| 杨安源 1
，胡恩烨 1
，周红军1，2，周新华 1，2，舒绪刚 1，2.亚硒酸钠 / 海藻酸钠微胶囊的制备及表征[J].广东农业科学,2018,45(12):118-124 |
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亚硒酸钠 / 海藻酸钠微胶囊的制备及表征 |
| Preparation and characterization of sodium selenite/sodium alginate microcapsules |
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| DOI：10.16768/j.issn.1004-874X.2018.12.020 |
| 中文关键词: 亚硒酸钠 微胶囊 海藻酸钠 内源乳化法 工艺优化 |
| 英文关键词: sodium selenite microcapsules sodium alginate emulsification/internal gelation process
optimization |
| 基金项目:广州市科技计划项目(201604020054)；广东省科技计划项目（2017A040405055） |
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| 中文摘要: |
| 微胶囊化包埋可减缓亚硒酸钠（Na2SeO3）的氧化速度。以海藻酸钠（sodium alginate, SA）为
壁材、纳米碳酸钙（Nano-CaCO3）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，
Na2SeO3 以非晶态形式包埋于 SSSAM 中。制备工艺优化条件为 Nano-CaCO3 质量比为 1/2、油水体积比为
4:1、Span 80 质量分数为 3%，乳化 40 min，交联 15 min。在此条件下，SSSAM 的 LC 和 EE 分别为 16.2%
和 52.7%。 |
| 英文摘要: |
| Microencapsulation was an effective method to prevent the sodium selenite (Na2SeO3) from being
oxidized by environmental factors. By using sodium alginate as the shell, Nano-calcium carbonate as the cross linker,
Na2SeO3 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 Na2SeO3 was embedded into SSSAM in the form of amorphous state. When the
mass ratio of Nano-CaCO3 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 Na2SeO3 and encapsulation efficiency (EE) of SSSAM
were 16.2% and 52.7%, respectively. |
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