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DECONTAMINATION OF A MULTILAMINATED ASEPTIC FOOD PACKAGING MATERIAL AND STAINLESS STEEL BY OZONE
Author(s) -
KHADRE MOHAMMED A.,
YOUSEF AHMED E.
Publication year - 2001
Publication title -
journal of food safety
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.427
H-Index - 43
eISSN - 1745-4565
pISSN - 0149-6085
DOI - 10.1111/j.1745-4565.2001.tb00304.x
Subject(s) - pseudomonas fluorescens , ozone , aseptic processing , food packaging , human decontamination , hand sanitizer , food science , contamination , biofilm , waste management , materials science , pulp and paper industry , chemistry , bacteria , biology , ecology , genetics , organic chemistry , engineering
A multilaminated aseptic food packaging material and stainless steel were treated with ozone to inactivate natural contaminants, bacterial biofilms and dried films of Bacillus subtilis spores and Pseudomonas fluorescens. Sterility of the multilaminated packaging material was achieved when 1.0 x 2.0 cm‐pieces of the naturally‐contaminated material were treated with ozone in water (5.9 μg/mL) for 1 min. Dried films of spores (10 8 /6.3–cm 2 surface) were eliminated by 13 μg/mL of ozone in water for the multilaminated packaging material and 8 μg/mL in case of the stainless steel. Ozone inactivated Pseudomonas fluorescens in biofilms more effectively on stainless steel than on the multilaminated packaging material. Repeated exposure to ozone of Pseudomonas fluorescens in biofilms on the multilaminated packaging material eliminated up to ∼10 8 cfu/12.5 cm 2 . In conclusion, ozone is an effective sanitizer with potential applications in the decontamination of packaging materials and equipment food‐contact surfaces.