Zobrazeno 1 - 10
of 55
pro vyhledávání: '"Leora A. Shelef"'
Autor:
Leora A. Shelef
Publikováno v:
Journal of food protection. 57(5)
Sodium lactate is used as humectant and flavor enhancer in meat and poultry products, and there is growing evidence of antimicrobial properties of the salt. Potassium and calcium lactate are equally effective in controlling growth of aerobes and anae
Autor:
Leora A. Shelef, Ning Chen
Publikováno v:
Journal of food protection. 55(8)
The relationship between water activity (aw), lactate, and growth of Listeria monocytogenes strain Scott A was studied in a meat model system consisting of cooked strained beef ranging in moisture content from 25 to 85% (wt/wt). Lactate (4%) depresse
Publikováno v:
Food Microbiology. 21:815-818
This study was undertaken to screen fatty acids, conjugated isomers of linoleic acid (CLA), and monolaurin for antilisterial effects in broth, and to further test the active compounds in cooked comminuted beef and hot dogs. Capric, lauric, myristic,
Publikováno v:
Food Microbiology. 18:231-238
Bacillus cereus is an aerobic sporeformer commonly found in raw and processed foods. Foodborne illnesses associated with this pathogen are caused primarily by consumption of cooked foods with inadequate refrigeration. Mannitol-egg yolk-polymyxin (MYP
Autor:
Hui Peng, Leora A. Shelef
Publikováno v:
International Journal of Food Microbiology. 63:225-233
Salmonella spp. and Listeria monocytogenes continue to be major pathogens of concern to food processors. However, routine screening of food samples to detect these pathogens is generally labor intensive and costly. Automated optical procedures for th
Autor:
Leora A. Shelef, Hui Peng
Publikováno v:
Journal of Food Protection. 62:1341-1345
We previously reported an accelerated method to detect salmonellae in foods. It consisted of a preenrichment step (6 h) followed by immunomagnetic separation (IMS) and automated detection, based on positive biochemical characteristics, during overnig
Autor:
Leora A. Shelef, Wei Tan
Publikováno v:
Journal of Microbiological Methods. 37:87-91
An automated method to detect salmonellae in foods was developed and tested in food samples intentionally contaminated with the test organisms. Liquid eggs, shell eggs, dry eggs, skim milk and chicken were spiked with Salmonella enteritidis , S. typh
Autor:
Yao Kouassi, Leora A. Shelef
Publikováno v:
Journal of Food Safety. 18:231-242
The effects of cinnamic acid (C 6 H 5 CH=CHCOOH) on L. monocytogenes strain Scott A and listeriolysin O (LLO) activity were studied. In addition, a possible mode of action of the acid was investigated. L. monocytogenes was more susceptible to cinnami
Publikováno v:
Food Microbiology. 15:199-205
Amino acid decarboxylase (DC) activities ofSalmonellaspp. and other Enterobacteriaceae were studied using the BioSys, a novel automated system for detection of microbial metabolic activities. The growth media consisted of peptone, glucose and yeast e
Publikováno v:
Journal of Food Protection. 60:673-676
The levels of microbial contamination in purchased pre-wrapped fresh ground beef samples were estimated by using the BioSys™ automated optical system for rapid detection of the presence of microorganisms. Additionally, the response of the system to