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当前位置: 首页 > 文章 > 亚硒酸钠/海藻酸钠微胶囊的制备及表征 广东农业科学 2018 (12) 118-124
Position: Home > Articles > Preparation and characterization of sodium selenite/sodium alginate microcapsules Guangdong Agricultural Sciences 2018 (12) 118-124

亚硒酸钠/海藻酸钠微胶囊的制备及表征

作  者：
杨安源;胡恩烨;周红军;周新华;舒绪刚
单  位：
仲恺农业工程学院化学化工学院;广东省普通高校农用绿色精细化学品重点实验室
关键词：
亚硒酸钠;微胶囊;海藻酸钠;内源乳化法;工艺优化
摘  要：
微胶囊化包埋可减缓亚硒酸钠(Na_2SeO_3)的氧化速度。以海藻酸钠(sodiumalginate,SA)为壁材、纳米碳酸钙(Nano-CaCO_3)为交联剂,采用内源乳化法制备亚硒酸钠/海藻酸钠微胶囊(SSSAM)。借助FTIR和XRD表征,对SSSAM的结构进行分析。同时,采用单因素法,以载药率(LC)和包封率(EE)为指标,优化SSSAM的制备工艺。结果表明,采用内源乳化法成功制备了亚硒酸钠/海藻酸钠微胶囊,Na_2SeO_3以非晶态形式包埋于SSSAM中。制备工艺优化条件为Nano-CaCO_3质量比为1/2、油水体积比为4:1、Span80质量分数为3%,乳化40min,交联15min。在此条件下,SSSAM的LC和EE分别为16.2%和52.7%。
译  名：
Preparation and characterization of sodium selenite/sodium alginate microcapsules
作  者：
YANG An-yuan;HU En-ye;ZHOU Hong-jun;ZHOU Xin-hua;SHU Xu-gang;College of Chemistry and Chemical Engineering,Zhongkai University of Agriculture and Engineering;Key Laboratory of Agricultural Green Fine Chemicals of Guangdong Higher Education Institution;
单  位：
YANG An-yuan%HU En-ye%ZHOU Hong-jun%ZHOU Xin-hua%SHU Xu-gang%College of Chemistry and Chemical Engineering,Zhongkai University of Agriculture and Engineering%Key Laboratory of Agricultural Green Fine Chemicals of Guangdong Higher Education Institution
关键词：
sodium selenite;;microcapsules;;sodium alginate;;emulsification/internal gelation;;process optimization
摘  要：
Microencapsulation was an effective method to prevent the sodium selenite(Na_2SeO_3) from being oxidized by environmental factors. By using sodium alginate as the shell, Nano-calcium carbonate as the cross linker, Na_2SeO_3 was encapsulated by emulsification/internal gelation to obtain sodium selenite/sodium alginate microcapsules(SSSAM). The composition and structure were characterized by Fourier infrared(FTIR) and X-ray diffraction(XRD), respectively. The result showed that Na_2SeO_3 was embedded into SSSAM in the form of amorphous state. When the mass ratio of Nano-CaCO_3 was 1/2, the oil-water volume ratio was 4∶1, Span 80 mass fraction 3%, emulsification for 40 min, cross-linking for 15 min, the loading content(LC) of Na_2SeO_3 and encapsulation efficiency(EE) of SSSAM were 16.2% and 52.7%, respectively.

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