WO2019061375A1 - Procédé et appareil de démonstration visuelle des atouts de lutte contre les mauvaises odeurs de produits de consommation - Google Patents

Procédé et appareil de démonstration visuelle des atouts de lutte contre les mauvaises odeurs de produits de consommation Download PDF

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Publication number
WO2019061375A1
WO2019061375A1 PCT/CN2017/104708 CN2017104708W WO2019061375A1 WO 2019061375 A1 WO2019061375 A1 WO 2019061375A1 CN 2017104708 W CN2017104708 W CN 2017104708W WO 2019061375 A1 WO2019061375 A1 WO 2019061375A1
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WO
WIPO (PCT)
Prior art keywords
substrate
product
malodor
fabric
additional
Prior art date
Application number
PCT/CN2017/104708
Other languages
English (en)
Inventor
Yuxiang Liu
Yoshiki Ishida
Fumi Iuchi
Ryohei Ohtani
Chizuru TANIGUCHI
Junko Katayama
Kang MENG
Original Assignee
The Procter & Gamble Company
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by The Procter & Gamble Company filed Critical The Procter & Gamble Company
Priority to JP2020517545A priority Critical patent/JP2020535418A/ja
Priority to CN201780095982.9A priority patent/CN111213055A/zh
Priority to PCT/CN2017/104708 priority patent/WO2019061375A1/fr
Publication of WO2019061375A1 publication Critical patent/WO2019061375A1/fr

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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N31/00—Investigating or analysing non-biological materials by the use of the chemical methods specified in the subgroup; Apparatus specially adapted for such methods
    • G01N31/22—Investigating or analysing non-biological materials by the use of the chemical methods specified in the subgroup; Apparatus specially adapted for such methods using chemical indicators
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
    • G01N33/36—Textiles
    • G01N33/367—Fabric or woven textiles

Definitions

  • This invention relates to a method and an apparatus for visually demonstrating the malodor control benefit of a consumer product.
  • Certain bacteria such as Proteus spp., Klebsiella pneumoniae and Staphylococcus aureus, can easily grow on fabrics, countertops, and/or other household surfaces. They are known to break down organic matters and release hydrogen sulfide and other foul-smelling fluids. The malodor generated by such bacteria overtime can be very unpleasant. Therefore, various consumer products have been made available for cleaning such fabrics, countertops and/or other household surfaces, especially for controlling malodor generated by such bacteria.
  • the present invention relates to a method for visually demonstrating the malodor control benefit of a consumer product, which comprises the steps of:
  • a) providing a consumer product and a demonstration apparatus while such demonstration apparatus includes: (1) a treatment substrate; (2) a malodor-generating composition capable of generating one or more volatile compound characterized by a humanly perceivable malodor; and (3) an indicator substrate capable of generating a visual change upon exposure to such one or more fluid;
  • step (b) exposing the indicator substrate to the treatment substrate for a predetermined duration (preferably in a closed chamber) ;
  • the consumer product may be selected from the group consisting of a laundry detergent product, a fabric enhancer product, a fabric refresher product, a dish washing detergent product, a hard surfactant cleaning product, a personal cleansing product, and combinations thereof.
  • the consumer product is a laundry detergent product, a fabric enhancer product or a fabric refresher product, while the treatment substrate is a fabric.
  • the indicator substrate has a garment-or towel-like shape. The garment-shaped indicator substrate provides the visual cue needed for the consumers to understand the association between the visual change in the indicator substrate with malodor generated by untreated or improperly treated garments.
  • the one or more volatile compound generated by the malodor-generating composition comprises hydrogen sulfide gas
  • the indicator substrate comprises lead acetate, which will turn into a darker color upon extended exposure to the hydrogen sulfide gas.
  • the malodor-generating composition comprises a bacterium capable of releasing hydrogen sulfide.
  • Suitable hydrogen sulfide-generate bacteria include, but are not limited to: Proteus spp. (e.g., Proteus vulgaris, Proteus mirabilis, Proteus penneri, etc. ) , Klebsiella pneumoniae, Staphylococcus aureus, and combinations thereof.
  • the malodor-generating composition may comprise a sulfur-containing organic compound, as nutrient for the hydrogen sulfide-generating bacteria.
  • Suitable sulfur-containing organic compounds can be selected from the group consisting of sodium thiosulfate, cysteine, selenocysteine, methionine, and combinations or derivatives thereof.
  • the demonstration apparatus of the present invention can further comprise an additional treatment substrate and an additional indicator substrate also capable of generating a visual change upon exposure to the one or more fluid, and the method of the present invention may further comprise the steps of:
  • step (e) subsequent to step (e) , exposing the additional indicator substrate to the additional treatment substrate for the predetermined duration;
  • steps (c) and (f) are carried out simultaneously in two separate, closed chambers. In this manner, simultaneous comparison between the consume product and the reference/comparative product is provided.
  • the present invention may also relate to a demonstration apparatus comprising:
  • a malodor-generating composition capable of generating one or more volatile compound characterized by a humanly perceivable malodor
  • an indicator substrate capable of generating a visual change upon exposure to said one or more fluid.
  • Such demonstration apparatus may further comprise: d) an additional treatment substrate; and e) an additional indicator substrate also capable of generating a visual change upon exposure to such one or more fluid.
  • the present invention relates to a method for visually demonstrating the malodor control benefit of a laundry detergent product, comprising the steps of:
  • a) providing a laundry detergent product and a demonstration apparatus while such demonstration apparatus comprises: (1) a fabric substrate; (2) a malodor-generating composition capable of generating hydrogen sulfide; and (3) a garment-shaped indicator substrate containing lead acetate;
  • step (b) exposing the garment-shaped indicator substrate to the fabric substrate in a closed chamber for a predetermined duration;
  • a reference or comparative laundry detergent product is also provided, while the demonstration apparatus further comprises an additional fabric substrate and an additional garment-shaped indicator substrate containing lead acetate.
  • the above-described method may further comprise the steps of:
  • step (e) subsequent to step (e) and preferably simultaneously with step (c) , exposing the additional garment-shaped indicator substrate to the additional fabric substrate in a separate, closed chamber for the predetermined duration;
  • the present invention relates to a demonstration apparatus comprising:
  • such demonstration apparatus further comprises:
  • FIG. 1A is an illustrative view of a demonstration apparatus according to one embodiment of the present invention, prior to any visual change in its indicator substrate;
  • FIG. 1B is an illustrative view of the demonstration apparatus of FIG. 1A, after its indicator substrate has undergone a visual change in presence of a malodor fluid.
  • FIG. 2A is an illustrative view of another demonstration apparatus that contains two treatment substrates and two indicator substrates according to another embodiment of the present invention, prior to any visual change in either of its indicator substrates.
  • FIG. 2B is an illustrative view of the demonstration apparatus of FIG. 2A, after one of its indicator substrates has undergone a visual change in presence of a malodor fluid, while the other indicator substrate remains visually unchanged.
  • closed chamber means a substantially air-tight enclosure or space.
  • the present invention provides a method for visually demonstrating the malodor control benefit of a consumer product.
  • the term “consumer product” means a product that is sold or marketed to consumers through an ordinary channel of commerce.
  • the consumer product is a cleaning composition that can be used for cleaning a person, an animal, or a household object, such as a laundry detergent product, a dish washing detergent product, a hard surfactant cleaning product, a personal cleansing product, and combinations thereof. More preferably, the consumer product is a detergent composition or formulation designed for cleaning a soiled material.
  • Such detergent composition may include but is not limited to, laundry cleaning compositions and detergents, fabric softening compositions, fabric enhancing compositions, fabric freshening compositions, laundry prewash, laundry pretreat, laundry additives, spray products, dry cleaning agent or composition, laundry rinse additive, wash additive, post-rinse fabric treatment, ironing aid, dish washing compositions, hard surface cleaning compositions, unit dose formulation, delayed delivery formulation, detergent contained on or in a porous substrate or nonwoven sheet, and other suitable forms that may be apparent to one skilled in the art in view of the teachings herein.
  • Such detergent compositions may be used as a pre-laundering treatment, a post-laundering treatment, or may be added during the rinse or wash cycle of the laundering operation.
  • the cleaning compositions may have a form selected from liquid, powder, single-phase or multi-phase unit dose, pouch, tablet, gel, paste, bar, or flake.
  • the consumer product is a fabric treatment composition, more preferably a laundry detergent composition.
  • the first step of the present invention is to provide a demonstration apparatus, while includes: (1) a treatment substrate; (2) a malodor-generating composition capable of generating one or more volatile compound characterized by a humanly perceivable malodor; and (3) an indicator substrate capable of generating a visual change upon exposure to such one or more fluid.
  • the treatment substrate can be made of any material suitable for treatment by the consumer product, e.g., paper, plastic, fabric, and the like.
  • the consumer product is a fabric treatment product or preferably a laundry detergent composition
  • the treatment substrate is a fabric that can be treated by the fabric treatment product, preferably a laundry item that can be treated by the laundry detergent composition.
  • the volatile compound characterized by a humanly perceivable malodor may be either a gas or a solid or liquid capable of evaporation at ambient temperature and pressure.
  • it is a gas, such as ammonia, mercaptan or hydrogen sulfide.
  • the malodor compound is hydrogen sulfide.
  • the malodor-generating composition may contain any bacterial species capable of generating the malodor fluid.
  • the bacteria species can be selected from any sulfur-reducing bacteria, such as Proteus, Klebsiella, Staphylococcus, Campylobacter, Pseudomonas, Salmonella, Desulfuromonas, and the like.
  • the bacteria are selected from the group consisting of Proteus spp. (e.g., Proteus vulgaris, Proteus mirabilis, Proteus penneri, etc. ) , Klebsiella pneumoniae, Staphylococcus aureus, and combinations thereof.
  • the malodor-generating composition further comprises a sulfur-containing organic compound that functions as a nutrient and a sulfur source for the sulfur-reducing bacteria described hereinabove.
  • the sulfur-containing organic compound may be selected from the group consisting of sodium thiosulfate, cysteine, selenocysteine, methionine, and combinations or derivatives thereof.
  • derivatives as used herein includes, but is not limited to, polypeptides and/or proteins containing cysteine, selenocysteine, methionine and combinations thereof.
  • the sulfur-containing organic compound can be provided as a mixture with the sulfur-reducing bacteria (i.e., the malodor-generating composition is a unitary composition) , but it can also be provided separately from the sulfur-reducing bacteria and applied to the treatment substrate separately (i.e., the malodor-generating composition contains two distinctive portions that can be applied separately) .
  • the specific amounts of sulfur-reducing bacteria and the sulfur-containing organic compound in the malodor-generating composition can be readily determined based on the type and amount of the treatment substrate.
  • the treatment substrate is a piece of fabric that is about 10cm x 10cm in size
  • the malodor-generating composition can be provided as 100 ⁇ L of an aqueous solution containing 10 wt%of cysteine with a bacteria level of about 10 -4 to 10 -6 cfu/ml.
  • the indicator substrate contains a reactive material that can exhibit a visual change upon exposure to the malodor compound.
  • the indicator substrate may contain lead acetate that will react with the hydrogen sulfide to exhibit a color change, i.e., from a lighter color to a significantly darker color.
  • the reactive material can be incorporated into the indicator substrate in any suitable manner. For example, it can be first dissolved in water or an organic solvent to form an aqueous or non-aqueous solution, which is then applied to at least one surface of the indicator substrate and subsequently dried to form a coating of such reactive material.
  • a paste form of such reactive material can be directly applied to at least one surface of the indicator substrate by a suitable coating or printing technique.
  • a powder or granular form of such reactive material can be either attached onto at least one surface of the indicator substrate by an adhesive material, or impregnated into the indicator substrate by laser bombardment.
  • the react material is lead acetate, which is provided as an aqueous solution containing from about 5 wt%to about 10 wt%of lead acetate and applied to the indicator substrate by either soaking or spraying.
  • the indicator substrate itself can be made of any material suitable for treatment by the consumer product, e.g., paper, plastic, fabric, and the like.
  • the indicator substrate is shaped as the household item or object to be treated.
  • the consumer product in issue is a laundry detergent product
  • the household item or object to be treated thereby is likely a laundry item such as a garment. It is therefore desirable to shape the indicator substrate into a garment-like shape, e.g., a T-shirt, a dress, a pair of pants or shorts, etc., or a towel-like shape.
  • Such shapes of the indicator substrate are particularly important for helping the consumer to establish an intuitive connection between the visual change observed (i.e., lead acetate turning dark in the presence of hydrogen sulfide) and the benefit associated with the consumer product (i.e., fabric malodor control) .
  • the consumer product and the malodor-generating composition are applied to the treatment substrate, either simultaneously or sequentially.
  • the treatment substrate is first treated by the consumer product, and then the malodor-generating composition that contains both the sulfur-reducing bacteria and the sulfur-containing organic compound is applied to the treatment substrate.
  • the sulfur-reducing bacteria portion of the malodor-generating composition is first applied to the treatment substrate, which is then treated by the consumer product, followed by application of the sulfur-containing organic compound portion of the malodor-generating composition.
  • the treatment substrate is treated by the consumer product, while at the same time malodor-generating composition that contains both the sulfur-reducing bacteria and the sulfur-containing organic compound is applied to the treatment substrate.
  • the indicator substrate containing the reactive material as described hereinabove is exposed to the treatment substrate, preferably in a closed chamber, for a predetermined duration, which is sufficiently long to allow the reactive material in the indicator substrate to fully react with any malodor compound generated by the malodor-generating composition.
  • temperature within the closed chamber is adjusted to a level that is suitable for bacterial growth, e.g., from about 20°C to about 40°C, preferably from about 35°C to about 37°C.
  • the predetermined duration may range from about 4 hours to about 48 hours, preferably from about 6 hours to about 24 hours, more preferably from about 8 hours to about 12 hours.
  • the indicator substrate will then exhibit a visible change, which indicates that the consumer product is ineffective or not effective enough to control malodor.
  • the indicator substrate does not exhibit any visible change, it means that the malodor-generating composition is not able to generate sufficient malodor compound after the treatment substrate has been treated by the consumer product, which indicates that the consumer product is effective in controlling malodor.
  • Such visual change may occur instantaneously, or it may occur gradually over an extended duration, e.g., from about 4 hours to about 48 hours, preferably from about 6 hours to about 24 hours, more preferably from about 8 hours to about 12 hours.
  • a video-recorder or a camera it is also desirable to use a video-recorder or a camera to record such visual change over time, and the recording can then be compressed into a video of no more than 30 seconds in duration, or it can be extracted into a plurality of pictures of no more than 5 in number, each showing a stage of the visual change at a specific time point.
  • FIG. 1B is an illustrative view of a demonstration apparatus 10, according to one embodiment of the present invention.
  • the demonstration apparatus 10 contains a fabric substrate 12 and a T-shirt-shaped indicator substrate 14, which can be made by either paper or fabric.
  • the fabric substrate 12 has been first treated with a laundry detergent product, a fabric enhancer product or a fabric refresher product (not shown) , and then a malodor-generating composition (not shown) containing both Klebsiella pneumoniae bacteria and L-cysteine is applied to the fabric substrate 12.
  • the T-shirt-shaped indicator substrate 14 is applied with a coating of lead acetate (not shown) .
  • both the fabric substrate 12 and the T-shirt-shaped indicator substrate 14 are placed inside a closed chamber 18, with the T-shirt-shaped indicator substrate 14 being position above the fabric substrate 12.
  • FIG. 1B shows the demonstration apparatus 10 of FIG. 1A, after the fabric substrate 12 and the T-shirt-shaped indicator substrate 14 have been placed inside the closed chamber 18 for an extended period, e.g., 8 or 12 hours, which is sufficient for the Klebsiella pneumoniae bacteria in the fabric substrate 12 to break down the L-cysteine nutrient to generate hydrogen sulfide gas, i.e., the malodor compound or “MF” as indicated by the dotted lines, which in turn reacts with the lead acetate coating on the T-shirt-shaped indicator substrate 14.
  • an extended period e.g. 8 or 12 hours
  • the T-shirt-shaped indicator substrate 14 has undergone a visible color change, i.e., it turns into a darker color due to reaction between the hydrogen sulfide gas and lead acetate.
  • This color change is an indication that the laundry detergent product, the fabric enhancer product or the fabric refresher product used for treating the fabric substrate 12 has not been effective in suppressing/preventing growth of the Klebsiella pneumoniae bacteria and controlling generation of the hydrogen sulfide gas.
  • a consumer upon seeing such color change, can intuitively grasp the concept that the laundry detergent product, the fabric enhancer product or the fabric refresher product used for treating the fabric substrate 12 is ineffective in controlling malodor generation.
  • FIG. 2A is an illustrative view of another demonstration apparatus 20, according to another embodiment of the present invention.
  • the demonstration apparatus 20 contains two fabric substrates 22 and 32, and two T-shirt-shaped indicator substrates 24 and 34.
  • the first fabric substrate 22 has been first treated with a laundry detergent product, a fabric enhancer product or a fabric refresher product (not shown) , and then a malodor-generating composition (not shown) containing both Klebsiella pneumoniae bacteria and L-cysteine is applied to the first fabric substrate 22.
  • the second fabric substrate 32 has been first treated with a reference or comparative product (not shown) , and then the same malodor-generating composition (not shown) containing both Klebsiella pneumoniae bacteria and L-cysteine is applied to the second fabric substrate 32.
  • both T-shirt-shaped indicator substrates 24 and 34 have been applied with lead acetate (not shown) .
  • first fabric substrate 22 and the first T-shirt-shaped indicator substrate 24 are placed inside a first closed chamber 28 on the left side, with the first T-shirt-shaped indicator substrate 24 being position above the first fabric substrate 22.
  • second fabric substrate 32 and the second T-shirt-shaped indicator substrate 34 are placed inside a second closed chamber 38 on the right side, with the second T-shirt-shaped indicator substrate 34 being position above the second fabric substrate 32.
  • FIG. 2B shows the demonstration apparatus 20 of FIG. 1A, after both fabric substrates 22, 24 and both T-shirt-shaped indicator substrates 24, 34 have been placed inside the closed chambers 28 and 38 for an extended period, e.g., 8 or 12 hours.
  • the Klebsiella pneumoniae bacteria in the first fabric substrate 22, which has been treated by the laundry detergent composition, have not been able to grow significantly to break down the L-cysteine nutrient and to generate enough hydrogen sulfide gas to turn the lead acetate on the first T-shirt-shaped indicator substrate 24 into a darker color.
  • This absence of color change in the first T-shirt-shaped indicator substrate 24 is an indication that the laundry detergent product, the fabric enhancer product or the fabric refresher product used for treating the first fabric substrate 22 has been effective in suppressing/preventing growth of the Klebsiella pneumoniae bacteria and controlling generation of the hydrogen sulfide gas.
  • the Klebsiella pneumoniae bacteria in the second fabric substrate 32 which has been treated by the reference or comparative product, have been able to grow significantly to break down the L-cysteine nutrient and to generate enough hydrogen sulfide gas, i.e., the malodor compound or “MF” as indicated by the dotted lines, to react with the lead acetate on the second T-shirt-shaped indicator substrate 34.
  • the second T-shirt-shaped indicator substrate 34 has undergone a visible color change, i.e., it turns into a darker color due to reaction between the hydrogen sulfide gas and lead acetate.
  • This color change is an indication that the reference or comparative product used for treating the second fabric substrate 32 has not been effective in suppressing/preventing growth of the Klebsiella pneumoniae bacteria and controlling generation of the hydrogen sulfide gas.
  • a consumer upon seeing such side-by-side comparison, can intuitively grasp the concept that the laundry detergent product, the fabric enhancer product or the fabric refresher product used for treating the first fabric substrate 22 on the left side is effective in controlling malodor generation, while the reference/comparative product used for treating the second fabric substrate 32 on the right side is ineffective in controlling malodor generation.

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  • Life Sciences & Earth Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • Biophysics (AREA)
  • Molecular Biology (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Chemical Or Physical Treatment Of Fibers (AREA)
  • Disinfection, Sterilisation Or Deodorisation Of Air (AREA)
  • Detergent Compositions (AREA)
  • Investigating Or Analyzing Non-Biological Materials By The Use Of Chemical Means (AREA)

Abstract

La présente invention concerne un procédé de démonstration visuelle des atouts de lutte contre les mauvaises odeurs d'un produit de consommation au moyen d'un appareil de démonstration qui comprend un substrat de traitement, une composition générant des mauvaises odeurs et un substrat témoin. Le procédé selon l'invention consiste d'abord à appliquer le produit de consommation et la composition générant des mauvaises odeurs au substrat de traitement, puis à exposer le substrat témoin au substrat de traitement pendant une durée prédéfinie. L'absence de changement visuel dans le substrat témoin démontre les atouts de lutte contre les mauvaises odeurs du produit de consommation.
PCT/CN2017/104708 2017-09-30 2017-09-30 Procédé et appareil de démonstration visuelle des atouts de lutte contre les mauvaises odeurs de produits de consommation WO2019061375A1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
JP2020517545A JP2020535418A (ja) 2017-09-30 2017-09-30 消費者製品の悪臭制御効果を視覚的に実証するための方法及び装置
CN201780095982.9A CN111213055A (zh) 2017-09-30 2017-09-30 用于消费产品的恶臭控制有益效果的视觉展示的方法和设备
PCT/CN2017/104708 WO2019061375A1 (fr) 2017-09-30 2017-09-30 Procédé et appareil de démonstration visuelle des atouts de lutte contre les mauvaises odeurs de produits de consommation

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PCT/CN2017/104708 WO2019061375A1 (fr) 2017-09-30 2017-09-30 Procédé et appareil de démonstration visuelle des atouts de lutte contre les mauvaises odeurs de produits de consommation

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WO2019061375A1 true WO2019061375A1 (fr) 2019-04-04

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Citations (7)

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US4174202A (en) * 1977-11-28 1979-11-13 The Dow Chemical Company Kit and method for testing liquids for hydrogen sulfide content
WO1997005482A1 (fr) * 1995-07-31 1997-02-13 The Oralife Group, Inc. Procede colorimetrique de detection de composes a base de thiol ou de mercaptan, et son utilisation pour la determination de la mauvaise haleine
US6322750B1 (en) * 1998-12-30 2001-11-27 Robert L. Kimbell Gas detector indicator strip providing enhanced dynamic range
US20040044299A1 (en) * 2002-08-27 2004-03-04 Ryuichi Utsugi Adhesive dressing
WO2005086806A2 (fr) * 2004-03-09 2005-09-22 The Procter & Gamble Company Procede publicitaire
US20150376550A1 (en) * 2014-06-30 2015-12-31 The Procter & Gamble Company Laundry detergent composition
WO2016120165A1 (fr) * 2015-01-26 2016-08-04 Novozymes A/S Dosage, procédé, dispositif et nécessaire permettant de détecter des composés odorants

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EP0483428A1 (fr) * 1990-11-01 1992-05-06 The Procter & Gamble Company Composition déodorante et méthode de désodorisation à l'aide de composés disulfures
JPH08211048A (ja) * 1995-02-02 1996-08-20 Matsushita Electric Ind Co Ltd 健康測定装置
JP4567780B2 (ja) * 2008-11-06 2010-10-20 グンゼ株式会社 消臭効果確認方法
KR20140142282A (ko) * 2012-04-10 2014-12-11 더 프록터 앤드 갬블 캄파니 악취 감소 조성물
EP2764776A1 (fr) * 2013-02-07 2014-08-13 Thonhauser GmbH Détection de salissures de surfaces
EP3197509A1 (fr) * 2014-09-26 2017-08-02 The Procter & Gamble Company Procédé de fabrication d'articles parfumés
CN106561475A (zh) * 2015-10-13 2017-04-19 重庆蹇家坪农业科技发展有限公司 基于物联网控制的蛋鸭生长房

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4174202A (en) * 1977-11-28 1979-11-13 The Dow Chemical Company Kit and method for testing liquids for hydrogen sulfide content
WO1997005482A1 (fr) * 1995-07-31 1997-02-13 The Oralife Group, Inc. Procede colorimetrique de detection de composes a base de thiol ou de mercaptan, et son utilisation pour la determination de la mauvaise haleine
US6322750B1 (en) * 1998-12-30 2001-11-27 Robert L. Kimbell Gas detector indicator strip providing enhanced dynamic range
US20040044299A1 (en) * 2002-08-27 2004-03-04 Ryuichi Utsugi Adhesive dressing
WO2005086806A2 (fr) * 2004-03-09 2005-09-22 The Procter & Gamble Company Procede publicitaire
US20150376550A1 (en) * 2014-06-30 2015-12-31 The Procter & Gamble Company Laundry detergent composition
WO2016120165A1 (fr) * 2015-01-26 2016-08-04 Novozymes A/S Dosage, procédé, dispositif et nécessaire permettant de détecter des composés odorants

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CN111213055A (zh) 2020-05-29

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