Assessment of Microbial Populations in the Manufacture of Vacuum-Packaged Ready-to-Eat Roast Beef and in a Related Production Plant

The use of the Seward Stomacher in preparing samples for the assessment of microbial populations in the manufacture of vacuum-packaged ready-to-eat roast beef and in a related production plant.

Abstract

Some microbiological criteria were monitored for 6 months in vacuum-packaged roast beef (15 production batches), raw beef (10 batches), and other meat products (12 batches) produced Continue reading

New Real-Time Quantitative PCR Procedure for Quantification of Bifidobacteria in Human Fecal Samples.

Stomacher® 400 used to prepare faeces samples for comparative study of fluorescent in situ hybridization and the current gold standard for intestinal microbiota quantification. In general, a good correlation between the two methods was observed. Continue reading

Listeria monocytogenes and hemolytic Listeria innocua in poultry

Listeria monocytogenes is a ubiquitous, saprophytic, Gram-positive bacterium and occasional food-borne pathogen, often associated with ready-to-eat meat products. Because of the increased consumer interest in organic, all natural, and free range poultry products, it is important to understand L. monocytogenes in the context of such systems. Pasture-reared poultry were surveyed over the course of two 8-wk rearing periods. Cecal, soil, and grass samples were collected for Listeria isolation and characterization. Seven of 399 cecal samples (or 1.75%) were Listeria-positive.

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Effect of gamma irradiation on the microbiological quality of minimally processed vegetables

The Stomacher® 400 was used to process vegetable samples for a period of minute as part of the study to test the effect of gamma irradiation on the microbiological quality of minimally processed vegetables. The study found that there was no significant differences present in sensory total quality between the control and the irradiated vegetable and between days of storage.

food microbiology celery cabbage enterobacteriaceae stomacher 400

Detection of Cryptosporidium oocytes on lettuce and raspberries

The aim of this study was to compare two previously tested buffers and three extraction methods to find out if any combination was superior for detection of Cryptosporidium oocysts on lettuce and raspberries. No significant differences between use of different buffers or extraction methods were found and thus, no combination can be said to be
superior to the others. To find any differences, investigations with a higher number of
replicates may be required. Stomacher® Bags were used as part of this study.

food microbiology raspberry lettuce cryptosporidium stomacher 400