A method for detection of beta-D-glucuronidase activity in a sample that comprises the steps of
(i) providing a glucuronic acid ester compound of the general formula
wherein
R1 is a C1-4 alkyl group,
OR2 is a dye moiety, which is liberated after cleavage of the glycosidic bond;
(ii) contacting said glucuronic acid ester compound with a material of said sample exhibiting hydrolytic activity towards glucuronic acid esters, thereby removing R1 and thus forming a sample containing an indicator compound suitable for the detection and/or measurement of beta-D-glucuronidase activity, and
(iii) using said indicator to perform an assay requiring detection or measurement of beta-D-glucuronidase activity.
Use of at least one substrate of carboxylesterase and/or triacylglycerol lipase for detecting bacteria of the group Bacillus cereus
申请人:bioMérieux
公开号:US10351896B2
公开(公告)日:2019-07-16
Use of at least one chromogenic and/or fluorogenic carboxylesterase and/or triacylglycerol-lipase substrate, to detect bacteria of the Bacillus cereus group in a sample capable of containing them.
Selective enrichment medium for carbapenem-resistant bacteria
申请人:Rambach Alain
公开号:US10590460B2
公开(公告)日:2020-03-17
The present invention relates to a method for direct detection and differentiation of carbapenem-resistant bacteria in a sample comprising (i) inoculation with said sample of a culture medium comprising at least meropenem and/or ertapenem and at least one chromogenic agent, (ii) incubation of said culture medium under conditions allowing the growth of carbapenem-resistant bacteria, and (iii) detection of colonies formed on said culture medium corresponding to a carbapenem-resistant bacteria, as well as a culture medium suitable for use in such a method.
Use of at least one chromogenic and/or fluorogenic phosphatase substrate for the detection and/or enumeration of enterobacteria in a sample
申请人:BIOMERIEUX
公开号:US10808275B2
公开(公告)日:2020-10-20
Use of at least one chromogenic and/or fluorogenic phosphatase substrate for the detection and/or enumeration of enterobacteria in a sample likely to contain them, such as a food sample.
Culture medium for detecting bacteria of listeria genus
申请人:——
公开号:US20040072279A1
公开(公告)日:2004-04-15
The invention concerns a culture medium for isolating bacteria of Listeria genus, in particular
L. monocytogenes
, characterised in that it comprises in a Listeria culture medium, at least a specific agent for identifying &ggr;-mannosidase for use in solid medium.