한국인 영유아 장내균총 정상화를 위한 프로바이오틱 유제품의 개발

This study was conducted to develop an effective probiotic dairy product to normalize the microbial flora in Korean infants. A total of 2,200 colonies were isolated from 25 Korean neonates, and 16S rRNA of 348 isolates was analyzed. Approximately 40% of the lactic-acid producing bacterial isolates were Enterococcus faecalis, and 34.2% of them were strains similar to XR7 in the GenBank database. The fastest growing strain in MRS broth was registered as 91532 by the KACC. The selected strain was freeze-dried and utilized to ferment a milk-containing rice soup, tarakjuk. Microbiological, physico-chemical, and sensory characteristics of the fermented tarakjuk were compared with fermented milk and tarakjuk. E. faecalis KACC 91532 increased from 6.14±0.19 to 7.36±0.13 Log CFU/mL, and can be useful as a probiotic, as described in the Standards for Functional Health Foods.