the low solubility in traditional solvents limits its utilization. The dissolution process of penicillin mycelium was investigated using ionic liquids (ILs) as solvent. Quantitative correlation of solubility and ILs structure and dissolution mechanism were determined. About 91.45% of penicillin mycelium was dissolved in 1-butyl-3-methylimidazolium acetate ([Bmim] Ac) under the condition of 120.0℃ and[Bmim]Ac/mycelium (m/m) ratio of 3.90:1. Synergistic effect of ILs and DMSO was confirmed with the DMSO/[Bmim] Ac (v/m) ratio in the range of 0.0-1.0. At 25.0℃
the dissolution of penicillin mycelium increased from 69.74% to 94.50%
with the ratio of DMSO to[Bmim] Ac (v/m) as 1:1. The room temperature dissolution of mycelium provides a novel and energy-saving process for its high-valued utilization. The NMR and FT-IR spectra showed that hydrogen bonds are the dominant driving force for the dissolution in ILs. Quantitative study on the effects of anions and cations of ILs on dissolution using Kamlet-Taft model showed that there was a linearly positive correlation between solubility of penicillin mycelium and β parameter of the ILs. The solubility of mycelium increased with increasing hydrogen bond accepting ability of anions and donating ability of cations.
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相关作者
Qi Yabing
Zhao Chumeng
Yuan Tian
Honghua Zhang
Yueyang Qiao
Han Yang
Yanrong Liu
Xiaoyan Ji
相关机构
School of Chemistry and Chemical Engineering, Xi'an University of Architecture and Technology
CAS Key Laboratory of Green Process and Engineering, State Key Laboratory of Mesoscience and Engineering, Beijing Key Laboratory of Ionic Liquids Clean Process, Institute of Process Engineering, Chinese Academy of Sciences
Longzihu New Energy Laboratory, Zhengzhou Institute of Emerging Industrial Technology, Henan University
Energy Engineering, Division of Energy Science, Lule? University of Technology, Lule
School of Computer and Software, Shenzhen Institute of Information Technology