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GROWTH RESPONSE OF VIBRIO PARAHAEMOLYTICUS AND LISTERIA MONOCYTOGENES IN SALTED FISH FILLETS AS AFFECTED BY ZATARIA MULTIFLORA BOISS. ESSENTIAL OIL, NISIN, AND THEIR COMBINATION
Author(s) -
EKHTIARZADEH HASSAN,
AKHONDZADEH BASTI AFSHIN,
MISAGHI ALI,
SARI ABBASALI,
KHANJARI ALI,
ROKNI NOURDAHR,
ABBASZADEH SEPIDEH,
PARTOVI RAZIEH
Publication year - 2012
Publication title -
journal of food safety
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.427
H-Index - 43
eISSN - 1745-4565
pISSN - 0149-6085
DOI - 10.1111/j.1745-4565.2012.00376.x
Subject(s) - nisin , vibrio parahaemolyticus , listeria monocytogenes , food science , essential oil , biopreservation , inoculation , chemistry , minimum inhibitory concentration , microbiology and biotechnology , biology , bacteriocin , antimicrobial , bacteria , horticulture , genetics
The growth of Vibrio parahaemolyticus (at inoculation levels, 10 3 and 10 5 cfu/g) and Listeria monocytogenes (at inoculation level, 10 3 cfu/g) were investigated in salted fish fillets (brine salted at 4% NaCl) as affected by different concentrations of Zataria multiflora Boiss. essential oil (EO), nisin (N) and their combinations at 8C (and 4C only for L. monocytogenes ) during 21 days. The growth of V. parahaemolyticus was inhibited at 8C (in control group) and reached <2 log 10 cfu/g at the first day of study for inoculation level of 10 3 cfu/g. At inoculation level of 10 5 cfu/g, this inhibitory effect was significantly ( P < 0.05) affected by adding EO. The significant inhibitory effect of N alone and synergistic inhibitory effect of EO with N were also observed during the study. For L. monocytogenes , the obvious significant inhibitory effect of EO and its combination with N was observed at 4C. Considering the organoleptic effect of the EO used in this study, the best inhibitory effects of EO in combination with N for V. parahaemolyticus and L. monocytogenes were obtained at combinations of EO = 0.405% and n = 0.75 µg/mL, and EO = 0.405% and n = 0.25 µg/mL, respectively. PRACTICAL APPLICATION The synergistic inhibitory effect of Zataria multiflora Boiss. essential oil and nisin on V. parahaemolyticus and L. monocytogenes , which was obtained in this study can improve the scope of essential oil function in food industry.