Can any one share literature or link where that explains the strategy or plan to get desired microbes by eliminating the non desired from complex source of samples like fecal or HMO.
Milk and fecal (1to3 months) samples is good source of probiotic bacteria. you can isolate from this samples by selective media such as NNLP-MRS for Bifidobacter or MRS-sulicin for Lb. acidophilus. The optimum condition of probiotic is 37C for 72hours under anaerobic growth.