Читать книгу Analytical Food Microbiology - Ahmed E. Yousef - Страница 66

The previous discussion is generally sufficient for determining which rule to follow for counting colonies and population resulting from a particular analysis. Alternatively, the counting rule to follow may be determined using a systematic approach, such as the decision tree described in Figure 3.4. Examples for applying most of these counting rules are shown in Figure 3.5. Note that slightly different rules are applied for counting fungal colonies; this is explained in the chapter dealing with enumeration of this group of microorganisms.

Figure 3.4 Decision tree for applying microbial colony and population count rules.

Figure 3.5 Applying colony and population counting rules.