JPH0437838B2 - - Google Patents

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Publication number
JPH0437838B2
JPH0437838B2 JP59080670A JP8067084A JPH0437838B2 JP H0437838 B2 JPH0437838 B2 JP H0437838B2 JP 59080670 A JP59080670 A JP 59080670A JP 8067084 A JP8067084 A JP 8067084A JP H0437838 B2 JPH0437838 B2 JP H0437838B2
Authority
JP
Japan
Prior art keywords
egg yolk
extraction
carbon dioxide
cholesterol
present
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 - Lifetime
Application number
JP59080670A
Other languages
Japanese (ja)
Other versions
JPS60224695A (en
Inventor
Mineo Hasegawa
Hideyo Okyama
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Kewpie Corp
Original Assignee
QP Corp
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 QP Corp filed Critical QP Corp
Priority to JP59080670A priority Critical patent/JPS60224695A/en
Publication of JPS60224695A publication Critical patent/JPS60224695A/en
Publication of JPH0437838B2 publication Critical patent/JPH0437838B2/ja
Granted legal-status Critical Current

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Classifications

    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02PCLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P20/00Technologies relating to chemical industry
    • Y02P20/50Improvements relating to the production of bulk chemicals
    • Y02P20/54Improvements relating to the production of bulk chemicals using solvents, e.g. supercritical solvents or ionic liquids

Description

【発明の詳細な説明】[Detailed description of the invention]

本発明は卵黄燐脂質の新規製造法に関するもの
である。 卵黄から抽出して得られる卵黄燐脂質は、従来
より食品分野、あるいは医薬分野等において幅広
く用いられている。これらの分野における卵黄燐
脂質の一層の利用拡大を図るに際して、燐脂質含
量が約60%以上である、即ち、純度が約60%以上
である卵黄燐脂質の開発が望まれている。このよ
うな要望に対して従来種々の試みがなされてき
た。その代表的なものとして、例えば、本発明者
のひとりである長谷川らによる乾燥卵黄から燐脂
質を高純度に抽出する方法[特公昭59−5263号公
報(特願昭52−127915号明細書)]がある。この
方法は、乾燥卵黄を用いた、特定のエタノール濃
度および抽出温度の条件下でのエタノール溶剤抽
出法であつて、得られる卵黄燐脂質は純度が60%
以上のものである。しかし、上記のような条件下
での抽出法であつても燐脂質と共にコレステロー
ルやトリグリセリド等の中性脂も抽出され、最終
製品にこれらが含有されてしまい、食品分野、あ
るいは医薬分野等におけるこのものの利用に制限
を与えているという問題があつた。この溶剤抽出
法を含む従来の種々の試みによつて得られた卵黄
燐脂質は、通常、4〜7%ものコレステロールを
含むものであつた。このコレステロール含量を低
減させ、燐脂質含量を増加させる方法として、例
えば、アセトン精製法が知られている。しかし、
このような精製処理をしてもコレステロール含量
を2.5%未満とすることはほとんど不可能で、更
に純度を上げるには処理回数を重ねなければなら
ないなど、作業面およびコスト面においても問題
があつた。 このような現状にあつて、本発明は、純度が約
60%以上で、しかもコレステロールをほとんど含
まず、更にトリグリセリド等の中性脂含量の減じ
た卵黄燐脂質を製造する方法を提供することを目
的とする。 本発明者らは上記の目的に即して鋭意研究を重
ねたところ、本発明者のひとりである長谷川によ
り開発され、特願昭58−10137号明細書(昭和58
年1月25日出願)に記載されている、超臨界二酸
化炭素を抽出媒体として用いコレステロールを含
有する乾燥状食品からコレステロールを抽出する
方法における抽出法を、前記特公昭59−5263号公
報で開示されているエタノール溶剤抽出法に適宜
併用するならば、初期の目的を達成した卵黄燐脂
質の製造法を提供することができることを見い出
し、本発明に至つた。 本発明は、乾燥状卵黄を超臨界二酸化炭素に接
触させた後、このものをエタノール溶剤抽出に付
し、次いで得られた抽出液から溶剤を除去するこ
とを特徴とする卵黄燐脂質の製造法を提供するも
のである。 以下、本発明を詳しく説明する。 本発明の方法が適用される卵黄は、乾燥状態に
ある卵黄、即ち、乾燥状卵黄である。但し、本発
明において卵黄なる用語は、卵黄そのものの他、
全卵のように卵黄成分を含むものも包含するもの
とする。乾燥状卵黄としては、具体的には、例え
ば、鶏卵を割卵分離して得た卵黄液を噴霧乾燥、
凍結乾燥、真空乾燥等の乾燥方法により乾燥させ
たものを挙げることができる。尚、乾燥の程度は
水分含量が15%以下、好ましくは8%以下である
ことが望ましい。液状ないし含水状態にある卵黄
は、超臨界二酸化炭素との接触の際その水分がま
ず超臨界二酸化炭素に取り込まれてしまうために
超臨界二酸化炭素のコレステロール抽出作用が阻
害されるからである。 本発明の方法によれば、乾燥状卵黄を、まず、
超臨界二酸化炭素に接触させる。この接触操作に
より乾燥状卵黄からコレステロールが抽出され
る。ここにおいて超臨界二酸化炭素とは、抽出時
に31.0℃の臨界温度あるいはそれ以上の温度およ
び72.80気圧の臨界圧あるいはそれ以上の圧力の
条件下にある二酸化炭素を意味する。特に、35〜
45℃の温度および130〜300気圧の条件下にある超
臨界二酸化炭素が本発明の方法において好ましく
用いられる。 このような超臨界二酸化炭素を抽出媒体として
用い、乾燥状卵黄からコレステロールを抽出する
操作は、この抽出操作が効果的に実施しうる限り
従来の超臨界二酸化炭素を抽出媒体として用いた
抽出法、例えば、特開昭55−54003号公報に開示
されている植物性および動物性材料から植物脂、
動物脂、アロマ、薬物エキス等を抽出する方法、
また、特開昭55−69585号公報に開示されている
カフエイン含有溶液からカフエインを抽出する方
法、更に、特開昭57−194760号公報に開示されて
いる植物から濃縮エキスを抽出する方法等、にお
いて通常用いられている抽出装置を用いて行いう
るが、一般的には下記に示す具体例に従つて行え
ばよい。 以下、具体例を図に従つて説明する。 図に示す装置は、超臨界二酸化炭素を用いる抽
出装置であつて、液体二酸化炭素ボンベ1からプ
ランジヤーポンプ2を作動させて液体二酸化炭素
を加熱装置3に通してガス化したのち抽出槽4に
順次送り込み、この際バルブ5を閉じておくこと
によつて二酸化炭素の超臨界状態を形成させる。
上記抽出槽4には予め乾燥状卵黄が充填されてお
り、形成された超臨界二酸化炭素との接触がここ
においてなされる。尚、加熱装置3における温度
およびプランジヤーポンプ2の作動圧力を適宜調
節することによつて所望の条件を有する超臨界二
酸化炭素を形成することができる。抽出槽4にお
いてコレステロールの抽出が開始された時点で、
バルブ5を半開すると、抽出槽4から流出したコ
レステロールを含む臨界状態の二酸化炭素は常圧
の二酸化炭素ガスとなり分離槽6に導びかれ、こ
こで抽出油が分離され、二酸化炭素ガスは更に円
筒フイルター7を通り、次いで液化工程(図示せ
ず)を経て液体二酸化炭素として回収される。そ
して、この操作を2〜15時間続行した後プランジ
ヤーポンプ2の作動を止め、バルブ5を全開する
と、抽出槽4内は常圧になり、この槽内の卵黄中
に含まれている超臨界二酸化炭素は二酸化炭素ガ
スとなつて追い出され、抽出槽4から流出する。
一方、コレステロールが抽出された卵黄は、乾燥
状態のまま、上下部においてフイルターを備えた
抽出槽4から適宜回収され、次のエタノール溶剤
抽出工程に導びかれる。 上記のような超臨界二酸化炭素を用いた抽出操
作によつて乾燥状卵黄からその含有コレステロー
ルの大部分が除かれるに加えて、トリグリセリド
等の中性脂も抽出除去される。尚、これらの除去
の程度は抽出操作の条件を強める程、即ち温度お
よび圧力を高め、抽出時間を長くする程、顕著と
なる傾向がある。例えば、40〜45℃の温度、180
〜300気圧および10〜15時間の条件下では、コレ
ステロールはほぼ完全に、また、中性脂は大部分
が抽出除去されうる。 本発明の方法によれば、超臨界二酸化炭素に接
触させコレステロールの大部分およびトリグリセ
リド等の中性脂の少なくとも一部を除去した乾燥
状卵黄を次いでエタノール溶剤抽出に付す。この
溶剤抽出により卵黄から卵黄燐脂質が抽出され
る。抽出操作は、その手順に関しては、従来のこ
の種のものに準ずればよい。但し、本発明の方法
においてはこの抽出操作を一般的には下記の操作
条件の下で行なう。まず、用いるエタノール溶剤
は、エタノール濃度が約70〜100容量%の含水ア
ルコールあるいは無水アルコールである。抽出の
対象物である乾燥状卵黄は既に超臨界二酸化炭素
に接触させたものであるために、上記したような
エタノール濃度の範囲の溶剤でもつて卵黄燐脂質
を好ましく抽出することができるが、70%未満の
ものであると抽出能力が低下してくるからであ
る。エタノール濃度が95〜100容量%のものがよ
り好ましい。抽出温度は約40℃以下の温度であ
る。この温度より高いと卵黄燐脂質が褐変してく
る傾向があるからである。15〜20℃であるのがよ
り好ましい。その他の抽出操作における条件、例
えば、抽出時間、乾燥状卵黄に対するエタノール
溶剤の割合等、はすべて従来のエタノール溶剤抽
出法に準ずればよい。 本発明の方法によれば、上記したような抽出操
作によつて卵黄燐脂質を含む抽出液が得られ、次
いでこの抽出液から溶剤を除去して卵黄燐脂質を
得る。この溶剤除去の方法は従来のこの種の方法
と何ら異なることなく、例えば、常圧蒸留、減圧
蒸留等の手段を適宜採用して行えばよい。 こうして得られた卵黄燐脂質は、コレステロー
ルをほとんど含まないのみならず、トリグリセリ
ド等の中性脂の含量も減じたものであり、かつ純
度が60%以上の製品である。よつて、本発明の方
法によりえられる卵黄燐脂質は、更に精製処理等
に付すことなくそのままの状態で、従来の製品に
比べて食品分野あるいは医薬分野等において更に
一層の利用拡大が図れるものである。尚、このよ
うな本発明による製品を更に通常の精製処理に付
するならば、極めて純度の高い卵黄燐脂質を製造
することができることは言うまでもない。 以下、本発明を実施例でもつて更に詳しく説明
する。これらの実施例は本発明のコレステロール
および中性脂除去効果を充分に説明するものであ
るが、本発明はこれらのみによつて制限を受ける
ものではない。尚、本発明における%は他に特記
のない限り重量%を意味する。 実施例 1 この実施例においては、乾燥状卵黄として噴霧
乾燥して得た卵黄粉(コレステロール含量:2.5
%、トリグリセリド含量:41%、燐脂質含量:18
%および水分含量:5%)を用い、下記の方法に
より卵黄燐脂質を製造した。 前記した図に基づく具体例に従い、卵黄粉10Kg
に対して40℃−200気圧の条件下の超臨界二酸化
炭素を9時間に亘つて接触させた。抽出完了後は
常温常圧に戻し、卵黄粉より二酸化炭素を分離し
てコレステロールの大部分およびトリグリセリド
の一部が除去された卵黄粉6.6Kgを回収した。 次いでこのものに95%エタノール80Kgを加え、
撹拌しながら15℃で1時間抽出操作を行なつた。
こうして抽出したのち過して得た抽出液を減圧
蒸留に付して溶剤を留去し、2.8Kgの本発明の卵
黄燐脂質(イ)を得た。 対照として、上記の製造法において卵黄粉10Kg
を超臨界二酸化炭素に接触させることなく直ちに
このものに無水エタノール800Kgを加え、以後は
上記の方法にすべて準じて2.6Kgの対照の粗製卵
黄燐脂質(ロ)を製造した。 こうして得られた両製品を色調、燐脂質含量お
よびコレステロール含量について常法により調べ
たところ、その結果はそれぞれ以下の表1に示す
通りであつた。
The present invention relates to a novel method for producing egg yolk phospholipids. Egg yolk phospholipids obtained by extraction from egg yolk have been widely used in the food field, pharmaceutical field, etc. In order to further expand the use of egg yolk phospholipids in these fields, it is desired to develop egg yolk phospholipids that have a phospholipid content of about 60% or more, that is, a purity of about 60% or more. Various attempts have been made to meet such demands. A representative example of this method is, for example, a method for extracting phospholipids with high purity from dried egg yolk by one of the inventors, Hasegawa et al. ] There is. This method is an ethanol solvent extraction method using dried egg yolks under conditions of specific ethanol concentration and extraction temperature, and the resulting egg yolk phospholipids have a purity of 60%.
That's all. However, even with the extraction method under the above conditions, neutral fats such as cholesterol and triglycerides are extracted along with phospholipids, and these are contained in the final product. There was a problem with restrictions on the use of things. Egg yolk phospholipids obtained by various conventional attempts including this solvent extraction method usually contain as much as 4 to 7% cholesterol. For example, an acetone purification method is known as a method for reducing the cholesterol content and increasing the phospholipid content. but,
Even with this purification process, it is almost impossible to reduce the cholesterol content to less than 2.5%, and to further increase the purity, it is necessary to repeat the process multiple times, which poses problems in terms of work and cost. . Under such current circumstances, the present invention is applicable to products with a purity of approximately
It is an object of the present invention to provide a method for producing egg yolk phospholipid having a content of 60% or more, almost no cholesterol, and a reduced content of neutral fats such as triglycerides. The inventors of the present invention conducted extensive research in accordance with the above objectives, and one of the inventors, Hasegawa, developed the invention, which was published in the specification of Japanese Patent Application No. 10137-1983
The above-mentioned Japanese Patent Publication No. 59-5263 discloses an extraction method for extracting cholesterol from dried foods containing cholesterol using supercritical carbon dioxide as an extraction medium, which is described in Japanese Patent Application Publication No. 59-5263 (filed on January 25, 2013). The present inventors have discovered that if the present invention is used in combination with the conventional ethanol solvent extraction method, it is possible to provide a method for producing egg yolk phospholipids that achieves the initial objective, leading to the present invention. The present invention provides a method for producing egg yolk phospholipids, which comprises contacting dried egg yolk with supercritical carbon dioxide, subjecting it to ethanol solvent extraction, and then removing the solvent from the resulting extract. It provides: The present invention will be explained in detail below. The egg yolk to which the method of the present invention is applied is an egg yolk in a dry state, that is, a dry egg yolk. However, in the present invention, the term egg yolk refers to egg yolk itself, as well as
It also includes eggs that contain egg yolk components, such as whole eggs. Specifically, the dried egg yolk is obtained by, for example, spray-drying an egg yolk liquid obtained by breaking and separating chicken eggs.
Examples include those dried by drying methods such as freeze drying and vacuum drying. The degree of drying is preferably such that the moisture content is 15% or less, preferably 8% or less. This is because when the egg yolk is in a liquid or water-containing state, when it comes into contact with supercritical carbon dioxide, its water is first absorbed into supercritical carbon dioxide, which inhibits the cholesterol extraction effect of supercritical carbon dioxide. According to the method of the present invention, dried egg yolk is first
Contact with supercritical carbon dioxide. Cholesterol is extracted from the dried egg yolk by this contacting operation. Here, supercritical carbon dioxide means carbon dioxide that is under conditions of a critical temperature of 31.0° C. or higher and a critical pressure of 72.80 atmospheres or higher during extraction. Especially, 35~
Supercritical carbon dioxide at a temperature of 45° C. and a pressure of 130 to 300 atmospheres is preferably used in the process of the invention. The operation of extracting cholesterol from dried egg yolk using supercritical carbon dioxide as an extraction medium is a conventional extraction method using supercritical carbon dioxide as an extraction medium, as long as this extraction operation can be carried out effectively. For example, vegetable fat from vegetable and animal materials disclosed in Japanese Patent Application Laid-Open No. 55-54003,
Methods for extracting animal fat, aroma, drug extracts, etc.
Further, a method for extracting caffein from a caffein-containing solution disclosed in JP-A-55-69585, a method for extracting a concentrated extract from a plant as disclosed in JP-A-57-194760, etc. It can be carried out using an extraction device commonly used in the industry, but generally it can be carried out according to the specific example shown below. A specific example will be described below with reference to the drawings. The device shown in the figure is an extraction device that uses supercritical carbon dioxide, in which a plunger pump 2 is operated from a liquid carbon dioxide cylinder 1 to gasify the liquid carbon dioxide through a heating device 3 and then to an extraction tank 4. By sequentially feeding the carbon dioxide and keeping the valve 5 closed at this time, a supercritical state of carbon dioxide is formed.
The extraction tank 4 is filled in advance with dried egg yolk, which is brought into contact with the formed supercritical carbon dioxide. Note that supercritical carbon dioxide having desired conditions can be formed by appropriately adjusting the temperature in the heating device 3 and the operating pressure of the plunger pump 2. When the extraction of cholesterol is started in the extraction tank 4,
When the valve 5 is half-opened, the carbon dioxide in a critical state containing cholesterol flowing out from the extraction tank 4 becomes carbon dioxide gas at normal pressure and is led to the separation tank 6, where the extracted oil is separated and the carbon dioxide gas is further passed through the cylinder. It passes through a filter 7 and then undergoes a liquefaction process (not shown) to be recovered as liquid carbon dioxide. After continuing this operation for 2 to 15 hours, the plunger pump 2 is stopped and the valve 5 is fully opened. The inside of the extraction tank 4 becomes normal pressure, and the supercritical water contained in the egg yolk in this tank becomes normal pressure. The carbon dioxide is expelled as carbon dioxide gas and flows out of the extraction tank 4.
On the other hand, the egg yolk from which cholesterol has been extracted is appropriately collected in a dry state from the extraction tank 4 equipped with filters at the upper and lower portions, and is led to the next ethanol solvent extraction step. By the extraction operation using supercritical carbon dioxide as described above, not only most of the cholesterol contained in the dried egg yolk is removed, but also neutral fats such as triglycerides are extracted and removed. Incidentally, the extent of these removals tends to become more significant as the conditions of the extraction operation are strengthened, that is, as the temperature and pressure are increased and the extraction time is lengthened. For example, a temperature of 40-45℃, 180
Under conditions of ~300 atm and 10 to 15 hours, cholesterol can be almost completely extracted and neutral fats can be largely extracted. According to the method of the present invention, dried egg yolk that has been brought into contact with supercritical carbon dioxide to remove most of the cholesterol and at least a portion of neutral fats such as triglycerides is then subjected to ethanol solvent extraction. Egg yolk phospholipids are extracted from egg yolks by this solvent extraction. The extraction operation may be carried out in accordance with conventional extraction procedures of this type. However, in the method of the present invention, this extraction operation is generally carried out under the following operating conditions. First, the ethanol solvent used is hydrous alcohol or absolute alcohol with an ethanol concentration of about 70 to 100% by volume. Since the dried egg yolk, which is the object of extraction, has already been brought into contact with supercritical carbon dioxide, egg yolk phospholipids can be preferably extracted even with a solvent in the ethanol concentration range mentioned above. This is because if it is less than %, the extraction ability will decrease. More preferably, the ethanol concentration is 95 to 100% by volume. The extraction temperature is about 40°C or below. This is because if the temperature is higher than this, the egg yolk phospholipids tend to turn brown. More preferably the temperature is 15-20°C. All other conditions for the extraction operation, such as extraction time, ratio of ethanol solvent to dry egg yolk, etc., may be in accordance with conventional ethanol solvent extraction methods. According to the method of the present invention, an extract containing egg yolk phospholipids is obtained by the extraction operation as described above, and then the solvent is removed from this extract to obtain egg yolk phospholipids. The method for removing the solvent is no different from conventional methods of this kind, and may be carried out by appropriately employing, for example, atmospheric distillation, reduced pressure distillation, or the like. The egg yolk phospholipid thus obtained is a product that not only contains almost no cholesterol but also has a reduced content of neutral fats such as triglycerides, and has a purity of 60% or more. Therefore, the egg yolk phospholipid obtained by the method of the present invention can be used in the food field or the pharmaceutical field even more widely than conventional products without undergoing any further purification treatment. be. It goes without saying that if such a product according to the present invention is further subjected to a conventional purification treatment, egg yolk phospholipid with extremely high purity can be produced. Hereinafter, the present invention will be explained in more detail with reference to Examples. Although these examples fully explain the cholesterol and neutral fat removing effects of the present invention, the present invention is not limited only by these examples. Note that % in the present invention means % by weight unless otherwise specified. Example 1 In this example, egg yolk powder (cholesterol content: 2.5
%, triglyceride content: 41%, phospholipid content: 18
% and water content: 5%), egg yolk phospholipid was produced by the following method. According to the specific example based on the diagram above, 10 kg of egg yolk powder
was brought into contact with supercritical carbon dioxide under conditions of 40°C and 200 atm for 9 hours. After the extraction was completed, the temperature was returned to normal pressure, carbon dioxide was separated from the egg yolk powder, and 6.6 kg of egg yolk powder from which most of the cholesterol and some of the triglycerides had been removed was recovered. Next, add 80 kg of 95% ethanol to this,
The extraction operation was carried out at 15° C. for 1 hour while stirring.
After the extraction in this manner, the filtered extract was subjected to vacuum distillation to remove the solvent, yielding 2.8 kg of egg yolk phospholipid (a) of the present invention. As a control, 10 kg of egg yolk powder was prepared using the above manufacturing method.
800 kg of absolute ethanol was immediately added to this without contacting it with supercritical carbon dioxide, and thereafter 2.6 kg of crude egg yolk phospholipid (2) as a control was produced in accordance with the above method. Both products thus obtained were examined for color tone, phospholipid content and cholesterol content using conventional methods, and the results were as shown in Table 1 below.

【表】 上記の結果より、本発明の方法によれば純度が
60%以上で、しかもコレステロールがほとんど含
まれていない卵黄燐脂質が製造されることが理解
される。 実施例 2 この実施例においては、乾燥状卵黄として凍結
乾燥して得た卵黄粉(コレステロール含量:2.6
%、トリグリセリド含量:42%、燐脂質含量:18
%および水分含量:3%)を用い、下記の方法に
より卵黄燐脂質を製造した。 前記した図に基づく具体例に従い、卵黄粉5Kg
に対して42℃−300気圧の条件下の超臨界二酸化
炭素を12時間に亘つて接触させた。抽出完了後は
常温常圧に戻し、卵黄粉より二酸化炭素を分離し
てコレステロールの大部分およびトリグリセリド
等の中性脂の大部分が除去された卵黄粉2.8Kgを
回収した。 次いでこのものに95容量%の含水エタノール40
Kgを加え、撹拌しながら20℃で1時間抽出操作を
行なつた。こうして抽出したのち過して得た抽
出液を減圧蒸留に付して溶剤を留去し、0.86Kgの
卵黄燐脂質を得た。 対照として、上記の製造法において卵黄粉5Kg
を超臨界二酸化炭素に接触させることなく直ちに
このものにジクロルメタン35Kgを加え、撹拌しな
がら20℃で1時間抽出操作を行なつた。こうして
抽出したのち過して得た抽出液を減圧蒸留に付
して溶剤を留去し、3.1Kgの粗製卵黄燐脂質を製
造した。この粗製品を更にアセトン精製法に付
し、アセトンを留去して0.9Kgの卵黄燐脂質を得
た。 こうして得られた両製品の色調、燐脂質含量、
コレステロール含量および残存アセトン含量につ
いて常法により調べたところ、その結果はそれぞ
れ以下の表2に示す通りであつた。
[Table] From the above results, according to the method of the present invention, the purity is
It is understood that egg yolk phospholipids containing 60% or more and almost no cholesterol are produced. Example 2 In this example, egg yolk powder (cholesterol content: 2.6
%, triglyceride content: 42%, phospholipid content: 18
% and water content: 3%), egg yolk phospholipid was produced by the following method. According to the specific example based on the diagram above, 5 kg of egg yolk powder
was brought into contact with supercritical carbon dioxide under the conditions of 42°C and 300 atm for 12 hours. After the extraction was completed, the temperature was returned to normal pressure, carbon dioxide was separated from the egg yolk powder, and 2.8 kg of egg yolk powder from which most of the cholesterol and most of the neutral fats such as triglycerides had been removed was recovered. Then add 95% by volume aqueous ethanol 40% to this
Kg was added, and the extraction operation was performed at 20°C for 1 hour while stirring. After the extraction in this manner, the filtered extract was subjected to vacuum distillation to remove the solvent, yielding 0.86 kg of egg yolk phospholipid. As a control, 5 kg of egg yolk powder was used in the above manufacturing method.
Immediately, 35 kg of dichloromethane was added to the mixture without contacting it with supercritical carbon dioxide, and an extraction operation was performed at 20° C. for 1 hour while stirring. After the extraction in this manner, the filtered extract was subjected to vacuum distillation to remove the solvent, producing 3.1 kg of crude egg yolk phospholipid. This crude product was further subjected to an acetone purification method, and the acetone was distilled off to obtain 0.9 kg of egg yolk phospholipid. The color tone, phospholipid content, and
The cholesterol content and residual acetone content were examined by conventional methods, and the results were as shown in Table 2 below.

【表】 上記の結果より、本発明の方法において超臨界
二酸化炭素による抽出操作の条件を強めることに
よりコレステロールはほぼ完全に除去された卵黄
燐脂質が製造され、このものは更に精製処理に付
すことなく従来品と比べ食品分野あるいは医薬分
野等に更に一層幅広く利用されうる可能性がある
ことがわかる。尚、本発明の方法によつて得られ
た製品は中性脂が大部分除去されたものであつ
た。
[Table] From the above results, egg yolk phospholipids from which cholesterol has been almost completely removed can be produced by strengthening the extraction operation conditions using supercritical carbon dioxide in the method of the present invention, and this product can be further purified. It can be seen that this product has the potential to be used more widely in the food and pharmaceutical fields than conventional products. Incidentally, the product obtained by the method of the present invention had most of the neutral fat removed.

【図面の簡単な説明】[Brief explanation of drawings]

図は、本発明における超臨界二酸化炭素を用い
た抽出操作を実施するための抽出装置の一例を示
す図である。図中の記号はそれぞれ下記のものを
意味する。 1……液体二酸化炭素ボンベ、2……プランジ
ヤーポンプ、3……加温装置、4……抽出槽、5
……バルブ、6……分離槽、7……円筒フイルタ
ー。
The figure is a diagram showing an example of an extraction device for carrying out an extraction operation using supercritical carbon dioxide in the present invention. The symbols in the figure each mean the following. 1... Liquid carbon dioxide cylinder, 2... Plunger pump, 3... Warming device, 4... Extraction tank, 5
... Valve, 6... Separation tank, 7... Cylindrical filter.

Claims (1)

【特許請求の範囲】[Claims] 1 乾燥状卵黄を超臨界二酸化炭素に接触させた
後、このものをエタノール溶剤抽出に付し、次い
で得られた抽出液から溶剤を除去することを特徴
とする卵黄燐脂質の製造法。
1. A method for producing egg yolk phospholipid, which comprises contacting dried egg yolk with supercritical carbon dioxide, subjecting it to ethanol solvent extraction, and then removing the solvent from the resulting extract.
JP59080670A 1984-04-21 1984-04-21 Production method of egg yolk phospholipid Granted JPS60224695A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP59080670A JPS60224695A (en) 1984-04-21 1984-04-21 Production method of egg yolk phospholipid

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP59080670A JPS60224695A (en) 1984-04-21 1984-04-21 Production method of egg yolk phospholipid

Publications (2)

Publication Number Publication Date
JPS60224695A JPS60224695A (en) 1985-11-09
JPH0437838B2 true JPH0437838B2 (en) 1992-06-22

Family

ID=13724792

Family Applications (1)

Application Number Title Priority Date Filing Date
JP59080670A Granted JPS60224695A (en) 1984-04-21 1984-04-21 Production method of egg yolk phospholipid

Country Status (1)

Country Link
JP (1) JPS60224695A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100451647B1 (en) * 2001-02-01 2004-10-08 주식회사 고센바이오텍 Method for extracting functional substance from yolk by supercritical fluid extraction process

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5623997B2 (en) * 1973-01-12 1981-06-03
DE3011185A1 (en) * 1980-03-22 1981-10-01 Kali-Chemie Pharma Gmbh, 3000 Hannover METHOD FOR OBTAINING DIRECTLY APPLICABLE RIN (PARAGRAPH) LECITHIN FOR PHYSIOLOGICAL PURPOSES

Also Published As

Publication number Publication date
JPS60224695A (en) 1985-11-09

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