ISSN print edition: 0366-6352 ISSN electronic edition: 1336-9075 Registr. No.: MK SR 9/7 Published monthly

Ultrasonic-assisted extraction and enrichment of the flavonoids from Salicornia Europaea leaves using macroporous resins and response surface methodology

Xin-Hong Wang and Jing-Ping Wang

Jiangsu Provincial Key Laboratory of Coastal Wetland Bioresources and Environmental Protection, School of Chemistry and Environmental Engineering, Yancheng Teachers University, Yancheng, People’s Republic of China

E-mail: wangxhong1227@163.com

Received: 1 August 2022  Accepted: 2 January 2023

Abstract:

This study investigated an efficient method to extract flavonoids from Salicornia Europaea leaves with an ultrasonic-assisted extraction method in [C₄mim]Cl) aqueous solution and enrich flavonoids using macroporous adsorption resins. The parameters of ultrasonic performance were optimized by RSM, total extraction yield of total flavonoids reached 39.24 mg/g under ultrasonic temperature for 56 °C, ultrasonic time for 91 min, liquid–solid ratio for 25 mL/g and ultrasonic power for 207 W. In addition, the adsorption equilibrium capacities of total flavonoids on the D-101, AB-8 and DM-130 at 298 K were 86.32, 77.01 and 74.43 mg/g, respectively. Experimental kinetic results indicated a good fit with the pseudo-second-order model, whereas adsorption isotherms fitted well with the Freundlich isotherm equation. The calculated Gibbs free energy, enthalpy and entropy during adsorption process revealed spontaneous, endothermic, entropy-driven adsorption processes. Therefore, a comparison of the adsorption behaviors of three resins suggested that use of D-101 as a potential adsorbent was feasible for the adsorption and purification of total flavonoids from Salicornia Europaea leaves.

Keywords: Adsorption kinetic; Adsorption isotherm model; Macroporous resins; Ionic liquid; Response surface methodology; Ultrasonic-assisted method; Salicornia Europaea

Full paper is available at www.springerlink.com.

DOI: 10.1007/s11696-023-02665-y

Chemical Papers 77 (5) 2769–2781 (2023)