Author/Authors :
Kabir، Syed N. نويسنده , , Haque، Md. Alimul نويسنده P. G. Department of Physics, V. K. S. University, Ara – 802301, India , , Nurujjaman، Md. نويسنده Department of Biochemistry and Molecular Biology, Faculty of Science, , , Hasan، Imtiaj نويسنده Department of Biochemistry and Molecular Biology, Faculty of Science , , Zubair، Md. Abu نويسنده Department of Food Technology and Nutritional Science , , Chowdhury، Md. Robiul Hassan نويسنده 1Department of Biochemistry and Molecular Biology, Faculty of Science , , Uddin، Md. Belal نويسنده Department of Biochemistry and Molecular Biology, Faculty of Science , , Roy، Narayan نويسنده Department of Biochemistry and Molecular Biology, Faculty of Science , , Islam، Md. Kamrul نويسنده Depatment of Physiology, Faculty of Veterinary Science , , Absar، Nurul نويسنده Department of Biochemistry and Molecular Biology, Faculty of Science ,
Abstract :
Chitinases (designated as SPCs) were isolated from „Shilbilati? potatoes, a potato prototype cultivated in Bangladesh by affinity chromatography on a chitin column. SPCs agglutinated rat erythrocytes at the minimum concentration of 7 ?g/mL and showed toxicity against brine shrimp nauplii with the LC50 value of 20 ?g/mL. The chitinases also agglutinated seven bacterial strains among the twelve as studied. Pseudomonas aeruginosa, Bacillus subtilis and Salmonella typhi were the most sensitive towards the SPCs and were agglutinated at 1.2, 2.5 and 5.0 ?g/mL protein concentrations respectively. Antibacterial tests demonstrated that SPCs showed inhibitory activity against the pathogenic bacteria Staphylococcus aureus, Bacillus subtilis and Salmonella typhi. Antifungal activity was investigated by the disc diffusion method. Five fungal species (Candida albicans, Aspergillus niger, Fusarium vasinfectum, Aspergillus fumigatus and Aspergillus flavus) and two fungal genus (Penicillium and Mucor sp.) were examined in the assay. SPCs showed antifungal activity against Candida albicans, Fusarium vasinfectum and Penicillium sp.
