Construction of Cyclodextrin-Based Covalent Organic Frameworks for Efficient Encapsulation of Menthol.

The application of flavoring ingredients like menthol in the food industry is hindered by their high volatility and poor thermal stability, which lead to significant losses during processing and storage. Encapsulation of flavors into porous materials to obtain inclusion complexes (ICs) has proved to be an efficient strategy. In the present study, we synthesized a series of relatively food-safe three-dimensional anionic cyclodextrin-based covalent organic frameworks (CD-COFs) with spiroborate linkages using a facile microwave-assisted method.

Adsorption of Ni in aqueous solution by KMnO modified biomass: investigation on adsorption kinetics and modification mechanism.

In this study, KMnO modification was proved to effectively increase the Ni adsorption capacity of biomass. In order to clarify the KMnO modification mechanism, the Ni adsorption characteristics of KMnO modified corncob (PPCB) under adsorption time, pH and Ni concentration were studied. The results showed that the adsorption was the pseudo second-order kinetic process, indicating that chemisorption was the dominated process, which followed the Langmuir isotherm model and the highest Ni adsorption capacity of PPCB reached 35.