Effect of supercritical CO2 drying process conditions on starch aerogel properties
Apstrakt
Starch is an abundant and low-cost polysaccharide obtained from renewable resources. Biocompatibility, biodegradability, and versatility of starch enable its application in several industries including food and pharmaceutical.
In this work, supercritical CO2 drying process was tested for preparation of stable and porous starch-based material. First, a hydrogel was formed from an aqueous solution (cornstarch to water mass ratio 1:10) at 95 °C. Subsequently, water was replaced with acetone during several days to form an acetogel. Finally, acetogels were subjected to supercritical CO2 drying at pressures of 8, 10, 20 MPa and temperatures of 35 and 45 °C up to 3 h to form aerogels. Obtained aerogels were compared with starch xerogels prepared by air drying of acetogels.
The SEM, FTIR, and porosity analysis confirmed significant effect of supercritical CO2 drying process conditions on starch aerogels properties and their suitability to form nanostructured matrices. SEM analysis showed tha...t aerogels were filamentous with filament diameter less than 100 nm. Due to their low density (0.273-0.773 g/cm3) and high porosity (48-82%) obtained starch aerogels present promising candidates as matrices and carriers for bioactive substances.
Izvor:
18th European Meeting of Supercritical fluids (EMSF), 3-6 May 2021, Bordeaux, France, 2021Finansiranje / projekti:
- Ministarstvo nauke, tehnološkog razvoja i inovacija Republike Srbije, institucionalno finansiranje - 200135 (Univerzitet u Beogradu, Tehnološko-metalurški fakultet) (RS-MESTD-inst-2020-200135)
- EUREKA Programme (Network Projects ID E!12689)
- COST-Action "Advanced Engineering of aeroGels for Environment and Life Sciences" (AERoGELS, ref. CA18125) funded by the European Commission
Kolekcije
Institucija/grupa
Tehnološko-metalurški fakultetTY - CONF AU - Milovanović, Stoja AU - Lukić, Ivana AU - Pajnik, Jelena AU - Maksimović, Svetolik PY - 2021 UR - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/6895 AB - Starch is an abundant and low-cost polysaccharide obtained from renewable resources. Biocompatibility, biodegradability, and versatility of starch enable its application in several industries including food and pharmaceutical. In this work, supercritical CO2 drying process was tested for preparation of stable and porous starch-based material. First, a hydrogel was formed from an aqueous solution (cornstarch to water mass ratio 1:10) at 95 °C. Subsequently, water was replaced with acetone during several days to form an acetogel. Finally, acetogels were subjected to supercritical CO2 drying at pressures of 8, 10, 20 MPa and temperatures of 35 and 45 °C up to 3 h to form aerogels. Obtained aerogels were compared with starch xerogels prepared by air drying of acetogels. The SEM, FTIR, and porosity analysis confirmed significant effect of supercritical CO2 drying process conditions on starch aerogels properties and their suitability to form nanostructured matrices. SEM analysis showed that aerogels were filamentous with filament diameter less than 100 nm. Due to their low density (0.273-0.773 g/cm3) and high porosity (48-82%) obtained starch aerogels present promising candidates as matrices and carriers for bioactive substances. C3 - 18th European Meeting of Supercritical fluids (EMSF), 3-6 May 2021, Bordeaux, France T1 - Effect of supercritical CO2 drying process conditions on starch aerogel properties UR - https://hdl.handle.net/21.15107/rcub_technorep_6895 ER -
@conference{ author = "Milovanović, Stoja and Lukić, Ivana and Pajnik, Jelena and Maksimović, Svetolik", year = "2021", abstract = "Starch is an abundant and low-cost polysaccharide obtained from renewable resources. Biocompatibility, biodegradability, and versatility of starch enable its application in several industries including food and pharmaceutical. In this work, supercritical CO2 drying process was tested for preparation of stable and porous starch-based material. First, a hydrogel was formed from an aqueous solution (cornstarch to water mass ratio 1:10) at 95 °C. Subsequently, water was replaced with acetone during several days to form an acetogel. Finally, acetogels were subjected to supercritical CO2 drying at pressures of 8, 10, 20 MPa and temperatures of 35 and 45 °C up to 3 h to form aerogels. Obtained aerogels were compared with starch xerogels prepared by air drying of acetogels. The SEM, FTIR, and porosity analysis confirmed significant effect of supercritical CO2 drying process conditions on starch aerogels properties and their suitability to form nanostructured matrices. SEM analysis showed that aerogels were filamentous with filament diameter less than 100 nm. Due to their low density (0.273-0.773 g/cm3) and high porosity (48-82%) obtained starch aerogels present promising candidates as matrices and carriers for bioactive substances.", journal = "18th European Meeting of Supercritical fluids (EMSF), 3-6 May 2021, Bordeaux, France", title = "Effect of supercritical CO2 drying process conditions on starch aerogel properties", url = "https://hdl.handle.net/21.15107/rcub_technorep_6895" }
Milovanović, S., Lukić, I., Pajnik, J.,& Maksimović, S.. (2021). Effect of supercritical CO2 drying process conditions on starch aerogel properties. in 18th European Meeting of Supercritical fluids (EMSF), 3-6 May 2021, Bordeaux, France. https://hdl.handle.net/21.15107/rcub_technorep_6895
Milovanović S, Lukić I, Pajnik J, Maksimović S. Effect of supercritical CO2 drying process conditions on starch aerogel properties. in 18th European Meeting of Supercritical fluids (EMSF), 3-6 May 2021, Bordeaux, France. 2021;. https://hdl.handle.net/21.15107/rcub_technorep_6895 .
Milovanović, Stoja, Lukić, Ivana, Pajnik, Jelena, Maksimović, Svetolik, "Effect of supercritical CO2 drying process conditions on starch aerogel properties" in 18th European Meeting of Supercritical fluids (EMSF), 3-6 May 2021, Bordeaux, France (2021), https://hdl.handle.net/21.15107/rcub_technorep_6895 .