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Laccase is a multicopper oxidoreductase enzyme that can oxidize organics such as phenolic compounds. Laccases appear to be unstable at room temperature, and their conformation often changes in a strongly acidic or alkaline environment, making them less effective. Therefore, rationally linking enzymes with supports can effectively improve the stability and reusability of native enzymes and add important industrial value. However, in the process of immobilization, many factors may lead to a decrease in enzymatic activity. Therefore, the selection of a suitable support can ensure the activity and economic utilization of immobilized catalysts. Metal-organic frameworks (MOFs) are porous and simple hybrid support materials. Moreover, the characteristics of the metal ion ligand of MOFs can enable a potential synergistic effect with the metal ions of the active center of metalloenzymes, enhancing the catalytic activity of such enzymes. Therefore, in addition to summarizing the biological characteristics and enzymatic properties of laccase, this article reviews laccase immobilization using MOF supports, as well as the application prospects of immobilized laccase in many fields. [ABSTRACT FROM AUTHOR]

The ZnO/Co/C composite materials, consisting of ZnO and ferromagnetic Co embedded in a carbon skeleton were successfully synthesized through the pyrolysis of a ZnCo-MOF precursor. The evolution of phase and microstructure was systematically investigated. The results indicate that the EMW absorption performance is dependent on the degree of graphitization and phase compositions. When the precursor pyrolysis temperature is 800 ℃, the ZnO/Co/C composites benefiting from the synergistic effect of constituents and microstructure demonstrate exceptional EMW absorption performance, with a minimum reflection loss (RLmin) of -52.2 dB at 11.5 GHz and a sample thickness of 2.23 mm. The widest effective absorption bandwidth (EAB) harvests 6.7 GHz (11.3-18 GHz) with a sample thickness of 2 mm, encompassing the entire Ku band. Herein, this study shed light on exploring high-efficiency MOF-based EMW absorption materials with rational design of components and structure, and the as-prepared ZnO/Co/C composites are potential candidates for EMW absorption applications. [ABSTRACT FROM AUTHOR]

Armillaria is one of the most common diseases underlying chronic root rot in woody plants. Although there is no particularly effective way to prevent it, soil disinfection is a common effective protective measure. However, Armillaria itself has important medicinal value and is a symbiotic fungus in the cultivation of Gastrodia elata and Polyporus umbellatus. Therefore, researching Armillaria is of great practical significance. In this review, the biological characteristics, cultivation methods, chemical components, food and medicinal value and efficacy of Armillaria were all reviewed, and its development and utilization direction were analyzed and discussed. [ABSTRACT FROM AUTHOR]