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The dual probiotic and antibiotic nature of Bdellovibrio bacteriovorus
( Mohammed Dwidar ),( Ajay Kalanjana Monnappa ),( Robert J. Mitchell ) 생화학분자생물학회 2012 BMB Reports Vol.45 No.2
Bdellovibrio bacteriovorus is a predatory bacterium which attacks and consumes other bacterial strains, including the well known pathogens E. coli O157:H7, Salmonella typhimurium and Helicobacter pylori. This remarkable activity has been the focus of research for nearly five decades, with exciting practical applications to medical, agriculture and farming practices recently being published. This article reviews many of the exciting steps research into this bacterium, and similar bacteria, has taken, focusing primarily on their use as both an antibiotic to remove harmful and pathogenic bacteria and as a probiotic to help curb and control the bacterial populations within the intestinal tract. Owing to the unique and dual nature of this bacterium, this review proposes the use of amphibiotic to describe these bacteria and their activities. [BMB reports 2012; 45(2): 71-78].
Biological activities of Lignin hydrolysate-related compounds
( Siseon Lee ),( Ajay Kalanjana Monnappa ),( Robert J. Mitchell ) 생화학분자생물학회 2012 BMB Reports Vol.45 No.5
Lignin hydrolysates contain many different chemical species, including ferulic acid, coumaric acid, vanillic acid, vanillin, syringaldehyde and furfural. From the perspective of biofuels, these compounds are problematic and can cause downstream loss of product if not removed prior to beginning the fermentative process. In contrast, a search for these compounds within the literature turns up many papers where the same compounds have beneficial properties pertaining to human health, including as antioxidants and in cancer prevention, or are involved in bacterial cell-to-cell signaling. Consequently, this article reviews the dual nature of these and other compounds found in lignin hydrolysates, highlighting both their detrimental and beneficial activities. [BMB Reports 2012; 45(5): 265-274]