The aqueous solution of stevia amino acid sweeteners showed
good stability over a wide range of pH values and temperatures.
The thermal treatment in a pH range of 2.5–9 for 2 h showed
good stability and no degradation (decomposition) occurred at
60 C and 100 C. Accordingly, the application of stevia amino
acid sweeteners as a sweetening agent might be suitable or
recommended in baking and other processes involving thermal
treatment within the tested temperature range. Buckenhuskers
and Omran (1997) reported that stevioside has excellent heat
stability up to 100 C for 1 h at pH range 3–9, but rapid
decomposition occurs at pH level greater than 9 under these
conditions.