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Hoffmann, R. A wiki for the life sciences where authorship matters. Nature Genetics (2008)
 
 
 
 
 

The effects of glucosinolates and their hydrolysis products on microbial growth.

Rapemeal, which contains potentially toxic compounds such as glucosinolates, was assessed as a substrate for the growth of micro-organisms. The effects of glucosinolates and their degradation products were tested on a range of industrially important microbial species. Sinigrin (2-propenyl glucosinolate) was found to be relatively innocuous to all of the organisms tested but its hydrolysis to yield isothiocyanates, thiocyanates and nitriles resulted in inhibition of growth. The initial inhibitory sinigrin concentration before its hydrolysis was found to be species-dependent with Bacillus subtilis being the most resistant (80 micrograms ml-1) and Saccharomyces cerevisiae (40 micrograms ml-1) the most sensitive. Three Gram-positive organisms tested were found to be more resistant to hydrolysis products than other micro-organisms. Similar results were observed with phenylisothiocyanate for which inhibition was found to be inhibitor and cell concentration-dependent. Addition of thioglucoside glucohydrolase during active growth of Escherichia coli in a sinigrin-containing liquid medium reduced the number of viable cells. Similar effects were also observed in rapemeal media in which growth inhibition was dependent on the glucosinolate content of the rapemeal.[1]

References

  1. The effects of glucosinolates and their hydrolysis products on microbial growth. Brabban, A.D., Edwards, C. J. Appl. Bacteriol. (1995) [Pubmed]
 
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