The purpose of this research was to determined the optimal formulation inudthe production of red dragon fruit jelly powder made from raw and addedudmaterial, such as (dragon fruit skin, flesh of dragon fruit, carrageenan, citricudacid, albumin) and to know red dragon fruit jelly powder characteristic.ud The research was devided into two steps. Preliminary research wasudcalculated the sugar content in the raw material. In primary research wasudobtained optimal formulation throuhgh Design Expert program.ud Optimal formulation of red dragon fruit jelly powder was fruit skinud24.845%; flesh of dragon fruit 33.430%; carrageenan 4.234%; 9.183% albumin,udso the program Design Expert D-Optimal method can be used to determine theudoptimal formulation of a product.ud Optimal formulation which was predicted by the program Design Expert udwas moisture content of 4.989%; 4.488% crude content; pH 5,338; colour 4,442; ud4,089 odor; sense 3.829 and texture 3.738. Optimal formulation of red dragonudfruit jelly powder contain a disaccharide sugar content of 21.82% and 33.72%udtotal sugar content, and antioxidant activity of 3218.43 ppm.udKeywords: dragon fruit, Design Expert program, formulation.
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