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Title: Vpliv vinogradniških tehnologij na vsebnost metabolitov v grozdju sorte ‘Modra frankinja’ Authors: ID Vanzo, Andreja (Mentor) More about this mentor... ID Sivilotti, Paolo (Mentor) More about this mentor... ID Tomše, Ana Marija (Author) Files: Ana_Marija_Tomse.pdf (3,95 MB) MD5: 21E3D6FA94EA6DCF019B9EB76C3251AC   Language: Slovenian Work type: Bachelor thesis/paper Typology: 2.11 - Undergraduate Thesis Organization: VŠVV - College of Viticulture and Enology Abstract: V grozdju sorte ‘Modra frankinja’ (Vitis vinifera L.), vinorodni okoliš Dolenjska, smo leta 2013 preučevali vpliv vinogradniških tehnologij: odstranjevanja listov v predelu grozdja (razlistanja) pred fazo cvetenja in redčenja grozdja v fazi vèraison v primerjavi s kontrolo. Grozdje smo vzorčili teden pred trgatvijo, v času trgatve in teden po tem. V svežem grozdnem soku smo določili vsebnost suhe snovi, skupnih titrabilnih kislin in pH-vrednost. Vsebnost in profil antocianov smo določili v metanolnih ekstraktih grozdnih kožic s pomočjo tekočinske kromatografije visoke ločljivosti. Redčenje grozdja v fazi vèraison je vplivalo na statistično značilno večje povprečne: mase kožic, vsebnosti suhe snovi in pH-vrednosti v primerjavi z razlistanjem pred fazo cvetenja ob času trgatve in teden po tem, medtem ko se kontrola ni statistično značilno razlikovala od redčenja grozdja. Razlike v povprečni masi grozdja in vsebnosti skupnih titrabilnih kislin med tehnologijami niso bile statistično značilne ob nobenem terminu vzorčenja. Povprečna vsebnost skupnih monomernih antocianov v grozdju je bila ob času trgatve največja pri redčenju grozdja v fazi vèraison, vendar razlike med tehnologijami niso bile statistično značilne. Malvidin 3-glukozid je najbolj zastopan antocian pri sorti ‘Modra frankinja’. Lastnost sorte je tudi manjša vsebnost acilatov od kumaratov. Redčenje grozdja v fazi vèraison je najbolj vplivalo na izboljšano kakovost grozdja glede na spremljane parametre. Keywords: ‘Modra frankinja’ (Vitis vinifera L.), odstranjevanje listov pred fazo cvetenja, redčenje grozdja v fazi vèraison, antociani, profil antocianov. Place of publishing: Nova Gorica Year of publishing: 2015 PID: 20.500.12556/RUNG-1965  COBISS.SI-ID: 4025339  NUK URN: URN:SI:UNG:REP:KGS7LFCI Publication date in RUNG: 15.09.2015 Views: 9508 Downloads: 314 Metadata:    Cite this work Plain text BibTeX EndNote XML EndNote/Refer RIS ABNT ACM Ref AMA APA Chicago 17th Author-Date Harvard IEEE ISO 690 MLA Vancouver : TOMŠE, Ana Marija, 2015, Vpliv vinogradniških tehnologij na vsebnost metabolitov v grozdju sorte ‘Modra frankinja’ [online]. Bachelor’s thesis. Nova Gorica. [Accessed 3 April 2025]. Retrieved from: https://repozitorij.ung.si/IzpisGradiva.php?lang=eng&id=1965 Copy citation

Average score: 0.5 1 1.5 2 2.5 3 3.5 4 4.5 5 (0 votes) Your score: Voting is allowed only for logged in users. Share: Similar works from our repository: Change in yield parameters and grape anthocyanin profile of Vitis vinifera L. 'Refošk' as affected by cluster thinning and pre-flowering leaf removal Vitis vinifera root and leaf metabolic composition during fruit maturation Pre-flowering leaf removal alters grape microbial population and offers good potential for a more sustainable and cost-effective management of a Pinot Noir vineyard Vpliv zgodnjega odstranjevanja listov pri sortah Vitis vinifera 'Cabernet Sauvignon' in 'Merlot' na osnovne kakovostne parametre in vsebnost metoksipirazinov v grozdju Vpliv okužbe z virusom pahljačavosti listov vinske trte (GFLV) na kakovost grozdja sorte Refošk in Pokalca (Vitis vinifera L.) Similar works from other repositories: Yield reduction through cluster or selective berry thinning similarly modulates anthocyanins and proanthocyanidins composition in Refosco dal peduncolo rosso (Vitis vinifera L.) grapes ǂThe ǂampelographic characteristic and viticultural and winemaking practices of grape and wine production of the grapevine (Vitis vinifera L.) "Blaufränkisch" variety Effect of varietal ampelotehnic [i.e. ampelotechnic] on quality and quantity of grape (Vitis vinifera L.) variety Modra frankinja Grapevine (Vitis vinifera L.) protection in ecological production Audit of grapevine variety 'Modra frankinja' (Vitis vinifera L.) cultivation in Bela krajina Hover the mouse pointer over a document title to show the abstract or click on the title to get all document metadata.

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Language:	English
Abstract:	In the wine district of Dolenjska, the grape variety ‘Modra frankinja’ (Vitis vinifera L.) was subjected to vineyard treatments, such as pre-flowering leaf removal and cluster thinning at vèrasion as well as being compared to a control. Grapes were sampled at three stages, a week before harvest, at harvest and a week after harvest. Contents of total soluble solids, total titratable acids and pH value were determined in fresh grape juice. The content and profile of anthocyanins was determined by high performance liquid chromatography. Cluster thinning at vèraison resulted in a statistically significant higher average in: berry skin mass, content of total soluble solids and PH value in comparison to pre-flowering leaf removal at harvest time and a week after. Control did not statistically differ from cluster thinning at those sampling dates. The average grape mass and content of total titratable acids were not statistically different between treatments at each of the sampling dates. The average content of total monomeric anthocyanins in grapes was at harvest, the highest in treatment of cluster thinning at vèraison, however differences between treatments were not statistically significant. Malvidin 3-glucoside was the most representative anthocyanin in ‘Modra frankinja’ grapes. It was found that there was a lower content of acylates than coumarates. Regarding the investigated parameters, cluster thinning at vèraison had the most positive impact on improved grape quality.
Keywords:	‘Modra frankinja’ (Vitis vinifera L.), pre-flowering leaf removal, cluster thinning at vèraison, anthocyanins, profile of anthocyanins.

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