文章摘要
杨安源,周红军,周新华,舒绪刚.饲用碘酸钙/海藻酸钠凝胶微球及其稳定性[J].精细化工,2019,36(1):
饲用碘酸钙/海藻酸钠凝胶微球及其稳定性
Preparation and stability of calcium iodate/sodium alginate microspheres for feeds
投稿时间:2018-03-14  修订日期:2018-08-13
DOI:
中文关键词: 碘酸钙  海藻酸钠  微球  稳定性
英文关键词: calcium iodate  sodium alginate  microsphere  stability
基金项目:广州市科技计划项目(201604020054);广东省科技计划项目(2017A040405055)
作者单位E-mail
杨安源 仲恺农业工程学院 744942539@qq.com 
周红军 仲恺农业工程学院  
周新华 仲恺农业工程学院 cexinhuazhou@163.com 
舒绪刚 仲恺农业工程学院  
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中文摘要:
      为隔绝饲用碘酸钙在贮存、使用过程中与还原性物质,如维生素c (VC)的反应。以碘酸钙(Ca(IO3)2)为芯材,海藻酸钠(SA)为壁材,纳米碳酸钙(Nano-CaCO3)为交联钙源,采用改良的内源乳化法制备了碘酸钙/海藻酸钠凝胶微球(Ca(IO3)2/SAMS)。利用FTIR、SEM、TG、XRD对Ca(IO3)2/SAMS进行了表征,同时测定了其在VC溶液中的稳定性,探讨了Ca(IO3)2/SAMS形成机制。结果表明,Ca(IO3)2/SAMS呈球形,粒径约为20~40 μm,其表面有大量碘酸钙晶体。Ca(IO3)2和Ca(IO3)2/SAMS在VC溶液中VC分解50%用时(t50%)分别为54.8 min和78.3 min,Ca(IO3)2在饲料中的稳定性得到明显提升。
英文摘要:
      To avoid the reaction of calcium iodate with reducing substances such as vitamin c (VC) during storage and use in feeds. The microspheres of calcium iodate (Ca(IO3)2/SAMS) were prepared by improved emulsification/internal gelation with calcium iodate as core material, sodium alginate as wall material and Nano-calcium carbonate as cross linker. The Ca(IO3)2/SAMS were characterized by FTIR, SEM, TG and XRD, stability of VC solution of Ca(IO3)2/SAMS were also systematically measured. The embedding mechanism of Ca(IO3)2/SAMS were proposed according to various analysis results. The results showed that Ca(IO3)2/SAMS were spherical with a particle size of about 20-40 μm and a large number of calcium iodate were in crystalline form on the surface of Ca(IO3)2/SAMS. The half decomposition rate time (t50%) of vitamin C was 54.8 min and 78.3 min by the calcium iodate or Ca(IO3)2/SAMS, respectively. It were demonstrated that the stability of Ca(IO3)2 in feeds were improved significantly.
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