4. Conclusions
The soy sauce yeast strains could accumulate more trehalose under salt and heat shock. But the optimal salt
stimulate concentration was different: the wild yeast strains could accumulate most in corn juice in 9% salt,
while the mutants in 12% salt. And the yeasts coule not accumulate more trehalose under a higher salt. In
general, the mutant yeast strains could accumulate less trehalose than the original, even though S3-2 and T3-5
have a stronger resistance to salt, so a conclusion could be made that trehalose had little relationship with the
salt tolerance of the soy sauce yeast strains.