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A comparative study on the adsorption and desorption characteristics of flavonoids from honey by six resins
Cheng Lv1, Jie Yang2, Rui Liu3
1College of Food Science and Technology, Huazhong Agricultural University, Wuhan, China.
Abstract:
The adsorption and desorption characteristics of six different resins (NKA-9, XAD-2, AB-8, D3520, DM-130 and Polyamide) were investigated, in order to screen one resin compared favorably with XAD-2 resin for the purification of flavonoids from honey. The adsorption capacity was XAD-2 > AB-8 > DM-130 > D3520 > NKA-9 > Polyamide, and the desorption ratios of XAD-2, AB-8 and DM-130 had no significant differences, which was higher than those of D3520, NKA-9 and Polyamide. By analyzing kinetic adsorption using pseudo-first-order, pseudo-second-order and particle diffusion kinetics models combined with kinetic desorption, the adsorption and desorption behavior of AB-8 was similar to that of XAD-2, which was excellent than other four resins. The optimal temperature for XAD-2 and AB-8 to adsorb flavonoids was 25 °C under the analysis of Langmuir and Freundlich isotherms models. AB-8 resin offers an efficient and economical choice for the purification of flavonoids from honey.
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