Development of Crispy Dragon Fruit Peel-sheet Product

Abstract

The objectives of this research were to investigate: 1) the effects of fortified black sesame on the quality of the product, 2) the types of seasoning powder on the  consumer acceptance towards the product,  and 3) the the chemical compositions and nutritional properties of the product. Four formulae of the crispy dragon fruit peel-sheet product were prepared by mixing different percentages of black sesame to the boiled fine ground dragon fruit peels at 0, 1, 1.5, and 2 percent respectively. The physical, chemical properties, color (L* a* and b*), pH, water activity (Aw), and sensory evaluation were analyzed. The results were selected for the appropriate recipes to study the acceptance of consumers per each type of seasoning powder. The sensory evaluation was carried out with a group of forty trained panels who were students and lecturers in Home Economics Beanch, Faculty of Agricultural and Industrial Technology, Phetchabun Rajabhat University). The Nutritional composition and energy of crispy dragon fruit peel-sheet fortified with black sesame product were analyzed.

The results showed that the amount of black sesame had an effect on the chemical and physical quality of the dragon fruit peel products. The increasing amount of black sesame in the dragon fruit peel products resulted in the decrease in the color (L* a*  b*) (p ≤ 0.05) while pH and water activity (Aw) were increased (p ≤ 0.05). The sensory evaluation suggested that Formula 3 (added with 1.5% black sesame) had the highest acceptability for color, flavor, taste, and overall liking. In addition, the types of the seasoning powder were evaluated using Hedonic ratings for the sensory attributes and found that the highest acceptability for the color, flavor, taste, crispness, and overall liking was on paprika seasoning powder. In conclusion, the best formula for the crispy dragon fruit peel-sheet product fortified with black sesame of 100 gram contains 2.98 grams of moisture, 7.88 grams of ash, 5.64 grams of protein, 26.29 grams of fat, 23.73 grams of dietary fiber, and 33.48 grams of carbohydrates, and provides a total energy of 393.09 kcal.