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OJVRTM
Online
Journal of Veterinary Research ©
15 (4): 354-365, 2011. Redacted 2017.
Nisin as preservative for rainbow trout
(Onchorynchus mykis)
Soltanian S1 (DVM, PhD), Behnam S 2* (MSc), Rezai M
2 (PhD), Safari R3
(MSc), and Anvari M2 (MSc)
1Aquatic Animal Health & Diseases Department, School of Veterinary Medicine,
Shiraz University, Shiraz, 2Department of Fisheries,
Faculty of Fisheries and Natural
Resources, Tarbiat Modares
University, Noor,
3Caspian Sea Ecology Research
Institute, Sari, 4847153948, Iran
ABSTRACT
Soltanian S, Behnam S, Rezai
M, Safari R, Anvari M., Nisin as
preservative for rainbow trout (Onchorynchus mykis), Onl J Vet Res., 15 (4): 354-365,
2011. Chemical
and microbiological changes in vacuum-packaged slices of rainbow trout (Onchorynchus mykis)
treated or not treated (controls) with nisin (0.2 %
w/w) samples were evaluated for 16 days at 4 °C. The peroxide value (PV), thiobarbituric
acid value (TBA)
and total volatile basic nitrogen (TVB-N) remained within standard acceptable
levels of 6.21 meqkg-1, 0.71
mgkg-1 and 24.81mg 100g-1, respectively, whereas the same
values were exceeded in untreated control samples. Nisin
significantly (p<0.05) lowered the number of psychrotrophic,
mesophilic and lactic acid bacteria (LAB) compared with controls (5.35
log, 1.57 log, and 6.3 log vs. 6.82 log, 5.35 log and 7.84
log, respectively. The results suggest that nisin
could be used to extend the shelf-life of filleted rainbow trout.
Key words: rainbow trout; nisin;
vacuum packaging; shelf-life.
Raw Data file provided.
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