I have no background in microbiology and I need to understand some results that I just received back from the lab. The product is raw fish packaged in a oxygen permeable packaging. Has been always shipped out as 7 days shelf life.
So here is where the confusion comes in: day 4 organoleptic analysis is normal and Aerobic plate count >57,000 est CFU/g; day 5 organoleptic analysis abnormal and aerobic plate count >57,000,000 est CFU/g ... day 8 the organoleptic analysis is still abnormal, but the aerobic plate count drops to 3,000,000 CFU/g. The lactic acid bacteria starts going higher on day 5 which is 250 CFU/g. The pH is constant above 6 and the water activity 0.98.
Why the aerobic plate count differ so much from day 7 to day 8?!
I appreciate your help.