Ultrasound-Assisted Extraction of Blackberry Seed Oil: Optimization and Oil Characterization
Petronela L. Matei,
Iuliana Deleanu,
Ana M. Brezoiu,
Nicoleta A. Chira,
Cristina Busuioc,
Gabriela Isopencu,
Mihaela Cîlțea-Udrescu,
Elvira Alexandrescu,
Anicuta Stoica-Guzun
Affiliations
Petronela L. Matei
Department of Chemical and Biochemical Engineering, Faculty of Chemical Engineering and Biotechnologies, University “Politehnica” of Bucharest, 1-7 Polizu Street, 011061 Bucharest, Romania
Iuliana Deleanu
Department of Chemical and Biochemical Engineering, Faculty of Chemical Engineering and Biotechnologies, University “Politehnica” of Bucharest, 1-7 Polizu Street, 011061 Bucharest, Romania
Ana M. Brezoiu
Department of Chemical and Biochemical Engineering, Faculty of Chemical Engineering and Biotechnologies, University “Politehnica” of Bucharest, 1-7 Polizu Street, 011061 Bucharest, Romania
Nicoleta A. Chira
Department of Organic Chemistry “Costin Neniţescu”, Faculty of Chemical Engineering and Biotechnologies, University “Politehnica” of Bucharest, 1-7 Polizu Street, 011061 Bucharest, Romania
Cristina Busuioc
Department of Science and Engineering of Oxide Materials and Nanomaterials, Faculty of Chemical Engineering and Biotechnologies, University “Politehnica” of Bucharest, 1-7 Polizu Street, 011061 Bucharest, Romania
Gabriela Isopencu
Department of Chemical and Biochemical Engineering, Faculty of Chemical Engineering and Biotechnologies, University “Politehnica” of Bucharest, 1-7 Polizu Street, 011061 Bucharest, Romania
Mihaela Cîlțea-Udrescu
Department of Biotechnologies, Bioresources and Bioproducts for Bioeconomy, National Institute for Research and Development in Chemistry and Petrochemistry-ICECHIM, 202 Splaiul Independentei Street, 060021 Bucharest, Romania
Elvira Alexandrescu
Department of Heterogeneous Systems, National Institute for Research and Development in Chemistry and Petrochemistry-ICECHIM, 202 Splaiul Independentei Street, 060021 Bucharest, Romania
Anicuta Stoica-Guzun
Department of Chemical and Biochemical Engineering, Faculty of Chemical Engineering and Biotechnologies, University “Politehnica” of Bucharest, 1-7 Polizu Street, 011061 Bucharest, Romania
Ultrasound-assisted extraction (UAE) was applied to extract oil from blackberry (BB) seeds. The effect of UAE conditions on oil recovery and quality was investigated. Favorable experimental conditions (ultrasound intensity (UI), extraction temperature, and time) were investigated using response surface methodology (RSM). A Box–Behnken design was used to predict optimized conditions for BB seed oil extraction. These conditions were as follows: 13.77 W/cm2 UI, 45 °C extraction temperature, and 15 min extraction time. The experimental value obtained for extraction efficiency under optimal conditions was 87 ± 0.34%, in good agreement with the optimized predicted value. UAE does not affect the oil composition and confers higher antioxidant values in BB seed oil in comparison with Soxhlet extraction.
