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Impact of Process Parameters and Bulk Properties on Quality of Dried Hops

dc.date.accessioned2020-12-23T08:26:01Z
dc.date.available2020-12-23T08:26:01Z
dc.date.issued2020-11-20
dc.identifierdoi:10.17170/kobra-202012222889
dc.identifier.urihttp://hdl.handle.net/123456789/12367
dc.description.sponsorshipGefördert durch den Publikationsfonds der Universität Kasselger
dc.language.isoengeng
dc.rightsNamensnennung 4.0 International*
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/*
dc.subjectbulk weighteng
dc.subjecthop cones size distributioneng
dc.subjectchemical analysiseng
dc.subjectenergy consumptioneng
dc.subject.ddc570
dc.subject.ddc600
dc.titleImpact of Process Parameters and Bulk Properties on Quality of Dried Hopseng
dc.typeAufsatz
dcterms.abstractHops are critical to the brewing industry. In commercial hop drying, a large bulk of hops is dried in multistage kilns for several hours. This affects the drying behavior and alters the amount and chemical composition of the hop oils. To understand these changes, hops of the var. Hallertauer Tradition were dried in bulks of 15, 25 and 35 kg/m² at 60 °C and 0.35 m/s. Additionally, bulks of 25 kg/m² were also dried at 65 °C and 0.45 m/s to assess the effect of change in temperature and velocity, respectively. The results obtained show that bulk weights significantly influence the drying behavior. Classification based on the cone size reveals 45.4% medium cones, 41.2% small cones and 8.6% large cones. The highest ΔE value of 6.3 and specific energy consumption (113,476 kJ/kgH2O) were observed for the 15 kg/m² bulk. Increasing the temperature from 60 °C to 65 °C increased the oil yield losses by about 7% and myrcene losses by 22%. The results obtained show that it is important to define and consider optimum bulk and process parameters, to optimize the hop drying process to improve the process efficiency as well the product quality.eng
dcterms.accessRightsopen access
dcterms.creatorRaut, Sharvari
dcterms.creatorvon Gersdorff, Gardis J. E.
dcterms.creatorMünsterer, Jakob
dcterms.creatorKammhuber, Klaus
dcterms.creatorHensel, Oliver
dcterms.creatorSturm, Barbara
dc.relation.doidoi:10.3390/pr8111507
dc.subject.swdHopfenger
dc.subject.swdTrocknungger
dc.subject.swdSchüttdichteger
dc.subject.swdChemische Analyseger
dc.subject.swdEnergieverbrauchger
dc.subject.swdQualitätger
dc.type.versionpublishedVersion
dcterms.source.identifierEISSN 2227-9717
dcterms.source.issueIssue 11
dcterms.source.journalProcesseseng
dcterms.source.volumeVolume 8
kup.iskupfalse
dcterms.source.articlenumber1507


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