AI Article Synopsis
- Rattan tea is known for its medicinal properties, used historically to treat various health issues like inflammation and diabetes. This study focuses on a new, eco-friendly method to extract beneficial compounds from it.
- The optimal extraction conditions using Tween-80 as a solvent were found to be 6.8% concentration, 54°C temperature, and 28.8 minutes, leading to high levels of antioxidant activity measured by total phenolic content and ferric-reducing capacity.
- This surfactant-mediated, ultrasonic-assisted extraction proved to be more efficient, reducing both time and costs compared to traditional extraction methods like heat reflux and ultrasonic extraction with ethanol.
Article Abstract
Background: Rattan tea is a medicinal plant that has been used for many years for the treatment of inflammation, fatty liver, tumor, diabetes, and hyperlipidemia.
Objective: A green and novel approach based on surfactant-mediated, ultrasonic-assisted extraction (SM-UAE) was developed for the extraction of antioxidant polyphenols from Rattan tea. A nonionic surfactant Tween-80 was selected as extraction solvent. The antioxidant activity was measured by total phenolic content (TPC) and ferric-reducing/antioxidant capacity (FRAC) assay.
Materials And Methods: Optimization of extraction parameters including concentration of solvent, ultrasonic time, and temperature were investigated by response surface methodology. The antioxidant activity was measured by TPC and FRAC assay.
Results: The optimal extraction conditions were determined as 6.8% (v/v) of aqueous Tween-80, ultrasonic temperature of 54°C, and ultrasonic time of 28.8 min. Under these conditions, the highest TPC value of 360.4 mg gallic acid equivalent per gram of dry weight material (GAE/g DW) was recorded. Moreover, 6.8% (v/v) of aqueous Tween-80, ultrasonic temperature of 54.5°C, and ultrasonic time of 28.4 min were determined for the highest FRAC value of 478.2 μmol of Fe/g of weight material (μmol Fe/g DW). Compared with other methods, the TPC and FRAC values of 313.5 mg GAE/g DW and 389.6 μmol Fe/g DW were obtained by heat reflux extraction using ethanol as solvent, respectively, and 343.2 mg GAE/g DW and 450.1 μmol Fe/g DW were obtained by UAE using ethanol as solvent, respectively.
Conclusion: The application of SM-UAE markedly decreased extraction time or extraction cost and improved the extraction efficiency, compared with the other methods.
Summary: Surfactant-mediated ultrasonic-assisted extraction of antioxidant polyphenols from Response surface methodology used to optimize parameters and study combined effectsOptimized surfactant-mediated ultrasonic-assisted extraction process enhances the antioxidant phenolics extraction in less time. SM-UAE: Surfactant-mediated ultrasonic-assisted extraction; TPC: total phenolic content; FRAC: Ferric reducing antioxidant capacity; RSM: Response surface methodology; BBD: Box-Behnken design.
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|---|---|
| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC5551363 | PMC |
| http://dx.doi.org/10.4103/pm.pm_159_16 | DOI Listing |
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Article Synopsis
- Rattan tea is known for its medicinal properties, used historically to treat various health issues like inflammation and diabetes. This study focuses on a new, eco-friendly method to extract beneficial compounds from it.
- The optimal extraction conditions using Tween-80 as a solvent were found to be 6.8% concentration, 54°C temperature, and 28.8 minutes, leading to high levels of antioxidant activity measured by total phenolic content and ferric-reducing capacity.
- This surfactant-mediated, ultrasonic-assisted extraction proved to be more efficient, reducing both time and costs compared to traditional extraction methods like heat reflux and ultrasonic extraction with ethanol.
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December 2009
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