A Cross-Flow Ultrasound-Assisted Extraction of Curcuminoids from <i>Curcuma longa</i> L.: Process Design to Avoid Degradation
Rhizomes of <i>Curcuma longa</i> L. are well known for their content of curcuminoids, which are compounds with interesting biological activity against various inflammatory states and diseases. Curcuminoids can degrade during processing. This piece of work investigates fast, efficient and...
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| Format: | Article |
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MDPI AG
2020-06-01
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| Series: | Foods |
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| Online Access: | https://www.mdpi.com/2304-8158/9/6/743 |
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| author | Arianna Binello Giorgio Grillo Alessandro Barge Pietro Allegrini Daniele Ciceri Giancarlo Cravotto |
| author_facet | Arianna Binello Giorgio Grillo Alessandro Barge Pietro Allegrini Daniele Ciceri Giancarlo Cravotto |
| author_sort | Arianna Binello |
| collection | DOAJ |
| description | Rhizomes of <i>Curcuma longa</i> L. are well known for their content of curcuminoids, which are compounds with interesting biological activity against various inflammatory states and diseases. Curcuminoids can degrade during processing. This piece of work investigates fast, efficient and cost-effective metabolite recovery from turmeric under ultrasound-assisted extraction (UAE). An analytical evaluation of curcuminoid stability under sonication in different solvents is reported for the first time. HPLC and quantitative <sup>1</sup>H-NMR were used. Under the applied conditions, EtOAc was found to be the optimal extraction medium, rather than EtOH, due to its lower radical generation, which facilitates better curcuminoid stability. Kinetic characterization, by means of the Peleg equation, was applied for single-step UAE on two different rhizome granulometries. Over a time of 90 min, maximum extraction yields were 25.63% and 47.56% for 6 and 2 mm matrix powders, respectively. However, it was observed that the largest portion of curcuminoid recovery was achieved in the first 30 min. Model outcomes were used as the basis for the design of a suitable multi-step cross-flow approach that supports and emphasizes the disruptive role of cavitation. The maximum curcuminoid yield was achieved over three steps (92.10%) and four steps (80.04%), for lower and higher granulometries, respectively. Finally, the central role of the solvent was further confirmed by turmeric oleoresin purification. The EtOAc extract was purified via crystallization, and a 95% pure curcuminoid product was isolated without any chromatographic procedure. No suitable crystallization was observed for the EtOH extract. |
| first_indexed | 2024-03-10T19:23:18Z |
| format | Article |
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| institution | Directory Open Access Journal |
| issn | 2304-8158 |
| language | English |
| last_indexed | 2024-03-10T19:23:18Z |
| publishDate | 2020-06-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Foods |
| spelling | doaj.art-ea25bddfc1e84872b885426d7477af4a2023-11-20T02:49:52ZengMDPI AGFoods2304-81582020-06-019674310.3390/foods9060743A Cross-Flow Ultrasound-Assisted Extraction of Curcuminoids from <i>Curcuma longa</i> L.: Process Design to Avoid DegradationArianna Binello0Giorgio Grillo1Alessandro Barge2Pietro Allegrini3Daniele Ciceri4Giancarlo Cravotto5Dipartimento di Scienza e Tecnologia del Farmaco, University of Turin, Via P. Giuria 9, 10125 Turin, ItalyDipartimento di Scienza e Tecnologia del Farmaco, University of Turin, Via P. Giuria 9, 10125 Turin, ItalyDipartimento di Scienza e Tecnologia del Farmaco, University of Turin, Via P. Giuria 9, 10125 Turin, ItalyINDENA S.pA., Viale Ortles, 12, 20139 Milan, ItalyINDENA S.pA., Viale Ortles, 12, 20139 Milan, ItalyDipartimento di Scienza e Tecnologia del Farmaco, University of Turin, Via P. Giuria 9, 10125 Turin, ItalyRhizomes of <i>Curcuma longa</i> L. are well known for their content of curcuminoids, which are compounds with interesting biological activity against various inflammatory states and diseases. Curcuminoids can degrade during processing. This piece of work investigates fast, efficient and cost-effective metabolite recovery from turmeric under ultrasound-assisted extraction (UAE). An analytical evaluation of curcuminoid stability under sonication in different solvents is reported for the first time. HPLC and quantitative <sup>1</sup>H-NMR were used. Under the applied conditions, EtOAc was found to be the optimal extraction medium, rather than EtOH, due to its lower radical generation, which facilitates better curcuminoid stability. Kinetic characterization, by means of the Peleg equation, was applied for single-step UAE on two different rhizome granulometries. Over a time of 90 min, maximum extraction yields were 25.63% and 47.56% for 6 and 2 mm matrix powders, respectively. However, it was observed that the largest portion of curcuminoid recovery was achieved in the first 30 min. Model outcomes were used as the basis for the design of a suitable multi-step cross-flow approach that supports and emphasizes the disruptive role of cavitation. The maximum curcuminoid yield was achieved over three steps (92.10%) and four steps (80.04%), for lower and higher granulometries, respectively. Finally, the central role of the solvent was further confirmed by turmeric oleoresin purification. The EtOAc extract was purified via crystallization, and a 95% pure curcuminoid product was isolated without any chromatographic procedure. No suitable crystallization was observed for the EtOH extract.https://www.mdpi.com/2304-8158/9/6/743<i>Curcuma longa</i> L.curcuminoid stabilitymulti-step extractionultrasound-assisted extractionextraction kinetic |
| spellingShingle | Arianna Binello Giorgio Grillo Alessandro Barge Pietro Allegrini Daniele Ciceri Giancarlo Cravotto A Cross-Flow Ultrasound-Assisted Extraction of Curcuminoids from <i>Curcuma longa</i> L.: Process Design to Avoid Degradation Foods <i>Curcuma longa</i> L. curcuminoid stability multi-step extraction ultrasound-assisted extraction extraction kinetic |
| title | A Cross-Flow Ultrasound-Assisted Extraction of Curcuminoids from <i>Curcuma longa</i> L.: Process Design to Avoid Degradation |
| title_full | A Cross-Flow Ultrasound-Assisted Extraction of Curcuminoids from <i>Curcuma longa</i> L.: Process Design to Avoid Degradation |
| title_fullStr | A Cross-Flow Ultrasound-Assisted Extraction of Curcuminoids from <i>Curcuma longa</i> L.: Process Design to Avoid Degradation |
| title_full_unstemmed | A Cross-Flow Ultrasound-Assisted Extraction of Curcuminoids from <i>Curcuma longa</i> L.: Process Design to Avoid Degradation |
| title_short | A Cross-Flow Ultrasound-Assisted Extraction of Curcuminoids from <i>Curcuma longa</i> L.: Process Design to Avoid Degradation |
| title_sort | cross flow ultrasound assisted extraction of curcuminoids from i curcuma longa i l process design to avoid degradation |
| topic | <i>Curcuma longa</i> L. curcuminoid stability multi-step extraction ultrasound-assisted extraction extraction kinetic |
| url | https://www.mdpi.com/2304-8158/9/6/743 |
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