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1 Research and Development Center, Hankuk Yakult Milk Products Co., Ltd. 418-12, Komae-ri, Kiheung-eup, Yongin-kun, Kyunggi-do, Korea
2 College of Agriculture and Life Science, Seoul National University, 103 Seodun-dong, Kwonsun-ku, Suwon, Korea
A selective medium, blood-glucose-liver agar containing oxgall (.2 mg/ml) and gentamicin (30 µg/ml), was formulated for the selective enumeration of bifidobacteria in fermented dairy products containing both lactobacilli and streptococci. Recovery rates of bifidobacteria on this selective medium were around 90% of recovery on blood-glucose-liver agar. Strains of lactobacilli and streptococci were mostly inhibited with higher dilutions on this selective medium.
Key Words: bifidobacteria fermented dairy products selective enumeration
Submitted on October 31, 1994
Accepted on May 18, 1995
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