However, this
study did not consider that the Luria broth preparation already
included 10 g/l NaCl along with 10 g/l tryptone and 5 g/l yeast
extract. Hence, the results obtained from the above said study
may be due to the combined effect of sodium glutamate and
sodium chloride or the role of Na2+ ions that benefited cell growth
in addition to the glutamate