JP2007176856A - Composition for oral cavity - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To obtain a composition for oral cavity, which contains an organic acid or its salt, effectively masks an odd taste derived from the organic acid or it salt and controls bitterness of mint-based spice while providing a user with a strong mint feeling and a refreshing feeling. <P>SOLUTION: The composition for oral cavity comprises (1) a hydroxycarboxylic acid or its salt component, (2) a spice composition containing a spice (a) of menthol, a spice (b) of one or more selected from N-ethyl-p-menthane-3-carboxamide, 2-isopropyl-N, 2,3-trimethylbutyramide, menthone glycerol ketal, menthyl lactate, methoxypropane-1,2-diol, isopulegol and p-menthane-3,8-diol and a spice (c) of a 1-5C fatty acid ester component and (3) a polyphosphoric acid or its salt. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to oral compositions such as mouthwashes and dentifrices.

  In order to enhance palatability for oral compositions, or mask masking of base odors and base-related tastes contained in oral compositions, it is generally a refreshing component such as peppermint oil, spearmint oil, menthol, etc. Mint flavors are used. In particular, when an organic acid or a salt thereof having an action to prevent or remove tooth coloring is blended in an oral composition, it is required to more effectively mask strong salty taste or acidity due to the organic acid or salt thereof. It is done. However, when a large amount of mint flavor is added to the oral composition, the mint feeling and the refreshing feeling are improved and the masking power is improved. On the other hand, the user of the oral composition has a bitter taste or oral cavity during or after use. There was a problem that pain could be felt and the feeling of use was impaired.

  In order to solve such a problem and effectively mask the base odor and the off-flavor derived from the base, a fragrance having a mint note and a fragrance having a citrus note and / or a fragrance having a fruit note are used in combination. (Patent Document 1). However, in the refreshing type oral composition having a strong mint feeling and a refreshing feeling, the sweetness derived from citrus notes and fruit notes tends to be avoided, and in these types of oral compositions, A fragrance having a citrus note or a fruit note cannot be added in an amount sufficient for masking. Furthermore, in an oral composition having a very strong salty taste or sour taste in which polyphosphoric acid or a salt thereof is blended in addition to an organic acid or a salt thereof, the effect is insufficient.

  Therefore, in addition to an organic acid or a salt thereof, a composition for oral cavity having a very strong salty or sour taste, in which polyphosphoric acid or a salt thereof is blended, in particular, a highly refreshing type oral cavity having a strong mint feeling and a refreshing feeling. The present condition is that there is no method for effectively masking the off-flavor derived from the base in the composition for use.

JP 2004-18431 A

  The present invention contains an organic acid or a salt thereof and a polyphosphoric acid or a salt thereof, effectively masks off-flavors derived therefrom, and gives a strong mint feeling and a refreshing feeling to the user while adding a large amount of a mint flavor. It aims at providing the composition for oral cavity which suppressed the bitterness produced when mix | blending and the pain in an oral cavity.

  As a result of earnest research on a technique for improving the mint feeling and the refreshing feeling by masking the off-flavor derived from the base without increasing the amount of the mint-based fragrance, the present inventor has found one or more of the following fragrances (b) in menthol. It has been found that the above object can be achieved by combining selected perfumes and esters of lower fatty acids.

  The present invention provides an oral composition containing the following component (1), component (2), component (3) and water.

Component (1): Hydroxycarboxylic acid or salt thereof Component (2): Fragrance composition containing fragrances (a), (b) and (c) Fragrance (a): menthol Fragrance (b): N-ethyl-p -Mentan-3-carboxamide, 2-isopropyl-N, 2,3-trimethylbutyramide, menthone glycerol ketal, menthyl lactate, menthoxypropane-1,2-diol, isopulegol and p-menthane-3,8-diol 1 or more perfume (c): C1-C5 fatty acid ester component (3): Polyphosphoric acid or salt thereof

  The composition for oral cavity of the present invention effectively masks off-flavors derived from an organic acid or a salt thereof, gives a strong mint feeling and a refreshing feeling to the user, and suppresses bitterness caused by mint-based fragrances.

[Component (1): Hydroxycarboxylic acid or salt thereof]
Component (1) is used for the purpose of preventing tooth coloring and the like. Examples of component (1) include malic acid, tartaric acid, and salts thereof. Examples of the salt include salts of alkali metals such as sodium and potassium; salts of alkaline earth metals such as magnesium and calcium. Among these, malic acid or a sodium salt or potassium salt thereof is preferable from the viewpoints of performance and stability.

  The content of the component (1) is preferably 0.05 to 5% by mass, more preferably 0.1 to 2% by mass, and particularly preferably 0.1 to 1% by mass in the oral composition of the present invention as a hydroxycarboxylic acid equivalent.

[Component (2): Fragrance composition]
The fragrance composition used in the present invention contains the fragrances (a), (b) and (c).

  You may mix | blend as mint type fragrance | flavor containing this as menthol of a fragrance | flavor (a). Examples of the mint-based fragrance containing such menthol include peppermint oil and peppermint oil.

  The menthol content of the fragrance (a) is preferably 10 to 50% by mass, particularly 25 to 30% by mass in the fragrance composition of the component (2). In the oral composition of the present invention, the fragrance (a) / The mass ratio of component (1) is preferably 0.05 to 0.25, particularly preferably 0.20 to 0.25, from the viewpoint of the balance between the masking power and the menthol-derived bitterness.

  As the fragrance (b), isopulegol and menthyl lactate are preferable, and isopulegol is more preferable from the viewpoint of the effect on the mint feeling and the refreshing feeling and the small taste that increases with the increase in the blending amount. The content of the fragrance (b) is preferably 5 to 50% by mass, particularly 10 to 25% by mass in the fragrance composition of the component (2). The mass ratio of the fragrance (b) / fragrance (a) is preferably 0.01 to 0.1, particularly preferably 0.01 to 0.04, from the viewpoint of flavor balance.

  As the ester of fatty acid having 1 to 5 carbon atoms of perfume (c), acetate ester, propionic acid ester and butyric acid ester are preferable, and esters obtained from these fatty acids and aliphatic alcohols having 1 to 6 carbon atoms are preferable. Specific examples include methyl acetate, ethyl acetate, propyl acetate, butyl acetate, amyl acetate, hexyl acetate, butyl propionate, methyl butyrate, ethyl butyrate, propyl butyrate, butyl butyrate, amyl butyrate, hexyl butyrate and the like. Among these, propyl ester is preferable and propyl acetate is more preferable from the viewpoint of odor intensity and compatibility with mint-based fragrances. The mass ratio of the fragrance (c) / fragrance (a) is preferably 0.01 to 0.1, more preferably 0.01 to 0.04, and particularly preferably 0.01 to 0.02, from the viewpoint of flavor balance.

  In addition to the fragrances (a), (b) and (c), the fragrance composition of component (2) includes spearmint, anethole, cinnamon, birch, anise, eucalyptus, methyl salicylate, lemon, lime, orange, grapefruit, etc. Perfumes and solvents such as ethanol and propylene glycol can be added.

  The content of the fragrance composition of component (2) is preferably 0.1 to 1% by mass, more preferably 0.1 to 0.5% by mass, and particularly preferably 0.3 to 0.5% by mass in the oral composition of the present invention.

[Component (3): Polyphosphoric acid or salt thereof]
Component (3) is used for the purpose of preventing tooth coloring and the like. Polyphosphates include linear pyrophosphates such as sodium pyrophosphate, potassium pyrophosphate, sodium tripolyphosphate, potassium tripolyphosphate, sodium tetrapolyphosphate, potassium tetrapolyphosphate, sodium metaphosphate, sodium trimetaphosphate, trimetaline Cyclic polyphosphates such as potassium acid, sodium tetrametaphosphate, potassium tetrametaphosphate, sodium hexametaphosphate and potassium hexametaphosphate are used. These polyphosphoric acid or a salt thereof, may be used that alone or in combination of two or more. Among these, linear polyphosphates are preferable, and those having a polymerization degree of 2 to 4 are particularly preferable.

  The content of the component (3) is preferably 0.05 to 2% by mass, more preferably 0.1 to 1% by mass, and particularly preferably 0.1 to 0.5% by mass with respect to the entire oral composition.

[Oral composition]
The oral composition of the present invention must contain water in addition to components (1) and (2), and preferably contains a surfactant. The surfactant is not particularly limited as long as it is used for an oral composition, but an anionic surfactant and a nonionic surfactant are preferable.

  Anionic surfactants include alkyl sulfate salts such as sodium lauryl sulfate and sodium myristyl sulfate; N-acyl amino acid salts such as sodium lauroyl sarcosine; acyl taurine salts such as sodium lauroyl methyl taurine; sodium coconut oil fatty acid ethyl ester sodium sulfonate And fatty acid ester sulfonates such as salts. Of these, alkyl sulfate salts such as sodium lauryl sulfate and sodium myristyl sulfate and acyl taurine salts such as sodium lauroylmethyl taurate are preferred from the viewpoint of irritation and aftertaste.

  These anionic surfactants can be used alone or in combination of two or more, and the content thereof is preferably 0.001 to 1% by mass in the oral cavity composition of the present invention from the viewpoint of stability and irritation. Further, 0.001 to 0.5 mass%, particularly 0.001 to 0.2 mass% is preferable.

  Nonionic surfactants include polyoxyethylene hydrogenated castor oil, sucrose fatty acid ester, sorbitan fatty acid ester, glycerin fatty acid ester, polyglycerin fatty acid ester, polyoxyethylene sorbitan fatty acid ester, polyoxyethylene sorbit fatty acid ester, polyoxyethylene Fatty acid esters such as glycerin fatty acid ester and polyethylene glycol fatty acid ester, polyoxyethylene phytosterol, polyoxyethylene phytostanol, polyoxyethylene lanolin, polyoxyethylene lanolin alcohol, polyoxyethylene alkylamine, polyoxyethylene fatty acid amide, polyoxy Ethylene alkyl phenyl formaldehyde condensate, polyoxyethylene alkyl ether, polyoxyethylene Emissions polyoxypropylene alkyl ethers, polyoxyethylene polyoxypropylene copolymers, polyoxyethylene alkyl phenyl ethers, polyoxyethylene fatty acid ethanol amides. Among these, fatty acid esters having about 8 to 20 carbon atoms in the fatty acid are preferable from the viewpoint of aftertaste.

  These nonionic surfactants can be used alone or in combination of two or more thereof, and the content thereof is 0.001 to 0.5% by mass in the oral composition of the present invention in terms of stability and aftertaste. In particular, 0.001 to 0.2% by mass is preferable.

  The oral composition of the present invention preferably contains ethanol. The ethanol content is preferably (2) 0.1 to 30% by mass, more preferably 1 to 20% by mass, and particularly preferably 3 to 15% by mass of the composition for oral cavity in combination with the amount of the fragrance composition.

  In the composition for oral cavity of the present invention, in addition to these components, wetting agents such as sorbit, glycerin, ethylene glycol, propylene glycol, 1,3-butylene glycol, polyethylene glycol, polypropylene glycol, xylit, carboxymethylcellulose sodium Further, thickeners such as carrageenan, xanthan gum and sodium alginate, preservatives such as methyl paraoxybenzoate, bactericides such as benzethonium chloride, isopropylmethylphenol and triclosan, anti-inflammatory agents and the like can be added.

  As a form of the composition for oral cavity of this invention, a mouthwash, a liquid dentifrice, etc. are mentioned.

  The pH of the oral composition of the present invention is preferably 5 to 8, particularly 5.5 to 7.5, from the viewpoint of stability of the composition and reduction of irritation.

(I) Preparation of Fragrance Composition As a fragrance composition to be blended in the oral composition, mint type fragrance compositions 1 to 12 were blended using the fragrance components shown in Table 1.

(Ii) Preparation of composition for oral cavity Using the fragrance composition shown in Table 1, the mouthwash shown in Table 2 was prepared according to a conventional method.

(Iii) Evaluation A specialized panelist rinses the mouthwashes of Examples 1 to 12 and Comparative Examples 1 and 2 according to a conventional method, and feels when using the mouthwash (coolness, volume of mint, bitterness) The taste of organic acids was evaluated according to the following criteria. The results are shown in Table 2.

・ Evaluation criteria for mint volume and coolness 1: Strong 2: Slightly strong 3: Slightly weak 4: Slightly weak

・ Evaluation criteria for bitterness and organic acid taste 1: Not concerned 2: Slightly concerned 3: Worried

Claims (4)

An oral composition containing the following component (1), component (2), component (3) and water.
Component (1): Hydroxycarboxylic acid or salt thereof Component (2): Fragrance composition containing fragrances (a), (b) and (c) Fragrance (a): menthol Fragrance (b): N-ethyl-p -Mentan-3-carboxamide, 2-isopropyl-N, 2,3-trimethylbutyramide, menthone glycerol ketal, menthyl lactate, menthoxypropane-1,2-diol, isopulegol and p-menthane-3,8-diol 1 or more perfume (c): C1-C5 fatty acid ester component (3): Polyphosphoric acid or salt thereof   The composition for oral cavity according to claim 1, wherein a mass ratio of the fragrance (a) / component (1) is 0.05 to 0.25.   The composition for oral cavity according to claim 1 or 2, wherein a mass ratio of the fragrance (b) / fragrance (a) is 0.01 to 0.1.   The composition for oral cavity according to any one of claims 1 to 3, wherein a mass ratio of the fragrance (c) / fragrance (a) is 0.01 to 0.1.