Microbiology

Advances in Meat Research: Meat and Poultry Microbiology by A. M. Pearson, T. R. Dutson

By A. M. Pearson, T. R. Dutson

The Advances in Meat examine sequence has arisen from a perceived want for a entire insurance of sure themes which are pertinent to meat and meat items. We, the editors, have made the choice to be aware of a chain of similar subject matters which are deemed to be impor tant to an realizing of meat, either clean and processed. it really is our honest desire that via focusing upon components relating to meat technological know-how that researchers who give a contribution to this quantity cannot basically replace these interested by academia and but in addition promulgate evidence that can bring about suggestions of meat difficulties and reduction in enhancing the potency of assorted linked business techniques. we've selected to dedicate quantity 1 to electric stimulation in view of the frequent curiosity in its meat functions. even though the classical research via A. Harsham and Fred Deatherage used to be released in 1951, it used to be now not permitted via the beef as a result of a couple of components which are mentioned within the textual content. those investigators did, notwithstanding, lay the basis for contemporary electric stimulation of carcasses by way of their distinctive reports at the results of various present, voltage, fre quency, wave kinds, and time. the elemental info supplied by means of those employees kept a large amount of experimentation by way of those that subse quently "rediscovered" electric stimulation."

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F. 1983. The microbiology of raw, eviscerated chickens: A ten year comparison. Poult. Sci. 62, 437. CARTER, P. B. and COLLINS, F. M. 1974. The route of enteric infection in normal mice. J. Exp. Med. 139, 1189. CARTER, P. , WOOLCOCK, J. B. and COLLINS, F. M. 1975. Involvement of the upper respiratory tract in orally induced salmonellosis in mice. J. Infect. Dis. 131, 570. CHAMBERS, P. G. and LYSONS, R. J. 1979. The inhibitory effect of bovine rumen fluid on Salmonella typhimurium. Res. Vet. Sci.

When samples contained less than 20 Enterobacteriaceae per cm2, the incidence of salmonella was about 9%, but the incidence rose to 55% when the Enterobacteriaceae count was greater than 103 per cm2. Salmonella contamination was also found to increase during evisceration by Galton et al. (1954) and Shotts et al. (1961). Salmonellae can be present not only in the intestinal tract but also in mesenteric and portal lymph nodes. They are often present in lymph nodes when they are undetectable in intestinal contents.

1980). Further contamination of the carcass can occur from the hide or fleece folding over and contacting the exposed tissue and from contact with the hands of workers. During removal of the skin and feet, salmonellae can be transferred from the hooves, fleece, and hide to the carcass (Grau and Smith 1974; Grau 1979; Stolle 1981). The hands of workmen handling the skin and hocks become heavily contaminated (Empey and Scott 1939; Hess and Lott 1970). Sterile knives used in incising the skin and removing hocks can acquire on the blades about 107 aerobic mesophiles, 105 bacillus spores and psychrotrophs, and 103 Enterobacteriaceae (Empey and Scott 1939; Hess and Lott 1970).

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