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dc.creatorAdnađević, Borivoj
dc.creatorKoturević, Biljana
dc.creatorJovanović, Jelena
dc.date.accessioned2019-03-21T16:10:33Z
dc.date.available2019-03-21T16:10:33Z
dc.date.issued2017
dc.identifier.issn0263-8762
dc.identifier.urihttp://jakov.kpu.edu.rs/handle/123456789/788
dc.description.abstractThe kinetics of the isothermal extraction of caffeine from the guarana seed powder with water under conventional (CH) and microwave heating (MWH) were investigated. By applying the isoconversional method, it was established that the kinetics of the caffeine extraction under CH and also under MWH is an elementary kinetic process. The model fitting method was used to determine the kinetics model of caffeine extraction. It was found that the kinetics of the caffeine extraction for both heating modes can be described by the Jander's equation. The rate of the extraction of caffeine under MWH is similar to 2 times higher than under CH. The values of kinetics parameters (Ea and lnA) of the extraction process under MWH are lower than for CH. The established influence of MWH on the kinetics of caffeine extraction is explained with a specific activation mechanism of water molecules and with an increase in the energy of the ground vibration level of resonant oscillator of N-3-CH3 band of caffeine molecule (v=317 cm(-1)) which is caused by the absorption of microwave energy.en
dc.publisherInst Chemical Engineers, Rugby
dc.relationinfo:eu-repo/grantAgreement/MESTD/Basic Research (BR or ON)/172015/RS//
dc.rightsrestrictedAccess
dc.sourceChemical engineering research & design
dc.subjectCaffeineen
dc.subjectConventional extractionen
dc.subjectGuaranaen
dc.subjectKineticsen
dc.subjectMicrowave extractionen
dc.titleComparative kinetic analysis of isothermal extraction of caffeine from guarana seed under conventional and microwave heatingen
dc.typearticle
dc.rights.licenseARR
dcterms.abstractAднађевић, Боривој; Котуревић, Биљана; Јовановић, Јелена;
dc.citation.volume118
dc.citation.spage61
dc.citation.epage70
dc.citation.other118: 61-70
dc.citation.rankM22
dc.identifier.doi10.1016/j.cherd.2016.12.006
dc.identifier.scopus2-s2.0-85007246699
dc.identifier.wos000394397200007
dc.type.versionpublishedVersion


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