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Please use this identifier to cite or link to this item: http://hdl.handle.net/123456789/10813

Title: Effect of Pre-treatment and Drying on the Nutritional and Mineral Composition of D. bulbifera flour
Authors: Sanful, RE
Oduro, I
Ellis, WO
Keywords: processing
solar drying
Minerals
nutrients
potato yam
Issue Date: Jun-2013
Publisher: Online Research Journals
Citation: ISSN 2277-0828; Volume 2, Issue 4, pp 37-44; June, 2013 Journal of Biological and Food Science Research
Abstract: The effect of pre-treatment and drying methods on the nutritional and mineral composition of the aerial yam (Dioscorea bulbifera) was evaluated. Flours were obtained by subjecting the yam to different pre treatment and processing methods (grating, steaming, bo iling, solar and oven drying). They were dried, milled and sieved. The flours obtained were evaluated for their mineral and nutritional compositions. Between the different processing methods, the flour samples had mineral contents ranging from 34.2 to 42.3mg/100g phosphorus; 78.0 to 149.0mg/100g calcium; 8.2 to 10.2mg/100g iron; 51.7 to 89.1mg/100g sodium; 1026.6 to 1467.6mg/100g potassium and 53.33 to 138.67mg/100g ascorbic acid. The nutritional content ranged from 8.77% to 12.45% moisture, 0.84% to 1.91% protein, 0.49% to 1.77% fat, 2.97% to 3.88% ash, 0.94% to 2.17% fibre and 79.64% to 84.23% carbohydrates. The results in this study indicate that the grated and solar dried samples were able to maintain much more ascorbic acid than the other treatment methods. For both phosphorus and sodium the grated and oven dried samples maintained more minerals than the other methods. The drying methods affected the nutritional content of the yam flour. It was also observed that pre-treatment and processing enhanced nutrient availability in the flour samples. Overall boiling and solar drying did not significantly change the amount of minerals in Dioscorea bulbifera.
Description: This article was published in ISSN 2277-0828; Volume 2, Issue 4, pp 37-44; June, 2013 Journal of Biological and Food Science Research
URI: http://hdl.handle.net/123456789/10813
ISSN: 2277-0828
Appears in Collections:College of Science

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