The sample with
1 g inulin/100 mL milk and the control had the highestfirmness
values of 1.90 and 1.72 N, respectively. These two samples might
have high enough and just-right TSS and TS contents, thus giving
samples with higherfirmness in comparison with other samples.
Guven et al. (2005)also mentioned that curd stability is influenced
by TS and protein contents. Nevertheless,firmness of yoghurt can
be substantially decreased if the TS content exceeds the appropriate
value.