Selective media for group D streptococci

摘要: Abstract Group D streptococci are contaminants of different food commodities, especially those animal origin. They encompass the physiological subgroups enterococci, non-enterococci and enterococcus-like organisms. The first last may be included in proposed new genus Enterococcus future. serologically base grouping no longer constitute best definition which important hygiene. Up to present day more than 100 modifications selective media have been described for group or enterococci. Therefore it is impossible recommend a universal medium. choice medium depends on whether total enterococci detected not habitat highly contaminated. selectivity productivity following were compared using set test strains: citrate-azide-Tween-carbonate-agar (CATC), kanamycin-aesculin-azide-agar (KAA) M-enterococcus-agar (ME). Earlier results [Reuter (1978) Arch. Lebensmittelhyg. 29, 84–91] with these some other media, e.g. aesculin-bile-azide-agar, thallous-acetate-agar, crystal violet-azide-agar, streptococci-selective-agar considered as well. No was completely Either growth non-wanted strains occurred rate single wanted reduced. parallel use two one highly, moderately reasonable way obtain from habitat. Choice must result personal experience particular habitats investigated. Confirmatory tests performed many cases. Commercially prepared used after checking their against appropriate