Iranian Journal of Fisheries Sciences
مجله علوم شیلاتی ایران
IJFS
Agriculture
http://jifro.ir
1
admin
1562-2916
10.18869/acadpub.ijfs
en
jalali
1401
8
1
gregorian
2022
11
1
21
6
online
1
fulltext
en
Research Article: Post-mortem quality changes in rainbow trout (Oncorhynchus mykiss) during live storage
Fish processing
Fish processing
پژوهشي
Orginal research papers
<span style="font-size:11pt"><span style="line-height:120%"><span style="text-autospace:none"><span style="font-family:Calibri,sans-serif"><span lang="TR" style="font-size:12.0pt"><span style="line-height:120%"><span new="" roman="" style="font-family:" times=""><span style="color:black">This study aimed to examine the quality changes of </span></span></span></span><span lang="TR" style="font-size:12.0pt"><span style="line-height:120%"><span new="" roman="" style="font-family:" times=""><span style="color:black"><span style="letter-spacing:.1pt">rainbow trout (<i>Oncorhynchus mykiss</i>) </span></span></span></span></span><span lang="TR" style="font-size:12.0pt"><span style="line-height:120%"><span new="" roman="" style="font-family:" times=""><span style="color:black">caught from the farm and live supply center</span></span></span></span><span lang="TR" style="font-size:12.0pt"><span style="line-height:120%"><span new="" roman="" style="font-family:" times=""><span style="color:black"><span style="letter-spacing:.1pt"> at different times. Rigor mortis, ATP-related components, K-</span></span></span></span></span><span lang="TR" style="font-size:12.0pt"><span style="line-height:120%"><span new="" roman="" style="font-family:" times=""><span style="color:black">value, and blood parameters of rainbow trout were monitored during storage in the live <span style="letter-spacing:.1pt">supply center of rainbow trout</span>. The <span style="letter-spacing:-.05pt">progress of rigor mortis was accompanied by an increase in storage hours. The </span></span></span></span></span><span lang="TR" style="font-size:12.0pt"><span style="line-height:120%"><span new="" roman="" style="font-family:" times=""><span style="color:black">initial K<i>-</i>value of fish in live storage was lower than 8%. K-value of the fish climbed to more than 50% at 24 h. After 28 h, K-value of the fish increased to 73% and gradually increased till the end. The K<sub>1</sub>-value, G-value, P-value, and Fr-value were increased during storage time.</span></span></span></span><span lang="TR" style="font-size:12.0pt"><span style="line-height:120%"><span new="" roman="" style="font-family:" times=""><span style="color:black"> The initial glycogen content in the individuals from the farm and live storage were 1.37 and 1.33 mg/g muscle. </span></span></span></span><span lang="TR" style="font-size:12.0pt"><span style="line-height:120%"><span new="" roman="" style="font-family:" times=""><span style="color:black">Significant differences in the plasma cortisol concentration were found in the fish after 24 and 72 h live storage compared to the fish caught from the farm. </span></span></span></span><span lang="TR" style="font-size:12.0pt"><span style="line-height:120%"><span new="" roman="" style="font-family:" times=""><span style="color:black">The L<sup>*</sup> (lightness) value of the fish fillet from the farm, 24 h, and 72 h live storage was determined as <span style="letter-spacing:-.05pt">62.33, 58.12, and 56.21, respectively. After transporting the fish into the live seafood supply center, the </span></span></span></span></span><span lang="TR" style="font-size:12.0pt"><span style="line-height:120%"><span new="" roman="" style="font-family:" times=""><span style="color:black">total viable count </span></span></span></span><span lang="TR" style="font-size:12.0pt"><span style="line-height:120%"><span new="" roman="" style="font-family:" times=""><span style="color:black"><span style="letter-spacing:-.05pt">was increased from </span></span></span></span></span><span lang="TR" style="font-size:12.0pt"><span style="line-height:120%"><span new="" roman="" style="font-family:" times=""><span style="color:black">2.55 to 4.29 and 5.63 log CFU/ g. </span></span></span></span><span lang="TR" style="font-size:12.0pt"><span style="line-height:120%"><span new="" roman="" style="font-family:" times=""><span style="color:black">These results suggested that the measurement of quality indexes has a great potential for predicting the freshness of rainbow trout during live storage in seafood supply centers.</span></span></span></span></span></span></span></span>
Rigor mortis, K-value, Freshness, Live supply center
1539
1557
http://jifro.ir/browse.php?a_code=A-10-449-15&slc_lang=en&sid=1
J.
Mehri
j.mehri3@gmail.com
100319475328460046633
100319475328460046633
No
Department of Fisheries Science, Science and Research Branch, Islamic Azad University, Tehran, Iran.
M.
Shamsaei Mehrgan
m.shamsaie@srbiau.ac.ir
100319475328460046634
100319475328460046634
Yes
Department of Fisheries Science, Science and Research Branch, Islamic Azad University, Tehran, Iran.
L.
Roomiani
l.roomiani@yahoo.com
100319475328460046635
100319475328460046635
No
Department of Fisheries, Ahvaz Branch, Islamic Azad University, Ahvaz, Iran
H.
Rajabi Eslami
rajabi.h@srbiau.ac.ir
100319475328460046636
100319475328460046636
No
Department of Fisheries Science, Science and Research Branch, Islamic Azad University, Tehran, Iran.