Comparison of Bacterial Species Isolated from Ground Beef, Textured Soy Protein and Ground Beef Extended with Textured Soy Protein .

A survey of the bacterial species of public health importance which could be isolated from ground beef (GB), textured soy protein (TSP) and ground beef extended with TSP (SGB) after 3 and 10 days of storage at 4 C was conducted. Escherichia coli was the most frequent gram-negative isolate from GB and SGB. Few gram-negative organisms were found in TSP.

Survey of the Bacterial Populations of Bologna Products .

Bologna products most frequently are stored and consumed as refrigerated products. Thus bacteria that survive processing or those that contaminate the product subsequent to processing are not destroyed. Ten types of presliced, vacuum-packaged bologna products were purchased from a high-volume retail market and analyzed for total aerobic plate count (APC) and common foodborne pathogens.

Bacterial Populations of Ground Beef, Textured Soy Protein and Ground Beef Extended With Soy Protein After 3 and 10 Days of Refrigerated Storage .

A survey of the microbial populations of 31 samples of ground beef (GB), textured soy protein (TSP), and ground beef extended with TSP (SGB) after 3 and 10 days of storage at 4 C was done. Analyses included aerobic plate count (APC), psychrotrophic plate count (PPC), coliform Most Probable Number (CMPN) and plate determinations (CPC), Escherichia coli MPN (EMPN) and plate determinations (EPC), Staphylococcus aureus MPN, and fecal streptococcus plate count. Statistical analyses of data from the enumeration procedures showed significant increases in the total microbial flora after 10 days of storage.

Analyst Variation in Doing the Standard Plate Count as Described in Standard Methods for the Examination of Dairy Products .

Five analysts participated in a study to evaluate the following aspects of the 13th edition of Standard Methods for the Examination of Dairy Products (SMEDP): (a) analyst variation in overall Standard Plate Counts (SPC), and (b) analyst duplication of bacterial colony counts on agar places. Each analyst prepared 24 samples of pasteurized, homogenized milk during a successive 8-day period (i.e.

A Bacteriological Survey of Raw Ground Beef .

The microbiological quality of 150 units of raw ground beef obtained from a local retail store was determined. The range of aerobic plate counts was from 6.9 × 10 to 8.

A Microbial Survey of Various Fresh and Frozen Seafood Products.

The microbiological quality of four frozen and seven fresh seafood products (597 units in total) obtained from a local retail store were analyzed. Aerobic plate count means (geometric) ranged from 3.5 × 10/g to 9.

Selected Food Microbiological Data Collected through a Computerized Program.

Selected results from a Computerized Food Microbiological Data Collection program are presented. Data are generated by 11 Department of Defense (DoD) laboratories and forwarded to a central location, coded into computer language, and entered into an existing program. As designed, the program is quite flexible, and selected retrievals for special purposes are easily accomplished.