Preparation of Chlorophyll-free Young Barley Leaf Extract Powders Using Supercritical Carbon Dioxide Modified with Cosolvent
| Autor: | Jin Hee Hong, Jong Hoon Ryu, Heaung Shig Oh, Gio-Bin Lim, Seungjoo Haam |
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| Rok vydání: | 2019 |
| Předmět: |
0106 biological sciences
0303 health sciences Antioxidant Supercritical carbon dioxide Aqueous solution Saponarin medicine.medical_treatment Isovitexin Biomedical Engineering Bioengineering 01 natural sciences Applied Microbiology and Biotechnology 03 medical and health sciences chemistry.chemical_compound chemistry 010608 biotechnology Chlorophyll medicine Industrial and production engineering Water content 030304 developmental biology Biotechnology Nuclear chemistry |
| Zdroj: | Biotechnology and Bioprocess Engineering. 24:997-1006 |
| ISSN: | 1976-3816 1226-8372 |
| DOI: | 10.1007/s12257-019-0236-x |
| Popis: | In this study, we attempted to prepare chlorophyll-free young barley leaf extract powders using three different supercritical carbon dioxide (SCCO2) drying processes. The pure SCCO2 drying process for a methanolic extract solution resulted in a ~30% increase in the antioxidant (saponarin and isovitexin) content and a ~75% decrease in the chlorophyll content compared to a solvent evaporation method. The drying process with ethanol-modified SCCO2 increased the antioxidant content considerably and completely removed the chlorophylls. However, this process could not dry an aqueous ethanolic extract solution with a more than 30% water content. The ethanol-modified SCCO2 drying process that employed a periodic flush with pure SCCO2 was found to effectively dry an aqueous ethanolic extract solution with more than 30% water content. |
| Databáze: | OpenAIRE |
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