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

Result code in 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>
Alternative codes found
RIV/67985858:_____/18:00495143 RIV/86652079:_____/18:00495143
Result on the web
<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>

Result language
angličtina
Original language name
Combining high-pressure methods for extraction of stilbenes from grape cane
Original language description
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.
Czech name
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Czech description
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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
20402 - Chemical process engineering

Project
Result was created during the realization of more than one project. More information in the Projects tab.
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year
2018
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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