Preparation and Characterization of Dietary Fiber-rich Powder from Pomelo Peel
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Abstract:
To comprehensively use the resources of pomelos, a dietary fiber-rich powder from pomelo peel was prepared and evaluated for its physicochemical properties and aromatic compounds. The result showed that the powder from pomelo peels was rich in dietary fibers, where the percentages of soluble, insoluble, and total dietary fiber were 9.88%, 59.49%, and 70.38%, respectively. The water-holding capacity, oil-holding capacity, and swelling capacity increased with particle size reduction. The water-holding capacity, oil-holding capacity, and swelling capacity of the superfine powder were found to be 12.41 g/g, 4.47 g/g, and 21.0 mL/g, respectively. All of these values were better than those of commercial cellulose. The naringin content of the powder was approximately 1.64 mg/g. This ensured the powder was not bitter and had certain bio-active properties. In addition, the powder preserved the unique aroma and flavor of pomelo. These characteristics indicated that pomelo peel powder is a rich source of dietary fiber and has physicochemical properties that make it suitable as an additive in various food products, especially to enhance the quality of high-fiber and low-calorie foods.
