文献类型： 外文期刊

作者： Niu, H. X. ¹ ; Chang, J. ¹ ; Jia, Y. D. ² ;

作者机构： 1.Inner Mongolia Univ Nationalities, Sch Anim Sci & Technol, Tongliao 028042, Peoples R China

2.Chinese Acad Fishery Sci, Qingdao Key Lab Marine Fish Breeding & Biotechnol, Yellow Sea Fisheries Res Inst, Qingdao 266071, Peoples R China

关键词： Microencapsulation;Crystalline methionine;Spray-drying;Gelatine;Sodium alginate

期刊名称：MATERIALS RESEARCH INNOVATIONS （ 影响因子：0.83； 五年影响因子：0.62 ）

ISSN： 1432-8917

年卷期： 2015 年 19 卷

页码：

收录情况： SCI

摘要： In the present study, a central composite rotatable design was used to optimise a microencapsulation process enclosing methionine with gelatine and sodium alginate by spraydrying. The results showed that the highest yield (92.2%) and efficiency (86.7%) of methionine microencapsulation were obtained, when the gelatine solution (40 g L-1)/sodium alginate solution (20 g L-1) ratio was 1 : 1, the methionine content was 15% and the feed speed was 35 mL min(-1). In addition, the spray-dried microcapsules had a regular spherical shape and the crystalline methionine particles were enclosed by a wall system consisting of gelatine and sodium alginate. In vitro release study demonstrated that microcapsules could regulate methionine release and stimulate synchronous absorption of other amino acids to synthesise proteins. These observations suggest that methionine microencapsulation can be used to enhance the utilisation of amino acids and improve the application of methionine in aquaculture feed industry.