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Pregled bibliografske jedinice broj: 896546

Electrotechnologies, microwaves, and ultrasounds combined with binary mixtures of ethanol and water to extract steviol glycosides and antioxidant compounds from Stevia rebaudiana leaves


Carbonell-Capella M., Juana; Šic Žlabur, Jana; Rimac Brnčić, Suzana; Barba J., Francisco; Grimi, Nabil; Koubaa, Mohamed; Brnčić, Mladen; Vorobiev, Eugène
Electrotechnologies, microwaves, and ultrasounds combined with binary mixtures of ethanol and water to extract steviol glycosides and antioxidant compounds from Stevia rebaudiana leaves // Journal of Food Processing and Preservation (2017) (znanstveni, prihvaćen)


Naslov
Electrotechnologies, microwaves, and ultrasounds combined with binary mixtures of ethanol and water to extract steviol glycosides and antioxidant compounds from Stevia rebaudiana leaves

Autori
Carbonell-Capella M., Juana ; Šic Žlabur, Jana ; Rimac Brnčić, Suzana ; Barba J., Francisco ; Grimi, Nabil ; Koubaa, Mohamed ; Brnčić, Mladen ; Vorobiev, Eugène

Vrsta, podvrsta
Radovi u časopisima, znanstveni

Izvornik
Journal of Food Processing and Preservation (2017)

Status rada
Prihvaćen

Ključne riječi
High voltage electrical discharges, microwaves, pulsed electric fields, Stevia rebaudiana Bertoni, ultrasounds

Sažetak
The aim of this work was to investigate the potential use of non-conventional technologies (microwaves, ultrasounds, pulsed electric fields, and high voltage electrical discharges) to enhance the extraction of high-added value compounds (mainly stevioside and rebaudioside A), and antioxidants (total phenolic compounds, flavonoids, chlorophylls, and carotenoids), from Stevia rebaudiana leaves. After treatment at equivalent energy, a supplementary diffusion was performed until 1 h. Results demonstrated that when water (100%) was used as solvent, the maximum recovery of stevioside (50.8 ± 0.1 mg/g) was obtained after ultrasound-assisted extraction, while microwave allowed the highest yields of rebaudioside A (22.7 ± 0.1 mg/g). However, pulsed electric field technology was the most efficient to recover stevioside (44.2 ± 0.1 mg/g) and rebaudioside A (22.4 ± 0.3 mg/g) when using 50% ethanol-water. Results obtained through this work pave the way toward the possible scaling-up of some of these non- conventional technologies for a multistep selective extraction of valuable compounds from Stevia leaves.

Izvorni jezik
Engleski