Listeria species

Nguyen-the C and Lund B M (1991), The lethal effect of carrot on Listeria species , Journal of Applied Bacteriology, 70, 479-488. 

Lipopolysaccharide extracts from different pathogenic and nonpatho-genic . coli strains were also analyzed by FT-IR with principle component analysis and canonical variate analysis (Kim et al, 2006b). The data showed that E. coli strains can be discriminated with >95% accuracy. Listeria species were also reliably classified by FT-IR coupled with an artificial neural network technology with a success rate of 96% (Rebuffo et al, 2006), while the identification rate for L. monocytogenes alone was 99.2%. 

Banada, P. P., Liu, Y.-S., Yang, L. J., Bashir, R., and Bhunia, A. K. (2006). Performance evaluation of a low conductive growth medium (LCGM) for healthy and stressed Listeria monocytogenes and other common bacterial species. Int. J. Food Microbiol. Ill, 12-20. Banada, P. P., Guo, S., Bayraktar, B., Bae, E., Rajwa, B., Robinson, J. P., Hirleman, E. D., and Bhunia, A. K. (2007). Optical forward-scattering for detection of Listeria monocytogenes and other Listeria species. Biosens. Bioelectron. 22,1664-1671. 

Bhunia, A. K., and Westbrook, D. G. (1998). Alkaline phosphatase release assay to determine cytotoxicity for Listeria species. Lett. Appl. Microbiol. 26,305-310. 

Rebuffo, C. A., Schmitt, J., Wenning, M., von Stetten, F., and Scherer, S. (2006). Reliable and rapid identification of Listeria monocytogenes and Listeria species by artificial neural network-based Fourier transform infrared spectroscopy. Appl. Environ. Microbiol. 72, 994-1000. 

Shroyer, M., and Bhunia, A. (2003). Development of a rapid 1-h fluorescence-based cytotoxicity assay for Listeria species. /. Microbiol. Methods 55,35-40. 

Microbial limits There may be a need to specify the total count of aerobic micro-organisms, the total count of yeasts and molds, and the absence of specific objectionable bacteria. The source of the herbal material should be taken into account when considering the inclusion of other possible pathogens (e.g., Campylobacter and Listeria species) in addition to those specified in the European Pharmacopoeia. Microbial counts should be determined using pharmacopoeial procedures or other validated procedures. The European Pharmacopoeia gives guidance on acceptance criteria. 

Volokhov, D., A. Rasooly, K. Chumakov, and V. Chizhikov. Identification of Listeria species by microarray-based assay. J Clin Microbiol. 2002, 40(12), 4720-4728... 

Troxler R, von Gravenitz A, Fnnke G, Wiedemann B, Stock I (2000). Natnral antibiotic snsceptibility by Listeria species L. grayi, L. innocua, L. ivanovii, L. monocytogenes, L. seeligeri and L. welshimeri strains. Clin. Microbiol. Infect. 6 525-535. 

Sakacin Sakacin is produced by several strains of Lb. sakei used in fermented meat products. Sakacin is a Class Ila bacteriocin active against Listeria species the most important type is sakacin A produced hy Lb. sakei Lb706. Some commercial formulations of sakacin A manufactured by Danisco and Chr. Hansen are available in the market [52, 53]. More detailed information about other bacteriocins can be found in the review of Reis etal. [52]. 

GO Barbuddhe, S.B., Maier, T., Schwarz, G., Kostrzewa, M., Hof, H., Domann, E., Chakraborty, T., and Main, T. (2008) Rapid identification and typing of listeria species by matrix-assisted laser desorption ionization-time of flight mass spectrometry. Appl. Environ. Microbiol.,... 

A. Bubert, S. Kohler, and W. Goebel, The homologus and heterologous regions within the lAP-gene and genus-specific and species-specific identification of Listeria by polymera.se chain-reaction. Appl. Environ. Microbiol.. 5S 2632 (1992). 

Host resistance Bacterial models—Listeria monocytogenes (mortality or spleen clearance) Streptococcus species (mortality) Viral models—influenza (mortality) Parasitic models—Plasmodium yoelii (parasitemia) or Trichinella spiralis (muscle larvae counts and worm expulsion) Syngeneic tumor models—PYB6 sarcoma (tumor incidence) B16F10 melanoma (lung burden). 

Gray, K. M. (2004). Cytotoxicity and cell-based sensors for detection of Listeria monocytogenes and Bacillus species. Ph.D. Dissertation, Purdue University, West Lafayette p. 130. 

After aflatoxin contamination, perhaps the next most important factor that has a negative effect on human health and food quality is the presence of food borne bacteria. Several routes for reduction of the risk are currently under extensive investigation. One such means of risk reduction is the utilization of ionizing radiation treatments on meat food products. Ionizing radiation has been demonstrated to be an effective method to reduce or eliminate several species of food borne human pathogens such as Salmonella, Campylobacter, Listeria, Trichinella, and Yersinia Chapter 23). If proper processing conditions are used, it is possible to produce high quality, shelf-stable, commercially sterile muscle foods. 

Corr, S. C., Gahan, C. G., and Hill, C. (2007a). Impact of selected Lactobacillus and Bifidobacterium species on Listeria monocytogenes infection and the mucosal immune response. FEMS Immunol. Med. Microbiol. 50(3), 380-388. 

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