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Syntrophococcus sucromutans Krumholz and Bryant


Product category
Product type
Strain designation
DSM 3224 [S195]
Type strain
Isolation source
Rumen of cattle
Product format
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ATCC determines the biosafety level of a material based on our risk assessment as guided by the current edition of Biosafety in Microbiological and Biomedical Laboratories (BMBL), U.S. Department of Health and Human Services. It is your responsibility to understand the hazards associated with the material per your organization’s policies and procedures as well as any other applicable regulations as enforced by your local or national agencies.

ATCC highly recommends that appropriate personal protective equipment is always used when handling vials. For cultures that require storage in liquid nitrogen, it is important to note that some vials may leak when submersed in liquid nitrogen and will slowly fill with liquid nitrogen. Upon thawing, the conversion of the liquid nitrogen back to its gas phase may result in the vial exploding or blowing off its cap with dangerous force creating flying debris. Unless necessary, ATCC recommends that these cultures be stored in the vapor phase of liquid nitrogen rather than submersed in liquid nitrogen.

Detailed product information


Specific applications
Catabolizes ferulate
Catabolizes syringate

Handling information

80% H2, 20% CO2
Handling procedure
1. Sterilize the top of the Balch tube by spraying it with 70% ethanol and then flaming the top.

2. If needed exchange the gas in the Balch tube for 80% N2 20% CO2.

3. If the medium is pink (see discussion about resazurin) add 2.0 ml of reducing agent (1.5% sodium sulfide, stock solution) per 100 ml of medium.  Let the medium sit at room temperature for 10 to 20 minutes, until the resazurin becomes colorless, before inoculating.

4. When the Balch tube is ready to inoculate, open the vial according to enclosed instructions.  Take an anaerobic

1.0 ml syringe (see discussion below) tipped with a 22 gauge needle and withdraw 0.5 ml of 2188 medium from the Balch tube and rehydrate the freeze dried pellet. Immediately place the rehydrated vial under a stream of sterile gas to maintain anaerobic conditions.

5. Using the same syringe transfer the rehydrated cell suspension back into a tube of #2189 broth.  Plate 0.1 ml of the inoculated culture onto a non-selective agar medium and incubate aerobically at 37oC.  Inoculate a nonselective anaerobic and aerobic broth. Transfer 0.5 ml of the rehydrated culture to a second tube of 2188 medium.    Incubate the inoculated tubes at 37 oC.

6. Growth should be detected in the #2189 broth within 24  hours.  No growth should be detected on the aerobic plate, or in the nonselective aerobic or anaerobic broth.


a. Balch tubes (available from Bellco Glass, Vineland ,NJ) are specially designed for anaerobic work  and use an aluminum crimp cap to hold a rubber stopper in place.  Needles can easily be inserted through the stopper, and the tubes can be pressurized to 2 atm.  /alternatively, serum vials may be used, or screw cap tubes with butyl rubber stoppers.  In the latter case the stopper may be removed and the tube placed under a cannula system that dispenses sterile, oxygen-free gas for the addition of reducing agents or inoculation.

b. Resazurin is a commonly used redox indicator that is pink when the redox potential is above –50 mv.,  and colorless when the redox potential is below –110 mv. i.e. highly reducing.  Most strict anaerobes require this low redox potential for optimum growth.

c.  To obtain a fully reduced medium, it is necessary that the medium be anoxic and that a reducing agent be added.  Common reducing agents are sodium sulfide, cysteine, dithiothreitol, and titanium citrate.

d. Syringes can be made anaerobic by one of two methods.  1.             Displace the dead space in the syringe with a sterile

Handling notes
Cells appear as motile rods in singles and pairs with sub-terminal spores. 


Deposited as
Syntrophococcus sucromutans Krumholz and Bryant
H Hippe
Chain of custody
ATCC <-- H Hippe <-- M.P. Bryant <-- L.R. Krumholz
Type of isolate
Year of origin

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Intended use
This product is intended for laboratory research use only. It is not intended for any animal or human therapeutic use, any human or animal consumption, or any diagnostic use.

The product is provided 'AS IS' and the viability of ATCC® products is warranted for 30 days from the date of shipment, provided that the customer has stored and handled the product according to the information included on the product information sheet, website, and Certificate of Analysis. For living cultures, ATCC lists the media formulation and reagents that have been found to be effective for the product. While other unspecified media and reagents may also produce satisfactory results, a change in the ATCC and/or depositor-recommended protocols may affect the recovery, growth, and/or function of the product. If an alternative medium formulation or reagent is used, the ATCC warranty for viability is no longer valid.  Except as expressly set forth herein, no other warranties of any kind are provided, express or implied, including, but not limited to, any implied warranties of merchantability, fitness for a particular purpose, manufacture according to cGMP standards, typicality, safety, accuracy, and/or noninfringement.


This product is intended for laboratory research use only. It is not intended for any animal or human therapeutic use, any human or animal consumption, or any diagnostic use. Any proposed commercial use is prohibited without a license from ATCC.

While ATCC uses reasonable efforts to include accurate and up-to-date information on this product sheet, ATCC makes no warranties or representations as to its accuracy. Citations from scientific literature and patents are provided for informational purposes only. ATCC does not warrant that such information has been confirmed to be accurate or complete and the customer bears the sole responsibility of confirming the accuracy and completeness of any such information.

This product is sent on the condition that the customer is responsible for and assumes all risk and responsibility in connection with the receipt, handling, storage, disposal, and use of the ATCC product including without limitation taking all appropriate safety and handling precautions to minimize health or environmental risk. As a condition of receiving the material, the customer agrees that any activity undertaken with the ATCC product and any progeny or modifications will be conducted in compliance with all applicable laws, regulations, and guidelines. This product is provided 'AS IS' with no representations or warranties whatsoever except as expressly set forth herein and in no event shall ATCC, its parents, subsidiaries, directors, officers, agents, employees, assigns, successors, and affiliates be liable for indirect, special, incidental, or consequential damages of any kind in connection with or arising out of the customer's use of the product. While reasonable effort is made to ensure authenticity and reliability of materials on deposit, ATCC is not liable for damages arising from the misidentification or misrepresentation of such materials.

Please see the material transfer agreement (MTA) for further details regarding the use of this product. The MTA is available at

Permits & Restrictions

Import Permit for the State of Hawaii

If shipping to the U.S. state of Hawaii, you must provide either an import permit or documentation stating that an import permit is not required. We cannot ship this item until we receive this documentation. Contact the Hawaii Department of Agriculture (HDOA), Plant Industry Division, Plant Quarantine Branch to determine if an import permit is required.



Curated Citations

Validation list no. 21. Int. J. Syst. Bacteriol. 36: 489, 1986.

Krumholz LR, Bryant MP. Syntrophococcus sucromutans sp. nov. gen. nov. uses carbohydrates as electron donors and formate, methoxymonobenzenoids or Methanobrevibacter as eletron acceptor systems. Arch. Microbiol. 143: 313-318, 1986.

type strain

DSM, personal communication

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