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Papers

Gluten-free bread formulated with Prosopis ruscifolia (vinal) seed and corn flours

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Pages 245-255 | Received 29 Jul 2009, Accepted 29 Sep 2009, Published online: 20 Apr 2010
 

Abstract

Vinal (Prosopis ruscifolia) is a wild leguminous tree found widely in the north of Argentina. Like other Prosopis, vinal can grow under extreme temperatures, in poor soils and can tolerate high saline conditions. Taking into account the high protein and gums contents of vinal seeds, a gluten-free bread was developed including them and corn flour. A central composite design involving vinal seed flour/corn starch ratio (X1) and corn flour/corn starch ratio (X2) was used, and second-order models for specific volume (Y1) and bread score (Y2), evaluated by an expert panel, were employed to generate response surfaces. In the optimum zone of response surfaces, a product with higher protein content (5.2 g/100 g) than gluten-free breads found in local commercial markets was obtained. Also, an interesting antioxidant activity (115 mg ascorbic acid equivalent/100 g) was found in optimized gluten-free bread.

Acknowledgements

Warmest appreciation is extended to Ing Victor Rozycki who ground P. ruscifolia pods in order to obtain the seeds, and to Lic. Maximiliano Presa and Dr. Hugo Taher who determined the aminoacid profile in vinal seed flour.

Declaration of interest: The present study was performed with the financial support of CAI+D projects (Universidad Nacional del Litoral, Santa Fe, Argentina). The authors report no conflicts of interest. The authors alone are responsible for the content and writing of the paper.

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