Abstract：
:The impact of different concentrations of Na(+), K(+), Ca(2+), Mg(2+), Fe(2+), and Zn(2+) on the degradation of adenosine triphosphate (ATP) and the influence of these ions on the activity of adenosine monophosphate deaminase (AMP-deaminase) and acid phosphatase (ACP) in common carp fillets (in vivo) during 4°C storage was examined. The content of ATP, inosine monophosphate (IMP), and hypoxanthine (Hx), and the activity of AMP-deaminase and ACP were determined. Results indicated that the effects of different concentrations of six kinds of metal ions on AMP-deaminase and ACP were not the same. Na(+), K(+), Fe(2+), and Zn(2+) enhanced AMP-deaminase activity, which led to the rapid degradation of ATP and to the generation of a large quantity of IMP within a short time. Ca(2+) and Mg(2+) delayed the change in AMP-deaminase and ACP activity in carp and caused a further delay in the degradation of ATP. Fe(2+) and Zn(2+) inhibited ACP activity, which reduced the decomposition of IMP and the formation of Hx.
journal_name
Food Chemjournal_title
Food chemistryauthors
Li D,Qin N,Zhang L,Lv J,Li Q,Luo Ydoi
10.1016/j.foodchem.2016.05.120subject
Has Abstractpub_date
2016-11-15 00:00:00pages
812-8eissn
0308-8146issn
1873-7072pii
S0308-8146(16)30809-3journal_volume
211pub_type
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