JP2006328056A - Obesity-preventing agent - Google Patents
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本発明はアブラナ科植物およびその成分を摂取することにより、肥満を予防または改善する肥満防止剤に係り、特に生体内の脂質代謝を改善して生体内脂肪を減少させ、体重を減少させる肥満防止剤に関する。 The present invention relates to an anti-obesity agent that prevents or ameliorates obesity by ingesting a cruciferous plant and its components, and in particular, prevents obesity by improving in vivo lipid metabolism to reduce in vivo fat and reduce body weight. It relates to the agent.
現在わが国は740万人の糖尿病患者、1500万人の高血圧症および2300万人の高脂血症患者を抱え、生活習慣病全体での推定患者数は数千人に上る。これら生活習慣病の原因としては、食習慣が動物性脂肪など高カロリー摂取になっていることや、慢性的な運動不足が大きいと指摘されている。これらの生活習慣が続くことにより、体脂肪量が増大し、体重増加および肥満につながると考えられる。 Japan currently has 7.4 million diabetics, 15 million hypertension and 23 million hyperlipidemia patients, and the estimated number of patients in all lifestyle-related diseases is several thousand. As a cause of these lifestyle-related diseases, it has been pointed out that dietary habits are high calorie intake such as animal fat and chronic lack of exercise. By continuing these lifestyle habits, it is thought that the amount of body fat increases, leading to weight gain and obesity.
このような状態を放置しておくと、糖尿病や動脈硬化などを引き起こし、虚血性心疾患や脳血管障害により死に至ることもある。こうした疾患を未然に防ぐことは非常に重要である。 If such a state is left unattended, it may cause diabetes, arteriosclerosis, etc., and may be fatal due to ischemic heart disease or cerebrovascular disorder. It is very important to prevent such diseases.
一般に肥満の予防・改善には、適度な運動と摂取カロリーのコントロールが奨励されるが、現代の多忙な生活習慣ではなかなか思うような運動ができないのが現状である。そのため、容易な経口摂取により肥満を予防・改善する素材の開発が望まれていた。 In general, moderate exercise and control of calorie intake are encouraged for the prevention and improvement of obesity, but the current situation is that it is difficult to exercise as expected in modern busy lifestyles. Therefore, it has been desired to develop a material that can prevent or improve obesity by easy oral intake.
ダイエット素材として一般に用いられているものに、食物繊維が挙げられる。食物繊維は食物の腸内滞留時間を短縮させ、さらに糖質の吸収を抑制し血糖値の上昇を穏やかにする。結果として、糖質の中性脂肪への変換を促進するインシュリン分泌を低減させ、脂肪の蓄積を抑制する。これらの効果を期待した素材として、グルコマンナン(特開2002−186469)、プリックリィペアカクタス(特開2003−70444)等が考案されている。 A dietary fiber is mentioned as what is generally used as a diet material. Dietary fiber shortens the intestinal residence time of food, further suppresses carbohydrate absorption and moderates the increase in blood sugar level. As a result, insulin secretion that promotes conversion of carbohydrates to neutral fat is reduced, and fat accumulation is suppressed. Glucomannan (Japanese Patent Laid-Open No. 2002-186469), Prickly Pair Cactus (Japanese Patent Laid-Open No. 2003-70444) and the like have been devised as materials that expect these effects.
また、脂肪の消化吸収に必須の酵素であるリパーゼの活性を阻害する素材として、柑橘類(特開2005−40107)、カトゥアバ(特開2004−292368)等が考案されている。 In addition, citrus fruits (Japanese Patent Laid-Open No. 2005-40107), Katuava (Japanese Patent Laid-Open No. 2004-292368) and the like have been devised as materials that inhibit the activity of lipase, an enzyme essential for digestion and absorption of fat.
しかし、これらの素材はいずれも糖質や脂質の消化・吸収を抑制し、体内への蓄積を防ぐものであり、吸収され、蓄積された脂肪を能動的に燃焼または排泄させるものではない。 However, all of these materials suppress digestion and absorption of carbohydrates and lipids and prevent accumulation in the body, and do not actively burn or excrete absorbed and accumulated fat.
そこで、日常的な食習慣の中で無理なく継続的に摂取でき、能動的に体内の脂肪を減少
させ、体重を健康的に低減させる素材が望まれていた。
Therefore, there has been a demand for a material that can be continuously consumed without difficulty in daily eating habits, actively reduces fat in the body, and reduces body weight healthily.
一般に、体内の脂肪細胞が肥大してくるとぺプチドホルモンの一種のレプチンが分泌され、脳の視床下部にある摂食中枢に作用し食欲を抑制する一方、褐色脂肪細胞にも作用しエネルギー代謝の増大を促すと考えられている。肥満の予防・改善には、レプチンやその他の脂質代謝ホルモンや褐色脂肪細胞の働きの制御が重要である。 In general, when fat cells in the body become enlarged, a peptide hormone, leptin, is secreted and acts on the feeding center in the hypothalamus of the brain to suppress appetite, while also acting on brown adipocytes and energy metabolism It is thought to promote the increase of Control of the function of leptin, other lipid-metabolizing hormones and brown adipocytes is important for the prevention and improvement of obesity.
本発明者らは鋭意研究の結果、アブラナ科植物の植物体、もしくはその抽出物に肥満予防・改善効果、特に生体内の脂質代謝を改善し、体重を低減させる効果があることを見出し、本発明を完成するに至った。
本発明の課題は生体内の脂質代謝を改善し、蓄積された脂肪を能動的に減少させて健康的に体重を減少させ、上述の公知技術に存する欠点を改良した肥満防止剤を提供することにある。 It is an object of the present invention to provide an anti-obesity agent that improves lipid metabolism in vivo, actively reduces accumulated fat to reduce weight healthyly, and improves the above-mentioned drawbacks of the known techniques. It is in.
上述の目的を達成するため、本発明の肥満防止剤によれば、アブラナ科植物の植物体またその抽出物を有効成分として含有し、生体内の脂質代謝を改善し、あるいは脂肪の分解を阻害して吸収を抑制して蓄積された脂肪を能動的に減少させ、健康的に体重を減少させることを特徴とする。 In order to achieve the above-described object, the antiobesity agent of the present invention contains a cruciferous plant or an extract thereof as an active ingredient to improve lipid metabolism in vivo or inhibit fat degradation. It is characterized by actively reducing the accumulated fat by suppressing absorption and healthy weight loss.
本発明はアブラナ科植物の植物体あるいはその抽出物を有効成分として含有し、これを食品として、あるいは医薬品や医薬部外品として摂取するととにより生体内の脂質代謝を改善し、健康的に体重を低減させるという効果を奏する。 The present invention contains a cruciferous plant or an extract thereof as an active ingredient, and improves the lipid metabolism in the living body by ingesting it as a food or as a pharmaceutical product or quasi-drug, so that the body weight is healthy. There is an effect of reducing.
以下、本発明を具体的に詳述する。 Hereinafter, the present invention will be described in detail.
本発明では用いられるアブラナ科植物は、本わさび、西洋わさび、キャベツ、クレソン、芽キャベツ、カリフラワー、大根、からみ大根、ナタネ、ブロッコリー、タカナ、カラシナ、カブ、ハクサイが挙げられる。その中でも本わさびが好ましく、さらに本わさびの葉が特に好ましい。本発明においては、これらアブラナ科植物は単独で、あるいは複数種組み合わせて用いる。 Examples of the cruciferous plant used in the present invention include horseradish, horseradish, cabbage, watercress, Brussels sprouts, cauliflower, radish, leach radish, rapeseed, broccoli, Takana, mustard, turnip, Chinese cabbage. Among these, this wasabi is preferable, and this wasabi leaf is particularly preferable. In the present invention, these cruciferous plants are used singly or in combination.
上述のアブラナ科植物の有効成分は、植物体の粉砕またはすりおろし等の物理的処理手段により、あるいは水、メタノール、エタノール、アセトン、酢酸エチル、ジエチルエーテル、ジクロロメタン、ジクロロエタン等の溶媒抽出処理手段により、さらには、熱風乾燥、凍結乾燥等の乾燥処理手段により、またはこれらの処理を組み合わせることにより得られる。 The active ingredients of the above cruciferous plants are obtained by physical treatment means such as pulverization or grated plant bodies, or by solvent extraction treatment means such as water, methanol, ethanol, acetone, ethyl acetate, diethyl ether, dichloromethane, dichloroethane and the like. Further, it can be obtained by a drying treatment means such as hot air drying, freeze drying or a combination of these treatments.
本発明に用いられるアブラナ科植物の有効成分は、アピゲニンやルテオリン、ケンフェロールといったフラボノイド類やそれらの配糖体・多量体、フェルラ酸やシナピン酸といったフェニルプロパノイド類やそれらの配糖体・多量体、その他のポリフェノール類を含む。 The active ingredients of the cruciferous plants used in the present invention are flavonoids such as apigenin, luteolin, kaempferol and their glycosides / multimers, phenylpropanoids such as ferulic acid and sinapinic acid, and their glycosides / multiples. Body, including other polyphenols.
ポリフェノール類以外の有効成分としては、イソチオシアネート類、具体的には、アリルイソチオシアネート、第2級ブチルイソチオシアネート、3−ブテニルイソチオシアネート、4−ペンテニルイソチオシアネート、5−ヘキセニルイソチオシアネート、5−メチルチオペンチルイソチオシアネート、6−メチルチオヘキシルイソチオシアネート、7−メチルチオヘプチルイソチオシアネート、8−メチルチオオクチルイソチオシアネート、4−メチルスルフィニルブチルイソチオシアネート、5−メチルスルフィニルペンチルイソチオシアネート、6−メチルスルフィニルヘキシルイソチオシアネート、7−メチルスルフィニルヘプチルイソチオシアネート、8−メチルスルフィニルオクチルイソチオシアネートである。 Active ingredients other than polyphenols include isothiocyanates, specifically allyl isothiocyanate, secondary butyl isothiocyanate, 3-butenyl isothiocyanate, 4-pentenyl isothiocyanate, 5-hexenyl isothiocyanate, 5- Methylthiopentyl isothiocyanate, 6-methylthiohexyl isothiocyanate, 7-methylthioheptyl isothiocyanate, 8-methylthiooctyl isothiocyanate, 4-methylsulfinyl butyl isothiocyanate, 5-methylsulfinyl pentyl isothiocyanate, 6-methylsulfinyl hexyl isothiocyanate, 7-methylsulfinyl heptyl isothiocyanate, 8-methylsulfinyl octyl isothiocyanate.
さらに、有効成分として、5−メトキシーインドール−3−アセトニトリル等のインドール類、クロロフィル等を含有する。 Further, as active ingredients, it contains indoles such as 5-methoxy-indole-3-acetonitrile, chlorophyll and the like.
本発明の肥満防止剤は、それ単独で摂取することも可能であるが、各種飲食品あるいは医薬品に添加して使用することもできる。具体的には、清涼飲料水、茶飲料、ドリンク剤、アルコール飲料等の液体食品、菓子、パン類、麺類、調味料等の固形食品、粉末状、顆粒状、カプセル状、錠剤等の医薬品・医薬部外品等に添加することができる。 The anti-obesity agent of the present invention can be taken alone, but can also be used by adding it to various foods and beverages or medicines. Specifically, liquid foods such as soft drinks, tea beverages, drinks, alcoholic beverages, solid foods such as confectionery, breads, noodles and seasonings, pharmaceuticals such as powders, granules, capsules, tablets, etc. It can be added to quasi drugs.
本わさび葉に含まれるポリフェノール類の抽出
本わさび葉抽出物の調製を行った。細かく裁断した本わさびは4kgに50%エタノール16kgを加え、攪拌しつつ1時間抽出を行った。抽出液をろ過し、エバポレーターで濃縮後凍結乾燥したものをフードミルで粉砕し、70gの緑色粉末を得た。これを本わさび葉抽出物として試験に供した。
Extraction of polyphenols contained in this wasabi leaf This wasabi leaf extract was prepared. The wasabi was cut into 4 kg, 16 kg of 50% ethanol was added to 4 kg, and extracted for 1 hour with stirring. The extract was filtered, concentrated with an evaporator and freeze-dried, and pulverized with a food mill to obtain 70 g of a green powder. This was subjected to the test as this wasabi leaf extract.
本わさび葉抽出物を高速液体クロマトグラフィー(HPLC)に供した結果を図1に示す。図1に示されるように、本わさび葉抽出物から複数種のフラボノイド類とフェニルプロパノイド類が検出された。 The results of subjecting this wasabi leaf extract to high performance liquid chromatography (HPLC) are shown in FIG. As shown in FIG. 1, plural kinds of flavonoids and phenylpropanoids were detected from this wasabi leaf extract.
本わさび根茎に含まれるイソチオシアネート類の抽出
本わさび根茎抽出物の調製を行った。すりおろした本わさび根茎1kgをステンレス製の密封容器内に入れ、25℃で3時間保温し、イソチオシアネート類を発生させた。その後、この容器内の空気を真空ポンプで吸引しながら、1時間辛味成分を除去した。辛味を除去した本わさび根茎に50%エタノール3リットルを加え、1時間室温で攪拌抽出した後、加圧ろ過器でろ過し、抽出液を得た。この抽出液をエバポレーターで濃縮後、凍結乾燥したものをフードミルにて粉砕し、55gの茶褐色粉末を得た。これを本わさび根茎抽出物として試験に供した。
Extraction of isothiocyanates contained in this wasabi rhizome This wasabi rhizome extract was prepared. 1 kg of grated wasabi rhizome was put in a stainless steel sealed container and kept at 25 ° C. for 3 hours to generate isothiocyanates. Thereafter, the pungent component was removed for 1 hour while sucking the air in the container with a vacuum pump. 3 liters of 50% ethanol was added to this wasabi rhizome from which the pungent taste was removed, followed by stirring and extraction at room temperature for 1 hour, followed by filtration with a pressure filter to obtain an extract. The extract was concentrated with an evaporator, and then freeze-dried and pulverized with a food mill to obtain 55 g of a brown powder. This was subjected to the test as the wasabi rhizome extract.
本わさび葉抽出物をマススペクトルガスクロマトグラフィー(GCMS)に供した結果を図2に示す。図2に示されるように、本わさび葉抽出物から複数種のイソチオシアネート類が複検出された。 The results of subjecting this wasabi leaf extract to mass spectral gas chromatography (GCMS) are shown in FIG. As shown in FIG. 2, multiple types of isothiocyanates were detected from this wasabi leaf extract.
食事誘発肥満ラットを用いた抗肥満作用の検討
実施例1に記載の方法で本わさび葉抽出物を得、また、実施例2に記載の方法で本わさび根茎抽出物を得た。
Examination of anti-obesity effect using diet-induced obese rats This wasabi leaf extract was obtained by the method described in Example 1, and this wasabi rhizome extract was obtained by the method described in Example 2.
Std Wister系ラット(オス、6齢週)30匹をステンレス製個別ケージで28日間飼育した。動物室の温度は24±1℃に保ち、湿度50%、明期08:00−20:00、暗期20:00−08:00で飼育した。
Thirty Std Wister rats (male,
ラットは平均体重が均等になるように高脂肪食群(対照群)、実施例1の本わさび葉抽出物を5%含有した高脂肪食群(実施例1群)、実施例2の本わさび根茎抽出物を5%含有した高脂肪食群(実施例2群)に分け、飼料組成は表1に示した。飼料摂取量は全ての群で等しくなるように、制限摂取させた。 Rats had a high fat diet group (control group) so that the average body weight was uniform, a high fat diet group (Example 1 group) containing 5% of this wasabi leaf extract of Example 1, and this wasabi of Example 2. The feed composition was shown in Table 1 by dividing into a high fat diet group (Example 2 group) containing 5% rhizome extract. Feed intake was limited so that the feed intake was the same in all groups.
体重および飼料摂取量は週に3回測定し、水は自由摂取とした。飼育28日目に一晩絶食後、エーテル麻酔下で断頭により屠殺した。 Body weight and feed intake were measured three times a week and water was ad libitum. On the 28th day after breeding, the animals were fasted overnight and then sacrificed by decapitation under ether anesthesia.
試験に供したラットの解剖を行った。膵臓、腎臓、肝臓、ひ腹筋、鼠径周囲脂肪組織、腎周囲脂肪組織、副精巣周囲脂肪組織、褐色脂肪組織を摘出し、秤量した。肝臓の一部は中性緩衝ホルマリン溶液に入れ病理標本とした。他の臓器はすばやく液体窒素で凍結し、血清とともに−80℃で保存した。 Rats subjected to the test were dissected. The pancreas, kidney, liver, gastrocnemius muscle, inguinal adipose tissue, perirenal adipose tissue, accessory epididymal adipose tissue, and brown adipose tissue were removed and weighed. A part of the liver was placed in a neutral buffered formalin solution to prepare a pathological specimen. Other organs were quickly frozen in liquid nitrogen and stored at −80 ° C. with serum.
摘出した肝臓の中性脂質を測定した。肝臓2.5gにFolch液を約15m添加し、ホモジネートした。よく混濁したホモジ液を50mlメスフラスコで1日抽出した。抽出後、Folch液でメスアップし、混合した後、No.2のろ紙でろ過し試料とした。対象群は150μl、他の群は120μlを試験管に入れ、室温で放置して溶媒を揮発させた。 Neutral lipids of the extracted liver were measured. About 15 m of Folch's solution was added to 2.5 g of liver and homogenized. A well-turbid homogen solution was extracted in a 50 ml volumetric flask for one day. After extraction, the volume was made up with a Folch solution, mixed, and then filtered through a No. 2 filter paper to prepare a sample. 150 μl of the subject group and 120 μl of the other group were placed in a test tube and left at room temperature to evaporate the solvent.
肝臓中のコレステロール、トリアシルグリセロール、およびリン脂質濃度を、それぞれコレステロール CIIキットワコー、トリグリセライドG−テストワコー、リン脂質テストワコーの各キットにて測定した。 Cholesterol cholesterol, triacylglycerol, and phospholipid concentrations were measured with cholesterol CII kit Wako, triglyceride G-test Wako, and phospholipid test Wako kits, respectively.
血清中のコレステロール、トリアシルグリセロール、リン脂質、尿素窒素、クレアチニン、遊離脂肪酸、GOT、GPTの各濃度を、それぞれコレステロールCIIキットワコー、トリグリセライドG−テストワコー、リン脂質テストワコー、尿素窒素Bテストワコー、クレアチニンーテストワコー、NEFA−Cテストワコー、GOT−UVテストワコー、GPT−UVテストワコーの各キットにて測定した。 Cholesterol CII Kit Wako, Triglyceride G-Test Wako, Phospholipid Test Wako, Urea Nitrogen B Test Wako, each concentration of serum cholesterol, triacylglycerol, phospholipid, urea nitrogen, creatinine, free fatty acid, GOT, GPT , Creatinine-test Wako, NEFA-C test Wako, GOT-UV test Wako, GPT-UV test Wako.
血清中のアディポネクチン、レプチン、およびTNF−αの濃度を、それぞれMouse/rat adiponectine ELISA kit, Rat Leptin ELISA kit, Yanaihara, Rat TNF−α ELISA kit, TFBの各キットにて測定した。 The concentrations of adiponectin, leptin, and TNF-α in the serum were measured using the Mouse / rat adiponectine ELISA kit, Rat Leptin ELISA kit, Yanaihara, Rat TNF-α ELISA kit, and TFB, respectively.
褐色脂肪組織のβ3−アドレナリンレセプター(以下、β3−ARと記す)、ペルオキシゾーム増殖促進受容体γ(以下、PPARγと記す)、CAAT/エンハンサー結合タンパク質α(以下、C/EBPαと記す)、PPARγコアクチベーター1(PGC−1)、中鎖アシルCoAデヒドロゲナーゼ(以下、MCADと記す)のmRNA発現量と、白色脂肪組織のMCADのmRNA発現量を、リアルタイムPCR(ABI PRISM (R)7000 Sequence Detection System)で測定した。 Brown adipose tissue β3-adrenergic receptor (hereinafter referred to as β3-AR), peroxisome growth promoting receptor γ (hereinafter referred to as PPARγ), CAAT / enhancer binding protein α (hereinafter referred to as C / EBPα), PPARγ Coactivator 1 (PGC-1), medium chain acyl CoA dehydrogenase (hereinafter referred to as “MCAD”) mRNA expression level and white adipose tissue MCAD mRNA expression level were measured using real-time PCR (ABI PRISM® 7000 Sequence Detection). System).
次に結果を示す。摂取制限のため、飼育期間中の摂食量は3群間に差は見られなかった。実施例1群および実施例2群の最終体重は対照群と比較して有意に少なかった。(表2) The results are shown below. Due to intake restrictions, there was no difference in the amount of food consumed during the breeding period among the three groups. The final body weight of the Example 1 group and the Example 2 group was significantly less than that of the control group. (Table 2)
膵臓、腎臓、肝臓、ひ腹筋重量は3群間で有意差はなかった。腎周囲白色脂肪組織、副精巣周囲白色脂肪組織重量に3群間で有意差はなかったが、実施例1群および実施例2群の鼠径周囲白色脂肪組織は対照群と比較して減少傾向にあった。実施例1群および実施例2群の褐色脂肪組織は対照群と比較して有意に増加した。(表3)。 The pancreas, kidney, liver and gastrocnemius muscle weights were not significantly different among the three groups. There was no significant difference between the three groups in the weight of the white adipose tissue around the kidney and the white adipose tissue around the accessory testis. there were. The brown adipose tissue of Example 1 group and Example 2 group increased significantly compared with the control group. (Table 3).
血清中の総コレステロール、トリアシルグリセロール、リン脂質、遊離脂肪酸、クレアチニン、尿素窒素、GPT、GOT濃度は3群間で有意差はなかった。実施例1群の肝臓TBARS、腎臓TBARS濃度は、対照群と比較して減少傾向にあった。(表4) Serum total cholesterol, triacylglycerol, phospholipid, free fatty acid, creatinine, urea nitrogen, GPT, and GOT concentrations were not significantly different among the three groups. The liver TBARS and kidney TBARS concentrations in the Example 1 group tended to decrease compared to the control group. (Table 4)
血清中のTNF−α、アディポネクチンの濃度は3群間で大差はなかったが、実施例1群および実施例2群のレプチンは増加傾向にあった。(表5) The concentrations of TNF-α and adiponectin in the serum were not significantly different among the three groups, but the leptin in the Example 1 group and the Example 2 group tended to increase. (Table 5)
褐色脂肪組織のβ3−AR(図3)、PPARγ(図4)、PGC−1(図5)、MCAD(図6)が有意に増加し、C/EBPα(図7)が増加傾向にあった。白色脂肪組織のMCAD(図8)は増加傾向にあった。 Brown adipose tissue β3-AR (FIG. 3), PPARγ (FIG. 4), PGC-1 (FIG. 5), MCAD (FIG. 6) increased significantly, and C / EBPα (FIG. 7) tended to increase. . The white adipose tissue MCAD (FIG. 8) tended to increase.
本試験で用いた食事誘発肥満ラットは、生活習慣によって誘発されるヒト内臓型肥満と類似しており、本わさび葉が生活習慣病による肥満を予防・改善する肥満予防食品として有効であることが確認された。 The diet-induced obese rats used in this study are similar to human visceral obesity induced by lifestyle habits, and this wasabi leaf is effective as an obesity-preventing food that prevents and ameliorates obesity caused by lifestyle-related diseases confirmed.
インヴィトロでのリパーゼ阻害活性の測定を行った。本わさび葉、西洋わさび葉、本わさび根茎各2gをそれぞれ凍結乾燥し、粉砕した。 In vitro lipase inhibitory activity was measured. 2 g each of this wasabi leaf, horseradish leaf, and wasabi rhizome were lyophilized and ground.
上記試料にヘキサン10mlを加え、ガラス・ポリトロンホモジナイザーでホモジネートした。これを室温で24時間放置した。これをろ過後、濃縮しテトラヒドロフランを10ml加え脂溶性画分とした。 10 ml of hexane was added to the above sample and homogenized with a glass / polytron homogenizer. This was left at room temperature for 24 hours. This was filtered and concentrated, and 10 ml of tetrahydrofuran was added to obtain a fat-soluble fraction.
ろ過後の残渣にテトラヒドロフランを10ml加えて攪拌し、さらに24時間抽出し、この上清を水溶性画分とした。 To the residue after filtration, 10 ml of tetrahydrofuran was added and stirred, followed by extraction for 24 hours, and this supernatant was used as a water-soluble fraction.
上記試料0.01mgを含む100μlテトラヒドロフランにテトラヒドロフラン85
μl、0.1M Macilvan 緩衝液PH7.0を400μl加え、小型試験管で攪拌した。
Tetrahydrofuran 85 in 100 μl tetrahydrofuran containing 0.01 mg of the above sample.
400 μl of 0.1 μl Macilvan buffer PH 7.0 was added and stirred in a small test tube.
テトラヒドロフランに溶解した0.15mM 4−methylumbelliferon oleate (4-MU oleate)を加えさらに攪拌し、プレインキュベートした0.05ml(0.05units)のPorisine pancreatic lipaseを加え、37℃で20分間加熱した後に、0.1N塩酸を加え反応を停止した。これにクエン酸緩衝液を2ml加え、PH4.3に調製した。 After adding 0.15 mM 4-methylumbelliferon oleate (4-MU oleate) dissolved in tetrahydrofuran and stirring, pre-incubated 0.05 ml (0.05 units) Polysine pancreatic lipase was added and heated at 37 ° C. for 20 minutes. The reaction was stopped by adding 0.1N hydrochloric acid. To this, 2 ml of citrate buffer was added to prepare PH 4.3.
蛍光光度計(波長450nm、励起波長320nm)にてリパーゼによる4−MUへの分解率を測定した。阻害率は対照を100%とし、IC50を算出した。阻害活性は以下の式にて算出した。 The decomposition rate to 4-MU by lipase was measured with a fluorometer (wavelength 450 nm, excitation wavelength 320 nm). For the inhibition rate, the control was 100%, and IC50 was calculated. Inhibitory activity was calculated by the following formula.
阻害率%=(対照4―MU蛍光度―試料添加時4−MU蛍光度)/対照4−MU蛍光度×100 Inhibition rate% = (control 4-MU fluorescence-sample addition 4-MU fluorescence) / control 4-MU fluorescence × 100
次に結果を示す。いずれの抽出成分もインヴィトロでのリパーゼ阻害活性は弱いながも認められた。(図9) The results are shown below. None of the extracted components had a weak lipase inhibitory activity in vitro. (Fig. 9)
以上の結果から、ラットにおける抗肥満作用は、主に褐色脂肪組織の増加が伴うエネルギー代謝の亢進によるものであり、さらに消化管内でのリパーゼ阻害作用等の効果も関与していると考えられた。 These results suggest that the anti-obesity effect in rats is mainly due to increased energy metabolism accompanied by an increase in brown adipose tissue, and that lipase inhibitory effects in the gastrointestinal tract are also involved. .
本わさび葉の肥満予防・改善作用をヒトにおいて確認した。実施例1に記載の方法にて抽出した本わさび葉抽出物150mgを封入したハードカプセルを作製した。 The effect of this wasabi leaf on obesity prevention / amelioration was confirmed in humans. A hard capsule enclosing 150 mg of this wasabi leaf extract extracted by the method described in Example 1 was prepared.
健康な男性6名に3ケ月間にわたり本わさび葉抽出物入りハードカプセルを1日3回摂取させた。 Six healthy men were ingested hard capsules with this wasabi leaf extract three times a day for three months.
次に結果を示す。本わさび葉を摂取後3ケ月目において、摂取前と比較して有意に体重が減少した。(図10)このことから、ヒトにおいても本わさび葉の摂取は体重の抑制に有効であることが確認された。 The results are shown below. At 3 months after ingesting this wasabi leaf, the body weight was significantly reduced compared to before ingestion. (FIG. 10) From this, it was confirmed that ingestion of this wasabi leaf is effective in suppressing body weight even in humans.
Claims (10)
に記載の肥満防止剤。 5. The isothiocyanate of claim 4, wherein the isothiocyanates are 4-methylsulfinyl butyl isothiocyanate, 5-methylsulfinyl pentyl isothiocyanate, 6-methylsulfinyl hexyl isothiocyanate, 7-methylsulfinyl heptyl isothiocyanate and 8-methylsulfinyl octyl isothiocyanate. Claim 4 selected from the group
The antiobesity agent described in 1.
記載の肥満防止剤。 In Claim 4, the isothiocyanates are allyl isothiocyanate, secondary butyl isothiocyanate, 3-butenyl isothiocyanate, 4-pentenyl isothiocyanate, 5-hexenyl isothiocyanate, 5-methylthiopentyl isothiocyanate, 6-methylthio. The antiobesity agent according to claim 4, selected from the group of hexyl isothiocyanate, 7-methylthioheptyl isothiocyanate and 8-methylthiooctyl isothiocyanate.
A food or drink or a pharmaceutical comprising the obesity-preventing agent according to claim 1 containing a cruciferous plant or a component thereof as a main component.
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JP2010184892A (en) * | 2009-02-12 | 2010-08-26 | Kinjirushi Kk | Medicine, quasi-drug, cosmetic, food and beverage and animal feed presenting male hormone-like action |
JP2010265233A (en) * | 2009-05-17 | 2010-11-25 | Emi Tanaka | Slimming external preparation for skin |
WO2010140271A1 (en) * | 2009-06-02 | 2010-12-09 | 金印株式会社 | Substance having relaxing activity, concentration-enhancing activity and anti-stress activity |
KR101213065B1 (en) * | 2011-02-11 | 2012-12-18 | 서울대학교산학협력단 | Food composition against obesity or pharmaceutical composition against obesity containing 4-methylsulfinyl-3-butenyl isothiocyantate, precursor and derivatives of 4-methylsulfinyl-3-butenyl isothiocyantate |
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