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Optimization of microwave-assisted extraction of polyphenols from Myrtus communis L. leaves.
Food Chem. 2015 Jan 01; 166:585-595.FC

Abstract

Phytochemicals, such as phenolic compounds, are of great interest due to their health-benefitting antioxidant properties and possible protection against inflammation, cardiovascular diseases and certain types of cancer. Maximum retention of these phytochemicals during extraction requires optimised process parameter conditions. A microwave-assisted extraction (MAE) method was investigated for extraction of total phenolics from Myrtus communis leaves. The total phenolic capacity (TPC) of leaf extracts at optimised MAE conditions was compared with ultrasound-assisted extraction (UAE) and conventional solvent extraction (CSE). The influence of extraction parameters including ethanol concentration, microwave power, irradiation time and solvent-to-solid ratio on the extraction of TPC was modeled by using a second-order regression equation. The optimal MAE conditions were 42% ethanol concentration, 500 W microwave power, 62 s irradiation time and 32 mL/g solvent to material ratio. Ethanol concentration and liquid-to-solid ratio were the significant parameters for the extraction process (p<0.01). Under the MAE optimised conditions, the recovery of TPC was 162.49 ± 16.95 mg gallic acidequivalent/gdry weight(DW), approximating the predicted content (166.13 mg GAE/g DW). When bioactive phytochemicals extracted from Myrtus leaves using MAE compared with UAE and CSE, it was also observed that tannins (32.65 ± 0.01 mg/g), total flavonoids (5.02 ± 0.05 mg QE/g) and antioxidant activities (38.20 ± 1.08 μg GAE/mL) in MAE extracts were higher than the other two extracts. These findings further illustrate that extraction of bioactive phytochemicals from plant materials using MAE method consumes less extraction solvent and saves time.

Authors+Show Affiliations

Laboratory of Biomathematics, Biochemistry, Biophysics and Scientometrics, Abderrahmane Mira University of Bejaia, Bejaia 06000, Algeria.Food Science and Human Nutrition, School of Food and Agriculture, University of Maine, Orono, ME 04469, United States. Electronic address: balunkeswar.nayak@maine.edu.Laboratory of Biomathematics, Biochemistry, Biophysics and Scientometrics, Abderrahmane Mira University of Bejaia, Bejaia 06000, Algeria.Laboratory of Biomathematics, Biochemistry, Biophysics and Scientometrics, Abderrahmane Mira University of Bejaia, Bejaia 06000, Algeria.Laboratory of Biomathematics, Biochemistry, Biophysics and Scientometrics, Abderrahmane Mira University of Bejaia, Bejaia 06000, Algeria.

Pub Type(s)

Comparative Study
Journal Article

Language

eng

PubMed ID

25053097

Citation

Dahmoune, Farid, et al. "Optimization of Microwave-assisted Extraction of Polyphenols From Myrtus Communis L. Leaves." Food Chemistry, vol. 166, 2015, pp. 585-595.
Dahmoune F, Nayak B, Moussi K, et al. Optimization of microwave-assisted extraction of polyphenols from Myrtus communis L. leaves. Food Chem. 2015;166:585-595.
Dahmoune, F., Nayak, B., Moussi, K., Remini, H., & Madani, K. (2015). Optimization of microwave-assisted extraction of polyphenols from Myrtus communis L. leaves. Food Chemistry, 166, 585-595. https://doi.org/10.1016/j.foodchem.2014.06.066
Dahmoune F, et al. Optimization of Microwave-assisted Extraction of Polyphenols From Myrtus Communis L. Leaves. Food Chem. 2015 Jan 1;166:585-595. PubMed PMID: 25053097.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Optimization of microwave-assisted extraction of polyphenols from Myrtus communis L. leaves. AU - Dahmoune,Farid, AU - Nayak,Balunkeswar, AU - Moussi,Kamal, AU - Remini,Hocine, AU - Madani,Khodir, Y1 - 2014/06/23/ PY - 2013/08/25/received PY - 2014/06/07/revised PY - 2014/06/15/accepted PY - 2014/7/24/entrez PY - 2014/7/24/pubmed PY - 2015/6/17/medline KW - Antioxidant activity KW - Microwave extraction KW - Myrtus leaves KW - Phenolic compounds KW - Response surface method KW - Ultrasound extraction SP - 585 EP - 595 JF - Food chemistry JO - Food Chem VL - 166 N2 - Phytochemicals, such as phenolic compounds, are of great interest due to their health-benefitting antioxidant properties and possible protection against inflammation, cardiovascular diseases and certain types of cancer. Maximum retention of these phytochemicals during extraction requires optimised process parameter conditions. A microwave-assisted extraction (MAE) method was investigated for extraction of total phenolics from Myrtus communis leaves. The total phenolic capacity (TPC) of leaf extracts at optimised MAE conditions was compared with ultrasound-assisted extraction (UAE) and conventional solvent extraction (CSE). The influence of extraction parameters including ethanol concentration, microwave power, irradiation time and solvent-to-solid ratio on the extraction of TPC was modeled by using a second-order regression equation. The optimal MAE conditions were 42% ethanol concentration, 500 W microwave power, 62 s irradiation time and 32 mL/g solvent to material ratio. Ethanol concentration and liquid-to-solid ratio were the significant parameters for the extraction process (p<0.01). Under the MAE optimised conditions, the recovery of TPC was 162.49 ± 16.95 mg gallic acidequivalent/gdry weight(DW), approximating the predicted content (166.13 mg GAE/g DW). When bioactive phytochemicals extracted from Myrtus leaves using MAE compared with UAE and CSE, it was also observed that tannins (32.65 ± 0.01 mg/g), total flavonoids (5.02 ± 0.05 mg QE/g) and antioxidant activities (38.20 ± 1.08 μg GAE/mL) in MAE extracts were higher than the other two extracts. These findings further illustrate that extraction of bioactive phytochemicals from plant materials using MAE method consumes less extraction solvent and saves time. SN - 1873-7072 UR - https://www.unboundmedicine.com/medline/citation/25053097/Optimization_of_microwave_assisted_extraction_of_polyphenols_from_Myrtus_communis_L__leaves_ L2 - https://linkinghub.elsevier.com/retrieve/pii/S0308-8146(14)00952-2 DB - PRIME DP - Unbound Medicine ER -