Derivation of Quantitative Removal Efficiency of Protein Stain from K/S Value of Washing Test Fabric Soiled with Hemoglobin

Kurono, Rie; Nishio, Naoki; Oya, Masaru

doi:10.5650/jos.62.223

Cited by 4 publications

(2 citation statements)

References 9 publications

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“…The K/S value was calculated using the Kubelka–Munk equation ( Eq 1 ), with the average value obtained by measuring the surface reflectance (Y value) at the front and back of the sample as the R value, and the cleaning rate was calculated using Eq 2 : where K is the light absorption coefficient, S is the light diffusion coefficient, D is the cleaning efficiency, K/S S is the K/S value of the soiled cloth, K/S W is the K/S value of the washed cloth, and K/S 0 is K/S value of the raw white cloth. The K/S detergency (%) of the soiled fabric prepared using this method was found to be consistent with the detergency (%) obtained using the Lowry method after extraction using 0.1 N NaOH aqueous solution, with the exception of washing using bleaching agents [ 40 , 41 ].…”

Section: Methodssupporting

confidence: 66%

“…where K is the light absorption coefficient, S is the light diffusion coefficient, D is the cleaning efficiency, K/S S is the K/S value of the soiled cloth, K/S W is the K/S value of the washed cloth, and K/S 0 is K/S value of the raw white cloth. The K/S detergency (%) of the soiled fabric prepared using this method was found to be consistent with the detergency (%) obtained using the Lowry method after extraction using 0.1 N NaOH aqueous solution, with the exception of washing using bleaching agents [40,41].…”

Section: Materials Preparationsupporting

confidence: 68%

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Kinetic analysis of hemoglobin detergency by probability density functional method

et al. 2020

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In this study, washing tests were performed using samples prepared by contaminating fabrics with hemoglobin, and a kinetic analysis was conducted based the probability density functional method, which expresses the cleaning power using two parameters σ rl (related to the cleaning mechanism) and μ rl (related to the level of cleaning power). This method allows for the processing of uncertainties specific to protein washing under the assumption that the soil adhesion and detergency are in accordance with a normal distribution. A certain amount of hemoglobin solution was soaked in a cloth, dried, and steam-treated, and then used as a sample for a cleaning test. Two parameters σ rl and μ rl were calculated based on the detergency (%) after 5 min, 10 min, 15 min, and 20 min of washing with respect to different pH and temperature levels, and different sodium dodecyl sulfate (SDS) concentration and temperature levels. Based on the results, the value of σ rl indicated that the hemoglobin was removed by the dissolving action. In addition, μ rl increased in accordance with an increase in the pH, SDS concentration, and temperature. With respect to μ rl , the relationship of ΔX + ΔY = Δ(X+Y) was observed in several cases, where ΔX represents the effect of the pH or SDS concentration, ΔY is the temperature effect, and Δ(X+Y) is the combined effect. Therefore, there may be an additive relationship between the pH and temperature effects, and the SDS concentration and temperature effects.

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Section: Methodssupporting

confidence: 66%

Section: Materials Preparationsupporting

confidence: 68%

Kinetic analysis of hemoglobin detergency by probability density functional method

et al. 2020

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Direct Quantitative Analysis on Detergency of Soil Components Using ATR-FT/IR

Isaka

Ohashi

Koizumi

et al. 2021

JFST

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Comparison Test of Oily Soil Removal of Japanese Laundry Detergents Using a Regression Formula to Derive Soil Quantity from K/S Value of Colored Oil

Kojima¹,

Oya²

2015

Tenside Surfactants Detergents

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How to calculate the amount of colored oily soil adhered to fabric by measuring the reflectance was studied. Fatty acid, triacylglycerol and hydrocarbon were selected as typical oily soil and mixed with Sudan IV. Removal of fatty acid was greatly affected by alkaline property of washing liquid, and those of triacylglycerol and hydrocarbon were largely affected by interfacial activity of washing liquid. The detergency of Japanese artificial soiled fabric was largely affected by the fatty acid composition.

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Derivation of Quantitative Removal Efficiency of Protein Stain from K/S Value of Washing Test Fabric Soiled with Hemoglobin

Cited by 4 publications

References 9 publications

Kinetic analysis of hemoglobin detergency by probability density functional method

Kinetic analysis of hemoglobin detergency by probability density functional method

Direct Quantitative Analysis on Detergency of Soil Components Using ATR-FT/IR

Comparison Test of Oily Soil Removal of Japanese Laundry Detergents Using a Regression Formula to Derive Soil Quantity from K/S Value of Colored Oil

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