Distribution of Soluble Filth in Shrimp During Processing.

The objective of this research was to evaluate the distribution of soluble filth in shrimp during different stages of processing. Flies, fed a radioactive glucose isotope, were added to five pounds of headless shell-on shrimp tails (green-headless) and also to five pounds of peeled and deveined shrimp tails. The shrimp were blast frozen as five pound blocks, glazed with distilled water and stored for 10 d at -26°C. After thawing, washing, and rinsing, 44.4% of the total radioactivity from the added flies remained on the green-headless shrimp. Reconditioning of the peeled and deveined shrimp through thawing and multiple washings resulted in 18.2% retention of total activity. Even though cooking caused an additional 8.2% loss of activity, the cooked shrimp still had 10% of the original radioactivity associated with it.