UHT TREATED MILK

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afreen 00
afreen 00's picture
UHT TREATED MILK

hey, i m working in a well known dairy industry as a trainee. i wanaa know that , is UHT treated milk is totally free of bacteria??
i had run the sampleof UHT treated milk of other company, in SPC , using.EMB AGAR . nad after the due time of incubation it gives pinkish purple fish eye colonies. which is according to my preliminuary thought, E.Aerogenes.
i wanaa know is that possible UHT treated milk contain this organism or it is just my handling error??? please do give me your valuable  replies.
PLEASE  DO REPLY ME AS SOON AS POSSIBLE