Seward paddle blender used in research on sampling method variance
Seward’s Stomacher 400 Circulator has been used in an evaluation of international sampling methods for the microbiological analysis of broiler carcasses after immersion chilling.
Different countries have adopted varying protocols for the detection of Salmonella on poultry carcasses during the slaughtering process and the study aimed to compare the methods.
The EU technique requires a 25g sample of neck skin which is then processed in 225mL of buffered peptone water in the laboratory paddle blender.
The US method involves rinsing the carcass in 400mL of buffered peptone and Stomaching the rinse fluid.
However, the Brazilian technique uses the Stomacher to process samples taken from the skin, muscle from the wings, neck and pericloacal tissue.
All methods were found to be equivalent for the detection of Salmonella and would produce data regarded as statistically similar, found the study.
