Thermo Scientific™ Oxoid™ Buffered Peptone Water (Dehydrated)

Thermo Scientific™ Buffered Peptone Water (BPW) is a non-selective pre-enrichment medium formulated to recover and resuscitate sub-lethally injured Salmonella spp. from food samples prior to selective enrichment. This medium provides optimal conditions for bacterial repair and multiplication, increasing the likelihood of Salmonella isolation in compliance with international microbiological testing standards.

Prepared from high-quality peptone and phosphate buffer, BPW supports rapid recovery by neutralizing acidic conditions that may harm injured pathogens—especially during food processing and preservation methods such as freezing, dehydration, or thermal exposure.

Key Features

• Supports recovery of sub-lethally injured Salmonella spp.
• Non-selective formulation allows bacterial repair prior to selective culturing
• Phosphate buffer system stabilizes pH during incubation
• High nutrient content ensures vigorous bacterial growth
• Maintains pH during incubation, unlike lactose broth, which may drop rapidly
• Suitable for food microbiology testing, including meat, poultry, and frozen vegetables
• For laboratory use only

Scientific Applications

• Pre-enrichment of food samples before selective enrichment for Salmonella
• Detection and recovery of injured or stressed bacterial cells
• Routine food safety testing in compliance with ISO and FDA standards
• Recovery of pathogens from low-buffering matrices such as vegetables
• Use in microbiological surveys, including meat and produce safety

Referenced Literature

• Edel W. & Kampelmacher E.H. (1973), Bull. Wld Hlth Org. 48: 167–174
• Sadovski A.Y. (1977), J. Food Technol. 12: 85–91
• Angelotti R. (1963), Microbiological Quality of Foods, Academic Press, p.149

Technical Specifications

Available Pack Sizes

Thermo Scientific™ Buffered Peptone Water is an essential medium in food microbiology workflows, providing a protective, non-selective environment for the resuscitation of injured Salmonella cells before selective culturing. With high nutrient content, excellent pH stability, and consistent recovery rates, it is trusted by labs worldwide for accurate detection of foodborne pathogens in regulatory and industrial testing environments.