Abstract
The recovery of effluents for different uses is an interesting practice that can contribute to a better management of water resources all over the world. Tiger nuts or “chufa” (Cyperus esculentus) are tubers mainly used to produce “horchata de chufa” (tiger nuts milk), yielding a high quantity of co-products (solids and liquids). The composition of these co-products makes them suitable for other uses. The aim of this work was to study the composition, microbial quality, physicochemical properties, and antioxidant activity of the “horchata” drained-water. The obtained results prove that “horchata” drained-water could be considered a valuable source of natural antioxidants. A good correlation between total phenol content and reducing power, rancimat performance, and inhibition of lipid peroxidation of buffered egg yolk assays supports the idea that phenols may be the main contributors to the antioxidant power of “horchata” drained-water. However, its microbial quality is poor, so this liquid residue must be heat-treated before its addition to any food product.
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Acknowledgments
The authors acknowledge the economic support from Caja Mediterráneo (CAM). The authors also wish to thank Consejo Regulador de la Denominación de Origen “Chufa de Valencia” and Heladería-Horchatería Navia for kindly providing the vegetable residue samples for use in the study.
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Sánchez-Zapata, E., Fuentes-Zaragoza, E., Viuda-Martos, M. et al. Reclaim of the By-Products from “Horchata” Elaboration Process. Food Bioprocess Technol 5, 954–963 (2012). https://doi.org/10.1007/s11947-010-0486-2
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DOI: https://doi.org/10.1007/s11947-010-0486-2