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CURRENT
RESEARCH
Evaluation
of spore qualities including heat resistance as influenced
by environmental conditions prevailing during sporulation
is currently being investigated. The purpose of this research
is to assess and explain reasons for variations in spore resistances
to preservative techniques commonly used in the food industry.
In this respect both bacterial and fungal spores are being
evaluated. In addition, the survival of pathogens in foods
including Escherichia coli is being examined. Cold
shock proteins (csp) which are synthesized in response to
a drop in temperature may influence the growth capability
of E. coli at low temperatures and/or its survival.
Also, csp's are being investigated for their ability to cross
protect cells in other adverse environments including acid
based foods.
RECENT
PUBLICATIONS
Opapeju F.O., Rademacher M., Blank G. and Nyachoti C.M. 2008 Effect of low-protein amino acid-supplemented diets on the growth and performance, gut morphology, organ weights and digesta characteristics of weaned pigs. Animal 2:10 pp 1457-1464
Monu, E., Blank,G., Holley, R. and Zawistowski, J. 2008 Phtyosterol effects on milk and yogurt microflora. J. Food Sci. 73:121-126.
Head, D.S.,Cenkowski, S., Holley. R. A. and Blank, G. 2008. Effects of superheated steam on Geobacillus stearothermophilus spore viability. J. Appl. Micorbiol. 104:1213-1220.
Kiarie, E.,Nyachoti, C.M.,Slominski, B.A. and Blank, G.2007. Growth performance, gastrointestinal microbial activity and nutrient digestibility in early-weaned pigs fed diets containing flaxseed and carbohydrase enzymes. J. Animal. Sci. 85:2982-2993.
Schmidt, L.D., Blank, G. Boros, D. and Slominski, B. A. 2007. The nutritive value of egg by-products and their potential bactericidal activity: in vitro and in vivo studies. J. Sci. Food Agric. 87:378-387.
Mehyar, G.F., Han, J.H., Holley, R. A., Blank, G. and Hydamaka, A. 2007. Suitability of pea starch and calcium alginate as antimicrobial coatings on chicken skin. Poul. Sci. 86:386-393.
Rosin, E. A., Blank, G., Slominski, B.A. and Holley, R. A.2007. Enzyme supplements in broiler chicken diets: in vitro and in vivo effects on bacterial growth. J. Sci. Food Agric.87:1009-1020.
Holley, R.A., Arrus, K., Ominski, K.H., Tenuta, M. and Blank, G. 2006 Salmonella survival in manure-treated soils during simulated seasonal temperature exposure. J. Environ. Qual. 35:1170-1180.
Holley, R. A., Arrus, K., Ominski,K.H., Tenuta, M.and Blank, G. 2006. Influence of temperature on Salmonella survival in hog manure slurry and seasonal profiles in farm manure reservoirs. Livestock Sci. 102:226-236.
Nyachoti, C.M., Omogbenigum, F.O., Rademacher, M. and Blank, G. 2006. Performance responses and indicators of gastrointestinal health in early-weaned pigs fed low-protein amino acid-supplemented diets. J. Anim. Sci. 84:125-134.
Arrus,
K., Blank, G., Abramson, D., Clear, R., and
Holley, R.A. 2005. Aflatoxin production by Aspergillus
flavus in Brazil nuts.
Arrus,
K., Blank, G., Clear, R., Holley, R.A. and
Abramson, D. 2005. Microbiological and aflatoxin evaluation
of Brazil nuts and pods. J. Food Protect. 68:1060-1065.
Arrus, K., Blank, G., Abramson, D., Clear,
R. and Holley, R.A. 2005. Aflatoxin production by Aspergillus
flavus in Brazil nuts. J. Stored Food Prod. In
press.
Blank,
G., Cho, C. and Ismond. 2003. Acid tolerance of Escherichia
coli following cold shock treatment. J. Food Safety 23:127-144.
Hu, Y., Blank, G., Przybylski, R. and Ismond,
A. 2002. Growth, survival and heat resistance of Salmonella
Typhimurium and Escherichia coli in regular and omega-3
hens egg products. J. Food Safety 21:245-261.
Cenkowski, S., Blank, G., and Chung Lewis,
M. 2002. Modelling of Listeria monocytogenes growth
in pre-sterilized ground beef as affected by fat content,
temperature and atmosphere. Cdn Biosys. Engin. 44:311-316.
Bollman, J., Ismond, A. and Blank, G. 2001.
Survival of Escherichia coli 0157:H7 in frozen foods:
impact of the cold shock response. Int. J. Food Micro. 64:127-138.
Guan, T.Y., Blank, G., Ismond, A. and Van
Acker, R. 2001. Fate of foodborne bacterial patahogens in
pesticide products. J. Sci. Food Agric. 81:503-512.
Conference Presentations
Guan,
T.Y., Blank, G. and Holley, R.A. Survival
of pathogenic bacteria in pesticides and on tomato plants.
IFT Annual Meeting, Las Vegas. 2004.
Rosin, E., Blank, G., Slominski, B. and Holley,
R.A. Effect of exogenous enzymes in antibiotic-free diets
on poultry gut microflora. IFT Annual Meeting, Las Vegas.
2004.
Henry, N., Blank, G., Hydamaka, A., Cenkowski,
S. and Holley, R.A. Effect of superheated steam on the reduction
of Bacillus stearothermophilus spores on oat groats.
IFT Annual Meeting, Las Vegas. 2004.
Mehyar, G.F., Holley, R.A., Blank, G. and
Han, J.H. The improved efficiency of selecting antimicrobials
on chicken by sequential treatments prior to chilling. IFT
Annual Meeting, Las Vegas. 2004.
Zmidzinska, D., Cenkowski, S. and Blank, G.
Superheated steam treatment of Bacillus stearothermophilus
spores. North Central ASAE/CSAE Conference, Winnipeg, MB.
Arrus, K., Blank, G., Holley, R.A., Abramson,
D., and Clear, R.M. Growth and aflatoxin production of Aspergillus
flavus on Brazil nuts. 12th World Congress of Food Science
and Technology, July 16, 2003. Chicago, Illinois.
Arrus, K., Blank, G., Holley, R.A. and Clear,
R.M. Microbiological evaluation of Brazil nuts. IFT Food Safety
and Quality Conference. November 5, 2003. Orlando, Florida.
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