In conclusion, traditional yogurt and colostrum were
preliminary screened because variable animal feeding and
rare use of antibiotics can introduce novel and promising
probiotic bacteria. Our findings indicated that L. plantarum
17C and L. plantarum 13C strains, which were isolated
from colostrum, displayed a desirable tolerance to
low pH and high concentrations of bile salts, favorable
antipathogen activity, and acceptable antibiotic susceptibility.
Thus, these two strains can be considered as potential
probiotics. In addition, L. plantarum 17C showed
significant antiproliferative effects on HT-29 human colon
cancer cell line.
Acknowledgments
The financial support from the University Putra Malaysia,
the Faculty of Pharmacy, Tabriz University of Medical
Sciences, Tabriz, Iran, and the moral patronage of
Abolfazl Barzegari and Simin Sharifi are gratefully
acknowledged.