Optimization of microwave-assisted extraction of polyphenols from Myrtus communis L. leaves
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 p...
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| Autor*in: |
Dahmoune, Farid [verfasserIn] |
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| Format: |
Artikel |
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| Sprache: |
Englisch |
| Erschienen: |
2015 |
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Nutzungsrecht: Copyright © 2014 Elsevier Ltd. All rights reserved. © COPYRIGHT 2015 Elsevier B.V. |
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| Übergeordnetes Werk: |
Enthalten in: Food chemistry - Amsterdam [u.a.] : Elsevier, 1976, 166(2015), Seite 585-595 |
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| Übergeordnetes Werk: |
volume:166 ; year:2015 ; pages:585-595 |
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| DOI / URN: |
10.1016/j.foodchem.2014.06.066 |
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| 520 | |a 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. | ||
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| 650 | 4 | |a Tannins - analysis | |
| 650 | 4 | |a Plant Leaves - chemistry | |
| 650 | 4 | |a Myrtus - chemistry | |
| 650 | 4 | |a Solvents - chemistry | |
| 650 | 4 | |a Flavonoids - analysis | |
| 650 | 4 | |a Antioxidants - analysis | |
| 650 | 4 | |a Ethanol - chemistry | |
| 650 | 4 | |a Phytochemicals - analysis | |
| 650 | 4 | |a Plant Extracts - analysis | |
| 650 | 4 | |a Polyphenols - analysis | |
| 650 | 4 | |a Polyphenols | |
| 700 | 1 | |a Nayak, Balunkeswar |4 oth | |
| 700 | 1 | |a Moussi, Kamal |4 oth | |
| 700 | 1 | |a Remini, Hocine |4 oth | |
| 700 | 1 | |a Madani, Khodir |4 oth | |
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10.1016/j.foodchem.2014.06.066 doi PQ20160617 (DE-627)OLC1965049893 (DE-599)GBVOLC1965049893 (PRQ)c1539-9e52b34ff1109917705e6156a678a9ff24253a9c17ffc0d574fd4b27884618830 (KEY)0039580320150000166000000585optimizationofmicrowaveassistedextractionofpolyphe DE-627 ger DE-627 rakwb eng 540 660 DNB 58.34 bkl 58.00 bkl Dahmoune, Farid verfasserin aut Optimization of microwave-assisted extraction of polyphenols from Myrtus communis L. leaves 2015 Text txt rdacontent ohne Hilfsmittel zu benutzen n rdamedia Band nc rdacarrier 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. Nutzungsrecht: Copyright © 2014 Elsevier Ltd. All rights reserved. © COPYRIGHT 2015 Elsevier B.V. Tannins - analysis Plant Leaves - chemistry Myrtus - chemistry Solvents - chemistry Flavonoids - analysis Antioxidants - analysis Ethanol - chemistry Phytochemicals - analysis Plant Extracts - analysis Polyphenols - analysis Polyphenols Nayak, Balunkeswar oth Moussi, Kamal oth Remini, Hocine oth Madani, Khodir oth Enthalten in Food chemistry Amsterdam [u.a.] : Elsevier, 1976 166(2015), Seite 585-595 (DE-627)129611751 (DE-600)243123-3 (DE-576)015107418 0308-8146 nnns volume:166 year:2015 pages:585-595 http://dx.doi.org/10.1016/j.foodchem.2014.06.066 Volltext http://www.ncbi.nlm.nih.gov/pubmed/25053097 GBV_USEFLAG_A SYSFLAG_A GBV_OLC SSG-OLC-TEC SSG-OLC-CHE GBV_ILN_70 GBV_ILN_4012 GBV_ILN_4219 58.34 AVZ 58.00 AVZ AR 166 2015 585-595 |
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10.1016/j.foodchem.2014.06.066 doi PQ20160617 (DE-627)OLC1965049893 (DE-599)GBVOLC1965049893 (PRQ)c1539-9e52b34ff1109917705e6156a678a9ff24253a9c17ffc0d574fd4b27884618830 (KEY)0039580320150000166000000585optimizationofmicrowaveassistedextractionofpolyphe DE-627 ger DE-627 rakwb eng 540 660 DNB 58.34 bkl 58.00 bkl Dahmoune, Farid verfasserin aut Optimization of microwave-assisted extraction of polyphenols from Myrtus communis L. leaves 2015 Text txt rdacontent ohne Hilfsmittel zu benutzen n rdamedia Band nc rdacarrier 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. Nutzungsrecht: Copyright © 2014 Elsevier Ltd. All rights reserved. © COPYRIGHT 2015 Elsevier B.V. Tannins - analysis Plant Leaves - chemistry Myrtus - chemistry Solvents - chemistry Flavonoids - analysis Antioxidants - analysis Ethanol - chemistry Phytochemicals - analysis Plant Extracts - analysis Polyphenols - analysis Polyphenols Nayak, Balunkeswar oth Moussi, Kamal oth Remini, Hocine oth Madani, Khodir oth Enthalten in Food chemistry Amsterdam [u.a.] : Elsevier, 1976 166(2015), Seite 585-595 (DE-627)129611751 (DE-600)243123-3 (DE-576)015107418 0308-8146 nnns volume:166 year:2015 pages:585-595 http://dx.doi.org/10.1016/j.foodchem.2014.06.066 Volltext http://www.ncbi.nlm.nih.gov/pubmed/25053097 GBV_USEFLAG_A SYSFLAG_A GBV_OLC SSG-OLC-TEC SSG-OLC-CHE GBV_ILN_70 GBV_ILN_4012 GBV_ILN_4219 58.34 AVZ 58.00 AVZ AR 166 2015 585-595 |
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10.1016/j.foodchem.2014.06.066 doi PQ20160617 (DE-627)OLC1965049893 (DE-599)GBVOLC1965049893 (PRQ)c1539-9e52b34ff1109917705e6156a678a9ff24253a9c17ffc0d574fd4b27884618830 (KEY)0039580320150000166000000585optimizationofmicrowaveassistedextractionofpolyphe DE-627 ger DE-627 rakwb eng 540 660 DNB 58.34 bkl 58.00 bkl Dahmoune, Farid verfasserin aut Optimization of microwave-assisted extraction of polyphenols from Myrtus communis L. leaves 2015 Text txt rdacontent ohne Hilfsmittel zu benutzen n rdamedia Band nc rdacarrier 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. Nutzungsrecht: Copyright © 2014 Elsevier Ltd. All rights reserved. © COPYRIGHT 2015 Elsevier B.V. Tannins - analysis Plant Leaves - chemistry Myrtus - chemistry Solvents - chemistry Flavonoids - analysis Antioxidants - analysis Ethanol - chemistry Phytochemicals - analysis Plant Extracts - analysis Polyphenols - analysis Polyphenols Nayak, Balunkeswar oth Moussi, Kamal oth Remini, Hocine oth Madani, Khodir oth Enthalten in Food chemistry Amsterdam [u.a.] : Elsevier, 1976 166(2015), Seite 585-595 (DE-627)129611751 (DE-600)243123-3 (DE-576)015107418 0308-8146 nnns volume:166 year:2015 pages:585-595 http://dx.doi.org/10.1016/j.foodchem.2014.06.066 Volltext http://www.ncbi.nlm.nih.gov/pubmed/25053097 GBV_USEFLAG_A SYSFLAG_A GBV_OLC SSG-OLC-TEC SSG-OLC-CHE GBV_ILN_70 GBV_ILN_4012 GBV_ILN_4219 58.34 AVZ 58.00 AVZ AR 166 2015 585-595 |
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10.1016/j.foodchem.2014.06.066 doi PQ20160617 (DE-627)OLC1965049893 (DE-599)GBVOLC1965049893 (PRQ)c1539-9e52b34ff1109917705e6156a678a9ff24253a9c17ffc0d574fd4b27884618830 (KEY)0039580320150000166000000585optimizationofmicrowaveassistedextractionofpolyphe DE-627 ger DE-627 rakwb eng 540 660 DNB 58.34 bkl 58.00 bkl Dahmoune, Farid verfasserin aut Optimization of microwave-assisted extraction of polyphenols from Myrtus communis L. leaves 2015 Text txt rdacontent ohne Hilfsmittel zu benutzen n rdamedia Band nc rdacarrier 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. Nutzungsrecht: Copyright © 2014 Elsevier Ltd. All rights reserved. © COPYRIGHT 2015 Elsevier B.V. Tannins - analysis Plant Leaves - chemistry Myrtus - chemistry Solvents - chemistry Flavonoids - analysis Antioxidants - analysis Ethanol - chemistry Phytochemicals - analysis Plant Extracts - analysis Polyphenols - analysis Polyphenols Nayak, Balunkeswar oth Moussi, Kamal oth Remini, Hocine oth Madani, Khodir oth Enthalten in Food chemistry Amsterdam [u.a.] : Elsevier, 1976 166(2015), Seite 585-595 (DE-627)129611751 (DE-600)243123-3 (DE-576)015107418 0308-8146 nnns volume:166 year:2015 pages:585-595 http://dx.doi.org/10.1016/j.foodchem.2014.06.066 Volltext http://www.ncbi.nlm.nih.gov/pubmed/25053097 GBV_USEFLAG_A SYSFLAG_A GBV_OLC SSG-OLC-TEC SSG-OLC-CHE GBV_ILN_70 GBV_ILN_4012 GBV_ILN_4219 58.34 AVZ 58.00 AVZ AR 166 2015 585-595 |
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10.1016/j.foodchem.2014.06.066 doi PQ20160617 (DE-627)OLC1965049893 (DE-599)GBVOLC1965049893 (PRQ)c1539-9e52b34ff1109917705e6156a678a9ff24253a9c17ffc0d574fd4b27884618830 (KEY)0039580320150000166000000585optimizationofmicrowaveassistedextractionofpolyphe DE-627 ger DE-627 rakwb eng 540 660 DNB 58.34 bkl 58.00 bkl Dahmoune, Farid verfasserin aut Optimization of microwave-assisted extraction of polyphenols from Myrtus communis L. leaves 2015 Text txt rdacontent ohne Hilfsmittel zu benutzen n rdamedia Band nc rdacarrier 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. Nutzungsrecht: Copyright © 2014 Elsevier Ltd. All rights reserved. © COPYRIGHT 2015 Elsevier B.V. Tannins - analysis Plant Leaves - chemistry Myrtus - chemistry Solvents - chemistry Flavonoids - analysis Antioxidants - analysis Ethanol - chemistry Phytochemicals - analysis Plant Extracts - analysis Polyphenols - analysis Polyphenols Nayak, Balunkeswar oth Moussi, Kamal oth Remini, Hocine oth Madani, Khodir oth Enthalten in Food chemistry Amsterdam [u.a.] : Elsevier, 1976 166(2015), Seite 585-595 (DE-627)129611751 (DE-600)243123-3 (DE-576)015107418 0308-8146 nnns volume:166 year:2015 pages:585-595 http://dx.doi.org/10.1016/j.foodchem.2014.06.066 Volltext http://www.ncbi.nlm.nih.gov/pubmed/25053097 GBV_USEFLAG_A SYSFLAG_A GBV_OLC SSG-OLC-TEC SSG-OLC-CHE GBV_ILN_70 GBV_ILN_4012 GBV_ILN_4219 58.34 AVZ 58.00 AVZ AR 166 2015 585-595 |
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540 660 DNB 58.34 bkl 58.00 bkl Optimization of microwave-assisted extraction of polyphenols from Myrtus communis L. leaves Tannins - analysis Plant Leaves - chemistry Myrtus - chemistry Solvents - chemistry Flavonoids - analysis Antioxidants - analysis Ethanol - chemistry Phytochemicals - analysis Plant Extracts - analysis Polyphenols - analysis Polyphenols |
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optimization of microwave-assisted extraction of polyphenols from myrtus communis l. leaves |
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Optimization of microwave-assisted extraction of polyphenols from Myrtus communis L. leaves |
| 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. |
| abstractGer |
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. |
| abstract_unstemmed |
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. |
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Optimization of microwave-assisted extraction of polyphenols from Myrtus communis L. leaves |
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http://dx.doi.org/10.1016/j.foodchem.2014.06.066 http://www.ncbi.nlm.nih.gov/pubmed/25053097 |
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Nayak, Balunkeswar Moussi, Kamal Remini, Hocine Madani, Khodir |
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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.</subfield></datafield><datafield tag="540" ind1=" " ind2=" "><subfield code="a">Nutzungsrecht: Copyright © 2014 Elsevier Ltd. All rights reserved.</subfield></datafield><datafield tag="540" ind1=" " ind2=" "><subfield code="a">© COPYRIGHT 2015 Elsevier B.V.</subfield></datafield><datafield tag="650" ind1=" " ind2="4"><subfield code="a">Tannins - analysis</subfield></datafield><datafield tag="650" ind1=" " ind2="4"><subfield code="a">Plant Leaves - chemistry</subfield></datafield><datafield tag="650" ind1=" " ind2="4"><subfield code="a">Myrtus - chemistry</subfield></datafield><datafield tag="650" ind1=" " ind2="4"><subfield code="a">Solvents - chemistry</subfield></datafield><datafield tag="650" ind1=" " ind2="4"><subfield code="a">Flavonoids - analysis</subfield></datafield><datafield tag="650" ind1=" " ind2="4"><subfield code="a">Antioxidants - analysis</subfield></datafield><datafield tag="650" ind1=" " ind2="4"><subfield code="a">Ethanol - chemistry</subfield></datafield><datafield tag="650" ind1=" " ind2="4"><subfield code="a">Phytochemicals - analysis</subfield></datafield><datafield tag="650" ind1=" " ind2="4"><subfield code="a">Plant Extracts - analysis</subfield></datafield><datafield tag="650" ind1=" " ind2="4"><subfield code="a">Polyphenols - analysis</subfield></datafield><datafield tag="650" ind1=" " ind2="4"><subfield code="a">Polyphenols</subfield></datafield><datafield tag="700" ind1="1" ind2=" "><subfield code="a">Nayak, Balunkeswar</subfield><subfield code="4">oth</subfield></datafield><datafield tag="700" ind1="1" ind2=" "><subfield code="a">Moussi, Kamal</subfield><subfield code="4">oth</subfield></datafield><datafield tag="700" ind1="1" ind2=" "><subfield code="a">Remini, Hocine</subfield><subfield code="4">oth</subfield></datafield><datafield tag="700" ind1="1" ind2=" "><subfield code="a">Madani, Khodir</subfield><subfield code="4">oth</subfield></datafield><datafield tag="773" ind1="0" ind2="8"><subfield code="i">Enthalten in</subfield><subfield code="t">Food chemistry</subfield><subfield code="d">Amsterdam [u.a.] : Elsevier, 1976</subfield><subfield code="g">166(2015), Seite 585-595</subfield><subfield code="w">(DE-627)129611751</subfield><subfield code="w">(DE-600)243123-3</subfield><subfield code="w">(DE-576)015107418</subfield><subfield code="x">0308-8146</subfield><subfield code="7">nnns</subfield></datafield><datafield tag="773" ind1="1" ind2="8"><subfield code="g">volume:166</subfield><subfield code="g">year:2015</subfield><subfield code="g">pages:585-595</subfield></datafield><datafield tag="856" ind1="4" ind2="1"><subfield code="u">http://dx.doi.org/10.1016/j.foodchem.2014.06.066</subfield><subfield code="3">Volltext</subfield></datafield><datafield tag="856" ind1="4" ind2="2"><subfield code="u">http://www.ncbi.nlm.nih.gov/pubmed/25053097</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">GBV_USEFLAG_A</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">SYSFLAG_A</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">GBV_OLC</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">SSG-OLC-TEC</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">SSG-OLC-CHE</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">GBV_ILN_70</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">GBV_ILN_4012</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">GBV_ILN_4219</subfield></datafield><datafield tag="936" ind1="b" ind2="k"><subfield code="a">58.34</subfield><subfield code="q">AVZ</subfield></datafield><datafield tag="936" ind1="b" ind2="k"><subfield code="a">58.00</subfield><subfield code="q">AVZ</subfield></datafield><datafield tag="951" ind1=" " ind2=" "><subfield code="a">AR</subfield></datafield><datafield tag="952" ind1=" " ind2=" "><subfield code="d">166</subfield><subfield code="j">2015</subfield><subfield code="h">585-595</subfield></datafield></record></collection>
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