Full-Text
Keywords: hop sediments; respiratory activity; compost; brewing; phytotoxicity hop sediments; respiratory activity; compost; brewing; phytotoxicity
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MDPI and ACS Style

Kopeć, M.; Mierzwa-Hersztek, M.; Gondek, K.; Wolny-Koładka, K.; Zdaniewicz, M.; Suder, A. The Application Potential of Hop Sediments from Beer Production for Composting. Sustainability 2021, 13, 6409. https://doi.org/10.3390/su13116409

AMA Style

Kopeć M, Mierzwa-Hersztek M, Gondek K, Wolny-Koładka K, Zdaniewicz M, Suder A. The Application Potential of Hop Sediments from Beer Production for Composting. Sustainability. 2021; 13(11):6409. https://doi.org/10.3390/su13116409

Chicago/Turabian Style

Kopeć, Michał, Monika Mierzwa-Hersztek, Krzysztof Gondek, Katarzyna Wolny-Koładka, Marek Zdaniewicz, and Aleksandra Suder. 2021. "The Application Potential of Hop Sediments from Beer Production for Composting" Sustainability 13, no. 11: 6409. https://doi.org/10.3390/su13116409

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