International Journal of Fisheries and Aquatic Studies
2017, Vol. 5, Issue 3, Part F
Effect of two different storage temperatures (-12 â°C and -20 â°C) 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 muscle
s of
Labeo rohita kept under storage at two different temperatures viz. -12 â°C and -20 â°C 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 â°C storage samples and in -20 â°C 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 21
st day in samples stored at -20 â°C whereas at -12 â°C it crosses the limit on 7
th day of storage, beyond which the quality of fish deteriorates thus, making it unfit for human consumption. Thus, storage of fish fillets at -20 â°C extends their shelf life by 2 weeks as compared storage at -12 â°C.
Pages: 435-439 | 1167 Views 203 DownloadsDownload Full Article: Click Here
How to cite this article:
Roopma Gandotra, Sunakshi Sharma, Monika Sharma, Ritu Kumari. Effect of two different storage temperatures (-12 â°C and -20 â°C) on the proximate and microbial quality of Labeo rohita muscles. Int J Fish Aquat Stud 2017;5(3):435-439.