Characteristics of Marshmallow from a Mixture of Watermelon Albedo (Citrullus vulgaris Schard) and Rosella Flower (Hibiscus sabdariffa) Extract with The Addition of Gelatin

Abstract

Watermelon albedo is a food waste that still has nutrients that can be used. The presence of nutritional compounds causes watermelon albedo potential to be processed into marshmallow products. The addition of rosella flower extract was expected to improve the sensory properties of the marshmallow. This study aims to determine the effect of the ratio of watermelon albedo juice to the rosella flower extract and the impact of the addition of gelatin on the characteristics of marshmallows. This study used a completely randomized design (CRD) with two factors, namely the proportion of watermelon albedo juice: rosella flower extract (60:40, 70:30, 80:20) and the addition of gelatin (10%, 12%, 14%). The data obtained were statistically analyzed using analysis of variance (ANOVA) and continued with Duncan's test (DMRT). The best treatment was obtained in the treatment of the proportions of watermelon albedo juice: rosella flower extract (70:30) with the addition of 14% gelatin which produced marshmallows with a characteristic moisture content of 24.33%; ash content 1.06%; vitamin C content 16.67 mg/100g; antioxidant activity 19.56%; reducing sugar content of 23.15%; hardness 1.07 N; lightness -15,7; redness 5,45; yellowness 0,95 the average value of color preference is 3.50 ( like); aroma 3.45 ( rather like); taste 2.95 (neutral); and texture 3.85 ( like).