Pilot-Scale Optimization of Supercritical CO2 Extraction of Dry Paprika Capsicum annuum: Influence of Operational Conditions and Storage on Extract Composition

Abstract

Supercritical carbon dioxide extraction was used to extract carotenoids from dry paprika Capsicum annuum. Studies regarding the effect of process parameters, including pressure (25–45 MPa), temperature (40–60 °C), and time (10–110 min), were carried out using response surface methodology. It was found that under optimal conditions (pressure of 45 MPa, temperature of 50 °C, and time of 74 min), the extract yield was 10.05%, and the total content of carotenoids in the extract was 4.21%, in good agreement with the predicted values (10.24% and 4.24%, respectively). Composition analysis showed that paprika extract mainly consisted of linoleic acid. There was no significant difference between the fatty acid content of the extracts obtained by SC-CO2 extraction and n-hexane Soxhlet extraction. For functional purposes, the effect of storage conditions and time on the quality of paprika extract was also specified.

Genetic Regulation, Environmental Cues, and Extraction Methods for Higher Yield of Secondary Metabolites in Capsicum

“…The negative effects of extrusion on the yield and quality of oleoresin prior to supercritical-CO 2 (SC-CO 2 ) extraction were studied, and it was concluded that irrespective of the pretreatments the maximum yield was obtained at extreme temperature and pressure conditions (60 °C and 50 MPa) and that the extractable color positively correlated with the antioxidant activity of the oleoresin extracts . Total 4.21% carotenoids were obtained from SFE at the optimum conditions of 45 MPa pressure and 50 °C temperature for 74 min form dry C. annuum powder . Although sophisticated instrumentation is required, SFE and PLE provide less oxidative atmosphere for the extracts; operate under low light, which is particularly helpful for pigments; and utilize up to 90% less solvent than other solvent extraction methods.…”

“…235 Total 4.21% carotenoids were obtained from SFE at the optimum conditions of 45 MPa pressure and 50 °C temperature for 74 min form dry C. annuum powder. 236 Although sophisticated instrumentation is required, SFE and PLE provide less oxidative atmosphere for the extracts; operate under low light, which is particularly helpful for pigments; and utilize up to 90% less solvent than other solvent extraction methods.…”

Preparation and Characterization of the Composition of Volatile Compounds, Fatty Acids and Thermal Behavior of Paprika

“…In addition, extraction methods influence the amounts of fatty acids. Combining solvent extraction, microwave irradiation, ultrasonic extraction and supercritical carbon dioxide techniques could significantly improve oil performance [11]. Kostrzewa et al (2022) used supercritical CO 2 extraction of dry paprika and n-hexane, and the results showed that there is no difference between the two extraction methods.…”

“…Kostrzewa et al (2022) used supercritical CO 2 extraction of dry paprika and n-hexane, and the results showed that there is no difference between the two extraction methods. [11]. Ultrasound-assisted extraction is a simple and ecologically safe method for the extraction of oil.…”