Abstract
In this work we evaluated the variability in fiber content and physical and chemical parameters of byproducts from orange juice extraction. Five different treatments and two drying methods were evaluated. The results indicate that drying by lyophilization was better than that drying in an oven. The pH ranged from approximately 3.47 to 3.96. The variation in moisture values was 9.22% ± 0.02 to 18.48 ± 0.52%. The total dietary fiber content in the resulting flours ranged from 42.44% to 62.74%. The soluble and insoluble dietary fiber contents differed among the samples, ranging from 5.04% to 19.95% for the first fiber type, and 23.96% to 57.70% for the second. In conclusion, three treatments, associated with freeze-drying, showed promising results in the development of fiber-rich product. However, some modifications are needed, as well as further analysis, to guarantee the benefits of these products for human health. This study contributes to the possible application of industrial byproducts.
Highlights
Among all the types of fruit trees, orange is one of the most well-known and widely studied worldwide
Pelleted citrus pulp flour or orange peel bran is an example of a processing byproducts obtained by the
The present study demonstrated that this step is crucial, and causes considerable percentage differences in TDF content of the studied product
Summary
Among all the types of fruit trees, orange is one of the most well-known and widely studied worldwide. Since the 1980s, Brazil has been the world’s largest producer of oranges and orange juice, and the country has more than a million acres of citrus plants. Pelleted citrus pulp flour or orange peel bran is an example of a processing byproducts obtained by the. T. Henriques treatment of solid and liquid waste resulting from the process of orange juice extraction (OJE) (Cutrale, 2012; Lousada et al, 2005). Henriques treatment of solid and liquid waste resulting from the process of orange juice extraction (OJE) (Cutrale, 2012; Lousada et al, 2005) Despite all these possibilities, industrial waste from orange juice remains mostly unused
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