Effect of non-conventional atmospheres and bio-based packaging on the quality and safety of Listeria monocytogenes-inoculated fresh-cut celery (Apium graveolens L.) during storage
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Date
2014
Authors
González Buesa, JaimePage, Natalie
Kaminski, Chelsea
Ryser, Elliot T.
Beaudry, Randolph
Almenar, Eva
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Abstract
The increased consumption of fresh-cut celery has led to the need to explore packaging alternatives for fresh-cut celery that can meet consumer, market, and industry needs. In this study, the effect of bio-based packaging and non-conventional atmospheres on the quality and safety of chlorine-sanitized celery sticks stored at 7 degrees C was investigated. Two materials differing in permeability [a bio-based polyester (polylactic acid (PLA)) and a petroleum-based polyolefin (polypropylene/low density polyethylene (PP/PE)] and four initial gas compositions [air (A-PLA or A-PP/PE), 95 kPa O-2+ 5 kPa N-2(O-2-PLA), 99 kPa N-2 + 1 kPa O-2 (N-2-PLA), and 6 kPa O-2+ 12 kPa CO2 + 82 kPa N-2(CO2-PLA)] were evaluated. Changes in headspace composition, weight loss, surface and cut end color, texture, ethanol content, appearance, and growth of Listeria monocytogenes on inoculated celery sticks were assessed during 21 d of storage. Active MAP (CO2-PLA) out-performed passive MAP (A-PLA) in maintaining celery stick quality but not safety. Conventional active MAP (CO2-PLA) out-performed non-conventional active MAPs (O-2-PLA and N2-PLA) in maintaining celery stick quality throughout storage, but O-2-PLA suppressed L. monocytogenes growth while CO2-PLA promoted growth during the first 10 d of storage. PLA and PP/PE materials affected celery stick quality but not Listeria growth. This study shows that the initial gas composition and packaging material both impact the quality and safety of celery sticks. Overall, the combination PLA and 95 kPa O-2 proved most beneficial in maximizing both the safety and quality of celery sticks during one week of storage at 7 degrees C. (C) 2014 Elsevier B.V. All rights reserved.
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Gonzalez-Buesa, J.; Page, Natalie, K.; Chelsea, R.; Elliot, T.; Beaudry, R.; Almena, E. Effect of non-conventional atmospheres and bio-based packaging on the quality and safety of Listeria monocytogenes-inoculated fresh-cut celery (Apium graveolens L.) during storage. Postharvest Biology And Technology, 2014, 93, 29-37
AGROVOC subjects
Envasado de alimentosAtmósfera
Calidad
Listeria monocytogenes
Apium graveolens
Other field subjects
Bio-based materialCarbon-Dioxide
DICED CELERY
Fresh-cut celery
GAMMA-IRRADIATION
Growth
Listeria monocytogenes
Non-conventional atmospheres
Oxygen
Packaging
PROCESSED CELERY
Quality
Refrigerated storage
Respiration Rate
SENSORY QUALITY
SHELF-LIFE
Sponsorship
This research was supported by the Project 2011-51110-31027
from the USDA NIFSI (United States Department of Agriculture’s
National Integrated Food Safety Initiative). The authors would also
like to thank the Michigan State University Food Safety Group for
the financial support of Natalie Page and the People Program (Marie
Curie Actions) of the European Union’s Seventh Framework Program (FP7/2007-2013) under REA grant agreement n◦ 332201 for
the financial support of Jaime González-Buesa.