CONTROL INDICATORS FOR THE EXAMINATION OF PORK FOR TRICHINELLA-SPIRALIS BY THE ACID-PEPSIN DIGESTION METHOD

Artificial digestion using an acidified pepsin solution is one of seve ral methods of examination of meat for the presence of Trichinella spi ralis larvae. Indicator devices, which serve as visible 'positive' and 'negative' controls, have been developed for use in this digestion me thod. The indicators are color-coded, red and blue, modified-collagen membranes. One each of the red and blue colored membranes are added to the solution along with the sample. The digestion of the blue indicat or and the retention of the red indicator are established as criteria that the process is within acceptable limits.