The untreated (raw) full cream (RM) milk was of good quality: RM
passed the alcohol test (72% ethanol v/v) and the clot-on-boiling test,
and tested negative for antibiotic residues (Kundrat test). Furthermore
the Somatic Cell Count of the milk also conformed to Regulation
R1555, and results on average were below 300,000 somatic cells per
millilitre of milk tested (Foss Somatic Cell Counter, Elsenburg, SA). The
average log (cfu.ml−1) microbial counts of the untreated (raw) full
cream milk was as follows: Aerobic Plate Count (APC), 5.41; Coliform
Count 1.80; Aerobic Mesophilic Spores (AMS), 0.95; Anaerobic