Bacterial contamination on rubber picker fingers before, during, and after processing

Area of Science:

• Food microbiology
• Industrial sanitation

Background:

• Rubber picker fingers are crucial components in industrial processing.
• Assessing bacterial contamination on these components is vital for food safety.

Purpose of the Study:

• To quantify bacterial levels on rubber picker fingers from industrial processing plants.
• To investigate the impact of finger location and usage on bacterial growth.
• To evaluate the potential for microbial proliferation on used picker fingers.

Main Methods:

• Collected rubber picker fingers from three industrial processors across multiple trials.
• Assessed bacterial density (log10 cfu) at various locations within the picker machine (front, center, back, right, left).
• Incubated used picker finger samples to observe microbial growth without additional disinfectant.

Main Results:

• Bacterial density varied significantly, ranging from log10 cfu = 0 to 7.33 depending on the plant and finger section.
• No significant difference in bacterial counts was found between left and right sides of the picker.
• A significant difference (P < 0.05) in bacterial counts was observed from front to exit end for one plant.
• New picker fingers showed no bacterial growth; used fingers incubated for 3 days exhibited significant microbial proliferation (P < 0.05).

Conclusions:

• Bacterial contamination on rubber picker fingers is highly variable.
• Used picker fingers can support significant microbial growth, highlighting a sanitation challenge.
• Early intervention and enhanced sanitation practices during the picking process are recommended for pathogen control.