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

• Published in: Molecules (Basel, Switzerland) Vol. 27; no. 7; p. 2090
• Main Authors: Kostrzewa, Dorota, Dobrzyńska-Inger, Agnieszka, Mazurek, Barbara, Kostrzewa, Marcin
• Format: Journal Article
• Language: English
• Published: Basel MDPI AG 24.03.2022; MDPI
• Subjects: Capsicum annuum; Carbon dioxide; Carotenoids; Composition; Design of experiments; dry red paprika; Fatty acids; Hexanes; Linoleic acid; Moisture content; Optimization; Paprikas; Peppers; Process parameters; Response surface methodology; Solvent extraction processes; Storage conditions; supercritical carbon dioxide extraction; Supercritical gas extraction; Variables; Variance analysis; Poland; St Louis Missouri; United States > US; Switzerland
• ISSN: 1420-3049; 1420-3049
• DOI: 10.3390/molecules27072090

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.