The average ES was higher (93%) than that reported by Chavez,
Negri, Taverna, and Cuatrin (2004), where about one third of samples
had an ES less than 72%. All samples were above 74%, which is
the suggested limiting value for UHT processing (Shew, 1981).
Ethanol stability followed the same seasonal trend as RCT with
significantly higher values in spring than autumn.
Dry sediment formation followed a different trend with significantly
higher values in the summer and autumn compared to
the winter. However, the importance of this finding is not clear
as sediment in raw milk may be unrelated to other compositional
properties, being at least partly related to extraneous debris in the
milk (reference).
Foaming ability displayed the greatest range of all parameters
measured (8.5 times difference) and in common with the RCT
and ES, values were highest in the spring, in this case higher than
the other three seasons. (discussed in Section 3.3.7).