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Effect of chilling on microbiological, biochemical and sensory attributes of whole aqua cultured Rainbow trout (Oncorhynchus mykiss Wallbaum, 1792)

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Title Effect of chilling on microbiological, biochemical and sensory attributes of whole aqua cultured Rainbow trout (Oncorhynchus mykiss Wallbaum, 1792)
Not Available
 
Creator George Ninan
Lalitha, K. V.
Zynudheen, A.A.
Jose Joseph
 
Subject Rainbow trout
Chilled storage
Spoilage bacteria
H2S producing bacteria
Volatile bases
Quality
Shelf life
 
Description Not Available
The effect of chilling on the quality deterioration of whole ungutted aquacultured rainbow trout
was studied by integrated evaluations of microbiological, biochemical,
and sensory attributes. The counts of aerobic mesophilic, psychrotrophic bacteria and Pseudomonas increased
exponentially. An initial lag phase was noticed for H2S producing bacteria, Aeromonas and Enterobacteriaceae.
Presence of pathogens such as Aeromonas hydrophila and A. sobria are of concern in the case of delay in icing
or temperature abuse during storage. The pH values increased from an initial value of 6.74 to 7.13. PV showed
fluctuations. Of the chemical indicators of spoilage, Thiobarbituric acid (TBA) values increased very slowly reaching
final value of 16.56 µg MA g per gram. Total Volatile Base Nitrogen values exceeded 27. 87 mg N 100 per gram on day
14 when the psychrotrophic counts exceeded 107
cfu g per gram indicating that this value may be useful as a measure of
degree of freshness for whole ungutted rainbow trout. Based on the TVB-N and microbiological limits, the shelf life
of trout at 0-2 degree celcius was 9-12 days
Not Available
 
Date 2021-08-03T10:40:10Z
2021-08-03T10:40:10Z
2011
 
Type Research Paper
 
Identifier George Ninan, Lalitha, K. V., Zynudheen, A. A. and Jose Joseph (2011) Effect of chilling on microbiological, biochemical and sensory attributes of whole aqua cultured Rainbow trout (Oncorhynchus mykiss Wallbaum, 1792), J. Aqua. Res. Dev. 10.4172/2155-9546.S5-001
2155-9546
http://krishi.icar.gov.in/jspui/handle/123456789/52706
 
Language English
 
Relation Not Available;
 
Publisher LONGDOM PUBLISHING SL