Micro-organism threat detection
A microbiological detection and microbiological technology, applied in the field of microbiological results to infer threats, can solve problems such as high labor costs
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example 1
[0442] Example 1 - coliform bacteria
[0443] A preferred growth medium composition contains an indicator (e.g., resazurin), an inhibitor (e.g., bile salts) of non-specific microorganisms (i.e., those not tested), a protein source (e.g., casein-casein trypsin) digesta), an energy source (such as lactose), and at least one salt (such as NaCl). Examples of such compositions are described below; Table 1. In addition, percentage ranges for each component of the composition have been given within which coliform detection can still be performed according to the present invention. Another growth medium composition suitable for testing for the presence of coliform bacteria, including E. coli, is given in Table 2.
[0444] Table 1
[0445]
[0446]*Resazurin is a redox dye indicator – other similar indicators can be used – such as triphenyltetrazolium chloride (TCC) and rhombonic acid (Table 3)
[0447] *Resazurin is also known as (7-hydroxy-3H-phenoxazin-3-one 10-oxide) sodiu...
Embodiment 2
[0451] Example 2 - Staphylococcus
[0452] Examples of ranges of components in growth medium compositions that may be used to support growth and detect staphylococci are given in Table 3 below.
[0453] table 3
[0454]
[0455] It should be noted that the components of the compositions of Table 1, 2 or 3 may vary depending on the type of test to be performed. In the case of meat samples to be tested, the composition of Table 1 is preferably free of salt. Additionally, alternative redox dyes or other indicators may be utilized. Additionally, the protein, salt, and energy sources of the compositions described herein can be varied to support the growth of different alternative microorganisms.
[0456] Calibration plot showing growth (and death) patterns of coliform bacteria, including specific Escherichia coli species, grown in vials or other containers containing a standard growth medium (in this sense, a standard means a set of Containers with or without mesocoliforms...
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