Only two soluble sugars, lactose and sucrose, were
found in these four broth cubes and contents of the two
sugars were higher in chicken and pork broth cubes than
in mushroom and seafood broth cubes (Table 2). Soluble
sugars and polyols usually contribute a sweet taste (Litchfield,
1967). However, only 8.26–16.8 mg g1 of sugars
would give a relatively weak sweet perception. After the
soup was made, the total sugar concentration was calculated
to be 0.53–1.08 mM, much less than the sucrose
detection threshold of 100 mM (Li et al., 2002). It seems
that the sweet perception would be insignificant.