粪微生态肠溶胶囊的制备及其质量控制

Producing and quality control of fecal-derived microbiota enteric capsules

目的：初步探讨制备粪微生态肠溶胶囊的可行性及其质量控制。方法采用双层肠溶胶囊制备法灌装分离获得的粪菌液。采用平皿法对新配制的含甘油粪菌液、-80℃下保存72 h 后的不含甘油粪菌液、含甘油粪菌液分别进行菌落数测定，观察其冷冻稳定性。用亚甲蓝作为标志物，对肠溶胶囊的耐酸力、释放度等进行评价。采用 t 检验进行统计学分析。结果粪微生态双层肠溶胶囊的制备方法简单易行。每种粪菌液各获得了12个平皿法测定数据，新配制含甘油粪菌液在平皿中形成的菌落数[（5.08±1.37）×107菌落形成单位（cfu）／mL]显著高于-80℃冷冻72 h 的未加甘油粪菌液[（1.73±0.64）×107 cfu／mL]，差异有统计学意义（t ＝7.621，P ＜0.01），冷冻后的含甘油粪菌液形成的菌落数[（4.67±1.56）×107 cfu／mL]与新配制含甘油粪菌液相比，差异无统计学意义（t ＝0.694，P ＝0.495）。运用含亚甲蓝粪菌液建立回归方程，在0.5～8.0μg／mL浓度范围内线性关系良好，制作出3批亚甲蓝粪菌液胶囊，耐酸力分别为96.0%、99.1%和95.5%，释放度分别为88.6%、95.1%和86.5%，符合中华人民共和国药典对肠溶胶囊的质量要求。结论粪微生态双层肠溶胶囊制备技术可行，质量稳定可靠，可为今后防治肠道微生态失衡相关疾病提供参考。

Objective To initially explore the feasibility and quality control of producing fecal-derived microbiota enteric capsules.Methods Fecal-derived microbiota was put into double layered enteric capsules.The bacteria colony numbers of fresh prepared glycerol containing fecal-derived microbiota liquid,glycerol containing and glycerol free fecal-derived microbiota after stored at -80 ℃ for 72 h were counted with standard plate count methods in order to investigate the stability after frozen.Methylene blue was taken as the standard,resistance to acid and release rate of capsules was evaluated.The t test was performed for statistical analysis.Results The preparation process of double layered microbiota capsules was simple and practicable.The data of 12 plates of each microbiota were acquired.The number of bacteria colony of fresh prepared glycerol containing fecal-derived microbiota （（5.08 ±1.37）×107 colony-forming units （cfu）/mL）was significantly more than that of the group without glycerin （（1.73±0.64）×107 cfu/mL）at -80 ℃for 72 h （t = 7.621 ,P 〈0.01）.There was no significant difference in the number of bacteria colony between glycerin containing frozen fecal-derived microbiota （（4.67±1 .56）×10 7 cfu/mL）and fresh fecal-derived microbiota （t = 0.694,P = 0.495）.Regression equations were achieved with fecal-derived microbiota containing methylene blue,and there was a good linear relation between 0.5 μg/mL and 8.0 μg/mL.Three fecal-derived microbiota enteric capsules containing methylene blue were prepared.Their resistance to acid was 96.0%,99.1 %,and 95 .5 %,while the release rate was 88.6%,95 .1 % and 86.5 %, respectively.All met the requirement of Chinese Pharmacopoeia to enteric capsules.Conclusion The preparation of double layered fecal-derived microbiota enteric capsules had feasible technology and stable quality,which could provide reference in prevention and treatment of diseases related with colonic microbiota imbalance.