Objective(s):[p1]  This study highlights xylanase overproduction from Bacillus mojavensis via UV mutagenesis and optimization of the production process. Materials and Methods:Bacillus mojavenis PTCC 1723 underwent UV radiation. Mutants’ primary screening was based on the enhanced Hollow Zone Diameter/ Colony Diameter Ration (H/C ratios) of the colonies in comparison with the wild strain on Xyla...

conclusions association with sex, genotype and clinical symptoms revealed that the pre-s1 orf deletion occurred in 40% , 40%,and 20% of genotypes b,c, and d respectively, and 80% of the female population, of which all but one were diagnosed with chronic hepatitis b. additionally, several mutations were found in the bcp region with the following incidence rate; c1653 t (8.6%), a1752 g (10.8%),17...

Introduction. Kumquat is a good source of vitamin C, as well phenolic and flavonoid substances. In this study, we used various solvents to obtain extracts from fresh lyophilized dried fruits leaves kumquat plant, six mutants, compare their total contents antioxidant activities.
 Study objects methods. The content was determined by the Folin-Ciocalteu method colorimetric method, respectivel...