Iranian Research Organization for Science and Technology (IROST) Innovative Food Technologies 2783-350X 4 4 2017 06 22 Optimization of the extraction of curcumin from turmeric (Curcuma longa L.) using carbamate ionic liquid as green solvent Optimization of the extraction of curcumin from turmeric (Curcuma longa L.) using carbamate ionic liquid as green solvent 1 12 452 10.22104/jift.2017.452 FA Foozie Sahne Ph.D Candidate, Biotechnology Research Group, Department of Chemical Engineering, Babol Noshirvani University of Technology Maedeh Mohammadi Assistant Professor, Biotechnology Research Group, Department of Chemical Engineering, Babol Noshirvani University of Technology Ghasem D. Najafpour Professor, Biotechnology Research Group, Department of Chemical Engineering, Babol Noshirvani University of Technology Ali Akbar Moghadamnia Professor, Department of Pharmacology, Faculty of Medicine, Babol University of Medical Science Journal Article 2016 12 24 Emerging new technologies have attracted considerable interest for extraction of bioactive compounds from medicinal plants. Carbamate ionic liquids have shown great solubility towards organic compounds; they are considered as green solvents for extraction of bioactive compounds. In this study, N, N-dipropyl ammonium N′, N′-dipropylcarbamate (DPCARB) and N, N-diethyl ammonium N′, N′-diethycarbamate (DECARB) were synthesized using solid carbon dioxide and a secondary amine which were dipropyl amine and diethyl amine, respectively. The synthesized carbamate ionic liquids were used for the extraction of curcumin from turmeric. Curcumin extraction yield was investigated at different extraction temperatures (15, 25, 35, 45 °C) and times (1, 3, 6 and 8 h). Results showed that the maximum curcumin extraction yields were 3.86 and 3.18%, obtained using the synthesized DPCARB and DECARB at 25 °C and 3 h, respectively. Also, the purity of the extracted curcumin using DPCARB was 85%, as determined by HPLC analysis. Results showed that the carbamate ionic liquids resulted in high extraction yield at room temperature and relatively short extraction time. The high purity of the extracted curcumin verifies the high selectivity of carbamate ionic liquids toward curcumin compared to other organic compounds available in the turmeric structure. Emerging new technologies have attracted considerable interest for extraction of bioactive compounds from medicinal plants. Carbamate ionic liquids have shown great solubility towards organic compounds; they are considered as green solvents for extraction of bioactive compounds. In this study, N, N-dipropyl ammonium N′, N′-dipropylcarbamate (DPCARB) and N, N-diethyl ammonium N′, N′-diethycarbamate (DECARB) were synthesized using solid carbon dioxide and a secondary amine which were dipropyl amine and diethyl amine, respectively. The synthesized carbamate ionic liquids were used for the extraction of curcumin from turmeric. Curcumin extraction yield was investigated at different extraction temperatures (15, 25, 35, 45 °C) and times (1, 3, 6 and 8 h). Results showed that the maximum curcumin extraction yields were 3.86 and 3.18%, obtained using the synthesized DPCARB and DECARB at 25 °C and 3 h, respectively. Also, the purity of the extracted curcumin using DPCARB was 85%, as determined by HPLC analysis. Results showed that the carbamate ionic liquids resulted in high extraction yield at room temperature and relatively short extraction time. The high purity of the extracted curcumin verifies the high selectivity of carbamate ionic liquids toward curcumin compared to other organic compounds available in the turmeric structure. https://jift.irost.ir/article_452_9431c87f273e507e6040fcb07dcb4509.pdf