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dc.creatorPavun, Leposava
dc.creatorUskoković-Marković, Snežana
dc.creatorJelikić-Stankov, Milena
dc.creatorĐikanović, Daniela
dc.creatorĐurđević, Predrag
dc.date.accessioned2019-09-02T12:08:26Z
dc.date.available2019-09-02T12:08:26Z
dc.date.issued2018
dc.identifier.issn1212-1800
dc.identifier.urihttps://farfar.pharmacy.bg.ac.rs/handle/123456789/3241
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.rightsopenAccess
dc.sourceCzech Journal of Food Sciences
dc.subjectaluminiumen
dc.subjectantioxidant activityen
dc.subjectquercetinen
dc.subjectspectrofluorimetryen
dc.subjectspectrophotometryen
dc.titleDetermination of Flavonoids and Total Polyphenol Contents in Commercial Apple Juicesen
dc.typearticle
dc.rights.licenseARR
dcterms.abstractЂикановић, Даниела; Павун, Лепосава; Ђурђевић, Предраг; Ускоковић-Марковић, Снежана; Јеликић-Станков, Милена;
dc.citation.volume36
dc.citation.issue3
dc.citation.spage233
dc.citation.epage238
dc.citation.other36(3): 233-238
dc.citation.rankM23
dc.identifier.wos000437015500006
dc.identifier.doi10.17221/211/2017-CJFS
dc.identifier.scopus2-s2.0-85049382451
dc.identifier.fulltexthttps://farfar.pharmacy.bg.ac.rs//bitstream/id/1817/3239.pdf
dc.type.versionpublishedVersion


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Приказ основних података о документу