JP3793781B2 - Drugs using plant tar - Google Patents
Drugs using plant tar Download PDFInfo
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- JP3793781B2 JP3793781B2 JP2000161482A JP2000161482A JP3793781B2 JP 3793781 B2 JP3793781 B2 JP 3793781B2 JP 2000161482 A JP2000161482 A JP 2000161482A JP 2000161482 A JP2000161482 A JP 2000161482A JP 3793781 B2 JP3793781 B2 JP 3793781B2
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- wood
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- wood vinegar
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- 239000000052 vinegar Substances 0.000 claims description 37
- 235000021419 vinegar Nutrition 0.000 claims description 37
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- Disinfection, Sterilisation Or Deodorisation Of Air (AREA)
- Agricultural Chemicals And Associated Chemicals (AREA)
- Catching Or Destruction (AREA)
Description
【0001】
【発明の属する技術分野】
この発明は、植物・木材材料を炭化した際に得られる植物タールの利用法として、該植物タールを圧力20〜30mmHg、温度30〜150 ℃の範囲で精製して得た木酢油を殺菌剤、防虫、脱臭剤或いは抗菌剤等の薬剤として使用するものに関する。
【0002】
【従来の技術】
日常の生活環境中には蝿や蚊といった種々の不快害虫が存在したり、多種類の細菌が繁殖したり、又は様々な臭いが存在している。蝿や蚊の防虫剤あるいは殺虫剤としては化学合成した薬剤をスプレータイプにして用いたり、殺菌剤も化学合成したものが主流を占めているが、これら化学薬剤は環境汚染が心配される物質である。又悪臭物質としては、アンモニア、アミン等の窒素化合物、或いは硫化水素、メチルメルカプタン、ジメチルサルファイト等の硫黄化合物等が知られている。現在、これらに対する悪臭対策としては、マスキング法、化学反応法、吸着法等がある。マスキング法とは、悪臭よりも強い芳香を出して悪臭を感じさせなくするという方法である。化学反応法とは、例えば悪臭が酸性臭であればアルカリ液等を悪臭源に散布し化学反応により中性にすることによりその臭いを除去する方法である。吸着法とは活性炭等の吸着剤を用いて悪臭物質を吸着する方法である。
【0003】
悪臭物質が特定できしかもその悪臭物質が少種類である場合には、上記の方法等から悪臭物質に対し好適な方法を選ぶことができるため有効に作用する。しかしながら、悪臭物質が特定できない場合或いは悪臭物質が多種類存在する場合には好適な方法を選ぶことができない。またどのような臭いに対しても対応できる脱臭法や脱臭剤は従来存在しなかった。
【0004】
また、一般に生活空間には種々雑多な細菌が存在する。この細菌等に対し、従来一般家庭やオフィス等では清掃を強化する等の対策が採られていたが、多大な労力を必要とする割に有効な手段ではない。病院等医療に関わる場所や食堂等食料品を扱う場所、保育園等教育の場所等のように、細菌に対し特に注意する必要がある場所ではクレゾールやメチルアルコール等強力な殺菌剤により効果的な殺菌が行われている。しかしこれら強力な殺菌剤により殺菌をすると特異な異臭が残り、殺菌済の部屋を使用する人に不快感を与えていた。
【0005】
従来、殺菌剤、防虫剤、脱臭剤或いは殺菌剤として使用されているものの多くは化学合成法によって得られる化学薬剤である。これらの化学薬剤はそれぞれの目的の機能に対して強力に作用する反面、副作用が生じることも知られている。そこで副作用の少ない又はない薬剤として天然に存在する物質より殺菌剤、防虫剤及び脱臭剤等の機能を有する薬剤について種々検討されている。天然に存在する物質より採取した薬剤として木材の乾留により得られるクレオソートがある。
クレオソートは、図1に示すように、次のようなプロセスによって得られる。即ち、木材を乾留して得られる液体生成物を静置すると、上層の多量の酢酸を含む液体(木酢液)と下層の黒褐色の粘ちょうな液体(木タール)とに分離し、この木タールを蒸留すると油層(木酢油)と水層とに分離する。油層(木酢油)を更に分留し200℃〜230℃の留分を採取したものがクレオソートである。クレオソートはグアヤコール及び4−メチルグアヤコール(クレゾール)を主成分(50〜80%)とし、その他、約10種類のフェノールから構成され、主として腸内の防腐剤、細菌剤とし、そのほか殺菌、局所麻酔作用があるため虫歯の処理などに使用されている。しかし、該物質は上述のように多くのプロセスを経るため収量は少なく高価であった。
また、石炭を乾留して得たタール成分を分留し170℃〜230℃の中油、230℃〜70℃の重油及び270℃〜360℃のアントラセン等の総称としてクレオソート又はクレオソート油がある。これはフェノール、クレゾール、α−ナフトール、アンタラセン、ナフタリン等200種の成分を含有し主として木材の防腐剤、塗料、漁網染料などに使用され、その効力は優れているが、発ガン性物質のベンツピレンを含む等の問題がある。
【0006】
【発明が解決しようとする課題】
本発明は天然に存在する物質より安価に採取でき、かつ、自然界に悪影響をもたらさない安全な薬剤について種々検討した結果、植物タールから蒸留して得た木酢油自体が殺菌剤、防虫剤及び脱臭剤等の薬剤として有効に作用するとの知見を得、本発明を完成したもので、本発明の目的は天然の植物・木材の乾留により得られる植物タールを原料とした木酢油を薬剤として使用するものである。
【0007】
【課題を解決するための手段】
本発明の要旨は、植物・木材を炭化した際に残留する植物タールを圧力20〜30mmHg、温度30〜150 ℃の範囲で精製して得た木酢油を薬剤として使用することを特徴とする植物タールを用いた薬剤であり、この薬剤としては殺菌剤、防虫剤、脱臭剤等を包含する。
【0008】
【発明の実施の形態】
以下、本発明について詳細に述べる。
本発明において原料として使用する植物タールは、針葉樹、広葉樹等の木材、マダケ、ハチク、マチク、セキチク、チョウシチク、タイザンチク、モウソウチク、イマダケ、ホティチク、シチク、リョクチク、トウチク等の竹、わら、糠、果実、草花等の植物系材料を乾留し、その後木酢液を除去した残渣として得られるものであるが、木材を乾留して得られたものが特に好ましい。木材を常法によって炭化する。炭化した際に発生したガス成分を冷却して得られた液状成分は木タールと木酢液とからなり、アルデヒド、ケトン、炭化水素、有機酸及びフェノール類からなる複雑な有機混合物である。本発明ではこの木タールを精製する。精製手段としては減圧蒸留を行う。減圧蒸留としては、圧力20〜30mmHg、温度30〜150 ℃の範囲、好ましくは約30mmHgで約130℃で行なう。
減圧蒸留の結果、木酢油(油相)と水(水相)との2相に分離して得られる。木酢油は酸性油と中性油との分かれるが、本発明ではこの両方を使用することが出来る。
【0009】
従来、木酢油は、通常これを分留してクレオソートとして利用されているが、本発明は木酢油をそのままの状態で使用するものである。本発明の木酢油とクレオソートの差異を図1のフローシートで示す。又、木酢油とクレオソートとの成分としての差異を図2のカスクロマトグラフによって示す。このガスクロマトグラフの各成分ピークの組成を表1に示した。
【0010】
【表1】
【0011】
表1より木酢油にはクレオソートに相当する成分が約76%近く含まれているが、図2に示されているように、木酢油はクレゾール以外の種々の成分が混入されているため、防腐のみならず、脱臭剤、防ばい剤、防虫剤抗菌の各作用を有する。
【0012】
製造例
青森ブナ材750kgを400〜500℃で炭化したとき、熱分解して木ガス90m3と水溶性の木酢液350kgが得られ、冷却槽の底に木タール50kgが得られた。この木タールを原料として使用した。
木タ−ル50kgを減圧蒸留装置で、加熱温度130℃、圧力30mmHgの条件下で抽出した結果、木酢油10kg、残滓としてピッチ25kg水分15kgであった。同様に木タール50kgを常圧蒸留によって抽出したところ2.5kgの木酢油が得られた。従って、蒸留条件の相違によるも木タールに対する木酢油の収量比を表1に示す。
このようにして得られた木タールの蒸留物のGC−MS分析結果を図2に示す。この図より本発明の植物タールの蒸留物にはクレオソートが30重量%含有しているがそれ以外に種々の成分が含有されている。
【0013】
【表2】
【0014】
本発明にかかる木酢油を薬剤として使用するに当たり、例えば天然または合成香料を添加して使用すると、殺菌性や防虫性、防ばい性等の機能を減ずることなく芳香を付与できるので好ましい。使用される天然または合成香料としては、レモングラス油、シトロネラ油、タイム油、スターアニス油、クローブ油等の天然精油、シトラール、シトロネラール、アネトール、アニスアルデヒド、n−オクチルアルデヒド、n−ノニルアルデヒド等の合成香料等が挙げられるが、これらに特に限定されない。
本発明の木酢油を脱臭剤及び殺菌剤として使用する方法について説明する。木酢油を液体の状態で容器に入れ、自然に或いは加熱等強制手段によって蒸発させ、これをにより、室内にこの脱臭剤及び殺菌剤の蒸気を漂わせてもよく、また悪臭源または殺菌を必要とする場所に直接散布してもよい。
また、木酢油の抗菌作用を利用し、これを含有した塗料は抗菌塗料として有効である。
【0015】
【実施例】
以下実施例を挙げて本発明を詳細に説明するが、本発明はこれらの実施例に限定されるものではない。ほお、部及び%は特にことわらない限り重量部及び重量%を表す。
実施例1
本発明の木タールの蒸留物である木酢油を脱臭剤として使用した例を示す。
脱臭剤を貯留する貯留部と、この貯留部に貯留された脱臭剤を蒸発させる蒸発手段と、蒸発した脱臭剤を送り出す送風手段を有する送風機によって本発明の木酢油を使用した脱臭剤を1m×1m×1mの立方体の透明アクリルボックス内に蒸散させ、この透明アクリルボックス内のトルエン、硫化水素を脱臭する脱臭試験を行った。この試験では送風機運転開始後、所定時間に透明アクリルボックス内のトルエン及び硫化水素の濃度を測定した。結果を表3に示す。
【0016】
【表3】
【0017】
実施例2
本発明にかかる木酢油を使用し、前記送風機を用いて部屋等を脱臭する脱臭試験を行った。この試験において悪臭源としてすりおろしニンニク、すりおろし玉ねぎ、キムチ、めざし、たこやき、煙草等を使用し、これらの臭気が試験室内にこもった状態で前記送風機を運転し、この試験室内にいる者が実験室内の臭気を評価した。評価は臭気強度、不快度の2点について行われ、臭気強度については臭気を感じない場合は1、微かに感じる場合は2、明らかに感じる場合は3、強く感じる場合は4、非常に強く感じる合は5、極端に感じる場合は6と評価し、不快度については快適の場合は1、微かに不快の場合は2、やや不快の場合は3、不快の場合は4、非常に不快の場合は5、極端に不快の場合は6と評価した。結果を表4に示す。
【0018】
【表4】
なお、表中( )内の数字は試験室の広さを表す
【0019】
実施例3
本発明の木酢油を殺菌剤として使用した場合の殺菌効果を以下に示す。この殺菌効果試験において使用した菌は、Salmonella typhimurium IFO12529(以下、サルモネラという)、Vibrioparahaemolyticus(以下、腸炎ビブリオという)、Stapylococcus aureus IFO12732(以下、黄色ブドウ球菌という)、Escherichia coli IFO3301(以下、大腸菌という)、Stapylococcus aureus IID1677(メチシリン耐性黄色ブドウ球菌、以下、MRSAと略す)である。ガラス板に上記の試験菌液0.1mlを塗布し、このガラス板に本発明の植物タールの蒸留物使用した殺菌剤を1ml滴下した。滴下から所定時間後にこのガラス板を滅菌ガーゼで拭き取り、腸炎ビブリオについては3%食塩水のSCDLブイヨン培地10mlで洗い出した。これら洗い出し液について、生菌数を生菌数測定用培地を用いた混釈平板培養法(35℃ 2日間)により測定し、ガラス板1枚当りに換算した。また対象試験としてガラス板に上記の試験菌液0.1mlを塗布し、所定時間後にこのガラス板を滅菌ガーゼで拭き取り、上記と同様の方法で生菌数を測定した。結果を表5に示す。
【0020】
【表5】
表中、−は測定しなかったことを意味する、又〇は菌が検出されなかったことを意味する。
【0021】
実施例4
本発明の木酢油を抗菌剤として使用した場合の抗菌作用を以下に示す。被検試料として木酢油含有シリコーン塗料で処理したカヤを使用し、被検菌株として建築土台より分離した木材より採取した腐朽菌を使用した。検査方法はポテトデキストロース寒天培地を用いたハロー法(25℃、7日間培養)によって行った。その結果、シリコーン塗料を塗布したカヤの環状の内側には明瞭な菌の発育阻止帯が認められ、これは環状内への抗菌物質の拡散が比較的発育阻止濃度に達したと認められた。以上の結果よりシリコーン塗料中の木酢油はシリコーンによって徐放性となっており、抗カビ硬化の持続性が期待できた。
【0022】
【発明の効果】
本発明では、木酢油を防臭剤及び殺菌剤として使用したところ優れた効果を発揮することが明らかとなった。従来、木タールとしては防腐剤、粘結剤、燃料等の用途しか無かったものを減圧蒸留等の精製手段を施し、木酢油とすることにより充分に天然物としての防臭剤及び殺菌剤として役立つことを見出したものである。
【図面の簡単な説明】
【図1】木酢油生成過程のフローシート図
【図2】木酢油とクレオソートのクロマトグラフィによる成分比較図[0001]
BACKGROUND OF THE INVENTION
As a method of using plant tar obtained when carbonizing a plant / wood material, the present invention uses the plant tar at a pressure of 20 to 30 mmHg and a temperature of 30 to 150. The present invention relates to the use of wood vinegar oil obtained by refining in the range of ° C. as a medicine such as a bactericide, insect repellent, deodorant or antibacterial agent.
[0002]
[Prior art]
In the daily living environment, various unpleasant pests such as moths and mosquitoes exist, various types of bacteria propagate, or various odors exist. Most of the insecticides and insecticides used for moths and mosquitoes are chemically synthesized chemicals that are spray-typed, and fungicides are also chemically synthesized. is there. As malodorous substances, nitrogen compounds such as ammonia and amines, or sulfur compounds such as hydrogen sulfide, methyl mercaptan, and dimethyl sulfite are known. Currently, there are masking method, chemical reaction method, adsorption method and the like as countermeasures against malodors. The masking method is a method in which an aroma stronger than a bad odor is emitted so that the bad odor is not felt. The chemical reaction method is a method in which, for example, if the malodor is an acidic odor, the odor is removed by spraying an alkaline solution or the like over the odor source and neutralizing it by a chemical reaction. The adsorption method is a method of adsorbing malodorous substances using an adsorbent such as activated carbon.
[0003]
When a malodorous substance can be identified and there are only a few kinds of malodorous substances, a suitable method can be selected for the malodorous substance from the above methods and the like, which is effective. However, when a malodorous substance cannot be specified or when there are many kinds of malodorous substances, a suitable method cannot be selected. Also, there has been no deodorizing method or deodorizing agent that can cope with any odor.
[0004]
In general, various kinds of bacteria exist in the living space. For such bacteria and the like, measures such as strengthening cleaning have been conventionally taken in ordinary homes and offices, but it is not an effective means for requiring much labor. Effective sterilization with powerful disinfectants such as cresol and methyl alcohol in places where special attention should be paid to bacteria, such as places related to medical treatment such as hospitals, food handling places such as cafeterias, and places such as education places such as nursery schools Has been done. However, when sterilized with these powerful disinfectants, a peculiar off-flavor remains, which is uncomfortable for those who use the sterilized room.
[0005]
Many of those conventionally used as bactericides, insect repellents, deodorants or bactericides are chemical agents obtained by chemical synthesis. These chemical agents are known to cause side effects while acting strongly on their intended functions. Therefore, various studies have been made on drugs having functions such as bactericides, insect repellents, and deodorizers from substances that exist naturally as drugs with little or no side effects. Creosote obtained by dry distillation of wood is a drug collected from naturally occurring substances.
As shown in FIG. 1, creosote is obtained by the following process. That is, when the liquid product obtained by dry distillation of wood is allowed to stand, it is separated into a liquid containing a large amount of acetic acid (wood vinegar) in the upper layer and a dark brown viscous liquid (wood tar) in the lower layer. Is distilled into an oil layer (wood vinegar oil) and an aqueous layer. A creosote is obtained by further fractionating an oil layer (wood vinegar oil) and collecting a fraction at 200 ° C to 230 ° C. Creosote is composed mainly of guaiacol and 4-methylguaiacol (cresol) (50-80%) and about 10 types of phenols. It is mainly used as an antiseptic and bacterial agent in the intestine, and in addition, sterilization and local anesthesia. Because of its action, it is used to treat caries. However, since the material is subjected to many processes as described above, the yield is small and expensive.
Moreover, there is creosote or creosote oil as a general term for fractional distillation of tar components obtained by dry distillation of coal and medium oil at 170 ° C to 230 ° C, heavy oil at 230 ° C to 70 ° C, anthracene at 270 ° C to 360 ° C, etc. . It contains 200 ingredients such as phenol, cresol, α-naphthol, anthracene, naphthalene, and is mainly used for wood preservatives, paints, fishnet dyes, etc. There are problems such as including.
[0006]
[Problems to be solved by the invention]
As a result of various studies on safe drugs that can be collected at a lower cost than naturally occurring substances and do not adversely affect the natural world, wood vinegar oil itself obtained by distillation from plant tar is a fungicide, insecticide and deodorant. The present invention has been completed by obtaining knowledge that it effectively acts as a medicine such as a medicine. The purpose of the present invention is to use wood vinegar oil made from plant tar obtained by dry distillation of natural plants and wood as a medicine. Is.
[0007]
[Means for Solving the Problems]
The gist of the present invention is that the plant tar remaining when carbonizing a plant / wood is pressure 20-30 mmHg, temperature 30-150. It is a drug using plant tar characterized by using wood vinegar oil obtained by refining in the range of ° C. as a drug, and this drug includes fungicides, insect repellents, deodorizers and the like.
[0008]
DETAILED DESCRIPTION OF THE INVENTION
The present invention will be described in detail below.
The plant tar used as a raw material in the present invention is wood such as conifers, broad-leaved trees, mushrooms, honeybees, gusuku, sekichiku, butterflies, taizanchi, mosouchiku, imatake, hotichiku, chichiku, ryokuchi, bamboo shoots, straw, strawberries, fruits These are obtained as a residue obtained by dry-distilling plant-based materials such as flowers and then removing the wood vinegar, and those obtained by dry-distilling wood are particularly preferred. Carbonize wood by conventional methods. The liquid component obtained by cooling the gas component generated during carbonization consists of wood tar and wood vinegar, and is a complex organic mixture consisting of aldehydes, ketones, hydrocarbons, organic acids and phenols. In the present invention, this wood tar is purified. Performing a reduced pressure distillation as a purification means. The vacuum distillation is performed at a pressure of 20 to 30 mmHg and a temperature of 30 to 150 ° C., preferably about 30 mmHg and about 130 ° C.
As a result of vacuum distillation, it is obtained by separating into two phases of wood vinegar oil (oil phase) and water (aqueous phase). Wood vinegar oil is divided into acidic oil and neutral oil, and both of them can be used in the present invention.
[0009]
Conventionally, wood vinegar oil is usually fractionally distilled and used as creosote, but the present invention uses wood vinegar oil as it is. The difference between the wood vinegar oil of the present invention and creosote is shown in the flow sheet of FIG. Moreover, the difference as a component of wood vinegar oil and creosote is shown by the cas chromatograph of FIG. The composition of each component peak of this gas chromatograph is shown in Table 1.
[0010]
[Table 1]
[0011]
From Table 1, wood vinegar oil contains nearly 76% of components corresponding to creosote, but as shown in FIG. 2, wood vinegar oil contains various components other than cresol, In addition to antiseptic, it has deodorant, deodorant, and insecticide antibacterial effects.
[0012]
Production Example When 750 kg of Aomori beech wood was carbonized at 400 to 500 ° C., it was pyrolyzed to obtain 90 m 3 of wood gas and 350 kg of water-soluble wood vinegar, and 50 kg of wood tar was obtained at the bottom of the cooling tank. This wood tar was used as a raw material.
As a result of extracting 50 kg of wood tar with a vacuum distillation apparatus under conditions of a heating temperature of 130 ° C. and a pressure of 30 mmHg, wood vinegar oil was 10 kg and the residue was a pitch of 25 kg and a moisture of 15 kg. Similarly, when 50 kg of wood tar was extracted by atmospheric distillation, 2.5 kg of wood vinegar oil was obtained. Therefore, Table 1 shows the yield ratio of wood vinegar oil to wood tar, depending on the distillation conditions.
The GC-MS analysis result of the wood tar distillate thus obtained is shown in FIG. From this figure, the plant tar distillate of the present invention contains 30% by weight of creosote, but also contains various other components.
[0013]
[Table 2]
[0014]
In using the wood vinegar oil according to the present invention as a medicine, it is preferable to add a natural or synthetic fragrance, for example, because aroma can be imparted without reducing functions such as bactericidal properties, insect repellent properties, and anti-rust properties. Natural or synthetic fragrances used include natural essential oils such as lemongrass oil, citronella oil, thyme oil, star anise oil, clove oil, citral, citronellal, anethole, anisaldehyde, n-octylaldehyde, n-nonylaldehyde, etc. However, it is not particularly limited to these.
A method for using the wood vinegar oil of the present invention as a deodorant and bactericide will be described. Wood vinegar oil is put in a container in a liquid state and evaporated naturally or by forced means such as heating, and this may cause the deodorizer and disinfectant vapor to float inside the room, and a source of malodor or sterilization is required. It may be sprayed directly on the place.
Moreover, the antibacterial action of wood vinegar oil is utilized, and the paint containing this is effective as an antibacterial paint.
[0015]
【Example】
EXAMPLES Hereinafter, the present invention will be described in detail with reference to examples, but the present invention is not limited to these examples. Unless otherwise specified, cheeks, parts and% represent parts by weight and% by weight.
Example 1
The example which uses the wood vinegar oil which is the distillate of the wood tar of this invention as a deodorizing agent is shown.
The deodorizer using the wood vinegar oil of the present invention is 1 mx by a blower having a storage unit for storing the deodorant, an evaporation unit for evaporating the deodorant stored in the storage unit, and a blowing unit for sending out the evaporated deodorant. A deodorization test was conducted by evaporating in a 1 m × 1 m cubic transparent acrylic box and deodorizing toluene and hydrogen sulfide in the transparent acrylic box. In this test, the concentration of toluene and hydrogen sulfide in the transparent acrylic box was measured at a predetermined time after the start of the fan operation. The results are shown in Table 3.
[0016]
[Table 3]
[0017]
Example 2
The deodorization test which deodorizes a room etc. using the said blower using the wood vinegar oil concerning this invention was done. In this test, grated garlic, grated onion, kimchi, aim, takoyaki, cigarette, etc. were used as sources of bad odor, and the blower was operated with these odors trapped in the test room. The laboratory odor was evaluated. The evaluation is made for two points: odor intensity and discomfort. The odor intensity is 1 if you do not feel odor, 2 if you feel slightly, 3 if you feel clearly, 4 if you feel strong, and very strong. 5 for an uncomfortable feeling, 6 for an uncomfortable feeling, 1 for a comfortable feeling, 2 for a slightly unpleasant feeling, 3 for a slightly unpleasant feeling, 4 for a discomfort, a very unpleasant feeling Was rated 5 and 6 for extreme discomfort. The results are shown in Table 4.
[0018]
[Table 4]
The numbers in parentheses in the table indicate the size of the test room. [0019]
Example 3
The bactericidal effect when the wood vinegar oil of the present invention is used as a bactericidal agent is shown below. Bacteria used in this bactericidal effect test are Salmonella typhimurium IFO12529 (hereinafter referred to as Salmonella), Vibrioparahaemolyticus (hereinafter referred to as Vibrio parahaemolyticus), Stapylococcus aureus IFO12732 (hereinafter referred to as Staphylococcus aureus), Escherichia coli IFO3301 (hereinafter referred to as Escherichia coli). Stapylococcus aureus IID1677 (methicillin-resistant Staphylococcus aureus, hereinafter abbreviated as MRSA). 0.1 ml of the above-mentioned test bacterial solution was applied to a glass plate, and 1 ml of a fungicide using the plant tar distillate of the present invention was dropped onto this glass plate. The glass plate was wiped with sterile gauze after a predetermined time from the dropping, and Vibrio parahaemolyticus was washed out with 10 ml of SCDL broth medium containing 3% saline. About these washing | cleaning liquids, the viable count was measured by the pour plate culture method (35
[0020]
[Table 5]
In the table,-means that measurement was not performed, and ◯ means that no bacteria were detected.
[0021]
Example 4
The antibacterial action when the wood vinegar oil of the present invention is used as an antibacterial agent is shown below. Kaya treated with a silicone paint containing wood vinegar oil was used as a test sample, and a rot fungus collected from wood separated from a building base was used as a test strain. The inspection method was performed by the halo method (25 ° C., 7 days culture) using a potato dextrose agar medium. As a result, a clear germ growth-inhibiting zone was observed on the inner side of the kaya ring coated with silicone paint, and it was recognized that the diffusion of antibacterial substances into the ring reached a relatively growth-inhibiting concentration. From the above results, the wood vinegar oil in the silicone paint was sustained-released by the silicone, and the anti-mold hardening could be expected.
[0022]
【The invention's effect】
In the present invention, it has been clarified that when wood vinegar oil is used as a deodorant and a bactericide, an excellent effect is exhibited. Conventionally, wood tar has been used only for preservatives, binders, fuels, etc., and is subjected to purification means such as vacuum distillation to make wood vinegar oil, which is useful as a deodorant and fungicide as a natural product. This is what we found.
[Brief description of the drawings]
[Fig. 1] Flow sheet diagram of the process of producing wood vinegar oil [Fig. 2] Comparison of components of wood vinegar oil and creosote by chromatography
Claims (1)
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| Application Number | Priority Date | Filing Date | Title |
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| JP2000161482A JP3793781B2 (en) | 2000-05-31 | 2000-05-31 | Drugs using plant tar |
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|---|---|---|---|
| JP2000161482A JP3793781B2 (en) | 2000-05-31 | 2000-05-31 | Drugs using plant tar |
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| JP5008183B2 (en) * | 2006-12-12 | 2012-08-22 | 清峰 谷口 | Wood coating composition and paint |
| KR101153883B1 (en) * | 2010-01-13 | 2012-06-27 | 대한민국 | Method for the control of citrus postharvest diseases by using pyroligneous liquor tar |
| JP7194957B2 (en) * | 2017-12-08 | 2022-12-23 | 陽子 岩宮 | Composite material containing base material and wood vinegar and organoalkoxysilane-based material |
| JP6598226B1 (en) * | 2019-03-29 | 2019-10-30 | 大幸薬品株式会社 | Acetylcholinesterase inhibitor |
| JP2023000935A (en) * | 2021-06-18 | 2023-01-04 | 陽子 岩宮 | Silane-based coating liquid composition |
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