Abstract
The effect of dip treatments of Indian mackerel (Rastriliger kanagurta) in 0.5 % & 1 % pomegranate peel extracts (Punica granatum) (PPE) and 3 % & 5 % green tea (Camelia sinensis) (GTE) extracts; on the ice storage characteristics was evaluated. Total phenolic content of PPE and GTE were found to be 212±20.55 and 159.3±7.72 mg g-1tannic equivalent. Fish treated with PPE and GTE were evaluated for bio-chemical, microbiological and sensory attributes during the period of storage in ice. Indicator organisms like Escherichia coli, and Staphylococcus aureus were not detected in any sample, whereas biochemical attributes increased significantly (p < 0.05) during the storage period. The fishes were acceptable up to 17th and 16th days in ice in case of PPE & GTE treatments, respectively. On the other hand the untreated fish was acceptable only up to 8 days. From this study it is concluded that; the natural extracts of PPE & GTE can be used to preserve the fatty fish and extend the shelf life during ice storage for a considerable period.SAARC J. Agri., 13(1): 109-122 (2015)
Highlights
IntroductionIt is mainly due to the catching method that has no control on its initial quality, which results in variation of intrinsic quality of raw material
Fish is one of the most perishable and difficult to handle of all foods
The values observed in the present study, if compared to that of Yerlikaya et al (2010), showed that phenolic content was slightly lower in pomegranate peel extract (PPE) and higher in green tea extract (GTE)
Summary
It is mainly due to the catching method that has no control on its initial quality, which results in variation of intrinsic quality of raw material. Cheapest, reasonably efficient and common method of preserving fresh fish. Iced fish has a limited shelf life. Fish can be stored in ice and maintained in good conditions for 315 days depending on species and various intrinsic factors. Fatty fishes like sardines have a limited shelf life of only 2-5 days in ice (Balachandran et al, 2001), whereas lean fishes will have a little more. This period is inadequate for long distance
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