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Enumeration of Escherichia coli in cooked and raw meats by ion mobility spectrometry.

A novel method for enumerating Escherichia coli in foods is described. It is based on the production of o-nitrophenol (ONP) from o-nitrophenyl-beta-D-glucuronide as detected by an ion mobility spectrometer. The time taken for the detection of ONP in a food sample was inversely proportional to the logarithm of the initial E. coli population. Escherichia coli could be detected at a level of 10 g-1 within 9 h.

Animals↗

Release of nickel from cooking utensils.

The release of nickel to boiling water from new and used saucepans of different material was measured. No nickel was released from aluminium, teflon and enamel. Certain amounts of nickel were released from stainless steel, but only at acid pH.

Aluminum↗