Combining high-pressure methods for extraction of stilbenes from grape cane

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F62156489%3A43510%2F18%3A43914330" target="_blank" >RIV/62156489:43510/18:43914330 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/67985858:_____/18:00495143 RIV/86652079:_____/18:00495143

Výsledek na webu

<a href="https://doi.org/10.1016/j.supflu.2018.05.021" target="_blank" >https://doi.org/10.1016/j.supflu.2018.05.021</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.supflu.2018.05.021" target="_blank" >10.1016/j.supflu.2018.05.021</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Combining high-pressure methods for extraction of stilbenes from grape cane

Popis výsledku v původním jazyce

Stilbenes were extracted from grape cane using supercritical fluid extraction and pressurized liquid extraction, and the extracts were analysed by HPLC. The results of the high-pressure experiments were compared with ethanolic Soxhlet extraction, which yielded 2.31 mg/g dw trans-resveratrol, 1.56 mg/g dw trans-epsilon-viniferin, and 0.69 mg/g dw r2-viniferin. In contrast to resveratrol, the extraction of viniferins with supercritical CO2 required a high concentration of ethanol as co-solvent. Its increase from 15 to 20% at 30 MPa and 50 degrees C increased the rate of extraction of trans-epsilon-viniferin and r2-viniferin 4 times and 7 times, resp. The optimal conditions of pressurized liquid extraction were: ethanol as solvent, pressure 10 MPa, and temperature 100 degrees C for resveratrol and 80 degrees C for viniferins. The selectivity of supercritical fluid extraction and efficiency of extraction with pressurised ethanol were combined to obtain extracts of different mutual ratios of stilbenes.

Název v anglickém jazyce

Combining high-pressure methods for extraction of stilbenes from grape cane

Popis výsledku anglicky

Stilbenes were extracted from grape cane using supercritical fluid extraction and pressurized liquid extraction, and the extracts were analysed by HPLC. The results of the high-pressure experiments were compared with ethanolic Soxhlet extraction, which yielded 2.31 mg/g dw trans-resveratrol, 1.56 mg/g dw trans-epsilon-viniferin, and 0.69 mg/g dw r2-viniferin. In contrast to resveratrol, the extraction of viniferins with supercritical CO2 required a high concentration of ethanol as co-solvent. Its increase from 15 to 20% at 30 MPa and 50 degrees C increased the rate of extraction of trans-epsilon-viniferin and r2-viniferin 4 times and 7 times, resp. The optimal conditions of pressurized liquid extraction were: ethanol as solvent, pressure 10 MPa, and temperature 100 degrees C for resveratrol and 80 degrees C for viniferins. The selectivity of supercritical fluid extraction and efficiency of extraction with pressurised ethanol were combined to obtain extracts of different mutual ratios of stilbenes.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

20402 - Chemical process engineering

Projekt

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2018

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Journal of Supercritical Fluids

ISSN

0896-8446

e-ISSN

—

Svazek periodika

142

Číslo periodika v rámci svazku

December

Stát vydavatele periodika

NL - Nizozemsko

Počet stran výsledku

7

Strana od-do

38-44

Kód UT WoS článku

000449896200005

EID výsledku v databázi Scopus

2-s2.0-85047845682