Methods for the Detection of Survivors on Milk Handling Equipment with Reference to the Use of Disinfectant Inhibitors

Tolerance of Bacteria for Quaternary Ammonium Compounds

“…Another favorable feature of quaternary ammonium compounds is that they are considered noncorrosive to equipment. Cousins (1963) has shown that residual quaternary ammonium compound remains on equipment and the quantity depends on processing and cleaning operations. The quantity of organic material present depends upon the food processing operation as well as the cleaning and rinsing process.…”

Bacterial adaptation and resistance to antiseptics, disinfectants and preservatives is not a new phenomenon

“…106 Residual concentrations of QACs were considered by Cousins. 60 The possible effects of residual levels of biocides as a selective process for resistant bacteria have, much more recently, been reexamined. 107,108 Preservatives are an acceptable part of the formulation of many pharmaceutical and cosmetic products.…”

Occurrence, prevention, and monitoring of microbial quality loss of foods and dairy products

“…Preventative quality assurance implying closing the stable before the foal has gone, constant vigilance along the processing lines is an essential element in such an approach. Particular attention has to be paid to barring organisms of health significance or spoiling agents that might occur and even be enriched on machinery, in pipes, etc [1118][1119][1120][1121][1122].125 1 such organisms have to be sought by the use of appropriate media. 1252 ( Although selective media are more convenient, they can only be used on objects that are neither too dry, 1253 ' 1254 nor have recently been treated with disinfectants.…”