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Effect of β-cyclodextrin complexation on solubility and enzymatic hydrolysis rate of icariin
OBJECTIVE: The aim of this work was to investigate the effect of β-cyclodextrin complexation on the solubility and hydrolysis rate of icariin. MATERIAL AND METHODS: The inclusion complex of icariin at the molar ratio of 1:1 was obtained by the dropping method and was characterized by differential sc...
Autores principales: | , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Medknow Publications & Media Pvt Ltd
2013
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3633278/ https://www.ncbi.nlm.nih.gov/pubmed/23633863 http://dx.doi.org/10.4103/0976-9668.107291 |
Sumario: | OBJECTIVE: The aim of this work was to investigate the effect of β-cyclodextrin complexation on the solubility and hydrolysis rate of icariin. MATERIAL AND METHODS: The inclusion complex of icariin at the molar ratio of 1:1 was obtained by the dropping method and was characterized by differential scanning calorimetry. The solubility of icariin complex in water at 37°C was 36 times greater than that of free icariin. Enzymatic hydrolysis conditions were tested for the bioconversion of icariin by mono-factor experimental design. METHODS: The inclusion complex of icariin at the molar ratio of 1:1 was obtained by the dropping method and was characterized by differential scanning calorimetry. The solubility of icariin complex in water at 37°C was 36 times greater than that of free icariin. Enzymatic hydrolysis conditions were tested for the bioconversion of icariin by mono-factor experimental design. RESULTS: The enzymatic hydrolysis experiment showed that icariin can be transformed into baohuoside I. The optimum conditions determined were as follows: pH 5.0, 50°C, the ratio of cellulase/substrate (0.6), the concentration of icariin 20 mg/ml, and reaction time 12 h. Under these enzymatic conditions, 98.2% transforming rate of baohuoside I from icariin in inclusion complexes was obtained. CONCLUSION: The aqueous solubility and enzymatic hydrolysis rate of icariin were improved owing to the inclusion complexation. |
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