Related Experiment Video
Updated: Jan 25, 2026

The Cultivation, Growth, and Viability of Lactic Acid Bacteria: A Quality Control Perspective
Published on: June 16, 2022
Effectiveness of Commercial Germicide Products Against the Ropy Slime-Producing Lactic Acid Bacteria
Pia M Mäkelä1, Hannu J Korkeala1, E Kaarina Sand1
1Department of Food and Environmental Hygiene, College of Veterinary Medicine, P.O. Box 6, SF-00581 Helsinki, Finland.
Abstract:
The effectiveness of certain commercial germicides against ropy slime-producing lactic acid bacteria was studied using the 5-5-5-suspension test and a tray test which simulated surface disinfection conditions in actual use. The rate of the destruction of the bacteria was lower in the tray test, and the bacteria seemed to be more resistant to the germicides on a steel surface than in vitro. The sanitizer products proved to be more effective than the detergent-sanitizer products. Quaternary ammonium products and an acid sanitizer with hydrogen peroxide were more effective than products containing chlorine compounds and polyhexamethylene biguanide chloride. The effectiveness of hypochlorite products appeared to be dependent on the concentration of available chlorine. The resistance of the ropy slime-producing bacteria may prove problematic if ineffective germicides are used. The use of detergent sanitizers and low-concentration hypochlorite products is not recommended.
More Related Videos
05:51Production of Germ-Free Fast-Growing Broilers from a Commercial Line for Microbiota Studies
Published on: June 18, 2020
10:23Characterizing Mediated Extracellular Electron Transfer in Lactic Acid Bacteria with a Three-Electrode, Two-Chamber Bioelectrochemical System
Published on: August 23, 2024
Related Concept Videos
Substituent Effects on Acidity of Carboxylic Acids
Products of the Citric Acid Cycle
Ions as Acids and Bases
Salts are ionic compounds composed of cations and anions, either of which may be capable of undergoing an acid or base ionization reaction with water. Aqueous salt solutions, therefore, may be acidic, basic, or neutral, depending on the relative acid-base strengths of the salt’s constituent ions. For example, dissolving the ammonium chloride in water results in its dissociation, as described by the equation:
Weak Acid Solutions
The Roles of Bacteria and Fungi in Plant Nutrition
The Citric Acid Cycle