Rona Tsaniya, Lukluk and Ayustaningwarno, Fitriyono and Sandi Wijayanti, Hartanti and Anjani, Gemala Effect of Seaweed Addition (Eucheuma cottonii) on Nutritional and Physical Properties of Red Dragon and Watermelon Albedo Fruit Leather. -. (Unpublished)

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Abstract

Background: Fruit leather is a processed fruit contains benefical properties for human health, has long shelf life, and can be consumed as jam subtitute. Red dragon fruit and watermelon can be processed to be fruit leather. Seaweed (Eucheuma cottoniit) addition is expected to increase nutritional and physical properties because it contains kappa carrageenan and 35.3 mg/100 g vitamin C, 9.76% protein, 1.10% fat, dan 26.49% carbohydrate, also 46.19% ash.
Objective: To analyze effect of seaweed addition on nutritional and physical properties and determine the best formulation.
Method: A completely randomized experimental study with one factor, namely variations in the seaweed addition in 0%, 10%, 20%, and 30%. vitamin C was analyzed using spectrophotometer, moisture was analyzed using Thermogravimetri, ash was analyzed using dry ash procedure, protein was analyzed using Kjeldahl, fat was analyzed using Soxhlet, carbohydrate was analyzed using by difference, water activity was analyzed using aw meter, and tensile strength was analyzed using texture analyzer. Nutritional and physical data were analyzed by one-way anova or kruskall wallis. Best formulation was determined by multiattribute decision using compensatory model (additive weighting technique).
Results and discussion: The addition of seaweed increased moisture, ash, protein, vitamin C content, water activity, tensile strength, and elongastion, but decreased carbohydrate, meanwhile fat content showed no difference. Fruit leather contens is better than commercial jam. 30% seaweed addition fruit leather became the best formulation
Conclusion: seaweed addition affects nutritional and physical properties, except fat content. 30% seaweed additionfruit leather is the best fruit leather formulation.

Keywords: Fruit leather, red dragon fruit, watermelon rind, moisture content, Eucheuma cottonii, nutritional contents, physical properties.

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