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The impact of novel extraction techniques on the polyphenol profile of grape pomace (CROSBI ID 667889)

Prilog sa skupa u zborniku | sažetak izlaganja sa skupa

Lončarić, Ante ; Jozinović, Antun ; Jozinović Lešić, Antonija ; Kojić, Nebojša ; Šubarić, Drago The impact of novel extraction techniques on the polyphenol profile of grape pomace // Abstract of the 11th International Scientific and Professional Conference / Jerković, Igor ; Šubarić, Drago ; Jašić, Midhat (ur.). Split : Osijek : Tuzla, 2018. str. 110-110

Podaci o odgovornosti

Lončarić, Ante ; Jozinović, Antun ; Jozinović Lešić, Antonija ; Kojić, Nebojša ; Šubarić, Drago

engleski

The impact of novel extraction techniques on the polyphenol profile of grape pomace

The impact of cold atmospheric plasma (CAP) and ultrasound (US) assisted extraction on gallic acid, p-coumaric acid, catechin, epicatechin and quercitin from dried grape pomace was investigated. The solvents used for the extraction were aqueous solution of ethanol or methanol, acidified with hydrochloric acid (49.5:49.5:1). The investigated parameters in case of CAP were tretment time (5, 10, 15 min) and frequency (20, 50, 100 Hz), and in the case of US, treatment time (5, 10, 15 min) and temperature (20, 40, 80°C). The results showed that in both cases the better extraction solvent was ethanol acidified with hydrochloric acid. The highest yields in extracts obtained by CAP assisted extraction have been achieved by extracting polyphenols at 100 Hz for 15 min. The contents of gallic acid, p-coumaric acid, caffeic acid, catechin, epicatechin and quercetin were 4.21 ; 6.80 ; 54.09 ; 53.68 ; 53.19 ; 45.31 mg/100g DW, respectively. In extracts obtained by US assisted extraction, the highest content of investigated polyphenols have been achieved by extracting polyphenols at 80 °C for 15 min. The contents of gallic acid, p-coumaric acid, caffeic acid, catechin, epicatechin and quercetin were 2.32 ; 5.87 ; 36.19 ; 40.25 ; 23.02 ; 24.97 mg/100g DW, respectively. Contents of all investigated polyphenols were higher in extracts obtained by CAP assisted extraction.

cold plasma, ultrasound, grape pomace, polyphenol profile

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Podaci o prilogu

110-110.

2018.

nije evidentirano

objavljeno

978-953-7005-58-0

Podaci o matičnoj publikaciji

Abstract of the 11th International Scientific and Professional Conference

Jerković, Igor ; Šubarić, Drago ; Jašić, Midhat

Split : Osijek : Tuzla:

2232-9536

Podaci o skupu

11th International Scientific and Professional Conference „With food to health“ = 11. međunarodni znanstveno-stručni skup Hranom do zdravlja

poster

18.10.2018-19.10.2018

Split, Hrvatska

Povezanost rada

Prehrambena tehnologija