Coupling Ultrafiltration-Based Processes to Concentrate Phenolic Compounds from Aqueous Goji Berry Extracts
In this work, a membrane-based process for the purification and concentration of antioxidant compounds from aqueous Goji (<i>Lycium barbarum</i> L.) berry extracts was investigated. The aqueous extract was previously clarified with hollow fiber ultrafiltration (UF) membranes in order to...
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| Format: | Article |
| Language: | English |
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MDPI AG
2020-08-01
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| Series: | Molecules |
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| Online Access: | https://www.mdpi.com/1420-3049/25/16/3761 |
| _version_ | 1797557352655749120 |
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| author | Carmela Conidi Enrico Drioli Alfredo Cassano |
| author_facet | Carmela Conidi Enrico Drioli Alfredo Cassano |
| author_sort | Carmela Conidi |
| collection | DOAJ |
| description | In this work, a membrane-based process for the purification and concentration of antioxidant compounds from aqueous Goji (<i>Lycium barbarum</i> L.) berry extracts was investigated. The aqueous extract was previously clarified with hollow fiber ultrafiltration (UF) membranes in order to remove suspended solids and β-carotene and to produce a clarified extract enriched in phenolic compounds. Then, three UF flat sheet polyamide membranes with a molecular weight cut-off (MWCO) in the range 1000–3500 Da were tested to purify and concentrate phenolic compounds from the clarified extract. The effect of MWCO and transmembrane pressure (TMP) on the performance of selected membranes in terms of productivity and selectivity towards total dissolved solids (TDS), total phenolic compounds (TPC), total carbohydrates (TC) and total antioxidant activity (TAA) was evaluated. Experimental results indicated that the 2500 Da membrane exhibited a lower fouling index, higher cleaning efficiency, lower rejection towards carbohydrates (lower than 30%) and higher rejection towards phenolic compounds (higher than 50%) in comparison to the other investigated membranes. The inclusion of a diafiltration process in the treatment of the clarified extract with this membrane in a spiral-wound configuration improved the concentration of sugar compounds in the permeate stream and increased the purification of phenolic compounds in the retentate fraction. |
| first_indexed | 2024-03-10T17:15:57Z |
| format | Article |
| id | doaj.art-15b29a054733445bac30418938b42b6a |
| institution | Directory Open Access Journal |
| issn | 1420-3049 |
| language | English |
| last_indexed | 2024-03-10T17:15:57Z |
| publishDate | 2020-08-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Molecules |
| spelling | doaj.art-15b29a054733445bac30418938b42b6a2023-11-20T10:30:20ZengMDPI AGMolecules1420-30492020-08-012516376110.3390/molecules25163761Coupling Ultrafiltration-Based Processes to Concentrate Phenolic Compounds from Aqueous Goji Berry ExtractsCarmela Conidi0Enrico Drioli1Alfredo Cassano2Institute on Membrane Technology, ITM-CNR, Via P. Bucci 17/C, 87036 CS Rende, ItalyInstitute on Membrane Technology, ITM-CNR, Via P. Bucci 17/C, 87036 CS Rende, ItalyDepartment of Engineering and of the Environment, University of Calabria, Via P. Bucci 45/A, 87036 CS Rende, ItalyIn this work, a membrane-based process for the purification and concentration of antioxidant compounds from aqueous Goji (<i>Lycium barbarum</i> L.) berry extracts was investigated. The aqueous extract was previously clarified with hollow fiber ultrafiltration (UF) membranes in order to remove suspended solids and β-carotene and to produce a clarified extract enriched in phenolic compounds. Then, three UF flat sheet polyamide membranes with a molecular weight cut-off (MWCO) in the range 1000–3500 Da were tested to purify and concentrate phenolic compounds from the clarified extract. The effect of MWCO and transmembrane pressure (TMP) on the performance of selected membranes in terms of productivity and selectivity towards total dissolved solids (TDS), total phenolic compounds (TPC), total carbohydrates (TC) and total antioxidant activity (TAA) was evaluated. Experimental results indicated that the 2500 Da membrane exhibited a lower fouling index, higher cleaning efficiency, lower rejection towards carbohydrates (lower than 30%) and higher rejection towards phenolic compounds (higher than 50%) in comparison to the other investigated membranes. The inclusion of a diafiltration process in the treatment of the clarified extract with this membrane in a spiral-wound configuration improved the concentration of sugar compounds in the permeate stream and increased the purification of phenolic compounds in the retentate fraction.https://www.mdpi.com/1420-3049/25/16/3761<i>Lycium barbarum</i> L.Goji berriesultrafiltrationantioxidantsphenolic compoundsmembrane processes |
| spellingShingle | Carmela Conidi Enrico Drioli Alfredo Cassano Coupling Ultrafiltration-Based Processes to Concentrate Phenolic Compounds from Aqueous Goji Berry Extracts Molecules <i>Lycium barbarum</i> L. Goji berries ultrafiltration antioxidants phenolic compounds membrane processes |
| title | Coupling Ultrafiltration-Based Processes to Concentrate Phenolic Compounds from Aqueous Goji Berry Extracts |
| title_full | Coupling Ultrafiltration-Based Processes to Concentrate Phenolic Compounds from Aqueous Goji Berry Extracts |
| title_fullStr | Coupling Ultrafiltration-Based Processes to Concentrate Phenolic Compounds from Aqueous Goji Berry Extracts |
| title_full_unstemmed | Coupling Ultrafiltration-Based Processes to Concentrate Phenolic Compounds from Aqueous Goji Berry Extracts |
| title_short | Coupling Ultrafiltration-Based Processes to Concentrate Phenolic Compounds from Aqueous Goji Berry Extracts |
| title_sort | coupling ultrafiltration based processes to concentrate phenolic compounds from aqueous goji berry extracts |
| topic | <i>Lycium barbarum</i> L. Goji berries ultrafiltration antioxidants phenolic compounds membrane processes |
| url | https://www.mdpi.com/1420-3049/25/16/3761 |
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