Psychrofast Test Kit

Description

Why Pick Psychrofast?

Psychrotrophic bacteria, capable of thriving at refrigeration temperatures, are a primary cause of premature spoilage in pasteurized milk, significantly reducing its shelf-life. Conventional microbiological methods, such as aerobic plate counts and coliform testing, fail to detect these contaminants. Aerobic counts primarily enumerate mesophilic bacteria, while coliform tests target enteric species, leaving psychrotrophic populations undetected. This oversight often results in product spoilage before the use-by date, even when standard tests indicate low microbial counts and absence of coliforms . Existing dedicated methods for psychrotroph detection are impractical for routine quality control, requiring prolonged incubation periods of up to 10 days or, in modified protocols, 4 days.

The Psychrofast Test addresses these challenges by providing a rapid, reliable solution to detect gram-negative psychrotrophic bacteria in pasteurized milk and dairy products within 30 hours. This simple presence/absence test employs selective enrichment technology, combining targeted inhibition of gram-positive bacteria with a visual growth indicator. By enabling timely detection, the test supports proactive quality management, helping to mitigate spoilage risks and optimize product shelf-life in the dairy industry.

Procedure

Results

The presence of gram negative psychrotrops is indicated by a pink coloration in the tube. Refer to image below on the right

• Product Sheet