Impact of freeze drying on drug resistance pattern of few Escherichia coli strains

Tripathi, C.K.; Sur, B.; Govind, A.; Basu, S.K.

Indian Journal of Experimental Biology 27(12): 1099-1100

1989


ISSN/ISBN: 0019-5189
PMID: 2699309
Document Number: 328349
Drug resistant strains of Escherichia coli were freeze dried for long term preservation. Certain drug resistance markers were maintained after freeze drying while others were not. Streptomycin and sulphonamide resistance markers resisted freeze drying. Ampicillin, cephelaxin and neomycin resistances developed very frequently and except gentamicin all the markers were lost in varying percentage after freeze drying.

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