Principles of Food Sanitation

The Relationship of Microorganisms to Sanitation 29 Log number of microorganisms Lag phase Logarithmic growth phase Stationary g ...

the increase in number of microbes occurs at an exponential rate until some environmen- tal factor becomes limiting. The length ...

The Relationship of Microorganisms to Sanitation 31 Thermophiles (high-temperature-lov- ing microorganisms), with growth optima ...

andAwis RH = Aw×100. Therefore, an Aw of 0.95 is approximately equivalent to an RH of 95% in the atmosphere above the solu- tion ...

food processing. Most bactericides are uti- lized as a method of decontaminating food- stuffs or as a sanitizer for cleaned equi ...

These films are very difficult to remove during the cleaning operation. Microorgan- isms that appear to be more of a problem to ...

usually have limited microbial growth. If extensive bacterial growth occurs on the sur- face, penetration inside the food surfac ...

can result from any one of several plausible causes. Although the sanitarian is most interested in those related to microbial or ...

cream, meat, fresh vegetables, finfish, oys- ters, and other seafood. It is a facultative anaerobic, gram-negative rod that is m ...

home-canned vegetables and fruits with a low to medium acid content. Because this bacterium is anaerobic, canned and vacuum- pac ...

The Relationship of Microorganisms to Sanitation 39 Table 3–3 Characteristics of the More Common Foodborne Illnesses Average Tim ...

40 PRINCIPLES OFFOODSANITATION Table 3–3 Continued Average Time before Illness Causative Agent Symptoms Onset of Symptoms Foods ...

The Relationship of Microorganisms to Sanitation 41 Listerosis L. monocytogenes Meningitis or 4 days to several Milk, cole slaw, ...

reflect no visible signs of illness but excrete this microorganism in their feces. Symptoms of those with a severe case may incl ...

slowly, and subsequently held for an extended period of time before serving. As withSalmonellamicroorganisms, large num- bers of ...

and/or insulin-dependent diabetes, and a small number of cases may recur (Siegler et al., 1993). Thrombotic thrombocytopenic pur ...

This microorganism is a facultative gram- positive, rod-shaped, non-spore-forming microaerophilic (5 to 10% CO 2 ) bacterium. L. ...

it appears that thousands or even millions of cells may be required to infect healthy ani- mals, whereas 1 to 100 cells may infe ...

year, a significant number of those affected die from the disease. He has identified this microorganism as a “super bacterium” t ...

is usually low among others. Foods most associated with shigellosis are those subjected to a large amount of handling or those c ...