ABSTRACT
Aims@#This study was aimed to characterize a dehalogenase derived from Bacillus cereus SN1 isolated from cow dung. @*Methodology and results@#Cell-free extract of Bacillus cereus SN1 was purified using ion exchange and gel filtration chromatography. Fraction B2 of gel filtration gave the highest enzyme specific activity (0.155 μmol CI¯/min/mg). The results of SDS-PAGE showed the enzyme was 25 kDa in size. The enzyme reached its optimum activity at 30 °C at pH 6, and was inhibited by Mercury(II) sulfate (HgSO4). The Km and kcat values were 0.2 mM and 1.22/sec, respectively. The partial dehalogenase gene sequence was amplified using Group I dehalogenase primers. The amplified gene sequence was designated as DehSN1. @*Conclusion, significance and impact of study@#Dehalogenase from Bacillus cereus strain SN1 revealed new characteristics of dehalogenase protein. The findings indicated that the DehSN1 dehalogenase is a promising candidate for further studies as a bioremediation agent for agricultural applications.
ABSTRACT
OBJECTIVE: To validate the efficacy and safety of the enteric-coated capsule of Four Viable Organisms(bafidobacterium,lactobacillus,enterococcus and bacilluscereus) in the treatment of chronic diarrhea.METHODS: In this multi-center,randomized,blind control study,124 patients(trial group) with chronic diarrhea were randomly assigned to receive the enteric-coated capsule containing bacillus bifidus,lactobacillus,enterococcus and bacilluscereus,while the control group(n=80) to receive the capsule of bacillus bifidus,bacillus acidophilus and enterococcus faecalis for 14 days.The days spent for the relief of diarrhea relief and the concomitant symptoms of diarrhea such as pain,bloating,and tenesmus were observed.RESULTS: At 3 days,the remission rate in trial group(41.13%) was higher than in control group(11.25%)(P