Effect of irradiation, active and modified atmosphere packaging, container oxygen barrier and storage conditions On the physicochemical and sensory properties of raw unpeeled almond kernels (Prunus dulcis)
Φόρτωση...
Ημερομηνία
Συγγραφείς
Mexis, S. F.
Riganakos, K. A.
Kontominas, M. G.
Τίτλος Εφημερίδας
Περιοδικό ISSN
Τίτλος τόμου
Εκδότης
Wiley-Blackwell
Περίληψη
Τύπος
Είδος δημοσίευσης σε συνέδριο
Είδος περιοδικού
peer reviewed
Είδος εκπαιδευτικού υλικού
Όνομα συνεδρίου
Όνομα περιοδικού
Journal of the Science of Food and Agriculture
Όνομα βιβλίου
Σειρά βιβλίου
Έκδοση βιβλίου
Συμπληρωματικός/δευτερεύων τίτλος
Περιγραφή
BACKGROUND: The present study investigated the effect of irradiation, active and modified atmosphere packaging, and storage conditions on quality retention of raw, whole, unpeeled almonds. Almond kernels were packaged in barrier and high-barrier pouches, under N(2) or with an O(2) absorber and stored either under fluorescent lighting or in the dark at 20 degrees C for 12 months. Quality parameters monitored were peroxide value, hexanal content, colour, fatty acid composition and volatile compounds. Of the sensory attributes colour, texture, odour and taste were evaluated. RESULTS: Peroxide value and hexanal increased with dose of irradiation and storage time. Irradiation resulted in a decrease of polyunsaturated and monounsaturated fatty acids during storage with a parallel increase of saturated fatty acids. Volatile compounds were not affected by irradiation but increased with storage time indicating enhanced lipid oxidation. Colour parameters of samples remained unaffected immediately after irradiation. For samples packaged under a N(2), atmosphere and b* values decreased during storage with a parallel increase of value a* resulting to gradual product darkening especially in irradiated samples. CONCLUSION: Non-irradiated almonds retained acceptable quality for ca. 12 months stored at 20 degrees C with the O(2) absorber irrespective of lighting conditions and packaging material oxygen barrier. The respective shelf life for samples irradiated at 1.0 kGy was 12 months packaged in PET-SiOx//LDPE irrespective of lighting conditions and 12 months for samples irradiated at 3 kGy packaged in PET-SiOx//LDPE stored in the dark. (C) 2010 Society of Chemical Industry
Περιγραφή
Λέξεις-κλειδιά
whole almonds, irradiation, active and modified atmosphere packaging, lighting conditions, shelf-life extension, gamma-irradiation, shelled walnuts, heart-disease, quality, identification, flavonoids, amygdalus, radiation, aflatoxin, flavor
Θεματική κατηγορία
Παραπομπή
Σύνδεσμος
<Go to ISI>://000288142300006
http://onlinelibrary.wiley.com/store/10.1002/jsfa.4225/asset/4225_ftp.pdf?v=1&t=h0e03q0w&s=afa4a87b8143e38273d9a09813efb8d8832ff82f
http://onlinelibrary.wiley.com/store/10.1002/jsfa.4225/asset/4225_ftp.pdf?v=1&t=h0e03q0w&s=afa4a87b8143e38273d9a09813efb8d8832ff82f
Γλώσσα
en
Εκδίδον τμήμα/τομέας
Όνομα επιβλέποντος
Εξεταστική επιτροπή
Γενική Περιγραφή / Σχόλια
Ίδρυμα και Σχολή/Τμήμα του υποβάλλοντος
Πανεπιστήμιο Ιωαννίνων. Σχολή Θετικών Επιστημών. Τμήμα Χημείας