中国畜牧兽医 ›› 2020, Vol. 47 ›› Issue (9): 2799-2807.doi: 10.16431/j.cnki.1671-7236.2020.09.012

• 动物营养与饲料科学 • 上一篇    下一篇

果胶/壳聚糖合生元微胶囊制备及其体外人工胃肠道耐受性和储藏性能研究

崔乃元1, 高青山1,2, 严昌国1,2, 崔莲花1,2   

  1. 1. 延边大学农学院动物科学系, 延吉 133002;
    2. 东北寒区肉牛科技创新教育部工程研究中心, 延边大学, 延吉 133002
  • 收稿日期:2020-03-29 出版日期:2020-09-20 发布日期:2020-09-16
  • 通讯作者: 崔莲花 E-mail:cuilianhua@ybu.edu.cn
  • 作者简介:崔乃元(1994-),女,吉林四平人,硕士生,研究方向:动物营养与饲料科学,E-mail:1670777977@qq.com
  • 基金资助:
    吉林省教育厅"十三五"科学技术项目(JJKH20191133KJ);高等学校学科创新引智计划(D20034)

Preparation of Pectin/Chitosan Synbiotic Microcapsules and Its Study on Simulated Gastrointestinal Environments and Storage Stability

CUI Naiyuan1, GAO Qingshan1,2, YAN Changguo1,2, CUI Lianhua1,2   

  1. 1. Department of Animal Science, College of Agriculture Science, Yanbian University, Yanji 133002, China;
    2. Engineering Research Center of North-East Cold Region Beef Cattle Science & Technology Innovation, Ministry of Education, Yanbian University, Yanji 133002, China
  • Received:2020-03-29 Online:2020-09-20 Published:2020-09-16

摘要: 本研究以果胶、壳聚糖为壁材,乳酸片球菌和菊粉为壁芯,运用挤压法制备果胶/壳聚糖合生元微胶囊(PC(PA-I)MCs),并以包埋率、颗粒形态、机械强度、体外胃肠道耐受性及贮藏性能等为考核指标,研究合生元微胶囊包被工艺。试验分为3组,分别为游离状态的乳酸片球菌组(PA)、单独包埋乳酸片球菌制得的微胶囊组(PC(PA)MCs),菊粉与乳酸片球菌一同包埋制得的合生元微胶囊组(PC(PA-I)MCs)。结果表明,当果胶的质量浓度为5 g/100 mL、菊粉添加量为25 mg/mL、壳聚糖质量浓度为0.8 g/100 mL时,PC(PA-I)MCs组的微胶囊外观、粒径、机械强度和包埋率较好;通过体外人工胃肠道耐受性试验发现,PC(PA-I)MCs组在体外人工胃液中比较稳定(P<0.05),在体外人工肠液中30 min开始迅速释放,到2 h后微胶囊基本完全崩解。通过4周的储藏试验比较发现,PA组乳酸片球菌在冷藏和常温下,菌体存活率下降明显,而添加菊粉的PC(PA-I)MCs组菌体存活率下降幅度较小,且PC(PA-I)MCs组的菌体存活率高于PC(PA)MCs组(P>0.05);室温条件下PC(PA-I)MCs组的菌体存活率高于PC(PA)MCs组(P>0.05)。综上所述,以菊粉为益生元的果胶/壳聚糖微胶囊对乳酸片球菌有较好的包埋效果。

关键词: 乳酸片球菌; 微胶囊; 胃肠道耐受性; 储藏性能

Abstract: Pediococcus acidilactici and inulin were used as wall cores,with pectin and chitosan as the shell material.The conditions of microencapsulation were optimized by analyzing the embedding rate,particle morphology,the mechanical strength,gastrointestinal tolerance in vitro and storage performance.The experimental group was divided into three groups:Free Pediococcus acidilactici group (PA),microcapsule group made by embedding Pediococcus acidilactici alone (PC(PA)MCs),synbiotic microcapsule group made by embedding inulin and Pediococcus acidilactici (PC(PA-I)MCs).The results showed that the appearance,particle size,mechanical strength and embedding rate of microcapsules were better when the mass concentration of pectin was 5 g/100 mL,the content of inulin was 25 mg/mL and the mass concentration of chitosan was 0.8 g/100 mL.Through the gastrointestinal tolerance test in vitro, it was found that PC(PA-I)MCs group was relatively stable in the artificial gastric juice in vitro (P<0.05).At the same time,it began to release rapidly in the artificial intestinal fluid in vitro at 30 min and it was almost completely disintegrated after 2 h.It was found that the cell survival rate of PA group decreased significantly at cold and room temperature through the storage test for 4 weeks.While the cell survival rate of PC(PA-I)MCs group decreased slightly.And the cell survival rate of PC(PA-I)MCs group was higher than that of PC(PA)MCs group (P>0.05).At room temperature,the cell survival rate of PC(PA-I)MCs group was higher than that of PC(PA)MCs group (P>0.05).In summary,pectin/chitosan microcapsules with inulin as probiotics had a better embedding effect on Pediococcus acidilactici.

Key words: Pediococcus acidilacticis; microcapsules; gastrointestinal tolerance; storage stability

中图分类号: