Liha töötlemine
protein, carbohydrate, and lipid. The protein States, there were 57 outbreaks and 2,772
moiety determines antigenicity, the carbohy- cases, with no deaths reported. It is estimated,
drate moiety determines immunologic speci- however, that 250,000 cases occur annually,
ficity, and the lipid moiety causes toxicity. with an average of 7.6 deaths per year at an
488 Chapter 28
annual cost of $123 million to the U.S. indicator of fecal contamination in recre-
economy. C. perfringens is a Gram-positive ational water. Fung et al. (2007) developed
anaerobic spore-forming rod and produces at the Fung Double Tube (FDT) system, which
least 13 different toxins, which can cause can detect live C. perfringens in the tubes
diseases such as gas gangrene. One of the about 5 hour after sampling the seawater. The
toxins is named Clostridium perfringens generation time (time for doubling of a popu-