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UV radiation and light as impact factors

  • Radiation in the spectral ranges of UV and VIS are environmental impact factors that can cause ageing of many materials or products. The reason for this is that especially organic materials, such as food or many pharmaceutical, are subject to photochemical degradation. Of course, suited transparent packaging material may give protection against such impact for radiation sensitive fillings. But for this, it is necessary to know about the spectral range of the fillings sensitivity as well as about the radiation impact of the radiation sources that are relevant during the life time of the product. The spectral irradiance for characterizing the emission of various radiation sources is easily measured by means of a spectroradiometer. The spectral sensitivity of a filling's property can be determined by spectrally dispersed irradiation, where the positions on a sample are related to the different wavelengths. Thus, the damaging effect of the different wavelengths can be directly evaluated.Radiation in the spectral ranges of UV and VIS are environmental impact factors that can cause ageing of many materials or products. The reason for this is that especially organic materials, such as food or many pharmaceutical, are subject to photochemical degradation. Of course, suited transparent packaging material may give protection against such impact for radiation sensitive fillings. But for this, it is necessary to know about the spectral range of the fillings sensitivity as well as about the radiation impact of the radiation sources that are relevant during the life time of the product. The spectral irradiance for characterizing the emission of various radiation sources is easily measured by means of a spectroradiometer. The spectral sensitivity of a filling's property can be determined by spectrally dispersed irradiation, where the positions on a sample are related to the different wavelengths. Thus, the damaging effect of the different wavelengths can be directly evaluated. A lateral measurement of the relevant property change shows the activation spectrum, which is the product of the spectral radiant exposure and the spectral sensitivity. By measuring the spectral irradiance for each sample position, the spectral sensitivity of the ageing property can be calculated. Comparing the fillings spectral sensitivity and the spectral irradiance of a potential radiation source during later transport and storage, conclusions can be drawn about necessary spectral absorption of a (partly) transparent packaging to give sufficient protection. The setup for such investigation will be shown and several illustrating samples from daily food experience will be given.zeige mehrzeige weniger

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Metadaten
Autor*innen:Anja Geburtig
Dokumenttyp:Beitrag zu einem Tagungsband
Veröffentlichungsform:Graue Literatur
Sprache:Englisch
Titel des übergeordneten Werkes (Englisch):Proceedings of the 20th IAPRI World Conference on Packaging
Jahr der Erstveröffentlichung:2016
Herausgeber (Institution):CETEA
Erste Seite:136
Letzte Seite:139
DDC-Klassifikation:Technik, Medizin, angewandte Wissenschaften / Ingenieurwissenschaften / Ingenieurwissenschaften und zugeordnete Tätigkeiten
Technik, Medizin, angewandte Wissenschaften / Ingenieurwissenschaften / Ingenieurbau
Freie Schlagwörter:Light; Spectral absorption; Spectral irradiance; Spectral sensitivity; UV radiation
Veranstaltung:20th IAPRI World Conference on Packaging
Veranstaltungsort:Campinas, Brazil
Beginndatum der Veranstaltung:12.06.2016
Enddatum der Veranstaltung:15.06.2016
ISBN:978-85-7029-136-3
Verfügbarkeit des Dokuments:Datei im Netzwerk der BAM verfügbar ("Closed Access")
Datum der Freischaltung:20.07.2016
Referierte Publikation:Nein
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