Supercritical CO2-assisted processes for development of added-value materials: Optimization of starch aerogels preparation and hemp seed extracts impregnation
Abstract
The aim of the present study was the utilization of supercritical CO2 as a green medium in various processes: starch gel drying, supercritical extraction from hemp seed flour (SCE process), hemp seed oil (HSO) impregnation (SCI process), as well as integrated process of hemp seed flour (HSF) extraction and starch gels impregnation (SCE-SCI process) for development of added-value materials that can be used as phytopharmaceuticals. Optimization of starch aerogels was performed by variation of temperature (35 and 45 °C) and pressure (8, 10, and 20 MPa) in order to obtain materials with high porosity, which will enable maximal loading capacity for hemp seed extracts. Proposed scCO2-assisted processes of SCE from HSF, SCI and SCE-SCI were performed at pressure of 30 MPa and temperature of 60 °C. It was shown that conditions of starch gel drying significantly influenced material morphology (porosity was in a range of 48-82%, and specific surface area of 71-208 m2/g), which consequently deter...mined aerogel loading capacity. FTIR analysis confirmed that scCO2 did not have effect on polymer composition nor it remained in polymer after drying process. The highest loading of both HSO and HSF extract (24.9% and 29.78%, respectively) was achieved when aerogel obtained at 10 MPa and 45 °C was tested as a carrier. Furthermore, chemical analysis showed that both HSO and HSF extract are rich in unsaturated fatty acids especially linoleic acid (54-59%) and α-linolenic acid (15-18%). These essential fatty acids have well-established health benefits including protection against cardiovascular, neurodegenerative and inflammatory diseases.
Keywords:
Aerogel / Hemp seed / Starch / Supercritical carbon dioxide / Supercritical CO2impregnation / Supercritical fluid extractionSource:
Journal of CO2 Utilization, 2022, 61, 102036-Publisher:
- Elsevier Ltd
Funding / projects:
- Ministry of Education, Science and Technological Development, Republic of Serbia, Grant no. 200135 (University of Belgrade, Faculty of Technology and Metallurgy) (RS-200135)
- Ministry of Education, Science and Technological Development, Republic of Serbia, Grant no. 200287 (Innovation Center of the Faculty of Technology and Metallurgy) (RS-200287)
DOI: 10.1016/j.jcou.2022.102036
ISSN: 2212-9820
WoS: 00079807120000
Scopus: 2-s2.0-85130270288
Collections
Institution/Community
Tehnološko-metalurški fakultetTY - JOUR AU - Lukic, Ivana AU - Pajnik, Jelena AU - Tadic, Vanja AU - Milovanovic, Stoja PY - 2022 UR - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/5146 AB - The aim of the present study was the utilization of supercritical CO2 as a green medium in various processes: starch gel drying, supercritical extraction from hemp seed flour (SCE process), hemp seed oil (HSO) impregnation (SCI process), as well as integrated process of hemp seed flour (HSF) extraction and starch gels impregnation (SCE-SCI process) for development of added-value materials that can be used as phytopharmaceuticals. Optimization of starch aerogels was performed by variation of temperature (35 and 45 °C) and pressure (8, 10, and 20 MPa) in order to obtain materials with high porosity, which will enable maximal loading capacity for hemp seed extracts. Proposed scCO2-assisted processes of SCE from HSF, SCI and SCE-SCI were performed at pressure of 30 MPa and temperature of 60 °C. It was shown that conditions of starch gel drying significantly influenced material morphology (porosity was in a range of 48-82%, and specific surface area of 71-208 m2/g), which consequently determined aerogel loading capacity. FTIR analysis confirmed that scCO2 did not have effect on polymer composition nor it remained in polymer after drying process. The highest loading of both HSO and HSF extract (24.9% and 29.78%, respectively) was achieved when aerogel obtained at 10 MPa and 45 °C was tested as a carrier. Furthermore, chemical analysis showed that both HSO and HSF extract are rich in unsaturated fatty acids especially linoleic acid (54-59%) and α-linolenic acid (15-18%). These essential fatty acids have well-established health benefits including protection against cardiovascular, neurodegenerative and inflammatory diseases. PB - Elsevier Ltd T2 - Journal of CO2 Utilization T1 - Supercritical CO2-assisted processes for development of added-value materials: Optimization of starch aerogels preparation and hemp seed extracts impregnation SP - 102036 VL - 61 DO - 10.1016/j.jcou.2022.102036 ER -
@article{ author = "Lukic, Ivana and Pajnik, Jelena and Tadic, Vanja and Milovanovic, Stoja", year = "2022", abstract = "The aim of the present study was the utilization of supercritical CO2 as a green medium in various processes: starch gel drying, supercritical extraction from hemp seed flour (SCE process), hemp seed oil (HSO) impregnation (SCI process), as well as integrated process of hemp seed flour (HSF) extraction and starch gels impregnation (SCE-SCI process) for development of added-value materials that can be used as phytopharmaceuticals. Optimization of starch aerogels was performed by variation of temperature (35 and 45 °C) and pressure (8, 10, and 20 MPa) in order to obtain materials with high porosity, which will enable maximal loading capacity for hemp seed extracts. Proposed scCO2-assisted processes of SCE from HSF, SCI and SCE-SCI were performed at pressure of 30 MPa and temperature of 60 °C. It was shown that conditions of starch gel drying significantly influenced material morphology (porosity was in a range of 48-82%, and specific surface area of 71-208 m2/g), which consequently determined aerogel loading capacity. FTIR analysis confirmed that scCO2 did not have effect on polymer composition nor it remained in polymer after drying process. The highest loading of both HSO and HSF extract (24.9% and 29.78%, respectively) was achieved when aerogel obtained at 10 MPa and 45 °C was tested as a carrier. Furthermore, chemical analysis showed that both HSO and HSF extract are rich in unsaturated fatty acids especially linoleic acid (54-59%) and α-linolenic acid (15-18%). These essential fatty acids have well-established health benefits including protection against cardiovascular, neurodegenerative and inflammatory diseases.", publisher = "Elsevier Ltd", journal = "Journal of CO2 Utilization", title = "Supercritical CO2-assisted processes for development of added-value materials: Optimization of starch aerogels preparation and hemp seed extracts impregnation", pages = "102036", volume = "61", doi = "10.1016/j.jcou.2022.102036" }
Lukic, I., Pajnik, J., Tadic, V.,& Milovanovic, S.. (2022). Supercritical CO2-assisted processes for development of added-value materials: Optimization of starch aerogels preparation and hemp seed extracts impregnation. in Journal of CO2 Utilization Elsevier Ltd., 61, 102036. https://doi.org/10.1016/j.jcou.2022.102036
Lukic I, Pajnik J, Tadic V, Milovanovic S. Supercritical CO2-assisted processes for development of added-value materials: Optimization of starch aerogels preparation and hemp seed extracts impregnation. in Journal of CO2 Utilization. 2022;61:102036. doi:10.1016/j.jcou.2022.102036 .
Lukic, Ivana, Pajnik, Jelena, Tadic, Vanja, Milovanovic, Stoja, "Supercritical CO2-assisted processes for development of added-value materials: Optimization of starch aerogels preparation and hemp seed extracts impregnation" in Journal of CO2 Utilization, 61 (2022):102036, https://doi.org/10.1016/j.jcou.2022.102036 . .