CONCLUSION
Thermal treatment affects the heat stability of milk
tremendously. It can be concluded that pH, with its positive
correlation, is the most important factor influencing heat
stability. The alcohol test indicated that goat milk exhibited
a markedly lower ethanol stability than cow milk. The heating
temperature also plays a vital role in affecting heat stability:
the higher the heating temperature, the poorer the heat
stability. In addition, some additives added before UHT
treatment can also change the heat stability of milk. The
application of calcium had a negative effect on the heat
stability of milk, while the concentrations of EDTA-2Na,
phosphate and citrate were positively correlated with heat
stability. Moreover, the results showed a special relationship
between heat stability and sucrose concentration. The heat
stability of milk increased as the sucrose concentration
incr eased fr om 10% t o 30%, but decreased as the
concentration of the sucrose increased above 30%. In the
present study, the influence of all these factors except for
sodium citrate confirmed that goat milk is less stable after
heat treatment than cow milk. For sodium citrate, the heat
stability of goat milk was better than cow milk, with ANOVA