115 research outputs found
Preparation of bioimprinting cross-linked enzyme aggregates of phenylalanine ammonia lyase and it's partial properties
No full textPhenylalanine ammonia lyase (PAL) is a key enzyme for production of L-phenylalanine. Currently, PAL is mainly obtained from Rhodotorula PAL However, Rhodotorula PAL exhibits poor stability, which limits its industrial application. In this study, bioimprinting cross-linked enzyme aggregates of PAL (PAL-iCLEAs) is developed by combining cross-linked enzyme aggregates technology and imprinted enzyme method. The most optimal imprinting molecule substrate is screened. Moreover, some characteristics of the PAL-iCLEAs are examined. The results show that the most suitable substrates for preparing PAL-iCLEAs is tran-cinnamic acid. The optimal temperature and pH was 50 ℃ and 10.5, respectively. In addition, PAL-iCLEAs shows good reusability, the recovery of PAL activity still remained 32% after reusing 9 times
4.8-Gbit/s broadband orbital angular momentum and polarization multiplexing at radio frequency
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OAM-based communication channel using delay in space: Helicoidal array and crossed array
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