Extraction, Modification of <i>Radix Paeoniae Alba</i> Starch and Adsorption Application

Abstract Radix Paeoniae Alba is an important plant resource and valuable tonic in traditional Chinese medicine. The radix of Radix Paeoniae Alba is rich in starch. There are few reports of Radix Paeoniae Alba starch. In present study, the Radix Paeoniae Alba starch is extracted, citrate esterified starches are prepared, the starch‐based hydrogels are synthesized, and adsorptive properties are investigated. The investigation suggests that Radix Paeoniae Alba starch‐based adsorbent is promising as an efficient and sustainable adsorbent for copper ions and methylene blue removal; therefore, Radix Paeoniae Alba starch has an appealing application prospect in adsorption for scavenging metal ions and dyes from real complex waste liquid.