Peanut sprouts are a functional food material rich in phytochemicals, including trans-resveratrol. This study aimed to optimize the recovery of trans-resveratrol from peanut sprouts using a combination of peanut varieties and sawdust medium through accelerated solvent extraction (ASE) and the response surface method (RSM). We also aimed to determine the antioxidant activity of this trans-resveratrol extract. Optimal fermentation periods of sawdust and peanut variety for cultivating peanut sprouts were determined on the basis of trans-resveratrol content via high-performance liquid chromatography. The extraction variables temperature, static time, and ethanol concentration were used to create a 20-sample set fit to a second-order polynomial equation through multiple regression analysis (R = 0.8787, P < 0.01). Trans-resveratrol content (19.62 ± 2.33 µg/g) peaked in the Palgwang variety cultured in sawdust medium fermented for 45 days. Optimal conditions for ASE were determined regarding the extraction temperature (90.29 °C), static time (3.95 min), and solvent (81.54% EtOH/water), and the predicted trans-resveratrol content under optimal conditions was 30.23 µg/g. Sawdust medium was more effective in increasing the trans-resveratrol content than conventional hydroponics, and the optimized process of combining fermented sawdust cultivation for harvesting peanut sprouts with ASE has potential as an efficient method of obtaining mass quantities of trans-resveratrol from peanut sprouts with improved nutritional and functional properties. PRACTICAL APPLICATION: This study showed that sawdust medium is more effective than hydroponics in increasing the trans-resveratrol content in peanut sprouts. The recovery of trans-resveratrol from peanut sprouts and its antioxidant activity were optimized via accelerated solvent extraction (ASE) and the response surface methodology (RSM). The optimized process of combining fermented sawdust cultivation for harvesting peanut sprouts with ASE potentially provides an efficient method to obtain mass quantities of trans-resveratrol from peanut sprouts with improved nutritional and functional properties.
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