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Isabel C.f.r. Ferreira - One of the best experts on this subject based on the ideXlab platform.
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Ultrasound as a Rapid and Low-Cost Extraction Procedure to Obtain Anthocyanin-Based Colorants from Prunus spinosa L. Fruit Epicarp: Comparative Study with Conventional Heat-Based Extraction.
Molecules (Basel Switzerland), 2019Co-Authors: Maria G. Leichtweis, Carla Pereira, Prieto, Maria Filomena Barreiro, Ilton José Baraldi, Lillian Barros, Isabel C.f.r. FerreiraAbstract:An Ultrasound rapid and low-cost procedure for anthocyanin-based colorants from Prunus spinosa L. fruit epicarp was developed, and the advantages were compared with conventional heat-based Extraction. To obtain the conditions that maximize anthocyanins’ Extraction, a response surface methodology was applied using the variables of time, temperature, and ethanol content, in the case of heat Extraction, whereas for Ultrasound assisted Extraction, temperature was replaced by Ultrasound power. Two anthocyanin compounds were identified by HPLC-DAD-ESI/MS—namely, cyanidin 3-rutinoside and peonidin 3-rutinoside. The responses used were the Extraction yield and the content of the identified anthocyanins. Ultrasound Extraction was the most effective method at 5.00 ± 0.15 min, 400.00 ± 32.00 W, and 47.98% ± 2.88% of ethanol obtaining 68.60% ± 2.06% of extracted residue, with an anthocyanin content of 18.17 mg/g (extract-basis) and 11.76 mg/g (epicarp-basis). Overall, a viable green process was achieved that could be used to support pilot-scale studies for industrial production of anthocyanin-based colorants from P. spinosa fruit epicarp.
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recovery of bioactive compounds from arbutus unedo l fruits comparative optimization study of maceration microwave Ultrasound Extraction techniques
Food Research International, 2018Co-Authors: Bianca R Albuquerque, Maria Filomena Barreiro, M A Prieto, Jose Antonio Vazquez, Lilian Barros, Isabel C.f.r. FerreiraAbstract:Abstract The aim of this work was to produce an extract rich in different bioactive compounds from Arbutus unedo L. fruits to enhance its possible valorization and commercialization. The conditions of the main variables of maceration, microwave, and Ultrasound assisted Extractions (MA, MAE and UAE, respectively) were optimized and compared in terms of its composition (based on the total material extracted, total content in carbohydrates, phenolic and flavonoid compounds) and its preservative potential (based on the response of four in vitro antioxidant assays). The key variables of each Extraction technique (time, temperature or power and hydroalcoholic mixture) were evaluated by specific experimental designs using response surface methodology. Mathematical models were developed and numerical optimal values for each Extraction technique and response were achieved. Regarding the Extraction of target compositional compounds, MAE was the most efficient, closely followed by MA. In terms of its preservative potential, MAE was the most suitable solution, but MA gave similar results at lower temperatures (~90 °C). Globally, MA and MAE were the best options conducting to optimal solutions using reduced amounts of ethanol. UAE required higher ethanol contents (~60%). The results showed alternatives to obtain extracts of A. unedo fruits, supporting their potential to be exploited at industrial level.
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catechin based extract optimization obtained from arbutus unedo l fruits using maceration microwave Ultrasound Extraction techniques
Industrial Crops and Products, 2017Co-Authors: Bianca R Albuquerque, Maria Filomena Barreiro, Lillian Barros, Miguel Prieto, Alirio E Rodrigues, Thomas P Curran, Isabel C.f.r. FerreiraAbstract:Abstract This study compares three Extraction techniques (maceration, microwave and Ultrasound) for catechin recover from Arbutus unedo fruit extracts. To obtain the conditions that maximize catechin Extraction yield, a response surface methodology was applied using a 3-level full factorial Box–Behnken design in which the processing time (t), temperature (T), ultrasonic power (W) and ethanol percentage (Et%) were the relevant independent variables with the response (catechin content, mg/g dw) measured by HPLC-PDA. A fixed solid/solvent ratio of 50 g/L was used in all techniques. Maceration and microwave Extractions were found to be the most effective methods, capable of yielding 1.38 ± 0.1 and 1.70 ± 0.3 mg/g dw of catechin, respectively at the optimal Extraction conditions. The optimal conditions for maceration were 93.2 ± 3.7 min, 79.6 ± 5.2 °C and 23.1 ± 3.7% of ethanol, while for the microwave Extraction were 42.2 ± 4.1 min, 137.1 ± 8.1 °C and 12.1 ± 1.1% of ethanol. Comparatively with maceration, the microwave system was a faster solution, conducting to slightly higher catechin yields, but using higher temperatures to reach similar values. The Ultrasound method was the least effective solution, yielding 0.71 ± 0.1 mg/g dw of catechin at 42.4 ± 3.6 min, 314.9 ± 21.2 W and 40.3 ± 3.8% ethanol. The results highlight the potential of using A. unedo fruits bio-residues as a productive source of catechin.
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ceratonia siliqua l hydroethanolic extract obtained by ultrasonication antioxidant activity phenolic compounds profile and effects in yogurts functionalized with their free and microencapsulated forms
Food & Function, 2016Co-Authors: Irada Rached, Maria Filomena Barreiro, Lillian Barros, Alirio E Rodrigues, Isabel Fernandes, Celestino Santosbuelga, Ali Ferchichi, Isabel C.f.r. FerreiraAbstract:Bioactive extracts were obtained from powdered carob pulp through an Ultrasound Extraction process and then evaluated in terms of antioxidant activity. Ten minutes of ultrasonication at 375 Hz were the optimal conditions leading to an extract with the highest antioxidant effects. After its chemical characterization, which revealed the preponderance of gallotannins, the extract (free and microencapsulated) was incorporated in yogurts. The microspheres were prepared using an extract/sodium alginate ratio of 100/400 (mg mg−1) selected after testing different ratios. The yogurts with the free extract exhibited higher antioxidant activity than the samples added with the encapsulated extracts, showing the preserving role of alginate as a coating material. None of the forms significantly altered the yogurt's nutritional value. This study confirmed the efficiency of microencapsulation to stabilize functional ingredients in food matrices maintaining almost the structural integrity of polyphenols extracted from carob pulp and furthermore improving the antioxidant potency of the final product.
Maria Filomena Barreiro - One of the best experts on this subject based on the ideXlab platform.
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Ultrasound as a Rapid and Low-Cost Extraction Procedure to Obtain Anthocyanin-Based Colorants from Prunus spinosa L. Fruit Epicarp: Comparative Study with Conventional Heat-Based Extraction.
Molecules (Basel Switzerland), 2019Co-Authors: Maria G. Leichtweis, Carla Pereira, Prieto, Maria Filomena Barreiro, Ilton José Baraldi, Lillian Barros, Isabel C.f.r. FerreiraAbstract:An Ultrasound rapid and low-cost procedure for anthocyanin-based colorants from Prunus spinosa L. fruit epicarp was developed, and the advantages were compared with conventional heat-based Extraction. To obtain the conditions that maximize anthocyanins’ Extraction, a response surface methodology was applied using the variables of time, temperature, and ethanol content, in the case of heat Extraction, whereas for Ultrasound assisted Extraction, temperature was replaced by Ultrasound power. Two anthocyanin compounds were identified by HPLC-DAD-ESI/MS—namely, cyanidin 3-rutinoside and peonidin 3-rutinoside. The responses used were the Extraction yield and the content of the identified anthocyanins. Ultrasound Extraction was the most effective method at 5.00 ± 0.15 min, 400.00 ± 32.00 W, and 47.98% ± 2.88% of ethanol obtaining 68.60% ± 2.06% of extracted residue, with an anthocyanin content of 18.17 mg/g (extract-basis) and 11.76 mg/g (epicarp-basis). Overall, a viable green process was achieved that could be used to support pilot-scale studies for industrial production of anthocyanin-based colorants from P. spinosa fruit epicarp.
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recovery of bioactive compounds from arbutus unedo l fruits comparative optimization study of maceration microwave Ultrasound Extraction techniques
Food Research International, 2018Co-Authors: Bianca R Albuquerque, Maria Filomena Barreiro, M A Prieto, Jose Antonio Vazquez, Lilian Barros, Isabel C.f.r. FerreiraAbstract:Abstract The aim of this work was to produce an extract rich in different bioactive compounds from Arbutus unedo L. fruits to enhance its possible valorization and commercialization. The conditions of the main variables of maceration, microwave, and Ultrasound assisted Extractions (MA, MAE and UAE, respectively) were optimized and compared in terms of its composition (based on the total material extracted, total content in carbohydrates, phenolic and flavonoid compounds) and its preservative potential (based on the response of four in vitro antioxidant assays). The key variables of each Extraction technique (time, temperature or power and hydroalcoholic mixture) were evaluated by specific experimental designs using response surface methodology. Mathematical models were developed and numerical optimal values for each Extraction technique and response were achieved. Regarding the Extraction of target compositional compounds, MAE was the most efficient, closely followed by MA. In terms of its preservative potential, MAE was the most suitable solution, but MA gave similar results at lower temperatures (~90 °C). Globally, MA and MAE were the best options conducting to optimal solutions using reduced amounts of ethanol. UAE required higher ethanol contents (~60%). The results showed alternatives to obtain extracts of A. unedo fruits, supporting their potential to be exploited at industrial level.
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catechin based extract optimization obtained from arbutus unedo l fruits using maceration microwave Ultrasound Extraction techniques
Industrial Crops and Products, 2017Co-Authors: Bianca R Albuquerque, Maria Filomena Barreiro, Lillian Barros, Miguel Prieto, Alirio E Rodrigues, Thomas P Curran, Isabel C.f.r. FerreiraAbstract:Abstract This study compares three Extraction techniques (maceration, microwave and Ultrasound) for catechin recover from Arbutus unedo fruit extracts. To obtain the conditions that maximize catechin Extraction yield, a response surface methodology was applied using a 3-level full factorial Box–Behnken design in which the processing time (t), temperature (T), ultrasonic power (W) and ethanol percentage (Et%) were the relevant independent variables with the response (catechin content, mg/g dw) measured by HPLC-PDA. A fixed solid/solvent ratio of 50 g/L was used in all techniques. Maceration and microwave Extractions were found to be the most effective methods, capable of yielding 1.38 ± 0.1 and 1.70 ± 0.3 mg/g dw of catechin, respectively at the optimal Extraction conditions. The optimal conditions for maceration were 93.2 ± 3.7 min, 79.6 ± 5.2 °C and 23.1 ± 3.7% of ethanol, while for the microwave Extraction were 42.2 ± 4.1 min, 137.1 ± 8.1 °C and 12.1 ± 1.1% of ethanol. Comparatively with maceration, the microwave system was a faster solution, conducting to slightly higher catechin yields, but using higher temperatures to reach similar values. The Ultrasound method was the least effective solution, yielding 0.71 ± 0.1 mg/g dw of catechin at 42.4 ± 3.6 min, 314.9 ± 21.2 W and 40.3 ± 3.8% ethanol. The results highlight the potential of using A. unedo fruits bio-residues as a productive source of catechin.
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ceratonia siliqua l hydroethanolic extract obtained by ultrasonication antioxidant activity phenolic compounds profile and effects in yogurts functionalized with their free and microencapsulated forms
Food & Function, 2016Co-Authors: Irada Rached, Maria Filomena Barreiro, Lillian Barros, Alirio E Rodrigues, Isabel Fernandes, Celestino Santosbuelga, Ali Ferchichi, Isabel C.f.r. FerreiraAbstract:Bioactive extracts were obtained from powdered carob pulp through an Ultrasound Extraction process and then evaluated in terms of antioxidant activity. Ten minutes of ultrasonication at 375 Hz were the optimal conditions leading to an extract with the highest antioxidant effects. After its chemical characterization, which revealed the preponderance of gallotannins, the extract (free and microencapsulated) was incorporated in yogurts. The microspheres were prepared using an extract/sodium alginate ratio of 100/400 (mg mg−1) selected after testing different ratios. The yogurts with the free extract exhibited higher antioxidant activity than the samples added with the encapsulated extracts, showing the preserving role of alginate as a coating material. None of the forms significantly altered the yogurt's nutritional value. This study confirmed the efficiency of microencapsulation to stabilize functional ingredients in food matrices maintaining almost the structural integrity of polyphenols extracted from carob pulp and furthermore improving the antioxidant potency of the final product.
Jose V Garciaperez - One of the best experts on this subject based on the ideXlab platform.
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ultrasonically assisted and conventional Extraction from erodium glaucophyllum roots using ethanol water mixtures phenolic characterization antioxidant and anti inflammatory activities
Molecules, 2020Co-Authors: Francisco J Barba, Cristina Alcantara, Maria Carmen Collado, Radhia Abdelkebir, Christine Bauerl, Gaspar Perezmartinez, Jose M Lorenzo, Jose V GarciaperezAbstract:The paper presents experimental results concerning the ultrasonically-assisted Extraction of bioactive compounds from Erodium glaucophyllum roots. A comparison with conventional methodology is presented, and thereby the phytochemical composition and the antioxidant and anti-inflammatory activities of extracts are evaluated. The phenolic profile of Erodium extracts was analyzed by TOF–LC–MS–MS. The identification of phenolic compounds revealed that the major component was (+)-gallocatechin in the aqueous extracts obtained for the different Extraction methodologies. The highest quantity of phenolic compounds and antioxidant capacity was found in the hydroethanolic extract obtained by conventional Extraction (29.22–25.50 mg GAE/g DM; 21.174 mM Trolox equivalent). The highest content of carotenoids, varying from 0.035 to 0.114 mg/g dry matter, was reached by ultrasonic-assisted Extraction. Furthermore, Erodium extracts showed a potent inhibition of the inflammatory reaction by means of the inhibition of tumor necrosis factor-alpha (TNF-α). The extracts obtained when Ultrasound Extraction was combined with ethanol:water (50:50, v/v) presented the greatest inhibition (92%).
Gustavo Adolfo Saavedra Pinto - One of the best experts on this subject based on the ideXlab platform.
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optimization of Ultrasound Extraction of phenolic compounds from coconut cocos nucifera shell powder by response surface methodology
Ultrasonics Sonochemistry, 2008Co-Authors: Sueli Rodrigues, Gustavo Adolfo Saavedra Pinto, Fabiano A N FernandesAbstract:Coconut is a tropical fruit largely consumed in many countries. In some areas of the Brazilian coast, coconut shell represents more than 60% of the domestic waste volume. The coconut shell is composed mainly of lignin and cellulose, having a chemical composition very similar to wood and suitable for phenolic Extraction. In this work, the use of Ultrasound to extract phenolic compounds from coconut shell was evaluated. The effect of temperature, solution to solid ratio, pH and Extraction time were evaluated through a 2(4) experimental planning. The Extraction process was also optimized using surface response methodology. At the optimum operating condition (30 degrees C, solution to solid ratio of 50, 15 min of Extraction and pH 6.5) the process yielded 22.44 mg of phenolic compounds per gram of coconut shell.
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Ultrasound Extraction of phenolic compounds from coconut cocos nucifera shell powder
Journal of Food Engineering, 2007Co-Authors: Sueli Rodrigues, Gustavo Adolfo Saavedra PintoAbstract:Coconut is a tropical fruit largely consumed in many countries. In some areas of the Brazilian coast, coconut shell represents more than 60% of the domestic waste volume. The shell is composed mainly of lignin and cellulose with chemical composition very similar to wood. As several kinds of wood are used as a phenolic source to produce extracts for artificial aging of alcoholic beverages, in this work, the coconut shell was evaluated as a source of phenolic compounds. The coconut powder was submitted to different toasting temperatures and the phenolic compounds were extracted by the application of Ultrasound. The Ultrasound Extraction methodology has been studied as a low cost alternative in substitution to solvent reflux Extraction. The experiments were done according to a factorial experimental planning and the effects of toasting time, toasting temperature and Extraction time were evaluated through response surface methodology. The results indicate that high amounts of phenolics can be extracted from coconut shell by Ultrasound assisted Extraction technology, and that the Extraction time was the most significant parameter for the process.
Radhia Abdelkebir - One of the best experts on this subject based on the ideXlab platform.
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ultrasonically assisted and conventional Extraction from erodium glaucophyllum roots using ethanol water mixtures phenolic characterization antioxidant and anti inflammatory activities
Molecules, 2020Co-Authors: Francisco J Barba, Cristina Alcantara, Maria Carmen Collado, Radhia Abdelkebir, Christine Bauerl, Gaspar Perezmartinez, Jose M Lorenzo, Jose V GarciaperezAbstract:The paper presents experimental results concerning the ultrasonically-assisted Extraction of bioactive compounds from Erodium glaucophyllum roots. A comparison with conventional methodology is presented, and thereby the phytochemical composition and the antioxidant and anti-inflammatory activities of extracts are evaluated. The phenolic profile of Erodium extracts was analyzed by TOF–LC–MS–MS. The identification of phenolic compounds revealed that the major component was (+)-gallocatechin in the aqueous extracts obtained for the different Extraction methodologies. The highest quantity of phenolic compounds and antioxidant capacity was found in the hydroethanolic extract obtained by conventional Extraction (29.22–25.50 mg GAE/g DM; 21.174 mM Trolox equivalent). The highest content of carotenoids, varying from 0.035 to 0.114 mg/g dry matter, was reached by ultrasonic-assisted Extraction. Furthermore, Erodium extracts showed a potent inhibition of the inflammatory reaction by means of the inhibition of tumor necrosis factor-alpha (TNF-α). The extracts obtained when Ultrasound Extraction was combined with ethanol:water (50:50, v/v) presented the greatest inhibition (92%).
