e-Article
Growth of Bacillus cereuson Solid Media as Affected by Agar, Sodium Chloride, and Potassium Sorbate
Document Type
Article
Source
Journal of Food Protection; July 2000, Vol. 63 Issue: 7 p926-929, 4p
Subject
Language
ISSN
0362028X; 19449097
Abstract
The effect of two independent variables: microstructure, as modified by the agar content (1.0, 4.0, 7.0%), and water activity (aw), as modified by the NaCl content (0.5, 2.5, 4.5%), in the absence or in the presence of potassium sorbate (0.0; 2,000 ppm) on Bacillus cereusgrowth on solid media was studied. The time to visible growth (TVG) and the radial growth rate (RGR) of colonies were evaluated. TVG was not affected by microstructure and K-sorbate, although when awwas reduced, TVG tended to increase. RGR depended on linear effects of microstructure and awvariables and their interaction. When K-sorbate was added to cultural media, RGR was reduced significantly. However, in the presence of K-sorbate, RGR was found to change only when awvas varied.