Effect of gamma irradiation on the physico-chemical and sensory properties of raw shelled peanuts (Arachis hypogaea L.) and pistachio nuts (Pistacia vera L.)
Φόρτωση...
Ημερομηνία
Συγγραφείς
Mexis, S. F.
Kontominas, M. G.
Τίτλος Εφημερίδας
Περιοδικό ISSN
Τίτλος τόμου
Εκδότης
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
BACKROUND: The present study evaluated the quality of raw peanuts and pistachio nuts as a function of irradiation dose in order to determine dose levels causing minimal undesirable changes to these products. Physico-chemical (colour, peroxide value, hexanal content, fatty acid composition, volatile compounds) and sensory (colour, texture, odour, taste) properties of raw peanuts and pistachio nuts were determined after irradiation at doses up to 7 kGy. RESULTS: Results showed an eight- and seven-fold increase in peroxide value and a twelve and five-fold increase in hexanal content after irradiation at a dose of 7 kGy for peanuts and pistachio nuts, respectively. An increase was also observed in saturated fatty acids (20.51-28.28% and 15.24-24.87%) with a parallel decrease in unsaturated fatty acids (79.49-71.72% and 84.76-75.13%) for peanuts and pistachio nuts, respectively. Likewise, volatile compounds such as aldehydes, alkanes, ketones and alcohols comprising secondary oxidation products of peanut and pistachio nut lipids increased after irradiation. Pistachio nut colour parameter a* and to a lesser extent parameters, V and b* decreased after irradiation leading to a slight but noticeable darkening in product colour while colour parameter L*, b* and a* of raw peanut remained unchanged by irradiation up to 7 kGy. CONCLUSION: Based on sensory evaluation, peanuts and pistachio nuts become unacceptable for consumption when irradiated at doses higher than 3 kGy. (C) 2009 Society of Chemical Industry
Περιγραφή
Λέξεις-κλειδιά
pistachio nuts, peanuts, irradiation, physico-chemical quality, sensory quality, high-oleic peanuts, volatile compounds, aflatoxin content, cashew nuts, stability, walnuts, kernels, almonds, food, degradation
Θεματική κατηγορία
Παραπομπή
Σύνδεσμος
<Go to ISI>://000264758400020
http://onlinelibrary.wiley.com/store/10.1002/jsfa.3526/asset/3526_ftp.pdf?v=1&t=h0dwb9ly&s=d7807231ecdfd4e25da115dfda11f3d87de74f60
http://onlinelibrary.wiley.com/store/10.1002/jsfa.3526/asset/3526_ftp.pdf?v=1&t=h0dwb9ly&s=d7807231ecdfd4e25da115dfda11f3d87de74f60
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