Lychee high sugar content is the biggest disadvantage in drying processes which limits the production of dried
lychee for snacks. Purple sweet potato was blended with lychee to develop new snacks using microwave drying
techniques. Optimal ingredients proportion and drying conditions were evaluated in terms of their influences on
product’s organoleptic properties (crispness and mouth feel) and quality attribute. The results showed that addition
of 4% potato starch to paste mixture improved the crispness of dried chips. Also, the optimum ratio between purple
sweet potato and lychee to produce desirable snacks was found to be 7:3 (W:W). In case of the drying parameters, the
high power density resulted in shorter drying time and chips with improved nutrients. Generally speaking the method
employed for the drying operation produced no browning throughout the experiments. Therefore, this research has
a good future for industrial application.