Effective biosorption of patulin from apple juice by cross-linked xanthated chitosan resin

Synthesis of triethylene tetramine–modified water‐insoluble corn flour caged in magnetic chitosan resin and its adsorption application for removal of patulin from apple juice

“…Meanwhile, the same trend was shown at 1,646 cm −1 , and the peak at 1,581 cm −1 disappeared, which corresponded to N–H bond. These features reveal that patulin may coordinate with ‐NH 2 and ‐OH groups of TETA‐WICF/MCR and are consistent with previous literature (Peng et al., 2016; Wang et al., 2015).…”

“…According to experimental results of Peng et al. (2016), the adsorption capacity of cross‐linked xanthated chitosan resin for patulin increased with the increase of temperature, and that due to the enhanced chemical adsorption as the temperature increased.…”

“…The results suggested that pseudo‐second‐order model may be relatively more suitable to predict the patulin adsorption onto TETA‐WICF/MCR, and the chemical adsorption was the main rate‐limiting step during the patulin removal process. In addition, the adsorption behavior could be related to the valency forces through sharing of electrons between patulin and TETA‐WICF/MCR, via which the patulin may form a complex with active groups of TETA‐WICF/MCR (Peng et al., 2016). Also, k 2 value obtained from the pseudo‐second‐order model decreased with the increase of the initial patulin concentration, which suggested that the adsorption process could be independent of initial patulin concentration (Shu, Chang, & Huang, 2016).…”

“…Among them, adsorption has been of interest to the juice industry in the last few years due to its obvious advantages of high efficiency, cost effective, simple operation, and nonsecondary pollution (Gong et al., 2015; Wang, Zhang, & Liu, 2017). A variety of adsorbents, such as Ca‐alginate–activated carbon beads, inactivated microorganism cell, thiourea‐modified chitosan resin, macroporous resin, magnetic chitosan, cross‐linked xanthated chitosan resin, and so forth, have been applied for patulin removal from juice‐pH simulation aqueous and contaminated fruit juices (Luo, Zhou, & Yue, 2017; Peng et al., 2016; Sajid, Mehmood, Yuan, & Yue, 2019; Wang, Lei, Yue, & Gao, 2015; Yue et al., 2013). In our previous work, water‐insoluble corn flour (WICF) as a biosorbent was prepared to remove patulin with varying degrees both in juice‐pH simulation aqueous and apple juice (Guo et al., 2018).…”

Purification of polyphenols from kiwi fruit peel extracts using macroporous resins and high‐performance liquid chromatography analysis

“…The correlation coefficients (R 2 ) of the adsorption data simulated by the Freundlich model were higher than those of Langmuir model, which suggested that the Freundlich model provided a better fit for the experimental equilibrium adsorption data. In the case of the Freundlich model, the adsorption of the polyphenols onto the NKA-II resin was considered to occur via multilayer adsorption as well as surface heterogeneity (Peng et al, 2016). Generally, the value of the constant n indicates the adsorption intensity, and n values between 1 and 10 suggest beneficial adsorption .…”