Extracts active on the growth of food-born microorganisms were prepared from radish by using acetone, methanol and water as the solvents. Strains of bacteria and yeast, such as L. brevis, L. fermentum, L. faecalis, L. mesenteroides, B. subtilis, S. flexneri, S. aureus and C. albicans. Addition of 1 $mell$ of acetone extract exhibited the strongest growth effect on L. brevis. The water extracts turned out to stimulate growth of all Lactic acid bacteria. Especially, it was observed that the same material produced the highest stimulatory effect(by about 40-50 times) on L. faecalis and L. fermentum and L. mesenteroides. Also, it was proved to have a weak stimulate effect on C. albicans, S. flexneri and S. aureus. But, on the contrary to this, when applied to B. subtilis it showed growth stimulation by about 10 times.