Control of melanosis and spoilage during chilled storage of pacific white shrimp (Penaeus vannamei) using sulphite alternatives
Control of melanosis and spoilage during chilled storage of pacific white shrimp (Penaeus vannamei) using sulphite alternatives
Date
2018
Authors
Viji, P.
Rao, B.M.
Jesmi, D.
Prasad, M.M.
Journal Title
Journal ISSN
Volume Title
Publisher
Abstract
Effect of various additives viz., sodium metabisuphite (SMS), combination of SMS, sodium citrate (SC) & ethylene
diamine tetra acetic acid (EDTA); and pomegranate peel extract (PE) in controlling melanosis and quality deterioration in
ice stored Penaeus vannamei was investigated. Shrimp was dip treated in: A) water without any additive (control), B) 1.25%
SMS (w/v), C) 0.5% SMS, 0.5% SC and 200 ppm EDTA, D) 0.5% SC and 200 ppm EDTA and E) 0.5% PE for 5 min. The
samples stored in ice were evaluated at 0, 12, 24, 36, 48 and 54 h for melanosis score, total volatile base nitrogen (TVB-N),
pH and aerobic plate count (APC). Treatments E and D significantly delayed melanosis development compared to control
(A) followed by B and C combination. At the end of 54 h, melanosis score reached 8; 5.5; 5; 4 and 5, respectively for A, B,
C, D and E samples. The APC of E and D samples were relatively lower compared to other treatment and control samples.
The APC at the end of 54 h of chilled storage was 2.2 x105; 1.23x105; 4.5x105; 2.3x104 and 2.2x104 cfu g-1, respectively for
A, B, C, D and E samples. TVB-N and pH of PE treated samples remained lower compared to other samples. The results
indicated that pomegranate peel extract and chemicals like sodium citrate and EDTA can be used in combination with
sodium metabisulphite to control development of melanosis in farmed shrimps during chilled storage.
Description
Keywords
Citation
Indian J. Fish 65(3):135-139