JP4344039B2 - Dream Accelerator - Google Patents

Dream Accelerator Download PDF

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Publication number
JP4344039B2
JP4344039B2 JP10340499A JP10340499A JP4344039B2 JP 4344039 B2 JP4344039 B2 JP 4344039B2 JP 10340499 A JP10340499 A JP 10340499A JP 10340499 A JP10340499 A JP 10340499A JP 4344039 B2 JP4344039 B2 JP 4344039B2
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Japan
Prior art keywords
serine
phosphatidyl
dream
salt
soybean
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JP10340499A
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Japanese (ja)
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JP2000297039A (en
Inventor
聰 工藤
正士 酒井
秀行 大和矢
豪人 片岡
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Yakult Honsha Co Ltd
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Yakult Honsha Co Ltd
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Description

【0001】
【発明の属する技術分野】
本発明は、入眠前に摂取することにより夢を見る頻度を高め、覚醒時に睡眠中の夢の認識を高めることができる夢見促進剤に関する。
【0002】
【従来の技術】
奇想天外な夢を見ることはそれ自体楽しいことであるが、ケクレによるベンゼン環の発見に代表されるように、夢をヒントに発明や発見に結び付けたり、芸術的な創造に夢を生かした例は多い。また、夢は記憶の処理に関与するとされており、夢見の制御は気分転換や創造性の刺激のみならず脳内の情報処理の面からも意義のある技術と考えられる。
【0003】
従来、レム睡眠状態にある人に視覚や聴覚などの感覚上の刺激を与えることにより、刺激に応じた夢を見させることができるという観点から、レム睡眠中に刺激を与えて夢の内容を制御する装置(特開昭56−13955号)や、そのためのコンピュータソフトなども考案されている。
しかしながら、これは睡眠中に刺激を与える装置を体に取り付ける必要があり、必ずしも満足のゆく方法ではなかった。更に、夢を見る頻度を高めるための方法は未だ提供されていない。
また、夢により創造性を刺激するには、覚醒時に夢を覚えている必要があるが、このような目的を達成するための手段も知られていない。
【0004】
【発明の解決しようとする課題】
このように、従来夢見を促進する手段については、要望が高いにもかかわらずこれまで満足できる手段は報告されておらず、夢見を促進し、かつ覚醒時に夢を覚えているための手段が望まれていた。
本発明者らは、鋭意研究の結果、ホスファチジル−L−セリンを、入眠前に予め投与することにより、夢見を促進し、かつ覚醒時に夢を覚えていることができることを見出し、本発明に至った。
なお、ホスファチジル−L−セリン自体は、アミノ酸を含有する燐脂質として広く生物界に分布するものである(岩波生物学辞典)。
【0005】
【課題を解決するための手段】
本請求項1に係る発明の夢見促進剤は、ホスファチジル−L−セリン又はその塩を有効成分とするものである。本請求項2に係る発明の夢見促進剤は、大豆レシチン由来の転移型ホスファチジル−L−セリン又はその塩を有効成分とするものである。
【0006】
【発明の実施の形態】
本発明の夢見促進剤は、被検体に入眠前に予めホスファチジル−L−セリン又はその塩を投与することにより、夢見を促進し、かつ覚醒時に夢見を認識することができるものである。
【0007】
本発明のホスファチジル−L−セリン又はその塩は、いかなる方法により得られたものでも良く、特に製造方法が限定されるものではないが、例えば、大量にまた安価に提供可能な大豆レシチン、菜種レシチン、卵黄レシチン等からホスファチジル−L−セリンを抽出しても良く、或いはこれらを原料として、ホスホリパーゼDによるホスファチジル基転移反応によって得られる転移型ホスファチジル−L−セリンを用いることもできる。
【0008】
また、牛、豚、羊、鶏、魚等の畜水産物由来、あるいは酵母等の微生物由来のホスファチジル−L−セリンを用いることができる。更には、それらより抽出されたホスファチジル−L−セリンや転移型ホスファチジル−L−セリンに水素添加処理を行ったホスファチジル−L−セリン、あるいは転移型ホスファチジル−L−セリン又水素添加型ホスファチジル−L−セリンの1又は2位の脂肪酸鎖が除かれているリゾ型のホスファチジル−L−セリンを用いることもできる。
【0009】
また、これらの1種または2種以上を組み合わせたものであっても良い。
前記のホスファチジル−L−セリンは、適当な精製処理工程に付し、不純物を除いて用いることが望ましいが、その効果を阻害するような問題がない限り、原料由来や生成工程での不純物を含んだまま用いても良い。
本発明のホスファチジル−L−セリンの塩としては、安全性を保てる塩の形であれば特に制約はないものの、具体的には、ナトリウム塩、カリウム塩、マグネシウム塩、アンモニウム塩等があり、とりわけナトリウム塩、カリウム塩が好ましい。
【0010】
ホスファチジル−L−セリン又はその塩の投与は、経口投与でも静脈内投与でも有効であるが、入眠1〜2時間前に投与されることが好適である。投与量は、成人当たり1日100〜300mg程度で良いが、個人差もありこの範囲に限定されるものではない。
また、経口投与は、そのまま、或いは他の脂質、糖、たんぱく質、ビタミン、食物エキス等の賦形剤を混ぜて、扱いやすさや保存性、官能特性等を向上させたカプセル剤、錠剤あるいは顆粒剤に加工したものを用いることができる。
【0011】
更に、ホスファチジル−L−セリン又はその塩は、安全性の点でも問題がないので、日常摂取する各種飲食品、例えば、飲料類(茶、珈琲、紅茶、ココア、ハーブ茶、清涼飲料、果汁等)、菓子類(ビスケット、チョコレート、飴、ガム等)、乳製品(乳酸菌飲料、発酵乳、チーズ、アイスクリーム等)あるいはその他のパン、米飯、麺類等、種々の飲食品に配合して用いることができる。
なお、ホスファチジル−L−セリン又はその塩の投与後、入眠前に視覚的な刺激(例えば、映像や絵画等)を与えたり、入眠後に聴覚的な刺激を与えることも本発明の効果を更に高めるのに有効である。
【0012】
本発明で用いられるホスファチジル−L−セリンの製造例を示す。
先ず、大豆由来の転移型ホスファチジル−L−セリンの製造方法について説明する。大豆レシチン(PC80,BOLEC,Croklaan b.c.,オランダ)50gを300ccバイアル瓶に取り、60mlの酢酸エチルを加えて溶解させた。ここに0.1Mリン酸ナトリウム緩衝液(pH7.0)に溶解したL−セリン溶液(0.50g/ml)50mlを加えて混合した後、放線菌由来のホスホリパーゼD溶液(500u/ml,(株)ヤクルト本社製)15mlを加え、スターラーで攪拌しながら50℃で5時間反応させた。
【0013】
熱水中で酵素を失活させてから、反応液を氷冷して2層に分離させ30分間放置後、上層を除去し、残りの下層をクロロホルムで抽出してから減圧固化した。この標品5gに対してクロロホルム15mlを加えて溶解したものをシリカゲル(Silica gel 60,MERCK)を充填したカラム(Φ32mm×300mm)にアプライし、室温でクロロホルム−メタノール(4:1)を100ml/時間の流速で流して転移型ホスファチジル−L−セリンを含む画分を分取した。
【0014】
次に、動物組織からのホスファチジル−L−セリンの精製方法について説明する。動物組織(ブタ脳、ヒツジ脳、鶏肉、鶏肝臓、イワシ魚体、サバ血合肉等)を細かく切断し、200g当たり、60mlのアセトンを加え、ワーリングブレンダーでホモジナイズした。これにアセトン200mlを加え、上清を吸引濾過して除いた残渣を800mlのアセトン、400mlのエタノールで洗浄後、800mlの石油エーテルで一晩攪拌しながら脂質を抽出した。抽出物を減圧乾固し、そのうちの5gに対してクロロホルムを加えて溶解したものをシリカゲル(Silica gel 60,MERCK社製)を充填したカラム(Φ32mm×300mm)にアプライし、室温でクロロホルム−メタノール(4:1)を100ml/時間の流速で流してホスファチジル−L−セリンを含む画分を分取した。
【0015】
次に、水素添加型ホスファチジル−L−セリンの製造方法について説明する。大豆由来の転移型ホスファチジル−L−セリンをn−ヘキサン15gとエタノール3gの混合液に溶解し、ここに0.15gの10%パラジウムカーボンを加え、室温・常圧条件下で振盪しながら約5時間水素添加を行い、水素添加型ホスファチジル−L−セリンを得た。
【0016】
最後に、リゾホスファチジル−L−セリンの製造方法について説明する。
大豆由来の転移型ホスファチジル−L−セリン300mgを6ccバイアル瓶に取り、酢酸エチルを1.2ml、0.25Mリン酸ナトリウム緩衝液(pH7.4)を0.20ml、蒸留水1.2ml、ブタ脾臓ホスホリパーゼA2(11,200IU/ml,ノボ・ノルディスク社製)を0.02ml加えてよく混合し、50℃で16時間反応させた。熱湯中に20分間浸漬して酵素を失活させた後、3.0mlのアセトンで3回洗浄操作を行った後、沈殿部を回収して風乾し、リゾホスファチジル−L−セリンを得た。
【0017】
≪試験例1≫
大豆レシチンとL−セリンを原料にホスファチジル基転移反応により製造したホスファチジル−L−セリン(大豆転移PS)を食用油に溶解し、1錠当たり50mgとなるようにゼラチンカプセルに充填した。20名のボランティア(男女、24歳〜56歳)を対象に、入眠の1〜2時間前に上記ゼラチンカプセルを2錠摂取してもらい、翌朝、6項目(爽快感、便通、食欲、体温、寝付き、夢を見たかどうか)についてアンケート方式により調査した。
また、プラセボ(食用油のみを充填したゼラチンカプセル)を2錠摂取した場合にも同様のアンケート調査を行った。結果を表1に示す。
【0018】
【表1】

Figure 0004344039
【0019】
表1に示すように、ホスファチジル−L−セリンの投与群は、爽快感、便通、食欲、体温、寝付きについては、プラセボ投与群と変わらなかったが、夢見については有意に向上したことが認識された。
【0020】
≪試験例2≫
事前のアンケートにより夢をあまり見ないと申告した20名のボランティア(男女、24歳〜56歳)を対象に、入眠の1〜2時間前に試験例1で用いたホスファチジル−L−セリン入りゼラチンカプセル又はプラセボ(食用油のみを充填したゼラチンカプセル)を投与し、翌朝、覚醒直後に夢を見たかどうかを調査した。
試験は2週間にわたって行い、入眠の1〜2時間前に、最初の1週間はプラセボを2錠経口投与し、翌週は、ホスファチジル−L−セリン入りゼラチンカプセルを2錠経口投与した。
結果を表2に示す
【0021】
【表2】
Figure 0004344039
【0022】
表2に示すように、ホスファチジル−L−セリンの投与週は、プラセボ投与週と比べ有意に夢見が向上することが確認された。
【0023】
実施例1(ゼラチンカプセル)
大豆転移PS(ホスファチジル−L−セリン含量40%)1,000gに中鎖脂肪酸トリグリセリド1,000gとビタミンE550gを配合してホスファチジル−L−セリン含量が50mgになるようにゼラチンカプセルを充填した。
【0024】
実施例2(栄養ドリンク)
栄養ドリンク110mlに大豆転移PS(ホスファチジル−L−セリン含量40%)250mgを分散させ、1本当たりのホスファチジル−L−セリン含量が100mgの栄養ドリンクを調製した。
【0025】
実施例3(発酵乳)
発酵乳125mlに大豆転移PS(ホスファチジル−L−セリン含量40%)250mgを乳化分散させ、1本当たりのホスファチジル−L−セリン含量が100mgの発酵乳を調製した。
【0026】
実施例4(ホスファチジル−L−セリン強化牛乳)
牛乳180mlに大豆転移PS(ホスファチジル−L−セリン含量40%)250mgを乳化分散させ、1本当たりのホスファチジル−L−セリン含量が100mgのホスファチジル−L−セリン強化牛乳を調製した。
【0027】
実施例5(キャラメル)
加熱融解したキャラメル90gに大豆転移PS(ホスファチジル−L−セリン含量40%)10gを加え、よく混合してから冷却し、一粒(2.5g)中に100mgのホスファチジル−L−セリンを含むキャラメルを調製した。
【0028】
【発明の効果】
本発明のホスファチジル−L−セリンを有効成分とする夢見促進剤によれば、入眠前に摂取することにより夢見頻度を高めることができる。また、覚醒時に睡眠中の夢の認識を高めることができる。本発明の夢見促進剤は、安全性に問題もなく扱いやすいものであるから、各種食品に含有させて用いることができる。更に、本発明の夢見促進剤は、夢見の頻度を向上させることが出来るため、精神科治療等の医学・心理学分野における有効な利用が図れるとともに、娯楽的利用からも極めて優れたものである。[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a dream promoting agent capable of increasing the frequency of dreaming by ingesting before falling asleep and enhancing the recognition of a dream during sleep when awakened.
[0002]
[Prior art]
It's fun to have a fantastic dream, but, as represented by the discovery of the benzene ring by Kekure, it is linked to inventions and discoveries based on dreams, and examples that make use of dreams for artistic creation There are many. Dreams are considered to be involved in memory processing, and dream control is considered to be a meaningful technology not only for mood changes and creativity stimulation, but also for information processing in the brain.
[0003]
Conventionally, by giving sensual stimuli such as vision and hearing to a person in REM sleep state, it is possible to have a dream according to the stimulus, so that the content of the dream can be expressed by stimulating during REM sleep. A control device (Japanese Patent Laid-Open No. Sho 56-13955) and computer software therefor have been devised.
However, this requires that a device for stimulating during sleep needs to be attached to the body, which is not always a satisfactory method. Furthermore, no method has yet been provided to increase the frequency of dreaming.
Moreover, in order to stimulate creativity through dreams, it is necessary to remember dreams at awakening, but no means for achieving such a purpose is known.
[0004]
[Problem to be Solved by the Invention]
As described above, as for the means for promoting the dream, there has been no report that has been reported so far, although there is a high demand, and a means for promoting the dream and remembering the dream at the time of awakening is desired. It was rare.
As a result of diligent research, the present inventors have found that phosphatidyl-L-serine can be preliminarily administered before falling asleep, thereby promoting dreaming and being able to remember a dream upon awakening, leading to the present invention. It was.
In addition, phosphatidyl-L-serine itself is widely distributed in the living world as a phospholipid containing amino acids (Iwanami Biology Dictionary).
[0005]
[Means for Solving the Problems]
The dream accelerator of the invention according to claim 1 comprises phosphatidyl-L-serine or a salt thereof as an active ingredient. The dream promoting agent of the invention according to claim 2 comprises transfer phosphatidyl-L-serine derived from soybean lecithin or a salt thereof as an active ingredient .
[0006]
DETAILED DESCRIPTION OF THE INVENTION
The dream promoting agent of the present invention is capable of promoting dreaming and recognizing dreaming at the time of awakening by administering phosphatidyl-L-serine or a salt thereof in advance to sleep on a subject.
[0007]
The phosphatidyl-L-serine or salt thereof of the present invention may be obtained by any method, and the production method is not particularly limited. For example, soybean lecithin and rapeseed lecithin that can be provided in large quantities and at low cost Alternatively, phosphatidyl-L-serine may be extracted from egg yolk lecithin or the like, or transferred phosphatidyl-L-serine obtained by phosphatidyl group transfer reaction with phospholipase D can be used as a raw material.
[0008]
Further, phosphatidyl-L-serine derived from livestock and fishery products such as cattle, pigs, sheep, chickens and fish, or from microorganisms such as yeast can be used. Further, phosphatidyl-L-serine extracted from them, phosphatidyl-L-serine obtained by subjecting transferred phosphatidyl-L-serine to hydrogenation treatment, transferred phosphatidyl-L-serine, or hydrogenated phosphatidyl-L- Lyso-type phosphatidyl-L-serine from which the fatty acid chain at the 1- or 2-position of serine is removed can also be used.
[0009]
Moreover, what combined these 1 type (s) or 2 or more types may be used.
The phosphatidyl-L-serine is preferably subjected to an appropriate purification treatment step and used without impurities. However, unless there is a problem that impedes its effect, it contains impurities from the raw materials and production steps. It may be used as it is.
The salt of phosphatidyl-L-serine of the present invention is not particularly limited as long as it is in the form of a salt that can maintain safety, and specifically includes sodium salt, potassium salt, magnesium salt, ammonium salt, etc. Sodium salt and potassium salt are preferred.
[0010]
Administration of phosphatidyl-L-serine or a salt thereof is effective for oral administration and intravenous administration, but is preferably administered 1 to 2 hours before sleep. The dose may be about 100 to 300 mg per day per adult, but is not limited to this range due to individual differences.
In addition, for oral administration, capsules, tablets or granules that are easy to use, mixed with other lipids, sugars, proteins, vitamins, food extracts and other excipients to improve ease of handling, storage, sensory characteristics, etc. What was processed into can be used.
[0011]
Furthermore, since phosphatidyl-L-serine or a salt thereof has no problem in terms of safety, various foods and drinks to be taken daily, for example, beverages (tea, coffee, tea, cocoa, herbal tea, soft drink, fruit juice, etc. ), Confectionery (biscuits, chocolate, strawberries, gums, etc.), dairy products (lactic acid bacteria beverages, fermented milk, cheese, ice cream, etc.) or other breads, cooked rice, noodles, etc. Can do.
In addition, after administration of phosphatidyl-L-serine or a salt thereof, giving a visual stimulus (for example, an image or a picture) before falling asleep or giving an auditory stimulus after falling asleep further enhances the effect of the present invention. It is effective.
[0012]
The manufacture example of the phosphatidyl-L-serine used by this invention is shown.
First, a method for producing soybean-derived transferred phosphatidyl-L-serine will be described. 50 g of soybean lecithin (PC80, BOLEC, Croklaan bc, The Netherlands) was placed in a 300 cc vial, and 60 ml of ethyl acetate was added and dissolved. After adding and mixing 50 ml of L-serine solution (0.50 g / ml) dissolved in 0.1 M sodium phosphate buffer (pH 7.0), actinomycete-derived phospholipase D solution (500 u / ml, strain) 15 ml of Yakult Honsha) was added, and the mixture was reacted at 50 ° C. for 5 hours while stirring with a stirrer.
[0013]
After inactivating the enzyme in hot water, the reaction solution was ice-cooled, separated into two layers, allowed to stand for 30 minutes, the upper layer was removed, and the remaining lower layer was extracted with chloroform and then solidified under reduced pressure. A solution prepared by adding 15 ml of chloroform to 5 g of this sample was applied to a column (Φ32 mm × 300 mm) packed with silica gel (Silica gel 60, MERCK), and 100 ml / ml of chloroform-methanol (4: 1) was added at room temperature. The fraction containing transferred phosphatidyl-L-serine was collected by flowing at a flow rate of time.
[0014]
Next, a method for purifying phosphatidyl-L-serine from animal tissues will be described. Animal tissues (pig brain, sheep brain, chicken, chicken liver, sardine fish, mackerel blood, etc.) were finely cut, 60 ml of acetone was added per 200 g, and homogenized with a Waring blender. 200 ml of acetone was added thereto, and the supernatant was removed by suction filtration. The residue was washed with 800 ml of acetone and 400 ml of ethanol, and lipid was extracted with stirring with 800 ml of petroleum ether overnight. The extract was dried under reduced pressure, and 5 g of the extract was dissolved in chloroform and applied to a column (Φ32 mm × 300 mm) packed with silica gel (Silica gel 60, manufactured by MERCK), and chloroform-methanol at room temperature. (4: 1) was allowed to flow at a flow rate of 100 ml / hour, and a fraction containing phosphatidyl-L-serine was collected.
[0015]
Next, a method for producing hydrogenated phosphatidyl-L-serine will be described. Dissolved phosphatidyl-L-serine derived from soybeans is dissolved in a mixed solution of 15 g of n-hexane and 3 g of ethanol, 0.15 g of 10% palladium carbon is added thereto, and the mixture is shaken at room temperature and atmospheric pressure for about 5 hours. Hydrogenation was performed to obtain hydrogenated phosphatidyl-L-serine.
[0016]
Finally, a method for producing lysophosphatidyl-L-serine will be described.
300 mg of transfer-type phosphatidyl-L-serine derived from soybean is taken in a 6 cc vial, 1.2 ml of ethyl acetate, 0.20 ml of 0.25 M sodium phosphate buffer (pH 7.4), 1.2 ml of distilled water, porcine spleen phospholipase A 2 0.02 ml (11,200 IU / ml, manufactured by Novo Nordisk) was added and mixed well, and reacted at 50 ° C. for 16 hours. After immersing in hot water for 20 minutes to inactivate the enzyme, washing operation was performed 3 times with 3.0 ml of acetone, and then the precipitate was recovered and air-dried to obtain lysophosphatidyl-L-serine.
[0017]
<< Test Example 1 >>
Phosphatidyl-L-serine (soybean transfer PS) produced by soy lecithin and L-serine as raw materials by phosphatidyl group transfer reaction was dissolved in edible oil and filled into gelatin capsules at 50 mg per tablet. Twenty volunteers (male and female, 24 to 56 years old) took 2 tablets of the above gelatin capsules 1 to 2 hours before falling asleep, and the next morning, 6 items (exhilaration, bowel movement, appetite, body temperature, Whether they had fallen asleep or had a dream).
A similar questionnaire survey was conducted when two tablets of placebo (gelatin capsules filled with edible oil only) were ingested. The results are shown in Table 1.
[0018]
[Table 1]
Figure 0004344039
[0019]
As shown in Table 1, the phosphatidyl-L-serine administration group was not different from the placebo administration group in terms of exhilaration, bowel movement, appetite, body temperature, and sleep, but it was recognized that the dream was significantly improved. It was.
[0020]
<< Test Example 2 >>
The phosphatidyl-L-serine-containing gelatin used in Test Example 1 to 2 hours before falling asleep, targeting 20 volunteers (men and women, 24 to 56 years old) who reported that they did not have many dreams through a prior questionnaire Capsules or placebos (gelatin capsules filled with edible oil only) were administered, and the next morning, whether or not they had a dream immediately after waking was investigated.
The test was conducted over 2 weeks, and two placebos were orally administered for the first week 1-2 hours before falling asleep, and two gelatin capsules containing phosphatidyl-L-serine were orally administered the next week.
The results are shown in Table 2. [0021]
[Table 2]
Figure 0004344039
[0022]
As shown in Table 2, it was confirmed that the dream of phosphatidyl-L-serine was significantly improved compared to the placebo administration week.
[0023]
Example 1 (gelatin capsule)
1,000 g of medium chain fatty acid triglyceride and 550 g of vitamin E were mixed with 1,000 g of soybean transfer PS (phosphatidyl-L-serine content 40%), and gelatin capsules were filled so that the phosphatidyl-L-serine content was 50 mg.
[0024]
Example 2 (Nutritional drink)
Soybean transfer PS (phosphatidyl-L-serine content 40%) 250 mg was dispersed in 110 ml of nutritional drink to prepare a nutritional drink having a phosphatidyl-L-serine content of 100 mg.
[0025]
Example 3 (fermented milk)
Soybean transfer PS (phosphatidyl-L-serine content 40%) 250 mg was emulsified and dispersed in 125 ml of fermented milk to prepare fermented milk having a phosphatidyl-L-serine content of 100 mg.
[0026]
Example 4 (phosphatidyl-L-serine enriched milk)
250 ml of soybean transfer PS (phosphatidyl-L-serine content 40%) was emulsified and dispersed in 180 ml of milk to prepare phosphatidyl-L-serine-enriched milk having a phosphatidyl-L-serine content of 100 mg.
[0027]
Example 5 (caramel)
Add 90g of soy transfer PS (phosphatidyl-L-serine content 40%) to 90g of heat-melted caramel, mix well, cool, and add caramel containing 100mg of phosphatidyl-L-serine in one grain (2.5g). Prepared.
[0028]
【The invention's effect】
According to the dream-promoting agent comprising phosphatidyl-L-serine of the present invention as an active ingredient, the frequency of dreaming can be increased by taking it before falling asleep. Moreover, the recognition of the dream during sleep at the time of awakening can be improved. Since the dream promoter of the present invention is easy to handle without safety problems, it can be used in various foods. Furthermore, since the dream-promoting agent of the present invention can improve the frequency of dreaming, it can be effectively used in the medical / psychological fields such as psychiatric treatment, and is also extremely excellent in recreational use. .

Claims (2)

ホスファチジル−L−セリン又はその塩を有効成分とする夢見促進剤。  A dream promoting agent comprising phosphatidyl-L-serine or a salt thereof as an active ingredient. ホスファチジル−L−セリンが、大豆レシチン由来の転移型ホスファチジル−L−セリンである請求項1の夢見促進剤The dream promoter according to claim 1, wherein the phosphatidyl-L-serine is a transferred phosphatidyl-L-serine derived from soybean lecithin.
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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63209560A (en) * 1987-02-25 1988-08-31 Nippon Oil & Fats Co Ltd Sleep rhythm regulating food
JPS63208524A (en) * 1987-02-25 1988-08-30 Nippon Oil & Fats Co Ltd Sleep rhythm improver
JPH03178931A (en) * 1989-09-08 1991-08-02 Nippon Oil & Fats Co Ltd Sleep enhancing agent
JP3143972B2 (en) * 1991-08-01 2001-03-07 日本油脂株式会社 Non-REM sleep enhancer
JPH0717855A (en) * 1992-09-02 1995-01-20 Maruha Corp Cerebral function-improving composition, learning ability-enhancing agent, mnemonic agent, dementia-preventing agent, dementia-treating agent, or functional food having cerebral function-improving effect
FR2762993B1 (en) * 1997-05-06 1999-08-13 Inst Rech Biolog Sa NEW USE OF PHOSPHOLIPIDS OF ANIMAL ORIGIN IN THERAPEUTICS AND / OR DIETETICS
JPH1180009A (en) * 1997-09-12 1999-03-23 Seiwa Yakuhin Kk Agent for improving brain function and agent for preventing lowering of brain function

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