Final answer:
Most bacteria are neutrophiles and grow best at a neutral pH, but some, such as Lactobacillus acidophilus, can grow in acidic environments like those found in yogurt and cheese. Deli turkey meat and cheeses, if not stored properly, can support bacterial growth and are considered Potentially Hazardous Foods. Therefore, the statement is true.
Step-by-step explanation:
Bacteria grow best in environments that are favorable to their specific needs. When it comes to pH levels and food sources, it's important to note that most bacteria are neutrophiles, meaning they grow optimally at a pH close to neutral (around pH 7). However, certain bacteria, such as Lactobacillus acidophilus, thrive in more acidic environments (pH 4.5) and are used in the production of foods like yogurt and cheese, which are acidic due to lactic acid production.
While some foods such as deli turkey meat and cheeses can support the growth of bacteria if left at room temperature or if not handled properly, the term PHF (Potentially Hazardous Food) generally refers to foods that require time and temperature control to limit pathogenic microorganism growth or toxin formation. In the case of deli turkey meat and cheeses, they can indeed be a medium for bacterial growth if not properly stored and handled, hence they can be considered PHFs. So, the statement that bacteria grow best in PHF foods such as deli turkey meat and cheeses is true.