Publications on time/temperature to destroy salmonella in grain
Ive been looking all over for any publications on time/temperature to destroy salmonella in grain. Can someone please lead me in the right direction or post a link of publications. Thanks.
Hi,
Maybe this literature is helpful
Attached Files
Ive been looking all over for any publications on time/temperature to destroy salmonella in grain. Can someone please lead me in the right direction or post a link of publications. Thanks.
Dear dustishere.
can you supply a little context ?
eg you you mean grain in bulk like in a silo ?
Or within a specific process step ?
Or ?
Rgds / Charles.C
Dear dustishere.
can you supply a little context ?
eg you you mean grain in bulk like in a silo ?
Or within a specific process step ?
Or ?
Rgds / Charles.
What we have is a soup mixture we pour over groundup corn, then we run in through the dryer. Dryer inlet temp is 265 and exhaust temp is 133. We do know that roughly 1 1/2 ton of product flows through the dryer in an hour, so its a slow drying process.
What we have is a soup mixture we pour over groundup corn, then we run in through the dryer. Dryer inlet temp is 265 and exhaust temp is 133. We do know that roughly 1 1/2 ton of product flows through the dryer in an hour, so its a slow drying process.
degC or degF ?
average residence time in drier = ?
Either way I expect you are going to need some internal temperature/time distribution data, especially at the coolest point of the drier.
to illustrate the variations with product type/food matrix, here is a typical scenario for heat inactivation of salmonella in poultry -
COMPLIANCE GUIDELINES FOR RTE MEAT AND POULTRY.doc 313KB 18 downloads
Can see that for core temperatures of 65 >70degC (+) the time for 6-7D (= "elimination") drops from approx 1.5min to "instantaneous".
Now compare the data for corn / wheat flour (eg table 6.1) in this document (also summarised in post #2's attachment) -
SalmonellaControlGuidance.pdf 541.8KB 43 downloads
Can see that the 6-7D times are much higher for the grain samples / salmonella species used and sensitive to aw, etc .
Rgds / Charles.C
degC or degF ?
average residence time in drier = ?
Either way I expect you are going to need some internal temperature/time distribution data, especially at the coolest point of the drier.
to illustrate the variations with product type/food matrix, here is a typical scenario for heat inactivation of salmonella in poultry -
COMPLIANCE GUIDELINES FOR RTE MEAT AND POULTRY.doc
Can see that for core temperatures of 65 >70degC (+) the time for 6-7D (= "elimination") drops from approx 1.5min to "instantaneous".
Now compare the data for corn / wheat flour (eg table 6.1) in this document (also summarised in post #2's attachment) -
Can see that the 6-7D times are much higher for the grain samples / salmonella species used and sensitive to aw, etc .
Rgds / Charles.C
Sorry, the temperatures are degF. And product temperature at the end of the dryer is between 120-130 degF
We have never had a postive test come back for salmonella, but the auditor wants us to supply litature or a time/temperature table that our dryer temps are effective.