Record Display for the EPA National Library Catalog

RECORD NUMBER: 7 OF 68

OLS Field Name OLS Field Data
Main Title Alicyclobacillus Thermophilic Acidophilic Bacilli / [electronic resource] :
Type EBOOK
Author Yokota, Akira.
Other Authors
Author Title of a Work
Fujii, Tateo.
Goto, Keiichi.
Publisher Springer Japan,
Year Published 2007
Call Number QR1-502
ISBN 9784431698500
Subjects Life sciences. ; Food science. ; Microbiology. ; Bacteriology.
Internet Access
Description Access URL
http://dx.doi.org/10.1007/978-4-431-69850-0
Collation XXIII, 159 p. 39 illus. online resource.
Notes
Due to license restrictions, this resource is available to EPA employees and authorized contractors only
Contents Notes
Historical background related to Alicyclobacillus -- Characteristics of Alicyclobacillus -- Parameters for detection of Alicyclobacillus and test methods -- Differentiation and identification of Alicyclobacillus species -- Growth Profile of Alicyclobacillus in Fruit Juices -- Distribution and Epidemiology -- Factors of spoilage caused by Alicyclobacillus and prevention measures -- Agencies, associations, NPOs, institutes and researchers involved with Alicyclobacillus. Soft drinks with pHs lower than 4. 0 are subjected to minimum pasteuri- tion at 65 °C for 10 min as required by the Japanese Food Sanitation Law. Not only pathogenic bacteria but most spore-forming bacteria are unable to grow at this low pH condition, and thus reports of microbial spoilage in pasteurized acidic soft drinks are rare. Since 1982, when the spoilage of aseptically packed apple juice was - tributed to a new type of acidophilic spore-forming bacteria in Germany, a succession of similar complaints regarding other fruit juice concentrates and their products has been received. In the beginning, the bacteria were classified in the genus Bacillus, but later, in 1992, the new genus Ali- clobacillus was proposed owing to their characteristic cellular membranes containing omega-alicyclic fatty acids. A group of Alicyclobacillus strains, responsible for the tainting of fruit juices, was then described as A. a- doterrestris in 1999. They are acidophilic and grow preferably at around pH 4. 0. They are thermophilic and grow better at temperatures above 40 °C. This indicates that we might have been missing them by our or- nary methods of bacterial detection at pH 7. 0 and 35 °C. Their spores are not inactivated by the pasteurizing conditions generally applied to juice concentrates and juice-containing beverages. Above all, because the bac- ria do not produce gas, consumers do not see any sign of spoilage until they open the product and notice its unpleasant taint.