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Staff Publications

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    'Staff publications' is the digital repository of Wageningen University & Research

    'Staff publications' contains references to publications authored by Wageningen University staff from 1976 onward.

    Publications authored by the staff of the Research Institutes are available from 1995 onwards.

    Full text documents are added when available. The database is updated daily and currently holds about 240,000 items, of which 72,000 in open access.

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Record number 439742
Title Factors affecting the postharvest performance of fresh-cut lettuce
Author(s) Witkowska, I.M.
Source Wageningen University. Promotor(en): Ernst Woltering, co-promotor(en): Jeremy Harbinson. - [S.l. : S.n. - ISBN 9789461735744 - 120
Department(s) Horticultural Supply Chains
FBR Fresh Supply Chains
Publication type Dissertation, internally prepared
Publication year 2013
Keyword(s) slasoorten - verse producten - houdbaarheid (kwaliteit) - behandeling na de oogst - lettuces - fresh products - keeping quality - postharvest treatment
Categories Leafy Vegetables / Plant Products / Food Preservation, Packaging and Storage

The quality of fresh-cut fruits and vegetables is often offset by a rapid deterioration, due to severe physical stress, such as peeling, cutting, slicing, shredding, and trimming. Due to this wounding, the already short shelf-life of these harvested products is even more reduced in the market place. In addition, consumers have become more critical on the use of synthetic and chemical additives to preserve quality attributes of fresh-cut produce. Developing new, effective, non-invasive and non-chemical techniques for improving and maintaining quality in fresh-cut produce are the timely questions of the industry.

The work reported in this thesis adds to the increasing knowledge and understanding on how pre- and postharvest factors affect the storability of fresh-cut leafy vegetables. This work focused in particular on factors that up to date have not been systematically investigated such as (i) environment and genetic dependent antioxidant levels, (ii) plant age at harvest, (iii) light during post-processing storage and (iv) duration and conditions of storage prior to processing.

The factors under investigation are discussed in the light of their effects on the shelf-life of fresh-cut tissue as related to a number of physiological processes associated with tissue browning and senescence. We found that plant age at harvest and storage of the harvested crop prior to processing are important determinants of fresh-cut performance: the younger the plant and the shorter the storage period prior to processing, the longer the shelf life of the fresh-cut product. In addition, the application of low levels of light during storage and display of the fresh-cut product greatly prolonged the shelf-life. The physiological and biochemical background of these phenomena was investigated.

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