caa a22 4500 463156188 CHVBK 20180406164735.0 cr unu---uuuuu 170326e20070901xx s 000 0 eng 10.1007/s00217-006-0500-0 doi (NATIONALLICENCE)springer-10.1007/s00217-006-0500-0 Effect of technological processes and storage on flavonoids content and total, cumulative fast-kinetics and cumulative slow-kinetics antiradical activities of citrus juices [Elektronische Daten] [Enrique Sentandreu, José Navarro, José Sendra] Juices from the mandarin Clemenules (Citrus clementina Hort. ex Tan.), the tangor Ortanique (Citrus reticulata Blanco×Citrus sinensis Osb.) and the sweet orange Valencia Late (Citrus sinensis) have been industrially squeezed, pasteurized, concentrated and stored under refrigeration (4°C) and at room temperature (20°C). After each process, the flavanone-7-O-glycosides (FGs) and fully methoxylated flavones (FMFs) contents as well as total, cumulative fast-kinetics and cumulative slow-kinetics antiradical activities were determined and compared with those from the corresponding fresh hand-squeezed juices. Neither industrial-squeezing, nor pasteurization or concentration significantly affected FGs and FMFs contents and antiradical activities of assayed juices. Storage caused a slight decrease of the FMFs contents but a significant reduction of both soluble hesperidin contents and cumulative fast-kinetics antiradical activities in all assayed juices. These decreases were dependent on storage temperature. Characteristic values of the varietal characterization parameters, which are derived from the FMFs contents and antiradical activities of fresh hand-squeezed juices, held valid for industrially squeezed, pasteurized and concentrated juices. After storage, however, only the FMFs-derived varietal characterization parameters and cumulative slow-kinetics antiradical activity remained valid for the resulting juices. Springer-Verlag, 2006 Citrus juices nationallicence Industrial processes nationallicence Storage nationallicence Antiradical activity nationallicence Flavanone-7- O -glycosides nationallicence Fully methoxylated flavones nationallicence AA : Ascorbic acid nationallicence ABTS•+ : 2,2-Azinobis-(3-ethylbenzothiazoline)-6-sulphonate nationallicence CMN : Clemenules cultivar nationallicence DID : Didymin nationallicence DPPH• : 2,2-Diphenyl-1-picrylhydrazyl nationallicence FAA : Fast-kinetics antiradical activity (mmoll−1, molar equivalents of AA) nationallicence FG : Flavanone-7-O-glycoside nationallicence FMF : Fully methoxylated flavone nationallicence GOS : Hexamethyl-O-gossypetin nationallicence HEP : Heptamethoxyflavone nationallicence HES : Hesperidin nationallicence IS1 : Internal standard for FGs (o-coumaric acid) nationallicence IS2 : Internal standard for FMFs (flavone) nationallicence k 1 : Average rate constant of cumulative FAA (lmol−1min−1) nationallicence k 2 : Average rate constant of cumulative SAA (lmol−1min−1) nationallicence LDL : Low-density lipoprotein nationallicence NAR : Narirutin nationallicence NOB : Nobiletin nationallicence ORT : Ortanique cultivar nationallicence QUE : Hexamethyl-O-quercetagetin nationallicence SAA : Slow-kinetics antiradical activity (mmoll−1, molar equivalents of AA) nationallicence SCU : Tetramethyl-O-scutellarein nationallicence TAA : Total antiradical activity of juice (mmoll−1, molar equivalents of AA) nationallicence VAL : Valencia Late cultivar nationallicence y : Time-dependent concentration of DPPH• (μmoll−1) nationallicence y 1 : Asymptotic value of the DPPH• concentration (μmoll−1) due solely to the cumulative FAA of juice nationallicence y 2 : Asymptotic value of the DPPH• concentration (μmoll−1) due solely to the cumulative SAA of juice nationallicence y 0 : Initial concentration of DPPH• (μmoll−1) nationallicence y s : Experimental asymptotic value of the DPPH• concentration (μmoll−1) due to TAA nationallicence ρ 1 : Adjustable parameter (=k 1/σ 1, lmol−1min−1) nationallicence ρ 2 : Adjustable parameter (=k 2/σ 2, lmol−1min−1) nationallicence σ 1 : Average stoichiometric constant of cumulative FAA nationallicence σ 2 : Average stoichiometric constant of cumulative SAA nationallicence Sentandreu Enrique Instituto de Agroquímica y Tecnología de Alimentos, P.O. Box 73, 46100, Burjassot, Valencia, Spain aut Navarro José Instituto de Agroquímica y Tecnología de Alimentos, P.O. Box 73, 46100, Burjassot, Valencia, Spain aut Sendra José Instituto de Agroquímica y Tecnología de Alimentos, P.O. Box 73, 46100, Burjassot, Valencia, Spain aut European Food Research and Technology Springer-Verlag 225/5-6(2007-09-01), 905-912 1438-2377 225:5-6<905 2007 225 217 https://doi.org/10.1007/s00217-006-0500-0 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s00217-006-0500-0 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Sentandreu Enrique Instituto de Agroquímica y Tecnología de Alimentos, P.O. Box 73, 46100, Burjassot, Valencia, Spain aut NATIONALLICENCE 700 1- Navarro José Instituto de Agroquímica y Tecnología de Alimentos, P.O. Box 73, 46100, Burjassot, Valencia, Spain aut NATIONALLICENCE 700 1- Sendra José Instituto de Agroquímica y Tecnología de Alimentos, P.O. Box 73, 46100, Burjassot, Valencia, Spain aut NATIONALLICENCE 773 0- European Food Research and Technology Springer-Verlag 225/5-6(2007-09-01), 905-912 1438-2377 225:5-6<905 2007 225 217 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer