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Journal of Amino Acids
Table of Contents
Special Issues
Journal of Amino Acids
/
2011
/
Article
/
Tab 1
/
Research Article
Digestive Alkaline Proteases from
Zosterisessor ophiocephalus, Raja clavata
, and
Scorpaena scrofa
: Characteristics and Application in Chitin Extraction
Table 1
Effects of various metal ions (5 mM) on protease activity.
Metal ions
Relative activity (%)
Goby
Scorpionfish
Control
100
100
100
Na
+
100
91
110
K
+
100
91
80
Mg
2+
117
122
100
Mn
2+
47.5
83
37.5
Zn
2+
20
105
23
Cu
2+
17.5
67
47.5
Hg
2+
36
62
29.5
Fe
2+
0
31
0
Ca
2+
110
129
111
Ba
2+
110
97
100