March 2010

Pathogenic variability within biochemical groups of Pectobacterium carotovorum isolated in Algeria from seed potato tubers

One hundred Pectobacterium carotovorum, isolates, recovered from soft rot symptoms on potato tubers in Algeria  and previously characterised taxonomically, were assessed in a half-tuber test for differences in ability to cause tuber rotting on two cultivars (Désirée and Bintje) respectively considered to be moderately and very susceptible to soft rot. A first trial at 20°C, involving the...

Author(s): R. Yahiaoui-Zaidi, R. Ladjouzi and S. Benallaoua

March 2010

Studies in the graft copolymerization of acrylonitrile onto cassava starch by ceric ion induced initiation

  Graft copolymers of starch and acrylonitrile were synthesized in aqueous solution. Ceric ammonium ion was used to initiate the graft copolymerization. Ten grades of graft copolymers were synthesized- five by varying the initial concentration of the monomer and the other five by varying the initial concentration of the initiator. Evidence of graft copolymerization of the hydrolyzed products was obtained from...

Author(s): E. U. Ikhuoria, A. S. Folayan and F. E. Okieimen