| 摘要: |
| 以高压均质为乳化方式,采用细乳液交联法合成淀粉纳米微球。对W/O细乳液制备条件的研究结果表明:Span-80与Tween-80质量比为84:16,淀粉溶液中NaCl与H2O质量比为6:100时可制得圆整性和分散性较好的粗乳液;复合乳化剂与环己烷的质量体积比为0.04 ~0.08 g/mL时,细乳液粒径和多分散系数(PDI)变化不明显;随着均质压力的提高,细乳液粒径和PDI逐渐减小;随着均质次数的增加,细乳液粒径和PDI先是逐渐减小,均质5次后变化趋于平缓。以环氧氯丙烷为交联剂,成功制得了粒径约50~100 nm淀粉纳米微球。 |
| 关键词: 淀粉 纳米微球 高压均质 细乳液 交联 |
| DOI：10.11841/j.issn.1007-4333.2012.02.025 |
| 投稿时间：2011-09-28 |
| 基金项目:广西科技攻关项目(桂科攻11107008-7,桂科攻1140001-14); 广西自然科学基金项目(桂科自0991006Z); 广西科学院基本科研业务费资助项目(10YJ25SW02,10YJ25SW03) |
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| Preparation of W/O miniemulsion and synthesis of starch nanoparticles |
|
LI Bing-zheng1,2, MAO Zhi-huai1
|
| (1.College of Engineering, China Agricultural University, Beijing 100083, China;2.State Key Laboratory of Non-Food Biomass and Enzyme Technology/National Engineering Research Center for Non-food Biorefinery/Guangxi Key Laboratory of Biorefinery, Guangxi Academy of Sciences, Nanning 530007, China) |
| Abstract: |
| Starch nanoparticles were prepared by water-in-oil (W/O) miniemulsion-crosslinking method assisted by high-pressure homogenization.The preparation of W/O miniemulsion was study and the results indicated that coarse emulsion of spherical shape with good dispersibility could be prepared at 84:16 mass ratio of Span-80 to Tween-80 and 6:100 mass ratio of NaCl to H2O.The Z-average diameter and polydispersity index (PDI) of W/O miniemulsion changed slightly when the mass-to-volume ratio of compound emulsifier to cyclohexane ranged from 0.04 to 0.08 g/mL,but declined gradually along with the increase in the homogenization pressure.With the increase in homogenization cycle,the Z-average diameter and PDI decreased gradually in the beginning and tended to be stable after 5 cycles.It is demonstrated that starch nanoparticles of 50-100 nm can be successfully synthesized in W/O miniemulsion using epichlorohydrin as crosslinking agents. |
| Key words: starch nanoparticle high-pressure homogenization miniemulsion crosslinking |
