دراسة تأثیر مصادر کاربونیة ونیتروجینیة مختلفة فی إنتاج السکر المتعدد الزانثان بواسطة البکتریا Xanthomonas campestris ATCC13951

AbstractThis research includes the study of effect of various carbon and nitrogen sources to achieve maximum production of Xanthan by bacterium Xanthomonas campestris ATCC 13951. the results showed that use of source as a carbon sucrose gave the highest production of xanthan(14.01g/l) polysaccharide after six days of incubation. Lowest production of xanthan (3.01 g/l) was obtained when lactose was used as a carbon source. maximum biomass (4.1g/l) was obtained when galactose was used as a carbon source and lowest biomass(1.41g/l) was obtained when xylose was used as a carbon source. The result also showed that maximum production of xanthan (13.98 g/l) was obtained when phenylalanine was used as a nitrogen source while lowest production of xanthan (7.39g/l) was obtained in case when thiourea was used as a nitrogen source. Maximum and minimum production of biomass (3.34 , 1.13g/l) were obtained when sodium nitrogen and thiourea used as a nitrogen source respectively.