Simultaneous transformation and extraction of resveratrol from Polygonum cuspidatum using acidic natural deep eutectic solvent was written by Wang, Jian-Dong;Fu, Li-Na;Wang, Li-Tao;Cai, Zi-Hui;Wang, Yan-Qiu;Yang, Qing;Fu, Yu-Jie. And the article was included in Industrial Crops and Products in 2021.Recommanded Product: (2S,3R,4S,5S,6R)-2-(3-Hydroxy-5-((E)-4-hydroxystyryl)phenoxy)-6-(hydroxymethyl)tetrahydro-2H-pyran-3,4,5-triol The following contents are mentioned in the article:
Resveratrol, as a natural antioxidant, has been studied widely for its antioxidant, anti-inflammatory, anti-apoptotic, and anticancer properties. In this study, a strategy was developed to transform and extract resveratrol from Polygonum cuspidatum on the basis of NADES (natural deep eutectic solvent). In the series of adjustments and optimizations by single-factor exptl., the optimum NADES system (choline chloride to oxalic acid was 1:1) and other exptl. conditions were determined, including water content of NADES, solid-liquid ratio, extraction time, extraction temperature and ultrasonic power. At the same time, RSM combined with BBD further optimized the exptl. process, the results obtained by RSM optimization showed that the resveratrol yield of 12.31 mg/g was achieved when solid-liquid ratio was 1:50, temperature was 75°C and time was 80 min. Meantime, the conversion efficiency of polydatin was 96.11% and the content of resveratrol increased 6-fold higher than that of untreated sample. The kinetic of extraction and thermodn. anal. were performed at different extraction temperatures to examine the temperature on the impact of the resveratrol extraction from P. cuspidatum. Et acetate was used for back extraction in order to achieve the recycling of solvent and the recovery of resveratrol from NADES. The results showed that Et acetate had a good extraction effect and NADES still had a high capacity to convert and extract resveratrol after three cycles. In addition, the extracts exhibited superior antioxidant activity with higher content of recovered resveratrol. This established process can therefore be used to extract and recover resveratrol from plants as an environmental, pollution-free alternative approach. This study involved multiple reactions and reactants, such as (2S,3R,4S,5S,6R)-2-(3-Hydroxy-5-((E)-4-hydroxystyryl)phenoxy)-6-(hydroxymethyl)tetrahydro-2H-pyran-3,4,5-triol (cas: 27208-80-6Recommanded Product: (2S,3R,4S,5S,6R)-2-(3-Hydroxy-5-((E)-4-hydroxystyryl)phenoxy)-6-(hydroxymethyl)tetrahydro-2H-pyran-3,4,5-triol).
(2S,3R,4S,5S,6R)-2-(3-Hydroxy-5-((E)-4-hydroxystyryl)phenoxy)-6-(hydroxymethyl)tetrahydro-2H-pyran-3,4,5-triol (cas: 27208-80-6) belongs to alcohols. Under appropriate conditions, inorganic acids also react with alcohols to form esters. To form these esters, a wide variety of specialized reagents and conditions can be used. A multistep synthesis may use Grignard-like reactions to form an alcohol with the desired carbon structure, followed by reactions to convert the hydroxyl group of the alcohol to the desired functionality.Recommanded Product: (2S,3R,4S,5S,6R)-2-(3-Hydroxy-5-((E)-4-hydroxystyryl)phenoxy)-6-(hydroxymethyl)tetrahydro-2H-pyran-3,4,5-triol
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