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Changes in hop (Humulus lupulus L.) oil content and composition during long-term storage under different conditions
ID
Rutnik, Ksenija
(
Author
),
ID
Ocvirk, Miha
(
Author
),
ID
Košir, Iztok Jože
(
Author
)
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MD5: 1028BF43549F006C84D69BEF03112858
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https://www.mdpi.com/2304-8158/11/19/3089
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Abstract
Hop essential oil, in addition to alpha-acids, is one of the most valuable parameters for brewers, since it is responsible for beer aroma. The hop oil content and hop oil chemical composition deliver various aromas to beer. During storage, the hop chemical composition undergoes many physical and chemical changes that impact its quality. The main purpose of our study was to evaluate the changes occurring in hop oil content and its chemical composition during two years of storage under four different conditions (anaerobic, aerobic, cold room (4 °C), and room temperature) in the form of cones and pellets, supplied by local suppliers in Slovenia. Hop oil content and composition were determined by steam distillation and GC-FID. The greatest decrease in hop essential oil content occurred when the hops were stored under aerobic conditions and at room temperature. Monitoring of eight hop oil compounds under various conditions revealed different behaviors of the changes. The best storage conditions were anaerobic at low temperatures. Oxygen resistance was lower for pellets than for hop cones, whereas high temperature was more devastating for hop cones. In addition to the storage conditions, the hop variety and form were important factors regulating the extent of changes in hop oil content and chemical composition.
Language:
English
Keywords:
hops
,
storage stability
,
essential oils
,
hop oil composition
Work type:
Article
Typology:
1.01 - Original Scientific Article
Organization:
BF - Biotechnical Faculty
Publication status:
Published
Publication version:
Version of Record
Year:
2022
Number of pages:
20 str.
Numbering:
Vol. 11, iss. 19, art. 3089
PID:
20.500.12556/RUL-155484
UDC:
633.791
ISSN on article:
2304-8158
DOI:
10.3390/foods11193089
COBISS.SI-ID:
128588291
Publication date in RUL:
04.04.2024
Views:
335
Downloads:
61
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Record is a part of a journal
Title:
Foods
Shortened title:
Foods
Publisher:
MDPI
ISSN:
2304-8158
COBISS.SI-ID:
512252472
Licences
License:
CC BY 4.0, Creative Commons Attribution 4.0 International
Link:
http://creativecommons.org/licenses/by/4.0/
Description:
This is the standard Creative Commons license that gives others maximum freedom to do what they want with the work as long as they credit the author.
Secondary language
Language:
Slovenian
Keywords:
hmelj
,
skladiščenje
,
eterična olja
,
sestava
Projects
Funder:
ARRS - Slovenian Research Agency
Project number:
603-1/2019-15
Funder:
ARRS - Slovenian Research Agency
Project number:
Z4-2655
Name:
Proučevanje vplivov staranja hmelja na lastnosti piva
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