Pyocyanin was extracted from cultures of Pseudomonas
aeruginosa, which was isolated from sea water by chloroform.
Results study the effect of pyocyanin against human pathogenic
bacteria, which were isolated from Al-Assad hospital laboratory in
La
ttakia, with disk diffusion method showed that pyocyanin has
antibacterial activity against Gram- positive bacteria.
In this research two methods for preserving the chloroform extract in the
roots of the Ferula hermonis were studied. The first one is summarized in
putting the roots in refrigerators, and the second one is the freez drying of the
roots.
The resul
ts of the experiment have shown that the percentage of waste of the
chloroform extract increased considerably in the first method with the increase
of the time of preservation, whereas in the case of freeze drying method, the
percentage of the waste of the chloroform extract was relatively low compared
to the first method. We think that this method (freeze drying) is practical for
the preservation of the chloroform extract, which expresses the active material
in the ferula hermonis roots, and can be considered as cost – effective as far as
the exploitation of these roots is concerned.
