Quality and safety assessment of Egyptian marketed flavoured uht milk : a survey study for sanitary monitoring

الملخص EN

A total of 120 flavoured UHT milk samples (200 ml) of two flavours (strawberry
and mango) from three commercial plants (Brand A, brand B and non-branded plants) 20 samples of
each flavoured UHT milk carton packaged were purchased from different markets, 6 October city,
Egypt in 2017 and 2018.

Results showed that, the pH and acidity recorded were consistent with the
Egyptian Organization for Standardization and Quality (Ecorys) Specification, 2005.

Antibiotics were
present in 5% of brand A mango samples and was clear in the non-branded milk being 10% and 15%
in strawberry and mango milks, respectively.

Formaldehyde was completely ent from all samples
investigated, but hydrogen peroxide was detected in the non-branded mango and strawberry milk and
valued as 20% and 5% , respectively.

Microbiological results revealed that total bacterial count (TBC)
was not detected from any of the branded mango and strawberry UHT milk but a ratio of 15% of the
non-branded strawberry milk samples was detected.

Salmonella was completely ent in branded
UHT milk samples.

Coliforms not detected in brand A and B samples but 5% of mango and 10% of
strawberry of non-brand milk samples were contaminated with coliforms.

Yeasts and moulds were
only detected in the non-branded UHT flavoured milk (5% of mango and 15% of strawberry).

Fat
content recorded range among all samples (1.6% -1.81% ) were not consistent with the Ecorys
Specification, 2005 (3% ).

TS and SNF values were consistent with the Egyptian UHT milk
Specification (≥15% ) and protein values were within the accepted range.