Polyphenolic composition of grape stems
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F62156489%3A43510%2F20%3A43918431" target="_blank" >RIV/62156489:43510/20:43918431 - isvavai.cz</a>
Result on the web
<a href="https://doi.org/10.15835/nbha48311936" target="_blank" >https://doi.org/10.15835/nbha48311936</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.15835/nbha48311936" target="_blank" >10.15835/nbha48311936</a>
Alternative languages
Result language
angličtina
Original language name
Polyphenolic composition of grape stems
Original language description
This study is focused on the study of polyphenolic compounds in grape stems as by-product of winemaking industry. Two white varieties of Grüner Veltliner and Sauvignon and two red varieties of Blauer Portugieser and Cabernet Moravia were selected for the study. Antioxidant activity, concentration of total polyphenols and concentration of individual phenolic compounds were determined. The results show a higher concentration of polyphenols and higher values of antioxidant activity in red varieties. The Blauer Portugieser variety contained the highest concentrations of syringic acid 1.346 mg.L-1, caffeic acid 20 mg.L-1, ferulic acid 1.192 mg.L-1, coumaric acid 3.231 mg.L-1, trans-resveratrol 14.195 mg.L-1, catechin 79.314 mg.L-1 and epicatechin 33.205 mg.L-1. Cabernet Moravia contained the highest concentration of protocatechuic acid 1.201 mg.L-1, the Sauvignon variety reached the highest concentration of gallic acid 4.015 mg.L-1 and hydroxybenzoic acid 0.076 mg.L-1. The highest values of alpha-amino acids were determined in the Blauer Portugieser variety 165.3 mg L-1 and the lowest in the Grüner Veltliner variety 33.3 mg L-1. The highest concentration of ammonia nitrogen was 214 mg L-1 for the Blauer Portugieser variety and the lowest concentration of ammonia nitrogen was measured in Cabernet Moravia 35.7 mg L-1.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
40105 - Horticulture, viticulture
Result continuities
Project
<a href="/en/project/EF16_017%2F0002334" target="_blank" >EF16_017/0002334: Research Infrastructure for Young Scientists</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>S - Specificky vyzkum na vysokych skolach
Others
Publication year
2020
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Notulae Botanicae Horti Agrobotanici Cluj-Napoca
ISSN
0255-965X
e-ISSN
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Volume of the periodical
48
Issue of the periodical within the volume
3
Country of publishing house
RO - ROMANIA
Number of pages
17
Pages from-to
1543-1559
UT code for WoS article
000579744100035
EID of the result in the Scopus database
2-s2.0-85096578844