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Statements

Subject Item
n2:RIV%2F62157124%3A16270%2F12%3A43871185%21RIV13-MSM-16270___
rdf:type
skos:Concept n19:Vysledek
dcterms:description
The effect of two types of modified atmosphere (MA1: 69% N2, 25% CO2, 5% O2, 1% CO? MA2: 70% N2, 30% CO2) on changes in physical and chemical parameters (pH, aw-water activity, TVBN - total volatile basic nitrogen, TMA-trimethylamine, FFA-free fatty acids, PV-peroxide value, TBA-thiobarbituric acid) in muscle tissues of the silver carp was monitored in the study. The samples were stored at temperatures +2 +- 2°C for 18 days. Changes in gas volumes (CO2 and O2) in v MAs were also monitored. CO2 levels increased in MA1 but decreased in MA2. At the end of 18 days of storage, a significantly (P{0.01) lower water activity (aw) levels were found in samples packaged under MA1, in contrast to samples packaged under MA2 where water activity values showed considerable fluctuation. Variations in pH values in the two types of MA showed similar trends. Sample pH gradually decreased until day 9 of storage. On day 11, muscle tissue pH increased markedly and then began to decrease again. The overall decrease in pH values was more profound in samples packaged under MA1. TVBN and TMA levels in samples packaged under the two types of MAs remained almost identical until day 9 of the experiment. Later, however, significantly (P{0.01) higher levels of both parameters were found in muscle tissues packaged under MA1. FFA concentrations in silver carp samples in MA1 were significantly lower (P{0.01) throughout the experiment. The PV increased significantly in both muscle samples tested. Greater fluctuations in this parameter's values throughout the experiment were observed in samples packaged under MA2. Faster rates of oxidation (P{0.01) were found in samples packaged under MA1 starting on day 9. The more appropriate combination of gases for silver carp storage seems to be the mixture of 70% N2 and 30% CO2 (MA2), which allows for muscle storage of up to 9 days. We recommend TVBN as a suitable indicator of freshness, and TBA assay as a suitable indicator of the extent of oxidative processes. The effect of two types of modified atmosphere (MA1: 69% N2, 25% CO2, 5% O2, 1% CO? MA2: 70% N2, 30% CO2) on changes in physical and chemical parameters (pH, aw-water activity, TVBN - total volatile basic nitrogen, TMA-trimethylamine, FFA-free fatty acids, PV-peroxide value, TBA-thiobarbituric acid) in muscle tissues of the silver carp was monitored in the study. The samples were stored at temperatures +2 +- 2°C for 18 days. Changes in gas volumes (CO2 and O2) in v MAs were also monitored. CO2 levels increased in MA1 but decreased in MA2. At the end of 18 days of storage, a significantly (P{0.01) lower water activity (aw) levels were found in samples packaged under MA1, in contrast to samples packaged under MA2 where water activity values showed considerable fluctuation. Variations in pH values in the two types of MA showed similar trends. Sample pH gradually decreased until day 9 of storage. On day 11, muscle tissue pH increased markedly and then began to decrease again. The overall decrease in pH values was more profound in samples packaged under MA1. TVBN and TMA levels in samples packaged under the two types of MAs remained almost identical until day 9 of the experiment. Later, however, significantly (P{0.01) higher levels of both parameters were found in muscle tissues packaged under MA1. FFA concentrations in silver carp samples in MA1 were significantly lower (P{0.01) throughout the experiment. The PV increased significantly in both muscle samples tested. Greater fluctuations in this parameter's values throughout the experiment were observed in samples packaged under MA2. Faster rates of oxidation (P{0.01) were found in samples packaged under MA1 starting on day 9. The more appropriate combination of gases for silver carp storage seems to be the mixture of 70% N2 and 30% CO2 (MA2), which allows for muscle storage of up to 9 days. We recommend TVBN as a suitable indicator of freshness, and TBA assay as a suitable indicator of the extent of oxidative processes.
dcterms:title
Effect of modified atmosphere packaging on the course of physical and chemical changes in chilled muscle tissue of silver carp (Hypophthalmichthys molitrix, V.) Effect of modified atmosphere packaging on the course of physical and chemical changes in chilled muscle tissue of silver carp (Hypophthalmichthys molitrix, V.)
skos:prefLabel
Effect of modified atmosphere packaging on the course of physical and chemical changes in chilled muscle tissue of silver carp (Hypophthalmichthys molitrix, V.) Effect of modified atmosphere packaging on the course of physical and chemical changes in chilled muscle tissue of silver carp (Hypophthalmichthys molitrix, V.)
skos:notation
RIV/62157124:16270/12:43871185!RIV13-MSM-16270___
n19:predkladatel
n20:orjk%3A16270
n3:aktivita
n7:Z
n3:aktivity
Z(MSM6215712402)
n3:cisloPeriodika
3
n3:dodaniDat
n5:2013
n3:domaciTvurceVysledku
n9:9892931 n9:5973422
n3:druhVysledku
n12:J
n3:duvernostUdaju
n11:S
n3:entitaPredkladatele
n16:predkladatel
n3:idSjednocenehoVysledku
133155
n3:idVysledku
RIV/62157124:16270/12:43871185
n3:jazykVysledku
n18:eng
n3:klicovaSlova
chemical changes; freshwater fish; meat oxidation; freshness
n3:klicoveSlovo
n15:freshness n15:meat%20oxidation n15:freshwater%20fish n15:chemical%20changes
n3:kodStatuVydavatele
PL - Polská republika
n3:kontrolniKodProRIV
[9426A1A7F1D5]
n3:nazevZdroje
Polish Journal of Veterinary Sciences
n3:obor
n4:FM
n3:pocetDomacichTvurcuVysledku
2
n3:pocetTvurcuVysledku
2
n3:rokUplatneniVysledku
n5:2012
n3:svazekPeriodika
15
n3:tvurceVysledku
Buchtová, Hana Ježek, František
n3:wos
000309151500005
n3:zamer
n8:MSM6215712402
s:issn
1505-1773
s:numberOfPages
7
n14:doi
10.2478/v10181-012-0068-5
n17:organizacniJednotka
16270