WO1996026290A1 - Milieu d'examen microbiologique et procede d'examen microbiologique a l'aide de ce milieu - Google Patents
Milieu d'examen microbiologique et procede d'examen microbiologique a l'aide de ce milieu Download PDFInfo
- Publication number
- WO1996026290A1 WO1996026290A1 PCT/JP1996/000363 JP9600363W WO9626290A1 WO 1996026290 A1 WO1996026290 A1 WO 1996026290A1 JP 9600363 W JP9600363 W JP 9600363W WO 9626290 A1 WO9626290 A1 WO 9626290A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- medium
- atp
- test
- present
- luciferase
- Prior art date
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12Q—MEASURING OR TESTING PROCESSES INVOLVING ENZYMES, NUCLEIC ACIDS OR MICROORGANISMS; COMPOSITIONS OR TEST PAPERS THEREFOR; PROCESSES OF PREPARING SUCH COMPOSITIONS; CONDITION-RESPONSIVE CONTROL IN MICROBIOLOGICAL OR ENZYMOLOGICAL PROCESSES
- C12Q1/00—Measuring or testing processes involving enzymes, nucleic acids or microorganisms; Compositions therefor; Processes of preparing such compositions
- C12Q1/66—Measuring or testing processes involving enzymes, nucleic acids or microorganisms; Compositions therefor; Processes of preparing such compositions involving luciferase
-
- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12Q—MEASURING OR TESTING PROCESSES INVOLVING ENZYMES, NUCLEIC ACIDS OR MICROORGANISMS; COMPOSITIONS OR TEST PAPERS THEREFOR; PROCESSES OF PREPARING SUCH COMPOSITIONS; CONDITION-RESPONSIVE CONTROL IN MICROBIOLOGICAL OR ENZYMOLOGICAL PROCESSES
- C12Q1/00—Measuring or testing processes involving enzymes, nucleic acids or microorganisms; Compositions therefor; Processes of preparing such compositions
- C12Q1/02—Measuring or testing processes involving enzymes, nucleic acids or microorganisms; Compositions therefor; Processes of preparing such compositions involving viable microorganisms
- C12Q1/04—Determining presence or kind of microorganism; Use of selective media for testing antibiotics or bacteriocides; Compositions containing a chemical indicator therefor
-
- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12Q—MEASURING OR TESTING PROCESSES INVOLVING ENZYMES, NUCLEIC ACIDS OR MICROORGANISMS; COMPOSITIONS OR TEST PAPERS THEREFOR; PROCESSES OF PREPARING SUCH COMPOSITIONS; CONDITION-RESPONSIVE CONTROL IN MICROBIOLOGICAL OR ENZYMOLOGICAL PROCESSES
- C12Q1/00—Measuring or testing processes involving enzymes, nucleic acids or microorganisms; Compositions therefor; Processes of preparing such compositions
- C12Q1/02—Measuring or testing processes involving enzymes, nucleic acids or microorganisms; Compositions therefor; Processes of preparing such compositions involving viable microorganisms
- C12Q1/04—Determining presence or kind of microorganism; Use of selective media for testing antibiotics or bacteriocides; Compositions containing a chemical indicator therefor
- C12Q1/045—Culture media therefor
Definitions
- the present invention relates to a microorganism testing medium and a microorganism testing method using the medium, and more particularly to a medium used in a microorganism testing using an ATP-luciferase method.
- the present invention can be effectively used for a microorganism test with a small number of bacteria, for example, a microorganism test in a bead, more specifically, a microbial test in a raw stuffed bean.
- Adenosin triphosphate is present collectively in living cells. This ATP is used as a coenzyme to carry out a run-enzyme-luciferase reaction, and the small amount of light generated in proportion to the ATP content is detected by a high-sensitivity detector. As a result, the ATP-luciferase method for confirming the presence of microorganisms has attracted attention as a rapid test method for microorganisms.
- the conventional medium emits light, so that the components of the medium emit light. Even if you use It could not be applied to low-bacteria counts, such as microbiological tests in stuffed beads.
- the ATP degrading ability may vary depending on the medium components, and may not be sufficiently degraded. Therefore, it is not always effective for all media components.
- the present invention solves such conventional drawbacks, and is a medium used in a microbial test using the ATP-luciferase method.
- the purpose is to provide a culture medium that does not cause measurement disturbances and a microbiological test method using the culture medium that is simple, accurate, and highly reliable. It is assumed that:
- the present invention effectively eliminates free ATP, which is an obstacle to measurement. And reduce the emission level of the cook ground, allowing microbial testing of several cells in the test sample, e.g. on a membrane filter.
- the distinction between bright spots and back ground caused by microorganisms was clarified, and the reliability of the inspection was ensured. It is also intended to provide biological testing methods. Disclosure of the invention
- the present invention firstly provides a microorganism testing medium obtained by treating a medium component containing adenosine triphosphate (ATP) with an acid phosphate. It is provided.
- a medium component containing adenosine triphosphate (ATP) adenosine triphosphate (ATP)
- the present invention secondly performs a microbial test by the ATP-luciferase method, and uses the first microbial test of the present invention as a microbial test medium.
- Another object of the present invention is to provide a microorganism testing method characterized by using a culture medium.
- FIG. 1 is a graph showing the amounts of luminescence of various yeast excres in Example 1 after enzyme treatment.
- FIG. 2 shows the amounts of luminescence of the various media in Example 3.
- the acid phosphate used in the first aspect of the present invention is a phosphine.
- the conditions for treating a medium component containing ATP with acid phosphatase include: a substrate containing ATP, such as an enzyme extrude;
- the reaction is preferably performed at a temperature of about 35 to 37 e C for 30 to 45 minutes.
- the medium component used in the present invention is composed of a commonly used medium component, and contains a large amount of ATP before being treated with acidic phosphatase. It contains high amounts.
- Examples of such a medium include, for example, a medium composition for aerobic general bacterial tests, in addition to yeast ex- cess containing a large amount of ATP, peptone and glucose. , M g S 0 4 ⁇ 7 H 2 0, L one Li down Gore acid, Ma Le DOO one scan, K 2 ⁇ ⁇ 0 4, Ru include media containing etc. agar.
- Table 1 shows an example of the composition of such a commonly used medium for aerobic single-bacteria test (referred to as ⁇ medium).
- Table 1 shows an example of the composition of such a commonly used medium for aerobic single-bacteria test (referred to as ⁇ medium).
- Table 1 Composition of medium A (g ZL) Bae Bed tons 5 Ma: NetBackup one scan 1 0 Group for a course 5 K 2 HP 04 3
- examples of medium compositions that have been often used for the detection of anaerobic bacteria such as lactic acid bacteria include, in addition to yeast extract containing a large amount of ATP, peptone, T ween 8 0, Sanna door Li cormorant-time, Group courses, L one Li down Gore-acid, K 2 ⁇ ⁇ 0 *, L one sheet scan te fin HC 1, Ma Le door over vinegar, etc. agar A medium containing.
- Table 2 shows an example of the composition of a medium (referred to as B medium) that has been conventionally used for the detection of anaerobic bacteria such as lactic acid bacteria.
- the yeast extract which is a component of the medium A shown in Table 1 above, contains a large amount of ATP, and thus is treated under the above-described processing conditions.
- ATP is almost completely degraded, and a medium (Ae medium) in which the yeast extract containing no ATP is replaced with the above yeast extract is prepared.
- Yeast excrete which is a component of the B medium shown in Table 2 above, also contains a large amount of ATP, so it decomposes ATP almost completely under the above processing conditions and does not contain ATP.
- Be medium a medium in which the yeast extract is replaced with the above yeast extract
- the second aspect of the present invention relates to a method for testing microorganisms, and in conducting a microorganism test by the ATP-run-ferase method,
- the present invention is characterized in that the medium for testing microorganisms according to the first aspect of the present invention is used as a medium for testing substances.
- the ATP is used as a coenzyme to carry out the luciferase luciferase reaction, and the ATP-run ferrase method is performed in proportion to the ATP content.
- This method is a known method for detecting the presence of microorganisms by detecting a very small amount of generated light with a high-sensitivity detector.
- the first medium of the present invention when performing a microbial test by such an ATP-luciferase method, is used as a microorganism test medium. Use microbial testing medium.
- composition of the medium can be changed within a range that can be easily modified by those skilled in the art, and antibiotics such as cycloheximide can be used. It is also possible to add substances such as nitric acid or isophosphoric acid in Hops.
- the first medium for testing microorganisms of the present invention is treated with acidic phosphatase while using a medium component containing ATP such as yeast ex.
- a medium component containing ATP such as yeast ex.
- ATP derived from the yeast extract and the like is almost completely degraded. Therefore, in microbiological tests using the ATP-luciferase method, the luminescence of substances other than microorganisms No risk of measurement failure.
- the second microorganism test method of the present invention free ATP, which is an obstacle to the measurement, is effectively removed, and a medium having a low background level of luminescence is used.
- ATP-leuciferase method of microorganisms captured on membrane membrane In the inspection by the method, the distinction between the bright spot and the knock ground caused by microorganisms is clarified, and it is possible to provide a method for examining microorganisms that ensures the reliability of the inspection. It is possible.
- Example 1 enzyme treatment
- a 10% solution of a 5% solution of a commercially available yeast extract was prepared and adjusted to pH 4.5 with L-ligonic acid. 3 7 acidic after heating 2 0 minutes hand off O scan off ⁇ motor 4 an peptidase 1 X 1 0 -. 3 U were added, Tsu rows 3 0 minutes reaction at 3 7 ° C. ATP in the reaction solution was measured by Luminometer Yuichi (manufactured by Nihon General) to confirm the completion of the reaction. After the completion of the reaction, a membrane (pore size: 0.22111) was passed through to remove fine particles in the solution, and the yeast extract of Hatcho Fri-cho was added to 100 ⁇ l. m 1 was obtained.
- the method of adding the medium to the medium is as follows.
- the whole amount (10 O ml) is preliminarily weighed for 2 L (liters) of medium components (without yeast excretion) (as described above).
- a medium and B medium) add 1.9 L (litre) of water, adjust the pH to the specified pH, add agar, auto-crap, add Ae medium and Be A medium was obtained.
- Example 3 The whole amount (10 O ml) is preliminarily weighed for 2 L (liters) of medium components (without yeast excretion) (as described above).
- a medium and B medium add 1.9 L (litre) of water, adjust the pH to the specified pH, add agar, auto-crap, add Ae medium and Be A medium was obtained.
- FIG. 2 shows the luminescence of various media. From FIG. 2, it can be seen that the A e medium and the B e medium prepared in Example 2 clearly emit less light than the conventionally used A and B mediums. In addition, according to the Ae medium and the Be medium prepared in Example 2, all the bright spots derived from the medium, which make it difficult to discriminate from the bacteria that often occurred in the conventional medium, were completely eliminated. It did not grow.
- Example 4 Comparparison of growth rate of aerobic bacteria
- differences in the degree of bacterial growth were evaluated.
- the results are shown in Table 3.
- ⁇ indicates normal growth, and ⁇ indicates good growth.
- Aerobic bacterium 5 (F1 avobacteri urn) ⁇ ⁇ Aerobic bacterium 6 (Flavobacterium ⁇ ) ⁇ ⁇ Aerobic bacterium 7 (F1 avobacter erium um) ⁇ ® Aerobic bacterium 8 (F1 avobac ter ium ⁇ ) ⁇ ⁇ Aerobic bacterium 9 (genus F1 avobac ter ium) ⁇ ⁇
- Example 4 In the same manner as in Example 4, the ⁇ medium and the Be medium were each fixed to a plate, and the anaerobic bacteria that appeared at the beer factory and were subcultured were respectively 10 cells. 1 cell Lumpur by or have to anaerobic culture, by comparing the number and large can of raw Ji was co- Russian knee, was to evaluate the differences in the growth of the bacteria. The results are shown in Table 4. However, ⁇ indicates normal growth, and ⁇ indicates good growth. As is clear from Table 4, the B medium and the Be medium showed almost no growth of the anaerobic bacteria. Table 4.
- the first microbial test medium of the present invention is obtained by treating the medium with acidic phosphatase while using a normal medium component containing ATP such as yeast extract.
- ATP derived from this yeast extract and the like is almost completely degraded, and the medium does not substantially contain free ATP which may interfere with measurement. Therefore, according to the first microorganism test medium of the present invention, in the microorganism test using the ATP-luciferase method, the luminescence derived from the medium is stably suppressed to an extremely low level. Therefore, there is no danger of causing a measurement failure due to luminescence of substances other than microorganisms.
- ATP of microorganisms trapped on membrane filter-Inspection by Luciferase method clearly distinguishes bright spots from microorganisms and back ground. As a result, there was no possibility of misidentifying microorganisms and other contaminants, and the reliability of the test could be ensured.
- the first culture medium for microbial testing of the present invention appears in a beer factory, etc., and has a higher growth rate of subcultured aerobic bacteria / anaerobic bacteria than a conventionally used culture medium. There is almost no difference in
- the luminescence level of the background during measurement is extremely low, and one microliter of microbial power is contained in one liter of sample. It is now possible to perform very precise and highly reliable microbiological examinations, such as discriminating whether or not cells are present.
- the luminescence level of the back ground can be suppressed very efficiently as compared with the case where the ablation treatment is performed. And can be.
- the second microorganism test method of the present invention since the first microorganism test medium of the present invention is used, the method is simple, very precise, and has high reliability. Microbial testing methods and What is it. Industrial applicability
- the present invention can be effectively used for a microorganism test with a small number of bacteria, for example, a microorganism test in a bead, more specifically, a microbial test in a raw stuffed bean. .
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Health & Medical Sciences (AREA)
- Wood Science & Technology (AREA)
- Proteomics, Peptides & Aminoacids (AREA)
- Zoology (AREA)
- Engineering & Computer Science (AREA)
- Immunology (AREA)
- Biochemistry (AREA)
- Microbiology (AREA)
- Molecular Biology (AREA)
- Analytical Chemistry (AREA)
- Biotechnology (AREA)
- Physics & Mathematics (AREA)
- Biophysics (AREA)
- Bioinformatics & Cheminformatics (AREA)
- General Engineering & Computer Science (AREA)
- General Health & Medical Sciences (AREA)
- Genetics & Genomics (AREA)
- Toxicology (AREA)
- Measuring Or Testing Involving Enzymes Or Micro-Organisms (AREA)
- Investigating Or Analysing Materials By The Use Of Chemical Reactions (AREA)
- Micro-Organisms Or Cultivation Processes Thereof (AREA)
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US08/722,146 US5756303A (en) | 1995-02-20 | 1996-02-19 | Culture medium and a microbiological test method employing the same |
EP96902476A EP0757104A4 (en) | 1995-02-20 | 1996-02-19 | MICROBIOLOGICAL EXAMINATION MEDIUM AND MICROBIOLOGICAL EXAMINATION METHOD USING THE SAME |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP7053757A JPH08224096A (ja) | 1995-02-20 | 1995-02-20 | 微生物検査用培地と該培地を用いた微生物検査方法 |
JP7/53757 | 1995-02-20 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1996026290A1 true WO1996026290A1 (fr) | 1996-08-29 |
Family
ID=12951697
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP1996/000363 WO1996026290A1 (fr) | 1995-02-20 | 1996-02-19 | Milieu d'examen microbiologique et procede d'examen microbiologique a l'aide de ce milieu |
Country Status (4)
Country | Link |
---|---|
US (1) | US5756303A (ja) |
EP (1) | EP0757104A4 (ja) |
JP (1) | JPH08224096A (ja) |
WO (1) | WO1996026290A1 (ja) |
Families Citing this family (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2000157295A (ja) * | 1998-11-25 | 2000-06-13 | Kikkoman Corp | 生細胞数の測定方法 |
JP2006508339A (ja) * | 2002-09-20 | 2006-03-09 | プロメガ コーポレイション | シトクロムp450活性を測定するための発光を利用する方法およびプローブ |
EP2272972A1 (en) | 2005-05-31 | 2011-01-12 | Promega Corporation | Luminogenic and fluorogenic compounds and methods to detect molecules or conditions |
WO2010008001A1 (ja) | 2008-07-14 | 2010-01-21 | 国立大学法人 東京大学 | Il-17に対するアプタマー及びその使用 |
US8288559B2 (en) * | 2008-08-18 | 2012-10-16 | Promega Corporation | Luminogenic compounds and methods to detect cytochrome P450 3A enzymes |
WO2014163482A1 (en) * | 2013-04-04 | 2014-10-09 | Malaysian Palm Oil Board (Mpob) | Palm protein dextrose agar (ppda) for detection and enumeration of fungi and yeast |
EP3099683B1 (en) | 2014-01-29 | 2020-08-05 | Promega Corporation | Quinone-masked probes as labeling reagents for cell uptake measurements |
JP2020137456A (ja) * | 2019-02-28 | 2020-09-03 | ビオフェルミン製薬株式会社 | 乳酸菌培養用培地 |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH02163098A (ja) * | 1988-12-14 | 1990-06-22 | Japan Organo Co Ltd | 生菌の検出法 |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3745090A (en) * | 1970-08-04 | 1973-07-10 | Nasa | Method of detecting and counting bacteria in body fluids |
US3971703A (en) * | 1974-05-31 | 1976-07-27 | The United States Of America As Represented By The Administrator Of The National Aeronautics And Space Administration | Method of detecting and counting bacteria |
-
1995
- 1995-02-20 JP JP7053757A patent/JPH08224096A/ja not_active Withdrawn
-
1996
- 1996-02-19 US US08/722,146 patent/US5756303A/en not_active Expired - Fee Related
- 1996-02-19 EP EP96902476A patent/EP0757104A4/en not_active Ceased
- 1996-02-19 WO PCT/JP1996/000363 patent/WO1996026290A1/ja not_active Application Discontinuation
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH02163098A (ja) * | 1988-12-14 | 1990-06-22 | Japan Organo Co Ltd | 生菌の検出法 |
Non-Patent Citations (2)
Title |
---|
PROC. SOC. EXP. BIOL. MED., Vol. 183, No. 1, (1986), TSAI T.S. et al., "Rapid Seperation and Quantitation of Mixed Microorganisms by Filtration and Bioluminescence", p. 74-80. * |
See also references of EP0757104A4 * |
Also Published As
Publication number | Publication date |
---|---|
JPH08224096A (ja) | 1996-09-03 |
US5756303A (en) | 1998-05-26 |
EP0757104A1 (en) | 1997-02-05 |
EP0757104A4 (en) | 1997-07-23 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
Schoonmaker et al. | Comparison of ribotyping and restriction enzyme analysis using pulsed-field gel electrophoresis for distinguishing Legionella pneumophila isolates obtained during a nosocomial outbreak | |
US5292644A (en) | Rapid process for detection coliform bacteria | |
JP4127846B2 (ja) | 微生物検出法及び微生物検出キット | |
JPH11510064A (ja) | バクテリア検出方法 | |
WO1996026290A1 (fr) | Milieu d'examen microbiologique et procede d'examen microbiologique a l'aide de ce milieu | |
Millership et al. | Aeromonas hydrophila in chlorinated water supplies | |
Mates et al. | Membrane filtration differentiation of E. coli from coliforms in the examination of water | |
Wolin et al. | Cell wall polymers and phage lysis of Lactobacillus plantarum | |
JPS58126784A (ja) | リン病の診断テスト法、リン菌のテスト用株およびテストキツト | |
Sobsey et al. | Development and evaluation of methods to detect coliphages in large volumes of water | |
JP2004201668A (ja) | 飲食品有害菌の検査 | |
JP7100329B2 (ja) | 汚泥分解用細菌、微生物分解細菌、微生物製剤、汚泥分解方法及び汚泥分解装置 | |
Wallace et al. | The use of selective and differential agars in the isolation of Escherichia coli O157 from dairy herds | |
Cunliffe et al. | Isolation of Aeromonas spp. from water by using anaerobic incubation | |
WO2000031292A1 (fr) | Procede de comptage de cellules vivantes | |
D'Mello et al. | The action of sodium deoxycholate on Escherichia coli | |
US20070281291A1 (en) | Method and Medium for the Rapid Detection of E.Coli in Liquid Samples | |
Wilson et al. | Correlation of the Sulphite Reduction Test with Other Tests in the Bacterio-Logical Examination of Water. | |
Nystrand | Saccharococcus thermophilus gen. nov., sp. nov. isolated from beet sugar extraction | |
Koenraad et al. | Methods for the detection of Campylobacter in sewage: evaluation of efficacy of enrichment and isolation media, applicability of polymerase chain reaction and latex agglutination assay | |
Evans | A note on the use of conductimetry in brewery microbiological control | |
JP3174518B2 (ja) | 汚水の生物処理の簡易診断方法 | |
JPH08140697A (ja) | 耐熱性好酸性菌の検出用選択培地およびその検出法 | |
JP2937245B2 (ja) | 抗原抗体反応による乳酸菌の検出法 | |
Uemura et al. | Identification of species among the Lactobacillus acidophilus group by electrophoresis of lactate dehydrogenases |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
AK | Designated states |
Kind code of ref document: A1 Designated state(s): US |
|
AL | Designated countries for regional patents |
Kind code of ref document: A1 Designated state(s): AT BE CH DE DK ES FR GB GR IE IT LU MC NL PT SE |
|
WWE | Wipo information: entry into national phase |
Ref document number: 08722146 Country of ref document: US |
|
WWE | Wipo information: entry into national phase |
Ref document number: 1996902476 Country of ref document: EP |
|
121 | Ep: the epo has been informed by wipo that ep was designated in this application | ||
WWP | Wipo information: published in national office |
Ref document number: 1996902476 Country of ref document: EP |
|
WWR | Wipo information: refused in national office |
Ref document number: 1996902476 Country of ref document: EP |
|
WWW | Wipo information: withdrawn in national office |
Ref document number: 1996902476 Country of ref document: EP |