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Embedding inulin fructotransferase from Arthrobacter aurescens into novel curdlan-based mesoporous silica microspheres for efficient production of Difructose Anhydride III.

08:00 EDT 4th July 2019 | BioPortfolio

Summary of "Embedding inulin fructotransferase from Arthrobacter aurescens into novel curdlan-based mesoporous silica microspheres for efficient production of Difructose Anhydride III."

A novel strategy was used to produce inulin fructotransferase from Arthrobacter aurescens (Aa-IFTase) embedded in curdlan-based mesoporous silica microspheres (CMSiM-Aa-IFTase). The CMSiM-Aa-IFTase was constructed by co-entrapping cross-linked Aa-IFTase aggregates and curdlan into biomemitic silica, and the curdlan was subsequently removed by digestion with endo-β-1,3-glucanase. During this process, the curdlan served as an agent to introduce pores in silica microspheres. The resulting CMSiM-Aa-IFTase showed higher stability and activity than free Aa-IFTase and mCLEAs-Aa-IFTase (modified cross-linked enzyme aggregates with Aa-IFTase). Furthermore, the CMSiM-Aa-IFTase displayed good reusability and excellent storage stability. The excellent catalytic performances were due to the combinational structure from the cross-linked enzyme aggregates and hard shell of mesoporous silica microspheres, which might decrease the negative interaction between support and enzyme, and improve the mechanical properties. The CMSiM-Aa-IFTase was applicable for efficient production of Difructose Anhydride III (DFA III), and this approach should be highly valuable for preparing various mesoporous composites for catalysis.

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This article was published in the following journal.

Name: Food chemistry
ISSN: 1873-7072
Pages: 125128

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