COLOR STABLE HYPOCHLOROUS SANITIZER AND METHODS
Manual warewashing in common food service locations is typically performed in a multicompartment sink. In one basin the ware is contacted with an aqueous detergent. The cleaned ware is rinsed in a subsequent sink and is then sanitized in a sanitizing solution in a third sink. Hypochlorite bleaches,...
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Main Authors | , |
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Format | Patent |
Language | English French |
Published |
18.01.2001
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Edition | 7 |
Subjects | |
Online Access | Get full text |
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Abstract | Manual warewashing in common food service locations is typically performed in a multicompartment sink. In one basin the ware is contacted with an aqueous detergent. The cleaned ware is rinsed in a subsequent sink and is then sanitized in a sanitizing solution in a third sink. Hypochlorite bleaches, if adjusted to an appropriate pH, can maintain substantial sanitizing capacity while not decolorizing otherwise oxidatively sensitive dyes. In the method of the invention, the sanitizing solution adjusted to a pH of less than about 7 containing a dye can maintain a stable dye solution for a period of time greater than the time required to deplete 90 % or more of the OC in solution. An indication of the existence of active sanitizer in the sanitizer step based on the presence of color in the aqueous solution is thus obtained.
Dans les entreprises de restauration, la plonge manuelle est généralement effectuée dans un évier à plusieurs compartiments. Dans un bassin la vaisselle est mise en contact avec une solution aqueuse d'un agent tensioactif. La vaisselle est rincée dans un autre bassin, puis désinfectée dans un troisième bassin au moyen d'une solution désinfectante. Des décolorants à base d'hypochlorite fortement oxydant, permettent, lorsque le pH est ajusté à une valeur convenable, de maintenir une capacité sensiblement désinfectante tout en ne décolorant pas des colorants sensibles à l'oxydation. Dans le procédé de l'invention, la solution désinfectante, ajustée à un pH inférieur à environ 7, contenant un colorant, permet de garder une coloration stable durant une période supérieure à la durée requise pour épuiser 90 % ou plus d'ion OCl<-1> en solution. Il en résulte une indication satisfaisante de la présence de désinfectant actif sur la base de la couleur de la solution désinfectante. |
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AbstractList | Manual warewashing in common food service locations is typically performed in a multicompartment sink. In one basin the ware is contacted with an aqueous detergent. The cleaned ware is rinsed in a subsequent sink and is then sanitized in a sanitizing solution in a third sink. Hypochlorite bleaches, if adjusted to an appropriate pH, can maintain substantial sanitizing capacity while not decolorizing otherwise oxidatively sensitive dyes. In the method of the invention, the sanitizing solution adjusted to a pH of less than about 7 containing a dye can maintain a stable dye solution for a period of time greater than the time required to deplete 90 % or more of the OC in solution. An indication of the existence of active sanitizer in the sanitizer step based on the presence of color in the aqueous solution is thus obtained.
Dans les entreprises de restauration, la plonge manuelle est généralement effectuée dans un évier à plusieurs compartiments. Dans un bassin la vaisselle est mise en contact avec une solution aqueuse d'un agent tensioactif. La vaisselle est rincée dans un autre bassin, puis désinfectée dans un troisième bassin au moyen d'une solution désinfectante. Des décolorants à base d'hypochlorite fortement oxydant, permettent, lorsque le pH est ajusté à une valeur convenable, de maintenir une capacité sensiblement désinfectante tout en ne décolorant pas des colorants sensibles à l'oxydation. Dans le procédé de l'invention, la solution désinfectante, ajustée à un pH inférieur à environ 7, contenant un colorant, permet de garder une coloration stable durant une période supérieure à la durée requise pour épuiser 90 % ou plus d'ion OCl<-1> en solution. Il en résulte une indication satisfaisante de la présence de désinfectant actif sur la base de la couleur de la solution désinfectante. |
Author | BOWLING, DARRYL, C SOWLE, EDDIE, D |
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DocumentTitleAlternate | DESINFECTANT HYPOCHLOREUX A COULEUR STABLE ET PROCEDES ASSOCIES |
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Snippet | Manual warewashing in common food service locations is typically performed in a multicompartment sink. In one basin the ware is contacted with an aqueous... |
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SubjectTerms | ANIMAL AND VEGETABLE OILS, FATS, FATTY SUBSTANCES AND WAXES CANDLES CHEMISTRY DETERGENT COMPOSITIONS DETERGENTS FATTY ACIDS THEREFROM METALLURGY RECOVERY OF GLYCEROL RESIN SOAPS SOAP OR SOAP-MAKING USE OF SINGLE SUBSTANCES AS DETERGENTS |
Title | COLOR STABLE HYPOCHLOROUS SANITIZER AND METHODS |
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