Microbial community of hops (Humulus lupulus L.) and its impact on the quality of hop products
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F14864347%3A_____%2F21%3AN0000022" target="_blank" >RIV/14864347:_____/21:N0000022 - isvavai.cz</a>
Result on the web
<a href="https://www.actahort.org/books/1328/1328_15.htm" target="_blank" >https://www.actahort.org/books/1328/1328_15.htm</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.17660/ActaHortic.2021.1328.15" target="_blank" >10.17660/ActaHortic.2021.1328.15</a>
Alternative languages
Result language
angličtina
Original language name
Microbial community of hops (Humulus lupulus L.) and its impact on the quality of hop products
Original language description
During the growing seasons 2015-2019, the composition of the microbial community on the surface of leaves and cones of hop plants cultivated in the ‘Saaz’ hop growing area (Czech Republic) was studied. During the growing seasons, several leaf samplings were carried out between June to September. Cones were sampled immediately before harvesting. All species of bacteria were identified using the microbiological ID system Biolog (Biolog, Hayward, California). The fungi were identified at the genera level, using microscopic observations and the morphological appearance of the colonies on the dishes. In the bacterial community, Bacillus species (megatherium, idriensis, indicus, endophyticus) and Pantoea species (agglomerans, dispersa) were most frequently identified. Fungi of the genus Talaromyces, Penicillium, Alternaria, Fusarium, and Rhizopus were regularly identified on leaves and cones surfaces. Bacteria of Pantoea sp. have also been found in dry hops and even in hop pellets packed in barrier aluminium bags in a modified inert atmosphere. It has been found that bacteria of the genus Pantoea can metabolize hops carbohydrates at room temperature in the absence of oxygen while releasing carbon dioxide. This process is manifested externally by inflating and increasing the volume of bags with hop pellets. This causes logistical problems during handling and transport. This undesirable process can be effectively suppressed by reducing the amount of biological impurities in the harvested hops and storage of pellets in air-conditioned warehouses at temperatures up to +5°C.
Czech name
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Czech description
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Classification
Type
D - Article in proceedings
CEP classification
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OECD FORD branch
40106 - Agronomy, plant breeding and plant protection; (Agricultural biotechnology to be 4.4)
Result continuities
Project
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Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2021
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Article name in the collection
Acta Horticulturae 1328
ISBN
978-94-62613-25-6
ISSN
0567-7572
e-ISSN
2406-6168
Number of pages
6
Pages from-to
109-114
Publisher name
International Society for Horticultural Science
Place of publication
Leuven
Event location
Stuttgart
Event date
Mar 8, 2021
Type of event by nationality
WRD - Celosvětová akce
UT code for WoS article
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