Zusammenfassung
Ultrahocherhitztes Orangengetränk in durchsichtigen, grünen bzw. gelbbraunen Glasflaschen und TetraPak-Verpackung wurde bei Raumtemperatur 32 Tage lang fluoreszierendem Licht (50–60 ft-C) ausgesetzt. Die chemische Analyse ergab einen signifikanten Einfluß der Verpackung and des Lichtes auf verschiedene Qualitätsparameter während der Lagerung (P<0,05). Die Ascorbinsäure-Verluste betrugen im durchsichtigen Glas 60,6%, im grünen Glas 54,6%, in TetraPak 51,0% und im gelbbraunen Glas 45,5% bezogen auf die Kontrollprobe mit 42,4% nach 32 Tagen. Der titrierbare Säuregrad, die Brix-Werte bzw. deren Verhältnis, die Lichtdurchlässigkeit und der Trub zeigten zunehmende Werte nit fortschreitender Lagerung. Danach gibt das braune Glas den besten Schutz, gefolgt von TetraPak, grünen Glas and schließlich durchsichtigen Glas. Die sensorische Wertung ging konform nit den Einfluß des Verpackungsmaterials.
Summary
HTST-pasteurized orange drink packed in clear, green and amber glass bottles and coextruded wax laminated paper (TetraPak), was exposed to fluorescent light of 50–60 ft-C for 32 days at ambient room temperature. Chemical analysis revealed significant effect of packages and light on different quality parameters during storage (P<0.05). Ascorbic acid losses amounted 60.6%, 54.6%, 51.0%, and 45.5% in clear glass, green glass, TetraPak, and amber glass respectively against 42.4% in the unexposed control during 32 days storage. Titratable acidity, Brix, Brix-acid ratio, light transmission and cloud-settling generally showed an increasing pattern with advanced storage. Brown glass gave the best protection followed by TetraPak, green glass and clear glass. Evaluation of the drink for sensory components indicated a congruent pattern of changes in the ratings which correlated with the packaging materials tested.
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Sattar, A., Durrani, M.J., Khan, R.N. et al. Effect of packaging materials and fluorescent light on HTST-pasteurized orange drink. Z Lebensm Unters Forch 188, 430–433 (1989). https://doi.org/10.1007/BF01122541
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DOI: https://doi.org/10.1007/BF01122541