JP5125146B2 - Oral solution - Google Patents

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JP5125146B2
JP5125146B2 JP2007045635A JP2007045635A JP5125146B2 JP 5125146 B2 JP5125146 B2 JP 5125146B2 JP 2007045635 A JP2007045635 A JP 2007045635A JP 2007045635 A JP2007045635 A JP 2007045635A JP 5125146 B2 JP5125146 B2 JP 5125146B2
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acid
thioctic
polyphenols
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acids
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JP2007262054A (en
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隆史 堂本
拓人 武井
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Taisho Pharmaceutical Co Ltd
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本発明は、チオクト酸類とビタミンB2類を配合してなる内服液剤に関する。さらに詳しくは、チオクト酸類とビタミンB2類を配合した内服液剤に、ポリフェノール類を同時に配合することによって、チオクト酸類の光安定性を改善させた内服液剤に関し、医薬、食品の分野に応用できるものである。   The present invention relates to an internal liquid preparation containing thioctic acids and vitamin B2. More specifically, the present invention relates to an internal liquid preparation in which the photostability of thioctic acids is improved by simultaneously mixing polyphenols with an internal liquid preparation containing thioctic acids and vitamin B2 and can be applied to the fields of medicine and food. is there.

チオクト酸(別名:α−リポ酸)は、ミトコンドリア内においてグルコースを出発物質とする一連のエネルギー産生経路において、補酵素として働く。チオクト酸の生理作用としては、代謝系において糖のエネルギー消費を促進する作用を有する。また、チオクト酸は抗酸化能を有していることから、酸化されたビタミンC、E等を再生する作用や、白内障、糖尿病の改善にもある程度の効果を発揮することが報告されている。   Thioctic acid (also known as α-lipoic acid) acts as a coenzyme in a series of energy production pathways starting from glucose in the mitochondria. The physiological action of thioctic acid has an action of promoting energy consumption of sugars in the metabolic system. Moreover, since thioctic acid has an antioxidant ability, it has been reported that it exhibits a certain effect in the action of regenerating oxidized vitamins C, E, etc., and in the improvement of cataracts and diabetes.

近年ではチオクト酸を含有した化粧品や医薬品等が検討されている(特許文献1,2参照)。例えば特許文献1には、チオクト酸、ジヒドロリポ酸、その代謝物並びにチオクト酸の光学異性体、及び少なくとも一種の塩を、所定量含有させた医薬品が開示されている。これによって、鎮痛作用、抗炎症作用、抗糖尿病作用、免疫刺激作用等を改善させることが可能となる。   In recent years, cosmetics and pharmaceuticals containing thioctic acid have been studied (see Patent Documents 1 and 2). For example, Patent Document 1 discloses a pharmaceutical product containing a predetermined amount of thioctic acid, dihydrolipoic acid, a metabolite thereof, an optical isomer of thioctic acid, and at least one salt. This makes it possible to improve analgesic action, anti-inflammatory action, anti-diabetic action, immune stimulating action, and the like.

また、特許文献2には、チオクト酸、生理学的に許容されるその誘導体又は塩、及び式(I):HC−(CHn1−(CH=CH)n3−(CHn2−COOH(式中、n1、n2は互いに独立して3〜9の整数の値を有し、n3は2〜6の整数の値を有し、炭素原子数は18、20又は22である)で表される化合物を単一又は組み合わせて糖尿病治療のために使用する方法が開示されている。これによって糖尿病の進行を改善することが可能である。
特開平6−135832号公報 特表2004−508399号公報
Patent Document 2 also discloses thioctic acid, physiologically acceptable derivatives or salts thereof, and formula (I): H 3 C— (CH 2 ) n1 — (CH═CH) n3 — (CH 2 ) n2 -COOH (wherein n1 and n2 each independently have an integer value of 3 to 9, n3 has an integer value of 2 to 6 and the number of carbon atoms is 18, 20 or 22) A method of using a compound represented by formula (1) or a combination thereof for the treatment of diabetes is disclosed. This can improve the progression of diabetes.
Japanese Patent Laid-Open No. 6-135832 JP-T-2004-508399

しかしながら、チオクト酸は水溶液中において不安定であり、酸化分解や光分解が起こりやすいことが知られている。また、ビタミンB2類を同時に配合した際には、曝光時にビタミンB2類から生じるラジカルとチオクト酸類が反応することがChemPhys Chem.,vol5 Issue1,(2004)に報告されている。   However, it is known that thioctic acid is unstable in an aqueous solution and easily undergoes oxidative degradation and photolysis. Further, when vitamin B2s are blended at the same time, the reaction of radicals generated from vitamin B2s and thioctic acids upon exposure to light is described in ChemPhys Chem. , Vol5 Issue 1, (2004).

特許文献1に開示されている医薬品や食品添加剤は、カプセルや錠剤であり、気軽に摂取することができる飲料や食品ではない。   The pharmaceuticals and food additives disclosed in Patent Document 1 are capsules and tablets, and are not drinks or foods that can be easily ingested.

以上の課題に鑑み、本発明では、ビタミンB2類を配合した際の、チオクト酸類の光安定性を改善し、安定化したチオクト酸が添加された内服液剤を提供することにある。   In view of the above problems, an object of the present invention is to provide a liquid preparation to which the photostability of thioctic acids is improved when vitamin B2 is blended, and to which stabilized thioctic acid is added.

上記課題を解決するために、本発明者らは鋭意検討を重ねた結果、チオクト酸及びビタミンB2類を配合した液剤に、ポリフェノール類を配合することにより、チオクト酸の光安定性が改善されることを見出し、本発明を完成させた。   In order to solve the above-mentioned problems, the present inventors have conducted intensive studies. As a result, the photostability of thioctic acid is improved by adding polyphenols to a solution containing thioctic acid and vitamin B2. As a result, the present invention has been completed.

即ち本発明は、チオクト酸類及びビタミンB2類及びポリフェノール類を配合してなる内服液剤を提供する。   That is, the present invention provides an internal liquid preparation comprising thioctic acids, vitamin B2 and polyphenols.

本発明によれば、ポリフェノール類を配合したことにより、ビタミンB2類配合時におけるチオクト酸類の光安定性が改善された内服液剤を提供することが可能になった。   According to the present invention, by blending polyphenols, it has become possible to provide an internal solution with improved light stability of thioctic acids when blended with vitamin B2.

以下、本発明について詳細に説明する。   Hereinafter, the present invention will be described in detail.

本発明に使用する「チオクト酸類」には、チオクト酸及びその誘導体、それらの薬理学的に許容できる塩が含まれる。なお、本発明に使用するチオクト酸類の配合量は、適宜選択して使用でき、チオクト酸に換算して、1日当たり0.5mgから300mgが好ましく、1mgから200mgであることが更に好ましく、5mgから100mgであることが最も好ましい。例えば100mLに換算すると0.0005質量%から0.3質量%(W/V%)であり、0.001質量%から0.2質量%であることがより好ましく、0.05質量%から0.1質量%であることが最も好ましい。   The “thioctic acids” used in the present invention include thioctic acid and derivatives thereof, and pharmacologically acceptable salts thereof. In addition, the compounding quantity of the thioctic acid used for this invention can be used selecting it suitably, 0.5 to 300 mg per day is preferable when converted into thioctic acid, It is more preferable that it is 1 to 200 mg, 5 to Most preferably, it is 100 mg. For example, in terms of 100 mL, it is 0.0005 mass% to 0.3 mass% (W / V%), more preferably 0.001 mass% to 0.2 mass%, and 0.05 mass% to 0 mass%. Most preferably, it is 1 mass%.

本発明に使用する「ポリフェノール類」とは、分子内に複数のフェノール性水酸基を持つ成分のことをいう。ポリフェノール類は、構造の違いからフラボン、フラボノール、フラバノン、イソフラボン、フラバノール、カルコン、アントシアニン等に分類される。その他に没食子酸、クロロゲン酸、アントシアニン等もポリフェノール類に含まれ、更には比較的分子量が大きく分子内水酸基の多いタンニン等や、フラバノール(カテキン)が重合したプロアントシアニジンも含まれる。   The “polyphenol” used in the present invention refers to a component having a plurality of phenolic hydroxyl groups in the molecule. Polyphenols are classified into flavones, flavonols, flavanones, isoflavones, flavanols, chalcones, anthocyanins and the like based on differences in structure. In addition, gallic acid, chlorogenic acid, anthocyanin and the like are also included in the polyphenols, and tannin having a relatively large molecular weight and a large number of intramolecular hydroxyl groups, and proanthocyanidins in which flavanol (catechin) is polymerized are also included.

このようなポリフェノール類の中でも特に、没食子酸、プロアントシアニジン、フラバノール、フラボノール、フラボン、クロロゲン酸、アントシアニン、及びそれらの誘導体を用いることが好ましい。なお、これらのポリフェノール類としては、合成品だけでなく、果実や種子等の抽出物、及びこれらをすり潰した果汁等も使用することができる。   Among these polyphenols, gallic acid, proanthocyanidins, flavanols, flavonols, flavones, chlorogenic acids, anthocyanins, and derivatives thereof are preferably used. In addition, as these polyphenols, not only a synthetic product but extracts, such as a fruit and a seed, and fruit juice etc. which ground these, etc. can be used.

このような抽出物及び果汁としては、バラ科、アカバナ科、ツバキ科、スグリ科、シソ科、アカネ科、アオギリ科、タデ科に属する植物の抽出物及び/又は果汁が好ましい。ここで、バラ科の主な代表例としては、リンゴ、ナシ、モモ、イチゴ等が、ツバキ科としては茶が、アカバナ科としては月見草、マツヨイグサ等が、スグリ科としてはアカスグリ、シロスグリ、カシス、グーズベリーが、シソ科としてはシソ、ハッカ、マンネロウ、メボウキ等が、アカネ科としてはコーヒー、クチナシ等が、アオギリ科としてはカカオ、コーラ等が、タデ科としてはソバ、ダイオウ等が挙げられる。   As such an extract and fruit juice, an extract and / or fruit juice of a plant belonging to the family Rosaceae, Rubiaceae, Camelliae, Currantaceae, Lamiaceae, Rubiaceae, Aogiriaceae, Romaceae is preferred. Here, as major representative examples of the Rosaceae, apples, pears, peaches, strawberries, etc., tea as the camelliaceae, evening primroses, evening primroses, etc. For gooseberries, for example, perilla, perilla, mannnerou, burdock, etc., as for Rubiaceae, coffee, gardenia, etc., for cabbage, cacao, cola, etc., and for buckwheat, buckwheat, persian, etc.

このような植物の抽出物及び/又は果汁由来のポリフェノール類の主な代表例としては、リンゴポリフェノール類、月見草ポリフェノール類、カシスポリフェノール類、茶ポリフェノール類、シソポリフェノール類、カカオポリフェノール類、ソバポリフェノール類、コーヒーポリフェノール類等が挙げられる。   Major representative examples of such plant extracts and / or fruit juice-derived polyphenols include apple polyphenols, evening primrose polyphenols, cassis polyphenols, tea polyphenols, perilla polyphenols, cacao polyphenols, buckwheat polyphenols And coffee polyphenols.

本発明に使用するビタミンB2類とは、通常可食性のものをいう。具体的にはリボフラビン、リン酸リボフラビン、酪酸リボフラビン、及びそれらの塩等が挙げられる。本発明において、配合することができるビタミンB2類の配合量は、栄養摂取量の面からリボフラビンに換算して、1日当たり0.1mgから100mgであり、0.5mgから50mgであることが更に好ましく、1mgから30mgであることが最も好ましい。また、この配合量は、例えば100mlに換算すると、内服液剤全体の0.0001質量%(W/V%)から0.1質量%(W/V%)であり0.0005質量%から0.05質量%であることがより好ましく、0.001質量%から0.03質量%が最も好ましい。   Vitamin B2s used in the present invention are usually edible. Specific examples include riboflavin, riboflavin phosphate, riboflavin butyrate, and salts thereof. In the present invention, the amount of vitamin B2 that can be blended is 0.1 mg to 100 mg per day in terms of nutrient intake, more preferably 0.5 mg to 50 mg in terms of riboflavin. Most preferably from 1 mg to 30 mg. Moreover, this compounding quantity is 0.0001 mass% (W / V%) to 0.1 mass% (W / V%) of the whole internal use liquid agent, for example when converted into 100 ml, and 0.0005 mass% to 0.00. It is more preferably 05% by mass, and most preferably 0.001% by mass to 0.03% by mass.

本発明に係る内服液剤において、チオクト酸類とポリフェノール類の配合比は、チオクト酸類1重量部に対して通常0.0002質量部から10000質量部であり、好ましくは0.001質量部から5000質量部であり、より好ましくは0.01質量部から1000質量部である。   In the internal use liquid preparation according to the present invention, the blending ratio of thioctic acids and polyphenols is usually 0.0002 parts by mass to 10,000 parts by mass, preferably 0.001 parts by mass to 5000 parts by mass with respect to 1 part by mass of thioctic acids. More preferably, it is 0.01 to 1000 parts by mass.

本発明に係る内服液剤のpHは、2.5から7.0であり、好ましくは2.5から5.5である。pH2.5未満の酸性域では酸味が強すぎて服用性の点で好ましくなく、pHが7.0を越える塩基性域では、チオクト酸の酸化安定性が著しく低下してしまうためである。したがって、本発明の内服液剤のpHを上記範囲に保つために、必要に応じてpH調整剤を配合してもよい。pH調整剤としては、クエン酸、リンゴ酸、フマル酸、酒石酸、乳酸、コハク酸等の有機酸及びそれらの塩類、塩酸等の無機酸、水酸化ナトリウム等の無機塩基等が挙げられる。   The pH of the internal solution according to the present invention is from 2.5 to 7.0, preferably from 2.5 to 5.5. This is because acidity is too strong in the acidic range below pH 2.5, which is not preferable from the standpoint of ingestion, and in the basic range where pH exceeds 7.0, the oxidation stability of thioctic acid is significantly reduced. Therefore, in order to keep the pH of the internal liquid preparation of the present invention in the above range, a pH adjuster may be blended as necessary. Examples of the pH adjuster include organic acids such as citric acid, malic acid, fumaric acid, tartaric acid, lactic acid, and succinic acid, salts thereof, inorganic acids such as hydrochloric acid, and inorganic bases such as sodium hydroxide.

本発明の内服液剤にはその他の成分として、ビタミン類、他のミネラル類、アミノ酸及びその塩類、生薬、生薬抽出物、カフェイン、ローヤルゼリー等を本発明の効果を損なわない範囲で適宜に配合することができる。   As internal components of the present invention, vitamins, other minerals, amino acids and salts thereof, herbal medicines, herbal extracts, caffeine, royal jelly and the like are appropriately blended as long as the effects of the present invention are not impaired. be able to.

さらに必要に応じて、抗酸化剤、着色剤、香料、矯味剤、界面活性剤、溶解補助剤、保存剤、甘味料等の添加物を本発明の効果を損なわない範囲で適宜に配合することができる。   Furthermore, if necessary, additives such as antioxidants, colorants, fragrances, flavoring agents, surfactants, solubilizers, preservatives, sweeteners and the like are appropriately blended within a range not impairing the effects of the present invention. Can do.

なお、飲料中で、上記のチオクト酸類が十分な効果を奏するために酸化防止剤、香料、各種エステル類、有機酸類、有機酸塩類、無機酸類、無機酸塩類、無機塩類、色素類、乳化剤、保存料、調味料、甘味料、酸味料、果汁エキス類、野菜エキス類、花蜜エキス類、pH調整剤、品質安定剤等の添加剤を単独、あるいは併用して配合しても良い。   In beverages, in order for the thioctic acids to have a sufficient effect, antioxidants, fragrances, various esters, organic acids, organic acid salts, inorganic acids, inorganic acid salts, inorganic salts, pigments, emulsifiers, Additives such as preservatives, seasonings, sweeteners, acidulants, fruit juice extracts, vegetable extracts, nectar extracts, pH adjusters, and quality stabilizers may be used alone or in combination.

例えば甘味料としては、砂糖、ぶどう糖、果糖、異性化液糖、グリチルリチン、ステビア、アスパルテーム、フラクトオリゴ糖、ガラクトオリゴ糖等が挙げられる。酸味料としては、天然成分から抽出した果汁類のほか、クエン酸、酒石酸、リンゴ酸、乳酸、フマル酸、リン酸が挙げられる。クエン酸もしくはリンゴ酸を飲料中に0.1g/Lから5g/L含有することが好ましい。また、酸化防止剤としては、L−アスコルビン酸、L−アスコルビン酸ナトリウム、エリソルビン酸、エリソルビン酸ナトリウム、が挙げられる。   Examples of sweeteners include sugar, glucose, fructose, isomerized liquid sugar, glycyrrhizin, stevia, aspartame, fructooligosaccharide, and galactooligosaccharide. Examples of acidulants include fruit juices extracted from natural ingredients, citric acid, tartaric acid, malic acid, lactic acid, fumaric acid, and phosphoric acid. It is preferable to contain 0.1 g / L to 5 g / L of citric acid or malic acid in the beverage. Examples of the antioxidant include L-ascorbic acid, sodium L-ascorbate, erythorbic acid, and sodium erythorbate.

本発明に係る内服液剤は、常法により調製することができ、その方法は特に限定されるものではない。通常、各成分を採り、適量の精製水で溶解した後、pHを調整し、残りの精製水を加えて容量調製し、必要に応じてろ過、滅菌処理することにより得られる。   The internal liquid preparation according to the present invention can be prepared by a conventional method, and the method is not particularly limited. Usually, each component is taken and dissolved in an appropriate amount of purified water, then the pH is adjusted, the remaining purified water is added to adjust the volume, and filtration and sterilization are performed as necessary.

本発明に係る内服液剤は、例えばシロップ剤、ドリンク剤等の医薬品や医薬部外品等の各種製剤、健康飲料等の各種飲料に適用することができる。   The internal liquid preparation according to the present invention can be applied to various preparations such as pharmaceuticals such as syrups and drinks, quasi-drugs, and various beverages such as health drinks.

飲料に使用する容器は、医薬品や医薬部外品等の各種製剤、健康飲料等の各種飲料に使用される小瓶や、ポリエチレンテレフタレートを主成分とする成形容器(いわゆるPETボトル)、金属缶、金属箔やプラスチックフィルムと複合された紙容器、瓶等の通常の形態で提供することができる。   Containers used for beverages include various preparations such as pharmaceuticals and quasi-drugs, small bottles used for various beverages such as health drinks, molded containers mainly composed of polyethylene terephthalate (so-called PET bottles), metal cans, metal It can be provided in a normal form such as a paper container or a bottle combined with a foil or a plastic film.

また、上記の内服液剤は例えば、瓶に充填後、加熱殺菌できる場合にあっては食品衛生法に定められた所定の殺菌条件で製造される。PETボトル、紙容器のようにレトルト殺菌できないものについては、あらかじめ上記と同等の殺菌条件、例えばプレート式熱交換器等で高温短時間殺菌後、一定の温度まで冷却して、容器に充填する等の方法が採用される。また無菌下で、充填された容器に別の成分を配合して充填してもよい。さらに、酸性下で加熱殺菌後、無菌下でpHを中性に戻すことや、中性下で加熱殺菌後、無菌下でpHを酸性に戻す等の操作も可能である。   In addition, for example, when the above-mentioned internal liquid preparation can be heated and sterilized after filling into a bottle, it is produced under predetermined sterilization conditions defined in the Food Sanitation Law. For those that cannot be sterilized by retort, such as PET bottles and paper containers, sterilize under the same conditions as above, for example, sterilize at high temperature and short time in a plate heat exchanger, etc., cool to a certain temperature, and fill the container. The method is adopted. Moreover, you may mix | blend another component with the filled container under aseptic conditions. Furthermore, after sterilization by heating under acidic conditions, the pH may be returned to neutrality under aseptic conditions, or after sterilization by heating under neutral conditions, the pH may be returned to acidic conditions under aseptic conditions.

[実施例1〜、比較例1〜3、参考例1〜
チオクト酸の光安定性試験の検討を行なった。まず、下記の表1に記載の配合割合でチオクト酸飲料(実施例1から実施例、比較例1から3、参考例1から)を製造した。なお、これらの試料は、茶褐色ガラス瓶に充填後キャップを施した。
ここで、表1に記載の「抽出物」とは、各植物から公知の方法で抽出したものをいう。本実施例では、市販品の抽出物を用いた。以下に各抽出物のポリフェノール含量を示す。
緑茶抽出物:約90%
リンゴ抽出物:約50%
大豆抽出物:約10%
ソバ抽出物:約80%
シソ抽出物:約30%
カカオ抽出物:約20%
カシス抽出物:約10%
大豆抽出物:約10%
ブドウ種子抽出物:約30%

Figure 0005125146
[Examples 1-2 , Comparative Examples 1-3, Reference Examples 1-6 ]
The photostability test of thioctic acid was examined. First, thioctic acid beverages (Example 1 to Example 2 , Comparative Examples 1 to 3, Reference Examples 1 to 6 ) were produced at the blending ratios shown in Table 1 below. These samples were capped after being filled into a brown glass bottle.
Here, the “extract” described in Table 1 refers to an extract extracted from each plant by a known method. In this example, a commercially available extract was used. The polyphenol content of each extract is shown below.
Green tea extract: about 90%
Apple extract: about 50%
Soy extract: about 10%
Buckwheat extract: about 80%
Perilla extract: about 30%
Cocoa extract: about 20%
Cassis extract: about 10%
Soy extract: about 10%
Grape seed extract: about 30%
Figure 0005125146

これらの試料の光安定性は、以下の試験方法に従い実施した。   The light stability of these samples was carried out according to the following test method.

実施例、参考例及び比較例の各試料を、D65光安定性試験機にて30万ルクスで曝光させた。これらの試料中のチオクト酸含有量を、液体クロマトグラフ法(カラム:ODS−80TS(東ソー)、移動相:水:メタノール:酢酸=50:50:1、流速:1mL/min、検出波長:333nm)により定量し、比較例1を100としたときのチオクト酸分解率を算出した。 Each sample of Examples , Reference Examples and Comparative Examples was exposed at 300,000 lux with a D65 light stability tester. The thioctic acid content in these samples was measured by liquid chromatography (column: ODS-80TS (Tosoh), mobile phase: water: methanol: acetic acid = 50: 50: 1, flow rate: 1 mL / min, detection wavelength: 333 nm. ), And the thioctic acid decomposition rate when the comparative example 1 was set to 100 was calculated.

調製直後のチオクト酸含有量に対する、30万ルクスで曝光後のチオクト酸分解率(%)を表2及び表3に示す。これらの表から明らかなように、実施例1及び2は、比較例1から3と比べ、チオクト酸の光安定性が改善されていた。なお、実施例1及び比較例1については2回試験を行った。この結果からポリフェノール類を配合することによりビタミンB2類同時配合時のチオクト酸類の光安定性を改善できることが明らかとなった。

Figure 0005125146
Figure 0005125146
Tables 2 and 3 show the thioctic acid decomposition rate (%) after exposure at 300,000 lux with respect to the thioctic acid content immediately after preparation. As is clear from these tables, Examples 1 and 2 have improved photostability of thioctic acid compared to Comparative Examples 1 to 3. In addition, about Example 1 and Comparative Example 1, the test was done twice. From this result, it became clear that the photostability of thioctic acids during the simultaneous blending of vitamin B2 can be improved by blending polyphenols.
Figure 0005125146
Figure 0005125146

[実施例
下記の表4に記載の成分を、精製水に溶解させた後、pHを3.0に調整して、精製水を加えて全量を100mLとした。この液をろ紙でろ過し、滅菌装置を用いて、ろ液を80℃で25分間加熱滅菌した後、ガラス瓶に充填しキャップを施して内服液剤を得た。

Figure 0005125146
[Example 3 ]
The components listed in Table 4 below were dissolved in purified water, the pH was adjusted to 3.0, and purified water was added to make the total volume 100 mL. This solution was filtered with a filter paper, and the filtrate was sterilized by heating at 80 ° C. for 25 minutes using a sterilizer, and then filled into a glass bottle and capped to obtain an internal solution.
Figure 0005125146

参考例7
下記の表5に記載の成分を、精製水に溶解した後、pHを4.0に調整し、精製水を加えて全量を100mLとした。この液をろ紙でろ過し、滅菌装置を用いて、ろ液を80℃で25分間加熱滅菌した後、ガラス瓶に充填しキャップを施して内服液剤を得た。

Figure 0005125146
[ Reference Example 7 ]
The components described in Table 5 below were dissolved in purified water, the pH was adjusted to 4.0, and purified water was added to make up a total volume of 100 mL. This solution was filtered with a filter paper, and the filtrate was sterilized by heating at 80 ° C. for 25 minutes using a sterilizer, and then filled into a glass bottle and capped to obtain an internal solution.
Figure 0005125146

参考例8
下記の表6に記載の成分を、精製水に溶解した後、pHを3.0に調整し、精製水を加えて全量を100mLとした。この液をろ紙でろ過し、滅菌装置を用いて、ろ液を80℃で25分間加熱滅菌した後、ガラス瓶に充填しキャップを施して内服液剤を得た。

Figure 0005125146
[ Reference Example 8 ]
After the components described in Table 6 below were dissolved in purified water, the pH was adjusted to 3.0, and purified water was added to make up a total volume of 100 mL. This solution was filtered with a filter paper, and the filtrate was sterilized by heating at 80 ° C. for 25 minutes using a sterilizer, and then filled into a glass bottle and capped to obtain an internal solution.
Figure 0005125146

実施例1、2と同様の方法で、上記の実施例に係る内服液剤の光安定性を検討したところ、チオクト酸の光安定性が改善されていた。 When the light stability of the oral solution according to Example 3 was examined in the same manner as in Examples 1 and 2 , the light stability of thioctic acid was improved.

Claims (3)

(a)チオクト酸と、(b)リボフラビン又はリン酸リボフラビン若しくはそのナトリウム塩と、(c)没食子酸プロピルとを含む内服液剤。 An internal solution containing (a) thioctic acid, (b) riboflavin or riboflavin phosphate or a sodium salt thereof, and (c) propyl gallate. (a)チオクト酸と、(b)リボフラビン又はリン酸リボフラビン若しくはそのナトリウム塩と、(c)カシスポリフェノール類を含む内服液剤。 (A) thioctic acid, (b) and riboflavin or riboflavin phosphate or its sodium salt, oral liquid preparation comprising (c) a cassis polyphenols. pHが2.5から7.0である請求項1又は2に記載の内服液剤。   The internal solution according to claim 1 or 2, wherein the pH is 2.5 to 7.0.
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