Bosch Juan, LourdesDea Ayuela, María AuxiliadoraRico Vidal, HortensiaSoriano del Castillo, José MiguelProducción Científica UCH 2020UCH. Departamento de Farmacia2021-12-012021-12-012020-10-01Bosch, L., Dea-Ayuela, M.A., Rico, H. & Soriano, J.M. (2020). Organic and conventional tiger nut (Cyperus esculentus) : differences in nutritional, antioxidant and microbiological properties. Emirates Journal of Food and Agriculture, vol. 32, i. 10 (oct.), pp. 756-761. DOI: https://doi.org/10.9755/ejfa.2020.v32.i10.21840023-6438http://hdl.handle.net/10637/13238Este artículo se encuentra disponible en la siguiente URL: https://www.ejfa.me/index.php/journal/article/view/2184Tiger nut (Cyperus esculentus L.), also known as chufa (European sedge), is a member of the Cyperaceae family, which is used in organic and conventional agriculture for its small edible tubers and grown in temperate and tropical zones of the world being consumed raw, roasted or pressed for its juice as beverage. The aim of this study is analyzing the proximate composition (AOAC methods), total phenolic content (Folin-Ciocalteu method), total antioxidant capacity (Trolox equivalent antioxidant capacity, TEAC) and microbiological profile (International Standard Organization norms, ISO) of samples of Spanish organic and conventional, Nigerian conventional and unknown origin tiger nuts obtained from supermarkets and local markets in Spain. No significant differences in proximate composition and antioxidant properties were found between Spanish organic and conventional tiger-nuts, except in total phenolic level (p<0.005). No significant differences were found in all samples about ash, lipid, total sugar and carbohydrate values, but significant differences (p<0.005) were found for moisture, protein, fiber and antioxidant capacity between Spanish samples and Nigerian or unknown origin samples. No coagulase-positive staphylococci, nor Salmonella spp. were detected in any of the studied samples. Significant differences (p<0.005) were found for moulds and yeasts between analysed samples, but no significant differences were detected in other microorganisms.application/pdfesopen accessTiger-nut - Microbiology.Plants, Edible - Properties.Antioxidantes.Antioxidants.Chufa - Microbiología.Chufa - Propiedades.Tiger-nut - Properties.Plantas comestibles - Propiedades.Artículohttps://doi.org/10.9755/ejfa.2020.v32.i10.2184https://creativecommons.org/licenses/by-nc-nd/4.0/deed.es