Volume 35, Issue 5 (September 2007)

    Testing and Evaluation of Quality Changes of Treated Fresh-Cut Tropical Fruits Packaged in Thermoformed Plastic Containers

    (Received 15 December 2005; accepted 29 March 2007)

    Published Online: 2007

    CODEN: JTEOAD

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    Abstract

    Fresh-cut fruit accounted for nearly $300 at retail in the U.S. in 2004, with projected sales ranging between $1 and $2 billion by 2008. The choice of packaging materials and the atmospheric conditions both inside and outside the package contribute significantly to the shelf-life of these products. This study evaluated quality changes such as firmness, color, total soluble solids (TSS), titratable acidity (TA), sensory quality, and microbial safety of fresh-cut mangoes, pineapples, melons, and mixes of these fruits. Chemical treatments to reduce browning, firmness loss, and decay for these fruits were also investigated. The most effective treatments for fresh-cut mangoes, pineapples, and melons were 0.1 M ascorbic acid, 0.2 M ascorbic acid, and 0.2 M ascorbic acid plus 0.2 M calcium chloride, respectively. These fresh-cut tropical fruits were packaged in three semi-rigid containers made of polyethylene terephthalate (PET), oriented polystyrene (OPS), and oriented poly(lactide) (OPLA). Gas composition in the package headspace and the time to reach steady-state conditions were observed to vary among fresh-cut packaging systems and affected their quality and shelf-life. The effects of package permeability, with regards to O2 and CO2, on quality and shelf-life of the fresh-cut products are discussed in this paper. Extended shelf-life was observed in fresh-cut mangoes, pineapples, and mixes packaged in PET due to reduced O2 and elevated CO2 atmosphere. Modified atmosphere of 6% O2 and 14% CO2 achieved in PET extended the shelf-life of fresh-cut pineapples from 6 to 13 days. The results suggest that shelf-life of fresh-cut fruit could be extended using appropriate semi-rigid containers.


    Author Information:

    Singh, S. Paul
    Professor, School of Packaging, Michigan State University, East Lansing, MI

    Chonhenchob, V.
    Assistant ProfessorGraduate Assistant, Department of Packaging Technology, Kasetsart University, Bangkok,

    Chantarasomboon, Y.
    Assistant ProfessorGraduate Assistant, Department of Packaging Technology, Kasetsart University, Bangkok,

    Singh, J.
    Assistant Professor, Orfalea College of Business, California Polytechnic State University, San Luis Obispo, CA


    Stock #: JTE100166

    ISSN: 0090-3973

    DOI: 10.1520/JTE100166

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    Author
    Title Testing and Evaluation of Quality Changes of Treated Fresh-Cut Tropical Fruits Packaged in Thermoformed Plastic Containers
    Symposium , 0000-00-00
    Committee D10