Dobozi Réka; Jákói Zoltán; Keszthelyi Krisztina; Beszédes Sándor: Microwave and ultrasound-assisted extraction of monomeric anthocyanin pigment content from plant residuals.
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Our investigation focused on the intensification of monomeric anthocyanin pigment content (MAC) extraction from raspberry residuals by using microwave (MW) and ultrasound (US) radiation with different solvents, and to monitor the efficacy of these processes by the assessment of the dielectric behavior of the extracts. All the experiments were carried out with using 5 grams of the raspberry raw material mixed with 100 cm3 of three different solvents – distilled water, hydrochloric acid, and the mixture of HCl and citric acid – separately. For the intensification processes, microwave and ultrasonic radiation were used in three different total irradiated energy input values: 30 kJ, 45 kJ and 60 kJ. The MAC content was analyzed according to the AOAC official method for total monomeric anthocyanin pigment content, while the dielectric behavior of the extracts was analyzed with laboratory dielectric assessment kit. Our results revealed that using MW irradiation as an intensifying process for extraction can be effectively used in the lower irradiated energy range (30 kJ), and the higher level of power (500W) is more efficient, regardless of the applied solvent. If, however, ultrasonic radiation is being used, usually the higher the energy intensity, the higher the yield of MAC can be observed. The assessment of dielectric behavior proved that a strong correlation (r=0.98-0.99) can be found between the dielectric constant (ε’) and the MAC concentration of the extracts, regardless of the intensifying method and solvent used.
| Mű típusa: | Konferencia vagy workshop anyag |
|---|---|
| Befoglaló folyóirat/kiadvány címe: | Proceedings of the International Symposium on Analytical and Environmental Problems |
| Dátum: | 2023 |
| Kötet: | 29 |
| ISBN: | 978-963-306-963-9 |
| Oldalak: | pp. 136-140 |
| Nyelv: | angol |
| Kiadó: | University of Szeged |
| Kiadás helye: | Szeged |
| Konferencia neve: | 29th International Symposium on Analytical and Environmental Problems |
| Konferencia típusa: | Konferencia |
| Helyszin: | Szeged |
| Dátum: | 2023. november 13-14. |
| Befoglaló mű URL: | https://acta.bibl.u-szeged.hu/82256/ |
| Kulcsszavak: | Extrakció, Vegyipari műveletek, Analitikai kémia |
| Megjegyzések: | Bibliogr.: 140. p. ; ill. ; összefoglalás angol nyelven |
| Szakterület: | 01. Természettudományok 01. Természettudományok > 01.04. Kémiai tudományok |
| Feltöltés dátuma: | 2023. nov. 22. 13:19 |
| Utolsó módosítás: | 2023. nov. 22. 13:19 |
| URI: | http://acta.bibl.u-szeged.hu/id/eprint/82395 |
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