<![CDATA[The aim of this research was to find the effect of stabilizer type and stabilizer concentration on the quality of red guava and soursop fruit leather. The research was conducted at the Laboratory of Food Technology, Faculty of Agriculture, University of Sumatera Utara, Medan, using completely randomized design with two factors, i.e. : stabilizer type (J) : (CMC, Gelatin, Arabic gum, Pectin) and stabilizer concentration (K) : (0,6% ; 0,8% ; 1,0% ; 1,2%). Parameters analyzed were moisture content, ash content, total soluble solid, vitamin C content, total acid, organoleptic score of color, taste and texture and organoleptic hedonic values of color, taste, flavor and texture.The results showed that the stabilizer type had highly significant effect on moisture content, total soluble solid, score of color, taste, and texture, and hedonic values of flavor, taste, and texture. Stabilizer concentration had highly significant effect on moisture content, ash content, total soluble solid, vitamin C content, total acid, and had significant effect on organoleptic hedonic values of texture. Interaction of the two factors had highly significant effect on organoleptic score values of texture and had no effect on moisture content, ash content, total soluble solid, vitamin C content, total acid, curb fiber content, scores of color, taste and texture, and hedonic values of flavor, taste and texture. The stabilizer type (Arabic gum) and stabilizer concentration (1,2%) produced the best quality of fruit leather and more acceptable. Keywords : Fruit leather, Red guava, Soursop, Stabilizer]]>
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