Salmonella in black pepper (Piper nigrum): From farm to processing

Area of Science:

• Food Safety
• Microbiology
• Agricultural Science

Background:

• Salmonella contamination in black pepper is a known issue in retail and imported goods.
• Limited data exists on Salmonella prevalence during the initial stages of black pepper production.

Purpose of the Study:

• To determine Salmonella prevalence and quantify its presence in black pepper during primary production and processing.
• To identify the main Salmonella serovars contaminating black pepper in Brazil.
• To assess the effectiveness of processing in reducing Salmonella contamination.

Main Methods:

• Collected 233 black pepper samples and 175 environmental samples from farms and processing plants in Espirito Santo, Brazil.
• Utilized microbiological methods to detect and quantify Salmonella.
• Identified Salmonella serovars using serotyping techniques.

Main Results:

• Salmonella was detected in various farm samples, including soil (16.7%), drying waste (20.4%), fallen berries (3.7%), threshed berries (14.3%), and dried peppercorns (22.2%).
• The pathogen was also found in processing plant samples: raw material (11.1%), export products (16.7%), and processing waste (16.7%).
• Twelve Salmonella serotypes were identified, with Salmonella Javiana being the most prevalent (38.8%). Post-harvest contamination was not eliminated during processing.

Conclusions:

• Salmonella contamination is present from the early stages of black pepper production through processing.
• Effective mitigation requires implementing good agricultural practices (GAP), good manufacturing practices (GMP), and Hazard Analysis and Critical Control Points (HACCP).
• Decontamination treatments should complement these practices to ensure final product safety.