The maximum values of soluble, insoluble and total protein contents of
Chlorella vulgaris cultures amounted to 173%, 142% and 148% of that of the control
cultures, when algal cultures subjected to 3 ppm MgCl2, respectively. However, the
minimum values of soluble, insoluble and total protein contents amounted to 69%, 74%
and 73% of that of the control cultures when algal cultures subjected to 6 ppm MgCl2,
respectively (Table 2-a).