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Anming Wang,Xinxin Chen,Jianyun Yu,Ningning Li,Huimin Li,Youcheng Yin,Tian Xie,Stephen Gang Wu 한국공업화학회 2020 Journal of Industrial and Engineering Chemistry Vol.89 No.-
To prepare enzyme@Ca3(PO4)2 for environmentally friendly biocatalysis, Ca2+ and (PO4)3 were extractedfrom bone waste by acidification. In the nearly neutralizedfiltrate, the Ca2+ and (PO4)3 formed aCa3(PO4)2 sediment that crystallized on a template of Thermomyces lanuginosus lipase (TLL) at 4 ℃ for24 h, producing enzyme@Ca3(PO4)2-Bone hybrid nanoflowers (hNFs). Clindamycin palmitate wasefficiently synthesized by transfer of a palmityl moiety from vinyl palmitate to clindamycin free baseusing these hNFs as a biocatalyst. At 30 ℃ in petroleum ether (PE) as the solvent, the yield of the TLL hNFcatalyzedreaction was as high as 70.0%. Even at a high temperature (80 ℃), the yield in the hNF-catalyzedreaction was still 52.6%, but no product was detected when using free lipase as the catalyst. Moreover, thehNFs retained 90% of their initial activity after 10 cycles (120 h, 12 h per cycle). This green and sustainablemethod that utilizes bone waste from food production as the raw source of the inorganic component wasfacile and efficient, and the system may also be applicable for preparing other enzyme@Ca3(PO4)2 hNFsfor industrial applications.