a b s t r a c t
In this study, the effect of different packaging systems on physicochemical, microbiological, aroma, color
and sensory characteristics of fresh raw pistachios during storage was evaluated. Fresh raw pistachios
were stored at vacuum (VP), modified atmosphere (MAP) and conventional packaging (CP) at 4 C for 30
days. Total mesophilic bacteria (TMAB) counts and free fatty acids (FFA) values were the most discriminating
parameters. At the end of the storage, FFA level and TMAB population of the samples stored in the
CP were the highest while VP and MAP enabled lower levels of FFA and TMAB, respectively. During the
storage palmitic acid content increased whereas linoleic acid level decreased in the all types of packaging.
No significant differences were found in other fatty acids during storage. Sensory analysis showed
variable results among the three packaging systems. In conclusion, the use of MAP was generally recommended
for the maintenance of quality of fresh raw pistachio for longer storage periods.