Determination of polyphenols of Isabella and Othello grape varieties

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dc.contributor.advisorSzőllősi, Erzsébet
dc.contributor.advisorPesti-Asbóth, Georgina
dc.contributor.authorNgo, Kieu Thao Linh
dc.contributor.departmentDE--Mezőgazdaság- Élelmiszertudományi és Környezetgazdálkodási Karhu_HU
dc.date.accessioned2021-11-05T10:30:56Z
dc.date.available2021-11-05T10:30:56Z
dc.date.created2021-11-05
dc.description.abstractThe study focused on the determination and comparison of the total phenolic contents in the seeds, skin, and flesh of two grape hybrids, namely Isabella (Vitis vinifera × Vitis labrusca) and Othello (Vitis labrusca × Vitis riparia × Vitis vinifera) grown in Debrecen, Hungary, as well as their anthocyanin compositions in the skin fraction by the vortex-mixing and ultrasonic-cleaning extraction procedures. The impacts of two different experimental designing methods on the profile of phenolic and individual anthocyanin compounds in analyzed extracts were evaluated. The highest concentration of phenolics determined by Folin-Ciocalteu assay was found in the grape seeds, followed by skins and flesh. The predominant individual anthocyanins in all examined grape skin extracts were malvidin-3-O-glucoside, identified by the reversed-phase high-performance liquid chromatography (HPLC). The results showed that the quantification of total phenols and anthocyanin compositions is dependent on the genome of grape cultivars.hu_HU
dc.description.courseFood Engineeringhu_HU
dc.description.degreeBSc/BAhu_HU
dc.format.extent48hu_HU
dc.identifier.urihttp://hdl.handle.net/2437/324085
dc.language.isoenhu_HU
dc.subjectred grapeshu_HU
dc.subjectanthocyaninshu_HU
dc.subjecttotal phenolic contenthu_HU
dc.subjectvortex-mixinghu_HU
dc.subjectultrasonic-cleaninghu_HU
dc.subject.dspaceDEENK Témalista::Mezőgazdaságtudományhu_HU
dc.titleDetermination of polyphenols of Isabella and Othello grape varietieshu_HU
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