Production and Application of Active Packaging Film with Ethylene Adsorber to Increase the Shelf Life of Broccoli (Brassica oleracea L. var. Italica)
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Tarih
2014
Yazarlar
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
Wiley-Blackwell
Erişim Hakkı
info:eu-repo/semantics/closedAccess
Özet
Broccoli (Brassica oleracea L. var. Italica) florets were packaged in low-density polyethylene (LDPE) bags with or without ethylene adsorber under passive modified atmosphere and then stored at 4 degrees C for 20days. LDPE films with (8% Tazetut (R) masterbatch, M2) or without ethylene adsorber (M1) were tested. The effects of modified atmosphere packaging treatments on gas concentrations (O-2, CO2 and ethylene) in the headspace, the mass loss, colour, texture, pH, total soluble solids, chlorophyll content, total phenolic content and sensory quality of packaged broccoli were determined by comparing with unpackaged (control) florets. Results revealed that deterioration occurred quickly in control broccoli, manifested mainly by mass loss, chlorophyll degradation and stem hardening. Also, it was found unacceptable by sensory panel after 5days. Conversely, in those florets packaged under modified atmosphere packaging, especially for LDPE with ethylene adsorber (M2), all changes related with loss of quality were significantly reduced and delayed with time. Additionally, total soluble solids and total phenolic content remained almost unchanged during the whole period. Ethylene concentration was determined as 61.8ppm in M1 and 0.33ppm in M2, respectively, at the end of the storage. Thus, broccoli packaged with M2 films had prolonged storability up to 20days with high quality attributes, this period being only 5days in unpackaged control broccoli. Oxygen concentration decreased below 1% after 5days of storage in M1, and the shelf life of broccoli in these bags was limited to 5days because of risk for anaerobic fermentation. Copyright (c) 2013 John Wiley & Sons, Ltd.
Açıklama
Anahtar Kelimeler
broccoli, ethylene adsorber, active packaging, modified atmosphere packaging, shelf life
Kaynak
Packaging Technology and Science
WoS Q Değeri
Q2
Scopus Q Değeri
Q2
Cilt
27
Sayı
3
