Diagnosis of Microbial Problems on Paper Machines

Autor:	Yasumasa Ishii, Linda R. Robertson
Rok vydání:	2003
Předmět:	Diagnostic methods business.industry Mechanical Engineering Food spoilage General Chemistry Strength loss Biotechnology chemistry.chemical_compound chemistry Tryptone Media Technology General Materials Science Biochemical engineering business
Zdroj:	JAPAN TAPPI JOURNAL. 57:830-836,021
ISSN:	1881-1000 0022-815X
DOI:	10.2524/jtappij.57.830
Popis:	Numerous microbes are capable of growth in paper machine systems. They form vis ble deposits that result in sheet defects, holes or even breaks in the web. Microbes are also responsible for performance loss and spoilage of pulp and expensive functional chemicals. This spoilage can lead to strength loss in fibers. formation of odors that result in rejected products, viscosity loss in starch and a variety of other problems. Diagnosis of microbial problems in complicated by the fact that simple aerobic plating techniques on tryptone glucose extract agar or Petrifilms TM with a 48-hour incubation period do not allow recovery of all of the microbes causing the problems. Nor do the numbers of planktonic (free-swimming) cells correlate to the severity of deposition on surfaces. This paper will discuss the limitations of generally accepted plating techniques and propose more accurate diagnostic methods for solving microbial problems.
Databáze:	OpenAIRE
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