25. Effect of Maintenance Temperature and Shelf Life of Tilapia (Oreochromis niloticus) Fillet Stored in Temperature -20 C on Total Count Bacteria

Nurdiani Muliana Sitakar, Nurliana N, Faisal Jamin, Mahdi Abrar, Zakiah Heryawati Manaf, Sugito S

Abstract


This study aims to determine the effect of storage time on the total number of bacteria in nile tilapia (Oreochromis niloticus) flesh stored at a temperature of 20 C and at different retention time. This study used split plot completely randomized design (CRD) with 2 treatment maintenance temperature of 29 C and 35 C. Experimental animals used were 30 nile tilapia fish grouped into five storage group namely 0 (P0), 7 (P1), 14 (P2), 21 (P3), and 28 (P4) days. The results showed that total number of bacteria found in fish flesh was higher than normal standard based on ISO 7388:2009 which was 5x105 cfu/g. The average of total numbers of bacteria in flesh of nile tilapia fish reared in 29 C on P0, PI, PII, PIII, and PIV were 6.55±0.19, 6.99±0.07, 6.96±0.08, 6.96±0.28, and 7.18±0.15, respectively. While the average of total numbers of bacteria in flesh of nile tilapia fish maintained in temperature of 35 C were 6.68 ± 0.10, 7.00±0.05, 7.19±0.12, 7.24±0.12, and 7.35±0.09, respectively. Total number of bacteria in nile tilapia flesh was affect significantly (P<0.05) by temperature and storage temperature maintenance. In conclusion, storage time and different tempera ure maintenance of nile tilapia can increase total amount of bacteria on fish flesh.

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DOI: https://doi.org/10.21157/j.med.vet..v10i2.4387

DOI (PDF): https://doi.org/10.21157/j.med.vet..v10i2.4387.g3772

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Creative Commons License
J. Med. Vet. is licensed under a Creative Commons Attribution 4.0 International License.