title: Impact of different visible light spectra on oxygen absorption and surface discoloration of bologna sausage.
abstract: The objective of this study was to evaluate the influence of several visible light spectra in various intensities on the oxygen absorption and surface color of sliced bologna. Sausage samples were stored in a gastight model packaging system and illuminated at 5°C with six single-colored LEDs covering the main part of the visible light spectrum. The initial oxygen level was set at 0.5% in order to simulate common residual oxygen amounts in conventional packaging. The oxygen absorption and the discoloration measured as changes in CIE a*-value were dependent from the applied light intensity. The color stability of bologna was differently affected by light of various wavelengths. The results show that the use of suitable LEDs with specific spectra for display illumination can help to reduce the light induced deterioration of cured sausages in retail markets.
authors.affiliation: Fraunhofer-Institute for Process Engineering and Packaging, Retention of Food Quality, Giggenhauser Str. 35, 85354, Freising, Germany. Electronic address: nadine.boehner@ivv.fraunhofer.de.
authors.forename: Nadine
authors.initials: N
authors.lastname: Böhner
authors.affiliation: Fraunhofer-Institute for Process Engineering and Packaging, Retention of Food Quality, Giggenhauser Str. 35, 85354, Freising, Germany.
authors.forename: Klaus
authors.initials: K
authors.lastname: Rieblinger
mesh_terms: D000818:Animals; D003080:Cold Temperature; D003116:Color; D005511:Food Handling; D018857:Food Packaging; D005519:Food Preservation; D061353:Food Storage; D006863:Hydrogen-Ion Concentration; D008027:Light; D008461:Meat Products / Q000032:analysis / Q000528:radiation effects*; D010084:Oxidation-Reduction; D010100:Oxygen / Q000032:analysis*; D013552:Swine; D013649:Taste
chemical_list: D010100:Oxygen
keywords: Color stability; Cured boiled sausage; Discoloration; LED; Light; Residual oxygen; Retail display cabinet