Effect of Milk Constituents on the Persistence of Sodium Hypochlorite Sanitizer

Hekmati, M.; Bradley, Robert L.

doi:10.3168/jds.s0022-0302(79)83199-9

Cited by 16 publications

(6 citation statements)

References 2 publications

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“…The high fat content of whole milk powder (26.62%) may also have contributed to the poor solubility of the powder after its sterilization. These results agree with those of Hekmati & Bradley (1979), who demonstrated that the protein fraction reacted more rapidly than any other milk constituents (lactose, fat) in contact with sodium hypochlorite. Dony & Millet (1973) also mentioned some possibilities of interaction between proteins and bactericidal agents.…”

Section: T Y P E O F O R G a N I C M A T T E Rsupporting

confidence: 92%

Neutralization of the activity of eight disinfectants by organic matter

Gélinas

Goulet

1983

Journal of Applied Bacteriology

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The effect of organic matter on the activity of eight disinfectants was evaluated. Three types of interfering substrates (whole milk powder, dried beef blood and fish meal) were tested according to the method of Whitmore and Miner adapted to the AOAC use-dilution method. Glutaraldehyde and to a certain extent, chlorhexidine acetate and the amphoteric surfactant kept their disinfecting activity after contact with high concentrations of organic matter. The quaternary ammonium compound as well as the quaternary ammonium-glutaraldehyde complex were more readily neutralized whereas anionic acid, iodophor and sodium hypochlorite did not tolerate the presence of organic matter. The neutralizing activity of powders was correlated to their solubility and composition.

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Section: T Y P E O F O R G a N I C M A T T E Rsupporting

confidence: 92%

Neutralization of the activity of eight disinfectants by organic matter

Gélinas

Goulet

1983

Journal of Applied Bacteriology

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“…Segundo Fonseca & Santos (2000) o cloro é um composto pouco tóxico, mas que apresenta ação irritante aos tecidos e tem sua ação reduzida pela presença de matéria orgânica. Hekmati & Bradley (1979) descreveram que produtos à base de cloro se tornavam instáveis na presença de proteína com rápida inativação. Relataram ainda que a albumina, globulina e caseína são os componentes do leite que mais rapidamente inativam o cloro.…”

Section: Discussionunclassified

Eficácia in vitro de desinfetantes utilizados na anti-sepsia dos tetos frente a leveduras isoladas do leite de vaca com mastite

et al. 2012

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Objetivou-se com este estudo avaliar a sensibilidade in vitro de leveduras isoladas do leite de vaca com mastite frente a alguns desinfetantes comerciais utilizados no pré e pós-dipping em propriedades leiteiras do Estado de Pernambuco. Após a identificação, 12 isolados de leveduras foram submetidos aos testes com os seguintes princípios ativos: iodo (0,57%), cloro (2,5%), clorexidine (2,0%), ácido láctico (2,0%) e amônia quaternária (2,0%) em cinco tempos distintos (15", 30", 60", 300" e 600"). Observou-se que 100% dos isolados mostraram-se sensíveis ao clorexidine, em todos os tempos de exposição. O iodo obteve o segundo melhor resultado com os seguintes percentuais: 83,33% foram sensíveis em 15" de exposição, 91,67% em 30" e 100% foram sensíveis nos tempos 60", 300" e 600". Para o ácido láctico, os resultados foram: 41,67% sensíveis em 15" de exposição, 58,33% em 30", 66,67% em 60" e 300" e 75% em 600". Na Análise dos resultados para amônia quaternária, observou-se que 66,67% foram sensíveis nos tempos 15" e 30", e 91,67% em 60", 300" e 600". Em relação ao princípio ativo cloro apenas 16,67% foram sensíveis no tempo de 15" e 30", e 25% em 60", 300" e 600". Conclui-se que o clorexidine e o iodo apresentam atividade desinfetante significativamente superior ao cloro, frente a leveduras envolvidas nos processos infecciosos da glândula mamária em bovinos. É necessário realizar uma avaliação periódica da atividade desinfetante dos produtos utilizados na rotina do pré e pós-dipping nas propriedades leiteiras frente aos microrganismos mais comumente envolvidos nos casos de mastite (micótica ou bacteriana), pois esta é uma medida eficaz para reduzir a frequência de casos de mastite nos rebanhos.

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“…Another study utilized iodometric titration for the determination of the kinetics of the reaction of sodium hypochlorite with milk. This study showed that the main components of milk that react rapidly with sodium hypochlorite were lactoglobulin, lactalbumin, casein, lactose, insoluble lipoprotein, soluble lipoprotein, and fat globule membrane lipids 19 . A recent study in Iran showed that the government-recommended methods for the determination of bleach solution adulteration in milk were not applicable for this aim 20 , which may be due to the fast reaction of hypochlorite anions with milk and low residual concentration of it in milk received by the end-users.…”

Section: Introductionmentioning

confidence: 91%

A paired emitter–detector diode-based photometer for the determination of sodium hypochlorite adulteration in milk

Bastan

Ahmadi

Madrakian

et al. 2023

Sci Rep

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This paper reports on developing a low cost but efficient paired emitter–detector diode (PEDD)-based photometer. The photometer consists of a white light-emitting diode (LED) as the emitter diode, an RGB LED as the detector diode, and a multimeter for recoding the signal. The developed PEDD-based photometer was utilized for the determination of liquid bleach adulteration in cow milk samples. N,N-Diethyl-p-phenylenediamine sulfate aqueous solution of pH 6 was used as a probe to monitor the presence of residual active chlorine in milk. The results showed that the developed method could be used to determine sodium hypochlorite in the concentration range of 0.5 to 20.0 ppm Cl2 with 0.14 and 0.46 ppm Cl2 limit of detection and limit of quantification, respectively. The intraday and interday precisions of the method at two concentration levels of 5.5 and 13.7 ppm Cl2 were 1.04% and 0.52%, and 1.81% and 1.02%, respectively. The recoveries of 114.2% and 106.9% were obtained for 5.5 and 13.7 ppm Cl2 concentrations levels, respectively. Real sample analyzes results showed that “maybe” liquid bleach adulteration in milk is the case for local distributors of raw milk.

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Effect of Milk Constituents on the Persistence of Sodium Hypochlorite Sanitizer

Cited by 16 publications

References 2 publications

Neutralization of the activity of eight disinfectants by organic matter

Neutralization of the activity of eight disinfectants by organic matter

Eficácia in vitro de desinfetantes utilizados na anti-sepsia dos tetos frente a leveduras isoladas do leite de vaca com mastite

A paired emitter–detector diode-based photometer for the determination of sodium hypochlorite adulteration in milk

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