•  
  •  
 

Keywords

Cattlemen's Day, 1994; Kansas Agricultural Experiment Station contribution; no. 94-373-S; Report of progress (Kansas State University. Agricultural Experiment Station and Cooperative Extension Service); 704; Beef; Lactic acid; Bacteria; Safety

Abstract

Beef loins were sprayed with 1.5% lactic acid either before or after vacuum storage, both before and after vacuum storage, and before vacuum packaging followed by a water spray after storage. We stored treated loins at either 30 ÌŠF or 36 ÌŠF for up to 126 days in vacuum packages. Nonsprayed or nonstored loins served as controls. Total aerobic plate counts (APCs) and tests for presence/absence of two important foodborne pathogens, Salmonella spp. and Listeria monocytogenes, were conducted during storage. Acid spraying prior to vacuum packaging was more effective in reducing bacterial contamination than spraying after storage. However, counts were reduced (P<.05) for only 28 days of storage. Most loins stored at 30 ÌŠF had lower APCs than those stored at 36 ÌŠF. Salmonella was not detected in any samples. Twenty-eight percent of nonacid treated and 4 percent of acid-treated loins were positive for Listeria spp. with L. monocytogenes found from one nonacid-treated loin. No change in visual color was observed in acid-treated loins. Appropriate timing of acid s praying in combination with lower storage temperature can improve the keeping quality and microbial safety of meat.

COinS
 

Rights Statement

In Copyright - Educational Use Permitted.
 

To view the content in your browser, please download Adobe Reader or, alternately,
you may Download the file to your hard drive.

NOTE: The latest versions of Adobe Reader do not support viewing PDF files within Firefox on Mac OS and if you are using a modern (Intel) Mac, there is no official plugin for viewing PDF files within the browser window.