Methods and kits for isolating microorganisms from culture
First Claim
1. A kit for the isolation, accumulation and/or purification of microorganisms from a test sample comprising, in a packaged combination:
- (a) a selective lysis buffer comprising Brij and CAPS for the selective lysis of non-microorganism known to be present or that may be present in a test sample;
(b) a filtration device comprising a hollow elongated body having a first end and a second end, wherein the first end is capped with a 0.45 μ
m filtration membrane to prevent passage of microorganisms through the filtration membrane but allows other components in the test sample to pass through the filtration membrane, wherein the filtration membrane extends from the first end in a direction opposite the second end;
(c) a wash buffer consisting of a Brij 97 detergent in a sodium phosphate buffer containing sodium chloride for washing the isolated, accumulated and/or purified microorganism sample;
(d) a vacuum system configured to connect to the second end of the filtration device;
(e) at least one micro-swab for harvesting or collecting microorganisms from the filtration membrane;
(f) at least one disposable transfer pipette adapted to transfer the lysed sample to the filtration membrane; and
(g) at least one MALDI-TOF target plate,wherein the swab is adapted for transferring the microorganisms from the filtration membrane to the MALDI-TOF target plate.
1 Assignment
0 Petitions
Accused Products
Abstract
The present invention is directed to methods and kits for separating, accumulating, characterizing and/or identifying microorganisms known to be present or that may be present in a test sample. The method of the invention comprises optional lysing non-microorganism cells and/or particulates that may be present in a test sample, followed by a subsequent filtration step for isolation and/or accumulation of microorganisms. The kit of the present invention may comprise at least one filter membrane or an integrated filtration and sample transfer device for isolation and/or accumulation of microorganisms.
-
Citations
6 Claims
-
1. A kit for the isolation, accumulation and/or purification of microorganisms from a test sample comprising, in a packaged combination:
-
(a) a selective lysis buffer comprising Brij and CAPS for the selective lysis of non-microorganism known to be present or that may be present in a test sample; (b) a filtration device comprising a hollow elongated body having a first end and a second end, wherein the first end is capped with a 0.45 μ
m filtration membrane to prevent passage of microorganisms through the filtration membrane but allows other components in the test sample to pass through the filtration membrane, wherein the filtration membrane extends from the first end in a direction opposite the second end;(c) a wash buffer consisting of a Brij 97 detergent in a sodium phosphate buffer containing sodium chloride for washing the isolated, accumulated and/or purified microorganism sample; (d) a vacuum system configured to connect to the second end of the filtration device; (e) at least one micro-swab for harvesting or collecting microorganisms from the filtration membrane; (f) at least one disposable transfer pipette adapted to transfer the lysed sample to the filtration membrane; and (g) at least one MALDI-TOF target plate, wherein the swab is adapted for transferring the microorganisms from the filtration membrane to the MALDI-TOF target plate. - View Dependent Claims (2, 3, 4, 5, 6)
-
Specification