Naslov
Influence of different vinification techniques on stilbenes and total polyphenolic content in Teran wines

Autori
Rossi, Sara ; Radeka, Sanja ; Bubola, Marijan ; Plavša, Tomislav ; Horvat, Ivana ; Lukić, Igor ; Jagatić Korenika, Ana-Marija

Vrsta, podvrsta i kategorija rada
Radovi u zbornicima skupova, cjeloviti rad (in extenso), znanstveni

Izvornik
SA 2020, 55th Croatian and 15th International Symposium on Agriculture, Proceedings / Mioč B., Širić I. - Zagreb, 2020, 496-500

Skup
55. hrvatski i 15. međunarodni simpozij agronoma

Mjesto i datum
Vodice, Hrvatska, 16.02.2020. - 21.02.2020

Vrsta sudjelovanja
Predavanje

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
extended maceration, thermovinification, polyphenols, resveratrol, piceid

Sažetak
The aim of this work was to study the influence of different vinification techniques on stilbenes and total polyphenolic content in red wines made from cv. Teran (Vitis vinifera L.). Four different vinification techniques were carried out: control (7 days maceration), prolonged maceration (10 and 21 days), and thermovinification. Four stilbenes were determined by high-performance liquid chromatography (HPLC), and total polyphenols were determined by spectrophotometric methods. The results showed the treatment of extended maceration (21 days) had a significant effect on the increase of total (35.74 mg/L) and individual stilbenes (trans-piceid, cis-piceid, trans-piceatannol, trans-resveratrol), as well as total polyphenols (2702.88 mg GAE/L). Treatment of thermovinification resulted in significant increase of the total polyphenolic content by nearly 20% in relation to control.

Izvorni jezik
Engleski

Znanstvena područja
Poljoprivreda (agronomija), Interdisciplinarne biotehničke znanosti

POVEZANOST RADA