JP2985003B1 - Production method of bamboo vinegar liquid - Google Patents
Production method of bamboo vinegar liquidInfo
- Publication number
- JP2985003B1 JP2985003B1 JP10334522A JP33452298A JP2985003B1 JP 2985003 B1 JP2985003 B1 JP 2985003B1 JP 10334522 A JP10334522 A JP 10334522A JP 33452298 A JP33452298 A JP 33452298A JP 2985003 B1 JP2985003 B1 JP 2985003B1
- Authority
- JP
- Japan
- Prior art keywords
- bamboo
- distillation
- solution
- bamboo vinegar
- distillate
- Prior art date
- Legal status (The legal status 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 status listed.)
- Expired - Fee Related
Links
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E50/00—Technologies for the production of fuel of non-fossil origin
- Y02E50/10—Biofuels, e.g. bio-diesel
Landscapes
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
【要約】
【課題】 竹乾留液含有物質から、食酢に適する高純度
の竹酢液、その他の成分を効率良く分離取得する。
【解決手段】 竹乾留液から蒸留により竹酢液を製造す
るに際し、あらかじめ竹乾留液のpHを9〜11のアル
カリ性に調整する。次いで、炭酸ガスによる曝気をpH
が6.5〜7の中性になるまで行い、疎水性タール分を
除去する。第一蒸留工程で、原液の約半分程度まで蒸留
濃縮して低沸点物を分留する。蒸留残液のpHを2.5
〜3の酸性に調整した後、さらに第二蒸留工程で乾固す
るまで蒸留する。かくして、酢酸を主成分とする竹酢液
留分と蒸留残渣を分離取得する。蒸留残渣は、必要に応
じてさらに有機溶媒を添加して、溶媒可溶分を抽出、回
収する。Abstract: PROBLEM TO BE SOLVED: To efficiently separate and obtain a high-purity bamboo vinegar solution suitable for vinegar and other components from a bamboo dry distillate-containing substance. SOLUTION: When producing a bamboo vinegar solution by distillation from a bamboo dry distillate, the pH of the bamboo dry distillate is adjusted to 9 to 11 alkalinity in advance. Next, aeration with carbon dioxide gas was performed to pH
Until 6.5 to 7 neutral to remove the hydrophobic tar content. In the first distillation step, low-boiling substances are fractionated by distilling and concentrating to about half of the stock solution. The pH of the distillation residue is 2.5
After adjusting the acidity to ~ 3, the mixture is further distilled in the second distillation step until it is dried. Thus, a bamboo vinegar fraction containing acetic acid as a main component and a distillation residue are separated and obtained. An organic solvent is further added to the distillation residue, if necessary, to extract and collect the solvent-soluble matter.
Description
【0001】[0001]
【発明の属する技術分野】本発明は、竹乾留液から蒸留
により分留して竹酢液を得る竹酢液の製造方法に関する
ものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for producing a bamboo vinegar solution by distilling a bamboo dry distillate to obtain a bamboo vinegar solution.
【0002】[0002]
【従来の技術】従来、竹乾留液を蒸留して、酢酸を主成
分とする竹酢液を得ることは広く慣用されている。しか
しながら、単純な蒸留では、竹酢液中の有機物の分離が
不十分であった。このため、例えば人間や動物に有害な
メタノール、クレゾール、フェノール類が竹酢液に混入
することは避けられず、得られた竹酢液は食酢としての
利用が困難であり、その用途は著しく制限されていた。2. Description of the Related Art Conventionally, it has been widely used to obtain a bamboo vinegar containing acetic acid as a main component by distilling a bamboo dry distillate. However, the simple distillation has insufficiently separated the organic substances in the bamboo vinegar solution. For this reason, for example, methanol, cresol, and phenols harmful to humans and animals are inevitably mixed into bamboo vinegar, and the resulting bamboo vinegar is difficult to use as vinegar, and its use is significantly limited. It had been.
【0003】一方、竹乾留液中のシクロペンテノンやホ
ルムアルデヒドなどを含むタール分は、竹乾留液に炭酸
カルシウムを添加して、竹乾留液中の酸との反応で発生
する炭酸ガスの発泡によりこれを浮上させ、さらに水酸
化ナトリウムを添加してpHを6.4以上に調整した
後、タール分を膜あるいは静置により分離して取り除く
ことが知られている(特開平9−249886号)。し
かしながら、この方法では、炭酸カルシウムと水酸化ナ
トリウムの併用により、多量のアルカリ塩が残る欠点が
あった。また、酸性の竹乾留液のpHを中性に調整する
だけでは、蒸留工程において、人体に有害なメタノール
やクレゾールなどの竹乾留液に含まれる種々の低沸点化
合物と酢酸が共沸し、そのままでは食用に供することが
困難であった。[0003] On the other hand, the tar component containing cyclopentenone and formaldehyde in the bamboo distillate is obtained by adding calcium carbonate to the bamboo distillate and foaming carbon dioxide gas generated by the reaction with the acid in the bamboo dry distillate. It is known that this is floated, and the pH is adjusted to 6.4 or more by adding sodium hydroxide, and then the tar component is separated and removed by a membrane or standing (Japanese Patent Application Laid-Open No. 9-249886). . However, this method has a disadvantage that a large amount of alkali salt remains due to the combination of calcium carbonate and sodium hydroxide. Also, by simply adjusting the pH of the acidic bamboo dry distillate to neutral, in the distillation step, various low-boiling compounds contained in the bamboo dry distillate such as methanol and cresol, which are harmful to the human body, and acetic acid azeotrope, and as it is. Then it was difficult to serve for food.
【0004】[0004]
【発明が解決しようとする課題】本発明は、前記のごと
き問題点を解決したもので、食酢に適する竹酢液を得る
とともに、その他の成分を効率良く分離取得し得る竹酢
液の製造方法を提供することを目的としている。SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems and provides a method for producing a bamboo vinegar solution which can obtain a bamboo vinegar solution suitable for vinegar and efficiently separate and acquire other components. It is intended to provide.
【0005】[0005]
【課題を解決するための手段】前記目的を達成した本発
明の竹酢液の製造方法は、竹乾留液から蒸留により竹酢
液を製造するに際し、あらかじめ竹乾留液のpHを9〜
11のアルカリ性に調整した後、炭酸ガスによりpHが
6.5〜7の中性になるまで曝気して疎水性タール分を
除去し、当初の竹乾留液の約半分程度まで蒸留濃縮して
低沸点有機物を留去し、該濃縮液のpHを2.5〜3の
酸性に調整した後、さらに蒸留乾固まで蒸留して、酢酸
を主成分とする竹酢液留分と蒸留残渣を分離取得するこ
とを特徴としている。According to the method for producing a bamboo vinegar of the present invention, which achieves the above object, when producing a bamboo vinegar by distillation from the bamboo dried distillate, the pH of the bamboo dried distillate is previously adjusted to 9 to 10.
After adjusting the alkalinity to 11, the mixture was aerated with carbon dioxide gas until the pH became neutral to 6.5 to 7 to remove the hydrophobic tar component. The boiling point organic substance is distilled off, and the pH of the concentrated solution is adjusted to 2.5 to 3 and then further distilled to dryness to separate a distillate residue and a bamboo vinegar liquid fraction containing acetic acid as a main component. It is characterized by acquiring.
【0006】また、蒸留残渣にさらに有機溶媒を添加し
て有用な溶媒可溶分を抽出、回収することもできる。Further, a useful solvent-soluble matter can be extracted and recovered by further adding an organic solvent to the distillation residue.
【0007】[0007]
【発明の実施の形態】次に図面にしたがって、本発明に
係わる竹酢液の製造方法の実施形態を説明する。図1に
おいて、原料となる竹乾留液1には、例えば孟宗竹をガ
ス炉で乾留し、温度200〜250℃の範囲内において
得られた成分を水冷、回収し、暗所でタール分を沈降さ
せたものを使用する。この乾留液のpHは通常2〜3程
度である。本発明では、この竹乾留液1を膜で固液分離
した後、例えば水酸化ナトリウム水溶液などを用い、p
Hを9〜11のアルカリ性に調整する。このとき、酢酸
などの酸性成分はカルボニルイオン状態に解離され、フ
ェノール類はフェノラートを形成して蒸留不能となる。
pH9以下では、フェノール類が十分にフェノラートを
形成しておらず、濁りを生じるおそれがある。また、p
Hを11以上にするには、多量のアルカリ性化合物の添
加が必要となり、後の中和工程で多量の硫酸を要し、結
果的に多量の塩が生成して経済的ではない。次いで曝気
工程2で炭酸ガスによるバブリングを行う。曝気は生成
した炭酸によりpHが6.5〜7に中和されるまで行
う。pHを6.5以下にするには、長期間に及ぶ炭酸ガ
スのバブリングが必要となり実際的ではない。pH7以
上では、フェノール類がフェノラートのまま残って、第
一蒸留工程で留去されずに残るおそれがある。炭酸ガス
のバブリングにより、同時に竹乾留液中のタール成分が
分離、浮上する。分離されたタール分は、例えばバブリ
ング中にテフロン布のような吸着性の布帛を投入し、こ
れに付着除去する。またバブリング後、改めて竹乾留液
にテフロン布を投入し、約30分間くらい攪拌して付着
除去してもよい。DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, an embodiment of a method for producing a bamboo vinegar according to the present invention will be described with reference to the drawings. In FIG. 1, bamboo dry distillation liquid 1 as a raw material is obtained by, for example, dry distillation of Moso bamboo in a gas furnace, and water-cooling and collecting components obtained in a temperature range of 200 to 250 ° C., and sedimentation of tar components in a dark place. To use. The pH of this dry distillation solution is usually about 2 to 3. In the present invention, after the bamboo dry distillate 1 is solid-liquid separated by a membrane, for example, p
Adjust H to 9-11 alkaline. At this time, acidic components such as acetic acid are dissociated into carbonyl ions, and phenols form phenolates and cannot be distilled.
At a pH of 9 or less, the phenols do not sufficiently form phenolate, and may cause turbidity. Also, p
In order for H to be 11 or more, a large amount of an alkaline compound needs to be added, and a large amount of sulfuric acid is required in a subsequent neutralization step, and as a result, a large amount of salt is generated, which is not economical. Next, in the aeration step 2, bubbling with carbon dioxide gas is performed. Aeration is performed until the pH is neutralized to 6.5 to 7 by the generated carbonic acid. In order to reduce the pH to 6.5 or less, a long-term bubbling of carbon dioxide is required, which is not practical. At a pH of 7 or more, phenols may remain as phenolates and remain without being distilled off in the first distillation step. At the same time, the tar component in the bamboo dry distillate separates and floats by bubbling of carbon dioxide gas. For the separated tar component, for example, an adsorbent cloth such as a Teflon cloth is supplied during bubbling, and the tar is adhered and removed. After bubbling, a Teflon cloth may be added to the bamboo dry distillate again and stirred for about 30 minutes to remove and adhere.
【0008】タール分を除去した清澄な竹乾留液は、第
一蒸留工程3で蒸留する。蒸留は常圧でもよいが、減圧
蒸留が実用的である。蒸留温度は、突沸を避けるために
好ましくは60〜80℃に制御する。第一蒸留工程3で
は、当初の竹乾留液量の約半分程度になるまで蒸留す
る。第一蒸留工程3では、メタノールはほぼ完全に第一
蒸留液4側に留去される。同時に竹乾留液中のその他の
中性成分、フェノール類、クレゾールなどの食酢として
の有害物質も留去される。The clear bamboo dry distillate from which the tar component has been removed is distilled in the first distillation step 3. The distillation may be carried out at normal pressure, but vacuum distillation is practical. The distillation temperature is preferably controlled at 60 to 80 ° C. to avoid bumping. In the first distillation step 3, the distillation is performed until the amount of the bamboo dry distillate becomes about half of the initial amount. In the first distillation step 3, methanol is almost completely distilled off to the first distillate 4 side. At the same time, other harmful substances as vinegar such as neutral components, phenols and cresol in the bamboo dry distillate are distilled off.
【0009】当初の竹乾留液量の約半分程度まで濃縮さ
れた蒸留残液5には、硫酸などの強酸を、先に添加した
水酸化ナトリウムの当量よりやや少ない量添加してpH
2.5〜3の酸性に調整する。この場合、pHが2.4
以下になると、次の第二蒸留工程で硫酸が竹酢液に混入
するので、加え過ぎないように注意を要する。pHを強
酸性にすることにより、酢酸などの酸性分は非解離状態
となり、pHが3以上では酢酸が酢酸ナトリウムを形成
して蒸留不能となり、酢酸の収率が下がる。必要に応じ
て、この段階で再びテフロン布等を投入、攪拌してター
ル分の除去を行う。次いで、この蒸留残液5は、第二蒸
留工程6において、前記同様の理由で約80〜100℃
に制御して乾固するまで蒸留する。蒸留は、常圧でもよ
いが減圧蒸留が望ましい。留去された第二蒸留液7に
は、酢酸をはじめとして大部分の酸性成分が含まれる。
かくして目的物である酢酸を主成分とする竹酢液が得ら
れる。この場合、加えた水酸化ナトリウムなどのアルカ
リ性化合物は、硫酸等の強酸性化合物と反応して、例え
ば硫酸ナトリウムのような塩を形成しており、蒸留され
るおそれはない。[0009] A strong acid such as sulfuric acid is added to the distillation residue 5 concentrated to about half of the initial amount of the bamboo dry distillate to add a slightly smaller amount than the equivalent amount of sodium hydroxide added earlier to adjust the pH.
Adjust to 2.5-3 acidity. In this case, the pH is 2.4
In the following case, sulfuric acid is mixed in the bamboo vinegar in the next second distillation step, so care must be taken not to add too much. By making the pH strongly acidic, acidic components such as acetic acid are in a non-dissociated state. If the pH is 3 or more, acetic acid forms sodium acetate and distillation becomes impossible, and the yield of acetic acid decreases. If necessary, at this stage, a Teflon cloth or the like is again charged and stirred to remove tar. Next, in the second distillation step 6, the distillation residue 5 is heated to about 80 to 100 ° C. for the same reason as described above.
And distill to dryness. The distillation may be carried out at normal pressure, but vacuum distillation is preferred. Most of the acidic components including acetic acid are contained in the second distilled liquid 7 distilled off.
Thus, a bamboo vinegar liquid containing acetic acid as a main component, which is the target substance, is obtained. In this case, the added alkaline compound such as sodium hydroxide reacts with a strongly acidic compound such as sulfuric acid to form a salt such as sodium sulfate, and there is no possibility of distillation.
【0010】一方、蒸留残渣8には、高沸点のポリフェ
ノールのような生理活性を有する有用有機化合物も含ま
れているので、必要に応じてアセトン、アルコールなど
の溶媒で抽出することができる。なお、得られた溶剤抽
出物は、蒸発乾固後エタノールなどに溶解させて、抽出
回収工程9でカラムクロマトグラフィーなどで分離する
と、官能基の違いに基きいくつかのA成分群10、B成
分群11等に分けて取得できる。On the other hand, since the distillation residue 8 contains useful organic compounds having a physiological activity such as high-boiling polyphenols, it can be extracted with a solvent such as acetone or alcohol if necessary. The obtained solvent extract was evaporated to dryness, dissolved in ethanol or the like, and separated by column chromatography or the like in the extraction and recovery step 9. When the solvent extract was separated by column chromatography or the like, several A component groups 10 and B components It can be obtained by dividing into groups 11 and the like.
【0011】[0011]
【実施例1】竹乾留液には、孟宗だけをガス炉で乾留
し、炉内上部温度200〜250℃において乾留された
成分を水冷回収し、暗所で二ヶ月間保存してタール分を
沈降させたものを用いた。その組成は、有機物7.4
%、水分92.6%、酢酸3.4%であった。明るい黄
褐色溶液で、比重は1.01で、pHは2.4であっ
た。Example 1 In the bamboo dry distillate, only Moso was carbonized in a gas furnace, and the components carbonized at a furnace upper temperature of 200 to 250 ° C. were recovered by water cooling and stored in a dark place for two months to remove tar components. The sedimented one was used. Its composition is organic 7.4
%, Water 92.6%, and acetic acid 3.4%. A light tan solution with a specific gravity of 1.01 and a pH of 2.4.
【0012】竹乾留液は、孔径3μmの膜フィルターで
濾過したのち、その1リットルに対して4mol/lの
水酸化ナトリウム水溶液を加えて、pHを11に調整し
た。次いで炭酸ガスを溶液のpHが6.5になるまで送
り込みバブリングするとともに、その間に浮上したター
ル分をテフロン製メッシュ布に付着させて除去した。The bamboo dry distillate was filtered through a membrane filter having a pore size of 3 μm, and the pH was adjusted to 11 by adding a 4 mol / l aqueous sodium hydroxide solution to 1 liter. Next, carbon dioxide gas was fed into the solution until the pH of the solution reached 6.5, followed by bubbling, and the tar content floating during that time was attached to a Teflon mesh cloth and removed.
【0013】タール除去後の竹乾留液を蒸留フラスコに
移して、減圧蒸留装置にセットし、60〜80℃の範囲
で溶液量が半分程度になるまで蒸留した。留去された蒸
留液をガスクロマトグラフィーで分析した結果、フェノ
ール、クレゾール、グアイコール、メタノールなどが検
出された。The bamboo dry distillate from which the tar had been removed was transferred to a distillation flask, set in a vacuum distillation apparatus, and distilled at 60 to 80 ° C. until the amount of the solution became about half. As a result of analyzing the distillate distilled off by gas chromatography, phenol, cresol, guaycol, methanol and the like were detected.
【0014】蒸留残液をビーカーにとり、2mol/l
の硫酸を攪拌下加えて、pHを2.7に調整した。pH
の低下にともなって蒸留残液から炭酸ガスの泡が発生
し、タール分が再び浮上してきたので、再度テフロン製
メッシュ布で前回同様に除去した。pH調整済みの蒸留
残液を80〜100℃で乾固するまで減圧蒸留した。留
去された蒸留液の分析結果、大部分が酢酸であった。フ
ェノール類が微量含まれていたが、メタノールは皆無で
あった。その結果、この竹酢液は、食酢として利用可能
なことが分かった。The distillation residue is placed in a beaker, and 2 mol / l
Was added with stirring to adjust the pH to 2.7. pH
As a result, carbon dioxide gas bubbles were generated from the distillation residue, and the tar component floated again. Therefore, it was removed again with a Teflon mesh cloth as before. The pH-adjusted distillation residue was distilled under reduced pressure at 80 to 100 ° C. until dried. As a result of analysis of the distilled liquid distilled off, most of the liquid was acetic acid. There was a trace amount of phenols, but no methanol. As a result, it was found that this bamboo vinegar solution can be used as vinegar.
【0015】一方、蒸留残渣にアセトン100mlを添
加し、膜フィルターで不溶物を濾別し、アセトン可溶成
分を抽出回収した。不溶物には、多量の硫酸ナトリウム
と少量の酢酸ナトリウム等の塩が含まれていた。アセト
ン抽出物は蒸留してアセトンを完全に留去したのち、さ
らに50%エタノール溶液50mlに溶解し、多孔質ポ
リスチレン樹脂500mlを充填したカラムに担持させ
た後、蒸留水、25%エタノール、50%エタノール、
100%エタノールを用いて順次溶出させ、アセトン抽
出分をさらに分離した。各溶出物は、塩化第二鉄を使用
したフェノール定性試験に対して陽性であり、高沸点の
ポリフェノール成分を含有するものと推定される。尚、
本発明製造方法は木酢液の製造にも適用できる。On the other hand, 100 ml of acetone was added to the distillation residue, insolubles were filtered off with a membrane filter, and acetone-soluble components were extracted and recovered. The insolubles contained large amounts of sodium sulfate and small amounts of salts such as sodium acetate. The acetone extract is distilled to completely remove the acetone, and then dissolved in 50 ml of a 50% ethanol solution. The solution is supported on a column filled with 500 ml of a porous polystyrene resin, and then distilled water, 25% ethanol, 50% ethanol,
Elution was carried out sequentially using 100% ethanol, and the acetone extract was further separated. Each eluate was positive in the phenol qualitative test using ferric chloride, and is presumed to contain a high-boiling polyphenol component. still,
The production method of the present invention can be applied to the production of wood vinegar.
【0016】[0016]
【発明の効果】本発明によれば、以下の利点があり、食
酢として利用可能な竹酢液を効率良く取得できる。加え
て、竹乾留液中の種々の有効成分を分別できるので、使
用目的に応じた成分を分離取得できる。According to the present invention, there are the following advantages, and a bamboo vinegar solution that can be used as vinegar can be efficiently obtained. In addition, since various active components in the bamboo dry distillate can be separated, components according to the purpose of use can be separated and obtained.
【0017】(1)竹乾留液を第一蒸留工程に先立ち、
一旦pH9〜11程度のアルカリ性に調整することによ
り、酢酸をカルボニル化して低沸点化合物とともに留去
されるのを防止し、第二蒸留工程での酢酸の収率が向上
する。(1) Prior to the first distillation step,
Once the pH is adjusted to about 9 to 11 alkalinity, carbonylation of acetic acid is prevented from being distilled off together with low-boiling compounds, and the yield of acetic acid in the second distillation step is improved.
【0018】(2)タール除去を炭酸カルシウムに代え
て炭酸ガスで行うことにより、カルシウムのような余分
な元素の混入を防止、最終蒸留残渣中の不溶金属塩の種
類及び量を低減できる。併せて、炭酸により竹乾留液を
中性化するとともに、フェノール類を遊離の状態とし、
その蒸留除去を容易にする。(2) By removing tar by using carbon dioxide gas instead of calcium carbonate, mixing of extra elements such as calcium can be prevented, and the type and amount of insoluble metal salt in the final distillation residue can be reduced. At the same time, the carbonized bamboo distillate is neutralized with carbonic acid, and phenols are released.
It facilitates its removal by distillation.
【0019】(3)第二蒸留工程に先立ち、蒸留残液を
pH2.5〜3程度の強酸性に調整することにより、酢
酸等の酸成分の蒸留回収を容易にし、竹酢液の純度と収
率が向上、食酢としての利用が可能となる。(3) Prior to the second distillation step, the distillation residue is adjusted to a strongly acidic pH of about 2.5 to 3 to facilitate the recovery of acid components such as acetic acid by distillation, and to improve the purity of the bamboo vinegar solution. The yield is improved, and it can be used as vinegar.
【0020】(4)蒸留残渣からも、必要に応じてアセ
トンやアルコール等の溶媒抽出により、有用な溶媒可溶
性の高沸点有機化合物を回収できる。(4) A useful solvent-soluble, high-boiling organic compound can be recovered from the distillation residue by extracting a solvent such as acetone or alcohol, if necessary.
【図1】本発明に係わる竹酢液の製造方法を示す流れ図
である。FIG. 1 is a flowchart showing a method for producing a bamboo vinegar solution according to the present invention.
1 竹乾留液 2 曝気工程 3 第一蒸留工程 4 第一蒸留液 5 蒸留残液 6 第二蒸留工程 7 第二蒸留液 8 蒸留残渣 9 抽出回収工程 10 A成分群 11 B成分群 DESCRIPTION OF SYMBOLS 1 Bamboo dry distillate 2 Aeration process 3 First distillation process 4 First distillate 5 Distillation residue 6 Second distillation process 7 Second distillate 8 Distillation residue 9 Extraction and recovery process 10 A component group 11 B component group
Claims (2)
るに際し、あらかじめ竹乾留液のpHを9〜11のアル
カリ性に調整した後、炭酸ガスによりpHが6.5〜7
の中性になるまで曝気して疎水性タール分を除去し、当
初の竹乾留液の約半分程度まで蒸留濃縮して低沸点有機
物を留去し、該濃縮液のpHを2.5〜3の酸性に調整
した後、さらに蒸留乾固まで蒸留して、酢酸を主成分と
する竹酢液留分と蒸留残渣を分離取得することを特徴と
する竹酢液の製造方法。1. In producing a bamboo vinegar solution by distillation from a bamboo dry distillate, the pH of the bamboo dry distillate is previously adjusted to 9 to 11 alkalinity, and then the pH is adjusted to 6.5 to 7 with carbon dioxide gas.
To remove the hydrophobic tar content by aeration until neutral, and distill and concentrate to about half of the original bamboo dry distillate to evaporate low boiling organic substances. A method for producing a bamboo vinegar solution, which comprises adjusting the acidity of the solution to an acidity and further distilling it to dryness to separate and obtain a bamboo vinegar liquid fraction containing acetic acid as a main component and a distillation residue.
媒可溶成分を抽出することを特徴とする請求項1記載の
竹酢液の製造方法。2. The method for producing a bamboo vinegar solution according to claim 1, wherein a solvent-soluble component is further extracted from the distillation residue by solvent extraction.
Priority Applications (1)
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JP10334522A JP2985003B1 (en) | 1998-11-25 | 1998-11-25 | Production method of bamboo vinegar liquid |
Applications Claiming Priority (1)
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JP10334522A JP2985003B1 (en) | 1998-11-25 | 1998-11-25 | Production method of bamboo vinegar liquid |
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JP2985003B1 true JP2985003B1 (en) | 1999-11-29 |
JP2000160165A JP2000160165A (en) | 2000-06-13 |
Family
ID=18278353
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JP10334522A Expired - Fee Related JP2985003B1 (en) | 1998-11-25 | 1998-11-25 | Production method of bamboo vinegar liquid |
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Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN111675362A (en) * | 2020-06-19 | 2020-09-18 | 合肥森愚仁新材料科技有限公司 | Harmless treatment method of moso bamboo wet carbonization wastewater, crop growth regulator and use method thereof |
CN113861017A (en) * | 2021-11-10 | 2021-12-31 | 浙江农林大学 | Organic product calcium acetate with biomass dry distillation acid as raw material, natural edible acetic acid prepared from organic product calcium acetate and application of natural edible acetic acid |
CN115369190A (en) * | 2022-02-21 | 2022-11-22 | 淮阴师范学院 | Method for preparing xylo-oligosaccharide mixed solution by controlled catalytic biomass oriented hydrolysis of bamboo vinegar |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2002071851A1 (en) * | 2001-03-08 | 2002-09-19 | Keio University | Ethylene gas adsorbent, method of controlling ethylene gas concentration and ethylene gas sensor |
JP2012188471A (en) * | 2011-03-08 | 2012-10-04 | Yamaguchi Prefectural Industrial Technology Institute | Method for reducing formaldehyde in wood vinegar |
CN104164248A (en) * | 2014-08-28 | 2014-11-26 | 桂林市艾康科技有限公司 | Preparation method of refined bamboo vinegar |
-
1998
- 1998-11-25 JP JP10334522A patent/JP2985003B1/en not_active Expired - Fee Related
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN111675362A (en) * | 2020-06-19 | 2020-09-18 | 合肥森愚仁新材料科技有限公司 | Harmless treatment method of moso bamboo wet carbonization wastewater, crop growth regulator and use method thereof |
CN113861017A (en) * | 2021-11-10 | 2021-12-31 | 浙江农林大学 | Organic product calcium acetate with biomass dry distillation acid as raw material, natural edible acetic acid prepared from organic product calcium acetate and application of natural edible acetic acid |
CN115369190A (en) * | 2022-02-21 | 2022-11-22 | 淮阴师范学院 | Method for preparing xylo-oligosaccharide mixed solution by controlled catalytic biomass oriented hydrolysis of bamboo vinegar |
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