Article Abstract:
Research was conducted to develop a simple and reliable technique that could be used to pasteurize water and milk with solar energy. The method could be used primarily in developing countries but can also be used in emergency situations elsewhere. Two reflectors were used to evaluate the effect of enhanced solar reflection on clear containers as compared to that of unreflected clear bottles. The cardboard reflector directs sunshine onto a black jar and heats water to pasteurizing temperatures in several hours.
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Article Abstract:
The effect of minimal high-temperature, short-time (HTST) parameters of milk pasteurization on the thermotolerance of Listeria monocytogenes was assessed. Subjecting L. monocytogenes to 71.7 degrees celsius for 15 seconds resulted in a small increase in thermotolerance. However, statistical analysis of mean D values showed that the increase in survival was not statistically significant, suggesting that the minimal HTST pasteurization guidelines do not result in an increased risk for Listeria survival.
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Article Abstract:
A research was conducted determine the optimal time and temperature conditions for the effective killing of Mycobacterium paratuberculosis in inoculated raw milk. Fecal samples were cultured twice within a six month period for M. paratuberculosis. The holder test tube and the lab-scale pasteurizer heat inactivation methods were also compared. Results indicated that the transmission of viable M. paratuberculosis from animals to human through pasteurized dairy products is unlikely.
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