PMID: 9168314Apr 29, 1997Paper

Time-to-turbidity model for non-protective type B Clostridium botulinum

International Journal of Food Microbiology
R C Whiting, J C Oriente

Abstract

A model to predict the time for growth to turbidity from spores of non-proteolytic type B strains of Clostridium botulinum was developed in broth media with varying temperatures (4-28 degrees C), pH values (5-7), NaCl additions (0-4%) and total spores (10(1)-10(5)). The model estimates the probability that a sample will have growth on a given day for up to 90 days of storage. The parameters of the model include the probability of growth after 90 days (Pmax) and the mean time of growth (tau) for those that showed growth. The 95% confidence interval (CI95%) for tau was also determined. The tau decreased with increasing temperature and pH, but NaCl levels below 3% had little effect. Decreasing the number of spores in a sample increased both tau and the confidence intervals about tau, reflecting the increasing uncertainty about the estimation of growth times for low spore numbers.

Citations

Apr 4, 2000·International Journal of Food Microbiology·A M GibsonP J Bremer
Apr 26, 2002·Journal of Applied Microbiology·M L CaipoD W Schaffner
Mar 20, 2010·Critical Reviews in Food Science and Nutrition·Peter J Taormina
Jan 1, 1997·Journal of Applied Microbiology·C M BillonC Adair
Aug 4, 2009·Applied and Environmental Microbiology·P K Malakar, G C Barker
Apr 25, 2001·Applied and Environmental Microbiology·L ZhaoD W Schaffner
Sep 10, 2005·Applied and Environmental Microbiology·Sandra C StringerMichael W Peck
Dec 22, 2009·International Journal of Food Microbiology·Anderson de Souza Sant'AnaPilar Rodriguez de Massaguer
Sep 10, 2015·Journal of Bacteriology·Adaoha E C IhekwabaG C Barker
Apr 17, 2003·Journal of Food Protection·Daphne Phillips DaifasJohn W Austin

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