Приказ основних података о документу

dc.creatorPavun, Leposava
dc.creatorUskokovic-Marković, Snežana
dc.creatorJelikic-Stankov, Milena
dc.creatorĐikanović, Daniela
dc.creatorDurdević, Predrag
dc.date.accessioned2022-04-05T15:14:04Z
dc.date.available2022-04-05T15:14:04Z
dc.date.issued2018
dc.identifier.issn1212-1800
dc.identifier.urihttp://rimsi.imsi.bg.ac.rs/handle/123456789/1135
dc.description.abstractWe propose a sensitive and selective spectrofluorimetric method for the determination of flavonoids as expressed in 'quercetin equivalent' in apple juices. The method is based on the strong emission of the aluminium(III)-quercetin complex at 480 nm with excitation at 420 nm, and it is successfully applied for the determination of flavonoids in commercial apple juices and compared with results obtained in reference spectrophotometric determination. The flavonoid content in commercial apple juices was found to range from 5.53 to 15.55 mg/l quercetin equivalent. The very good agreement between the two methods indicates the suitability of the proposed spectrofluorimetric method for the precise and accurate determination of flavonoids. In addition, the total polyphenol content was determined spectrophotometrically using the Folin-Ciocalteu (FC) method and the antioxidative activity of the tested juices was tested in a DPPH assay and these values were correlated with each other. The obtained profiles of compounds with antioxidative ability lead us to conclude that fruit juice labels based only on fruit % might sometimes misinform consumers.en
dc.publisherCzech Academy Agricultural Sciences, Prague
dc.relationinfo:eu-repo/grantAgreement/MESTD/Basic Research (BR or ON)/172016/RS//
dc.relationinfo:eu-repo/grantAgreement/MESTD/Basic Research (BR or ON)/172043/RS//
dc.relationinfo:eu-repo/grantAgreement/MESTD/Basic Research (BR or ON)/173017/RS//
dc.rightsopenAccess
dc.sourceCzech Journal of Food Sciences
dc.subjectspectrophotometryen
dc.subjectspectrofluorimetryen
dc.subjectquercetinen
dc.subjectantioxidant activityen
dc.subjectaluminiumen
dc.titleDetermination of Flavonoids and Total Polyphenol Contents in Commercial Apple Juicesen
dc.typearticle
dc.rights.licensePublisher's own license
dc.citation.epage238
dc.citation.issue3
dc.citation.other36(3): 233-238
dc.citation.rankM23
dc.citation.spage233
dc.citation.volume36
dc.identifier.doi10.17221/211/2017-CJFS
dc.identifier.fulltexthttp://rimsi.imsi.bg.ac.rs/bitstream/id/112/1132.pdf
dc.identifier.scopus2-s2.0-85049382451
dc.identifier.wos000437015500006
dc.type.versionpublishedVersion


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Приказ основних података о документу