Although cocoa raw materials have been considered a possible
source of Salmonella , in the present
study cocoa-based ingredients showed a low percentage of
contamination by the bacteria groups investigated (<1%). Based on
the results, cocoa liquor could be indicated as one of the likely
contamination sources of only one chocolate milk sample from
company B. In a previous study, a slightly higher percentage
of Enterobacteriaceae contamination (7%) was found in the
same kind of product collected directly from the cocoa processor
industry.Neither nor
ICMSF (2011) establish Enterobacteriaceae limits for cocoa liquor or
cocoa butter. However, if the ICMSF's guiding values for the end
product are used as a means of comparing the results, the detection
of Enterobacteriaceae count above 2 log cfu/g, even in one sample,
would suggest a possible failure in the supplier's quality assurance
system. As only the cocoa raw materials were evaluated, it is not
possible to rule out the possibility of some other ingredient playing
an important role as a contamination vehicle of the end product.
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