Chemical and sensory evaluations of energy bar made from purple sweet potatoes and tapioca flour with the addition of Sidempuan Salak (Salacca sumatrana (Becc.)) fruit

Sidempuan salak is a local fruit originating from South Tapanuli, North Sumatra. This fruit has a unique taste of sweet, sour and slightly astringent. This fruit can be consumed fresh or processed into several products, such as flour, drinks and sweets. This study aimed to develop a food-based energy bar from Sidempuan salak fruit (Salacca sumatrana (Becc.)). Energy bar formulation was done by blending purple sweet potato flour, tapioca flour, glucose syrup, egg albumen, coconut oil, salt, and...