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(ICV-Poland) Impact Value: 76.37, Impact Factor: RJIF 5.69
E-ISSN: 2347-5129, P-ISSN: 2394-0506

International Journal of Fisheries and Aquatic Studies

2017, Vol. 5, Issue 3, Part F

Effect of two different storage temperatures (-12 ⁰C and -20 ⁰C) on the proximate and microbial quality of Labeo rohita muscles


Author(s): Roopma Gandotra, Sunakshi Sharma, Monika Sharma and Ritu Kumari

Abstract: The present study was aimed to investigate the proximate and microbial profile of muscles of Labeo rohita kept under storage at two different temperatures viz. -12 ⁰C and -20 ⁰C for a period of 4 weeks. The analysis was carried out at an interval of 7 days. Initially, the proximate composition of fresh samples (at 0 day) revealed 16.00±0.1% protein, 3.55±0.01% lipid, 82. 28±0.04% moisture and 1.45±0.04% ash. However, after 4 weeks of frozen storage, there was a significant percentile decrease (p≤0.05) i.e. 36%, 60.2%, 8.53%, 27.5% in protein, lipid, moisture and ash content, respectively in -12 ⁰C storage samples and in -20 ⁰C storage sample the percentile decrease was comparatively less, i.e. 17.87% in protein, 24.50% in lipid, 5.28% in moisture and 20.68% in ash. The microbial load of fresh samples was found to be 2.10±0.2 log cfu/g (TPC i.e. Total Plate Count), 1.20±0.15 log cfu/g (CC i.e. Coliform Count), 2.12±0.02 log cfu/g (PC i.e. Psychrophilic Count). These values increased significantly (p≤0.05) during 4 weeks of frozen storage. The study further revealed that, TPC was within the acceptable limit (6 log cfu/g) on 21st day in samples stored at -20 ⁰C whereas at -12 ⁰C it crosses the limit on 7th day of storage, beyond which the quality of fish deteriorates thus, making it unfit for human consumption. Thus, storage of fish fillets at -20 ⁰C extends their shelf life by 2 weeks as compared storage at -12 ⁰C.

Pages: 435-439  |  459 Views  16 Downloads

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How to cite this article:
Roopma Gandotra, Sunakshi Sharma, Monika Sharma and Ritu Kumari. Effect of two different storage temperatures (-12 ⁰C and -20 ⁰C) on the proximate and microbial quality of Labeo rohita muscles. International Journal of Fisheries and Aquatic Studies. 2017; 5(3): 435-439.
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