Effects of ice storage on post-mortem quality changes and shelf life of Hilsa, Tenualosa ilisha (Hamilton, 1822) in Bangladesh
JOURNAL OF STORED PRODUCTS RESEARCH(2024)
摘要
This study aimed to investigate the effects of ice (flake ice, size 2 mm) storage period (10 days) on biochemical (proximate composition, pH, K-value, trimethylamine nitrogen, thiobarbituric acid reactive substances, total volatile basic nitrogen, peroxide value, and acid value), microbiological (aerobic plate count), and sensory quality changes in Hilsa ( Tenualosa ilisha ). Biochemical composition analysis indicated a significant increase in moisture content from 63.83% to 67.07%. However, the protein and lipid contents decreased gradually from 19.85% to 16.72% and 13.85% to 10.03%, respectively, and the ash content increased from 2.19% to 4.78%. Total volatile basic -nitrogen (TVB-N) and thiobarbituric acid reactive substances (TBARS) values increased significantly, reaching 39.32 mg/100 g and 2.28 mg MDA/kg of lipid on the 10th day, respectively. K-value and trimethylamine nitrogen (TMA-N) levels reached 71.66% and 18.89 mg N/100 g on the 10th day, respectively, exceeding the acceptable limit. Peroxide value and acid value were increased, with the former reaching 23.25 meq/kg and 16.63 mg KOH/g of lipid on the 10th day, respectively. The microbial load steadily increased from 2.96 to 7.67 log CFU/g. Sensory evaluation indicated acceptable quality up to the 8 th day of ice storage condition. The findings of the study concluded that the shelf life of Hilsa ( T . ilisha ) was considered acceptable limit up to 8 days during ice storage.
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关键词
Biochemical,Microbiological,Sensory aspect,Tenualosa ilisha,Storage time
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