Amphoteric surfactant-type antimicrobial agent"LEBON T-2"

By blending with amphoteric or nonionic surfactants, the sanitizing detergent can be adjusted to combine antibacterial and cleaning power.

What's great about SANYO CHEMICAL's amphoteric surfactant-type antimicrobial agents "LEBON T-2"

Amphoteric surfactant type antimicrobial agent "LEBON T-2"

By blending with amphoteric surfactants and non-ionic surfactants, a sanitizing detergent with both antimicrobial and cleaning power can be adjusted.

・ Exhibits a broad antimicrobial spectrum.
・ Demonstrates stable antimicrobial activity, with little precipitation or decrease in antimicrobial activity due to organic matter such as proteins.
・Demonstrates excellent antimicrobial activity even in alkaline conditions.

Structural formula of active ingredient

Appearance: Pale yellow liquid (may turn cloudy and solidify at low temperatures)
Odor : Slight peculiar odor
Active ingredient : Approx. 40% by mass
pH : Approx. 7 (2.5% by mass in water)

Examples of Uses

The following are examples of formulations of sanitizing detergents for use in food processing plants.

Example of formulation (indicated by concentration of active ingredients)
(A)LEBON T-2 :   4 mass%
(B)Nonionic surfactant : 20 mass%
(C)Fatty acid ethanolamide :   5 mass%
(D)EDTA : 1 mass%
(E)Sodium hydroxide: Appropriate amount (amount to bring pH to 9)
   Water : Remaining amount
Total 100

Example of blending method
While stirring water, add (B) and dissolve uniformly. Then add (A), (C), (D), and (E), and stir until uniform. (No heating or cooling is required.)

Performance data

Minimum inhibitory concentration (MIC) of "LEBON T-2" against bacteria and fungi

Minimum inhibitory concentration (MIC) of "LEBON T-2" against various bacteria
bacterial strain MIC mass ppm (active ingredient)
Pseudomonas aeruginosa  400
Pseudomonas cepacia 200
 Escherichia coli 100
Bacillus subtilis 50
Staphylococcus aureus  12.5
Minimum inhibitory concentration (MIC) of "LEBON T-2" against various fungi
Bacterial strain MIC mass ppm (active ingredient)
Penicillium citrinum (blue mold) 800
Rhizopus oryzae 400
Aspergillus niger (black mold) 400

Test Method
 Results of drug dilution agar plate method according to the MIC measurement method of the Japanese Society of Chemotherapy.
 Medium: Mueller Hinton medium (for bacteria)
Potato dextrose agar (for fungi)
 Inoculum: Approximately 106 CFU/mL

Yamamoto, N., Doi, J., Takada, K., Hashimoto, I., Shinoda, K., and Oyama, A., Journal of Bacteria and Mold Control, 18(10), 477-483 (1990).


For use as-is with only dilution
Depending on the purpose and conditions of use, dilute the product with tap water so that the concentration of the active ingredients ranges from several mass ppm to several thousand mass ppm.

When blending with other agents to produce sanitizing detergents, etc.

  Please check the stability and antimicrobial activity with other ingredients before use.

When used at low temperatures

  Turbidity may occur at low temperatures. If turbidity occurs, heat the product to 50-60°C to make it homogeneous before use.

Precautions against misuse
 When mixed with other drugs, precipitation may occur depending on the temperature and concentration used. When using this product in combination with other ingredients, check the stability of the mixture beforehand and use it within the range where there are no problems.

 Examples of substances that are likely to cause precipitation include the following
 Iodine tincture, phenol, sulfosalicylic acid, hydrogen peroxide, silver nitrate, tannic acid, sodium sulfosalicylate, potassium permanganate, potassium dichromate, etc.

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