Impact of Extraction Conditions on Resveratrol Content and Antioxidant Properties of Japanese Knotweed Extracts
Due to its health-promoting properties, resveratrol is one of the most desirable compounds in many industries. Hence, this work focused on finding the conditions of its extraction from Japanese knotweed which could be used on an industrial scale to obtain extracts with the best antioxidant propertie...
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2025-07-01
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| author | Małgorzata Olszowy-Tomczyk Dorota Wianowska |
| author_facet | Małgorzata Olszowy-Tomczyk Dorota Wianowska |
| author_sort | Małgorzata Olszowy-Tomczyk |
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| description | Due to its health-promoting properties, resveratrol is one of the most desirable compounds in many industries. Hence, this work focused on finding the conditions of its extraction from Japanese knotweed which could be used on an industrial scale to obtain extracts with the best antioxidant properties. The contribution of polyphenolics to the activity of the obtained isolates was also assessed in this study. Ultrasound-assisted solvent extraction was used to prepare extracts in various solvents under conditions differing in extraction time, temperature, and ultrasound frequency. The extracts were tested for their ability to neutralize radicals and reduce metal ions. It was shown that although the best extractant was the same water–alcohol mixture, the optimal conditions for the extraction of resveratrol and polyphenols were different: 10 min, 50 °C and 80 kHz for resveratrol (for which the highest contents of resveratrol equals 0.91 mg/g was obtained) and 20 min, 25 °C and 37 kHz for polyphenolics (for which the total phenolic content equals 31.28 mg of gallic acid/g was determined) Under the latter conditions, one of the best antioxidant activities was also obtained. The results confirm that Japanese knotweed, despite its bad reputation in Europe as a very invasive species, can be used as a source of sought-after resveratrol and polyphenols. |
| format | Article |
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| language | English |
| publishDate | 2025-07-01 |
| publisher | MDPI AG |
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| spelling | doaj-art-01f8a5f97c9848fa92622c7fd87412d02025-07-25T13:12:11ZengMDPI AGApplied Sciences2076-34172025-07-011514772610.3390/app15147726Impact of Extraction Conditions on Resveratrol Content and Antioxidant Properties of Japanese Knotweed ExtractsMałgorzata Olszowy-Tomczyk0Dorota Wianowska1Department of Chromatography, Institute of Chemical Sciences, Faculty of Chemistry, Maria Curie-Skłodowska University in Lublin, Pl. Maria Curie-Skłodowska 3, 20-031 Lublin, PolandDepartment of Chromatography, Institute of Chemical Sciences, Faculty of Chemistry, Maria Curie-Skłodowska University in Lublin, Pl. Maria Curie-Skłodowska 3, 20-031 Lublin, PolandDue to its health-promoting properties, resveratrol is one of the most desirable compounds in many industries. Hence, this work focused on finding the conditions of its extraction from Japanese knotweed which could be used on an industrial scale to obtain extracts with the best antioxidant properties. The contribution of polyphenolics to the activity of the obtained isolates was also assessed in this study. Ultrasound-assisted solvent extraction was used to prepare extracts in various solvents under conditions differing in extraction time, temperature, and ultrasound frequency. The extracts were tested for their ability to neutralize radicals and reduce metal ions. It was shown that although the best extractant was the same water–alcohol mixture, the optimal conditions for the extraction of resveratrol and polyphenols were different: 10 min, 50 °C and 80 kHz for resveratrol (for which the highest contents of resveratrol equals 0.91 mg/g was obtained) and 20 min, 25 °C and 37 kHz for polyphenolics (for which the total phenolic content equals 31.28 mg of gallic acid/g was determined) Under the latter conditions, one of the best antioxidant activities was also obtained. The results confirm that Japanese knotweed, despite its bad reputation in Europe as a very invasive species, can be used as a source of sought-after resveratrol and polyphenols.https://www.mdpi.com/2076-3417/15/14/7726<i>Polygonum cuspidatum</i>resveratrolultrasound-assisted solvent extractionABTS DPPHCUPRACFRAP |
| spellingShingle | Małgorzata Olszowy-Tomczyk Dorota Wianowska Impact of Extraction Conditions on Resveratrol Content and Antioxidant Properties of Japanese Knotweed Extracts Applied Sciences <i>Polygonum cuspidatum</i> resveratrol ultrasound-assisted solvent extraction ABTS DPPH CUPRAC FRAP |
| title | Impact of Extraction Conditions on Resveratrol Content and Antioxidant Properties of Japanese Knotweed Extracts |
| title_full | Impact of Extraction Conditions on Resveratrol Content and Antioxidant Properties of Japanese Knotweed Extracts |
| title_fullStr | Impact of Extraction Conditions on Resveratrol Content and Antioxidant Properties of Japanese Knotweed Extracts |
| title_full_unstemmed | Impact of Extraction Conditions on Resveratrol Content and Antioxidant Properties of Japanese Knotweed Extracts |
| title_short | Impact of Extraction Conditions on Resveratrol Content and Antioxidant Properties of Japanese Knotweed Extracts |
| title_sort | impact of extraction conditions on resveratrol content and antioxidant properties of japanese knotweed extracts |
| topic | <i>Polygonum cuspidatum</i> resveratrol ultrasound-assisted solvent extraction ABTS DPPH CUPRAC FRAP |
| url | https://www.mdpi.com/2076-3417/15/14/7726 |
| work_keys_str_mv | AT małgorzataolszowytomczyk impactofextractionconditionsonresveratrolcontentandantioxidantpropertiesofjapaneseknotweedextracts AT dorotawianowska impactofextractionconditionsonresveratrolcontentandantioxidantpropertiesofjapaneseknotweedextracts |