<![CDATA[Purple sweet potato is one type of sweet potato that is widely grown in Indonesia. Sweet potatoes are basically rich in carbohydrates, minerals, and vitamins, but poor in protein and fat. To enrich the nutritional content, especially the fiber content of sweet potatoes, can be added from beans, one of them is green beans. Observing the high nutritional and fiber content of purple sweet potatoes and green beans, it can be a new innovation and sponge cake products can be made as a high-fiber functional food. This study used an experimental method with a completely randomized design (CRD) using 3 treatments which were then tested for organoleptic acceptance, water content, and fiber content testing. The results showed that the proportion of addition of green bean flour (Vigna Radiata L) did not affect the acceptability or receptivity of color, aroma, taste, and texture. The results of the water content test of sponge cake products in the control treatment without the addition of green bean flour (0%) had an average water content of 42.66%, treatment 1 with the proportion of adding green bean flour (15%) had an average water content of 43 ,44%, and in treatment 2 with the addition proportion of green bean flour (30%) has an average moisture content of 36.99%. The results of the calculation of the fiber content of sponge cake products in the control treatment without the addition of green bean flour (0%) had a total of 1.62 grams, treatment 1 with the proportion of addition of green bean flour (15%) had an amount of 2.19 grams, and 2 with the proportion of addition of green bean flour (30%) has a total of 2.76 grams.]]>
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