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This study aims to determine the effect of increasing the percentage of super red dragon fruit peel and adding the percentage of yeast tape to antioxidant activity. The method used in the study of making cassava tape with antioxidant fortification using factorial randomized block design (RBD) which consists of 2 factors, the first factor consists of 3 levels and the second factor consists of 3. Of the two factors obtained 6 treatment combinations. Each treatment was repeated three times so that 18 treatment combinations were obtained. The tests included physicochemical tests (antioxidant activity, pH, color intensity) and organoleptic tests (color, aroma, taste, and texture). Analysis of physicochemical test data using ANOVA. If significantly different, then proceed with the Tukey test and to find the best treatment according to physicochemical parameters using the Zelleny method. Organoleptic test data analysis uses the Friedman test and to find the best treatment according to organoleptic parameters using the Effectiveness Index method. The results of this study indicate that the combination treatment of the addition of super red dragon fruit peels by 30% w / v and the percentage of yeast tape 0,4% w / w are the best results according to the physicochemical test parameters with characteristics: DPPH% Inhibition (83.115%), pH (4.53), color intensity L (50.2), color intensity a + (47.7), color intensity b + (12.32). The best treatment of organoleptic test was obtained from the combination of the treatment of the percentage of the addition of super red dragon fruit peels by 30% w / v and the percentage of yeast tape 0.4% w / w with the provision that the average value of the organoleptic test score was 3.97 (likes), aroma 3.77 (like), texture 2.77 (enough), taste 3.5 (like).

teknologi pangan : media informasi dan komunikasi ilmiah teknologi pertanian/teknologi pangan : media informasi dan komunikasi ilmiah teknologi pertanian

Pengaruh fortifikasi ekstrak kulit buah naga super merah (Hylocereus costaricensis) terhadap kandungan antioksidan tape singkong kuning (Manihot utilissima Pohl)