naa a22 4500 510727220 CHVBK 20180411082940.0 cr unu---uuuuu 180411e20131101xx s 000 0 eng 10.1007/s11947-012-0887-5 doi (NATIONALLICENCE)springer-10.1007/s11947-012-0887-5 Protective Effect of Melanoidins from Fructose-Glutamic Acid on Polyphenol Oxidase Inactivation by Ultraviolet-Visible Irradiation [Elektronische Daten] [Víctor Falguera, Aurea Folch, Alfonso Garvín, Albert Ibarz] Ultraviolet irradiation has been proved to be effective for inactivating polyphenol oxidase in some fruit derivatives. However, some compounds that may be found in these products, such as melanoidins, can protect the enzyme during the irradiation process. In this piece of work, the protective effect of melanoidins synthesized from fructose and glutamic acid on Agaricus bisporus polyphenol oxidase inactivation by ultraviolet-visible irradiation has been assessed. The polymers with molecular mass lower than 150kDa had a greater protective effect than those molecules higher than 150kDa. If the obtained melanoidins are not fractioned by their molecular mass, the protective effect that they exert is lower. It was found that the most effective radiation to inactivate this polyphenol oxidase is that between 260 and 310nm. Springer Science+Business Media, LLC, 2012 Melanoidin nationallicence Polyphenol oxidase nationallicence UV irradiation nationallicence Browning nationallicence Mushroom nationallicence Falguera Víctor Food Technology Department, University of Lleida, Av. Rovira Roure, 191, 25198, Lleida, Spain aut Folch Aurea Food Technology Department, University of Lleida, Av. Rovira Roure, 191, 25198, Lleida, Spain aut Garvín Alfonso Food Technology Department, University of Lleida, Av. Rovira Roure, 191, 25198, Lleida, Spain aut Ibarz Albert Food Technology Department, University of Lleida, Av. Rovira Roure, 191, 25198, Lleida, Spain aut Food and Bioprocess Technology Springer US; http://www.springer-ny.com 6/11(2013-11-01), 3290-3294 1935-5130 6:11<3290 2013 6 11947 https://doi.org/10.1007/s11947-012-0887-5 text/html Onlinezugriff via DOI 1 brief-communication jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s11947-012-0887-5 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Falguera Víctor Food Technology Department, University of Lleida, Av. Rovira Roure, 191, 25198, Lleida, Spain aut NATIONALLICENCE 700 1- Folch Aurea Food Technology Department, University of Lleida, Av. Rovira Roure, 191, 25198, Lleida, Spain aut NATIONALLICENCE 700 1- Garvín Alfonso Food Technology Department, University of Lleida, Av. Rovira Roure, 191, 25198, Lleida, Spain aut NATIONALLICENCE 700 1- Ibarz Albert Food Technology Department, University of Lleida, Av. Rovira Roure, 191, 25198, Lleida, Spain aut NATIONALLICENCE 773 0- Food and Bioprocess Technology Springer US; http://www.springer-ny.com 6/11(2013-11-01), 3290-3294 1935-5130 6:11<3290 2013 6 11947 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer