130933 20240202151703.0 doi 10.1016/j.ifset.2012.10.005 sideral 80578 ART-2013-80578 eng Luengo, E. Universidad de Zaragoza (orcid)0000-0002-5490-3542 Improving the pressing extraction of polyphenols of orange peel by pulsed electric fields 2013 The influence of pulsed electric field (PEF) treatment on the extraction by pressing of total polyphenols and flavonoids (naringin and hesperin) from orange peel was investigated. A treatment time of 60 μs (20 pulses of 3 μs) achieved the highest cell disintegration index (Zp) at the different electric field strengths tested. After 30 min of pressurization at 5 bars, the total polyphenol extraction yield (TPEY) increased 20%, 129%, 153% and 159% for orange peel PEF treated at 1, 3, 5 and 7 kV/cm, respectively. A PEF treatment of 5 kV/cm to the orange peels increased the quantity of naringin and hesperidin in the extract of 100 g of orange peels from 1 to 3.1 mg/100 g of fresh weigh (fw) orange peel and from 1.3 to 4.6 mg100 g fw orange peel respectively. Compared to the untreated sample, PEF treatments of 1, 3, 5 and 7 kV/cm increased the antioxidant activity of the extract 51%, 94%, 148% and 192%, respectively. The results of this investigation demonstrate the potential of PEF as a gentle technology to improve the extraction by pressing of polyphenols from fresh orange peel. This procedure enhances the antioxidant capacity of the extracts, reduces extraction times and does not require using organic solvents. info:eu-repo/semantics/closedAccess by-nc-nd http://creativecommons.org/licenses/by-nc-nd/3.0/es/ 2.248 2013 FOOD SCIENCE & TECHNOLOGY 33 / 121 = 0.273 2013 Q2 T1 info:eu-repo/semantics/article info:eu-repo/semantics/acceptedVersion Alvarez, I. Universidad de Zaragoza (orcid)0000-0003-2430-858X Raso, J. Universidad de Zaragoza (orcid)0000-0003-3957-9091 2008 780 Universidad de Zaragoza Dpto. Produc.Animal Cienc.Ali. Área Tecnología de Alimentos 17 (2013), 79-84 Innov. food sci. emerg. technol. INNOVATIVE FOOD SCIENCE & EMERGING TECHNOLOGIES 1466-8564 327074 http://zaguan.unizar.es/record/130933/files/texto_completo.pdf Postprint 2928833 http://zaguan.unizar.es/record/130933/files/texto_completo.jpg?subformat=icon icon Postprint oai:zaguan.unizar.es:130933 articulos driver 2024-02-02-14:47:20 ARTICLE