Extraction of steviol glycosides from dried Stevia rebaudiana by pressurized hot water extraction
| Autor: | Sz. Jánosi, Áron Németh |
|---|---|
| Rok vydání: | 2019 |
| Předmět: |
0303 health sciences
Chromatography 030309 nutrition & dietetics Extraction (chemistry) Steviol 04 agricultural and veterinary sciences 040401 food science Hot water extraction 03 medical and health sciences chemistry.chemical_compound Stevia rebaudiana 0404 agricultural biotechnology chemistry Spray drying Response surface methodology Stevioside Rebaudioside A Food Science |
| Zdroj: | Acta Alimentaria. 48:241-252 |
| ISSN: | 1588-2535 0139-3006 |
| DOI: | 10.1556/066.2019.48.2.12 |
| Popis: | In existing processes, the extraction of steviol glycosides from stevia leaves involves many process steps often including extraction by organic solvents. The purpose of the present study was to develop a process for the effective extraction of steviol glycosides, which can provide a concentrated juice exhibiting a high level of recovery with regard to the target compounds, rebaudioside A and stevioside. Pressurized Hot Water Extraction (PHWE) was first optimized with Response Surface Methodology in terms of maximized rebaudioside-A yield and minimized colour components. PHWE was then combined with pressing in a wine-press, resulting higher efficiency for extracting both steviol glycosides in comparison to the reported methods in the literature. Finally, spray drying was applied for both product stabilization and removal of contaminants. |
| Databáze: | OpenAIRE |
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