JP5589176B2 - 新規ペプチド分解物 - Google Patents
新規ペプチド分解物 Download PDFInfo
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- JP5589176B2 JP5589176B2 JP2008155078A JP2008155078A JP5589176B2 JP 5589176 B2 JP5589176 B2 JP 5589176B2 JP 2008155078 A JP2008155078 A JP 2008155078A JP 2008155078 A JP2008155078 A JP 2008155078A JP 5589176 B2 JP5589176 B2 JP 5589176B2
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- degradation product
- peptide
- peptide degradation
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Description
項1.酵素処理したエイ肉のペプチド分解物。
項2.酵素処理が、消化酵素由来プロテアーゼ、カビ・酵母由来プロテアーゼ、細菌由来プロテアーゼ、植物由来プロテアーゼからなる群より選ばれる、少なくとも1つの酵素によって行われる、項1に記載のペプチド分解物。
項3.酵素が、ペプシン、トリプシン、キモトリプシン、パンクレアチン、パパイン及びブロメラインからなる群より選択される、項2に記載のペプチド分解物。
項4.項1〜3のいずれか1つに記載のペプチド分解物を含有する飲食品。
項5.項1〜3のいずれか1つに記載のペプチド分解物を含有する、脂質代謝改善剤。
項6.項1〜3のいずれか1つに記載のペプチド分解物を含有する、肝機能改善剤。
項7.項1〜3のいずれか1つに記載のペプチド分解物を含有し、以下の(i)〜(iii)のいずれかの表示を付した飲食品。
(i) 血中脂肪やコレステロールを低減する旨の表示
(ii)肝機能を改善する旨の表示
(iii) 生活習慣病を予防し、体調を維持する旨の表示
項8.項1〜3のいずれか1つに記載のペプチド分解物を含有する、ペットフード及び又は飼料用組成物。
[実施例]ナルトビエイ肉ペプシン分解物の調製
1.原料
ナルトビエイ凍結肉(有明海産、約10 kg)を約4〜5 cm四方程度のブロックに切り、凍結状態のまま回転刃式ミキサー(ロボクープ製 R-2)で粗粉砕した。これを再凍結させ、凍結乾燥(FTS-Systems製 Dura-top/Dura-dry)に供した。乾燥品をミキシングして均質化させた。
2.ペプシン消化物の調製(図1)
ナルトビエイ肉乾燥粉末(Eagle Ray Powder;ERP)を含水エタノール(80%, v/v)で洗浄し、エキス分を除去した処理物(W-ERP)を得た。W-ERPを純水に分散させ、撹拌しながら塩酸を添加し、pH = 2.0に調整した。これを50℃に調温し、ブタ胃粘膜由来ペプシン(日本バイオコン製)をサンプルに対して1wt%添加し、そのまま18〜20 h反応させた。沸騰水中で酵素を失活(Boil, 20 min)させた反応液を遠心分離し(18,000 x G, 20min)、上清を得た。これを分画分子量5 kDaの限外ろ過膜(ミリポア製Biomax)で限外ろ過し、透過液(ペプシン消化物)および保持液(可溶性・ペプシン未消化物)を得た。これらにNaOHを添加してpH =6.5に調整し、凍結乾燥して各々の乾燥粉末を得た。ペプチド調製工程の概略図を図1に示す。
3.結果
表1に示すように、40%の収率で、ナルトビエイ肉よりペプシン分解物(Pepsic-lysate)が得られた。また、副産物であるペプシン未消化-不溶性画分、ペプシン未消化-可溶性画分および80%エタノール可溶性画分の収率は、それぞれ 25.9、16.3 ならびに18.7%であった。それぞれの産物の総アミノ酸含有量を表2に示した。
実験動物には、肥満モデルであるOtsuka Long-Evans Tokushima Fatty (OLETF)ラットを用いた。食餌組成はAIN-76に準じ、コントロール食のタンパク質はカゼイン20%とした。エイパウダー群(ERP 10%、R群)およびエイペプチド群(Ray pepsic-lysate 10%、RL群)には、それぞれエイタンパク質粉末及びエイペプチド粉末を20%添加し、カゼインと置き換えた(表2)。
表3に示すように、体重増加量、摂食量及び食餌効率においては、エイタンパク質摂取群、エイペプチド摂取群、カゼイン摂取群の間に差は認められなかった。このことは、エイペプチドがカゼインおよびエイタンパク質と同等の栄養価を有し、ラットの成長に悪影響を及ぼさないことを示していた。一方、肝臓重量並びに脂肪組織重量においては、エイペプチド摂取群で、カゼイン摂取群及びエイタンパク質摂取群に比して低減する傾向が認められた。この結果は、過剰摂取による肥満防止に対してエイペプチド摂取が有効であることを示唆していた。
Claims (6)
- 酵素処理したトビエイ肉のペプチド分解物であって、酵素が、ペプシンである、ペプチド分解物。
- 請求項1に記載のペプチド分解物を含有する飲食品。
- 請求項1に記載のペプチド分解物を含有する、脂質代謝改善剤。
- 請求項1に記載のペプチド分解物を含有する、肝機能改善剤。
- 請求項1に記載のペプチド分解物を含有し、以下の(i)〜(iii)のいずれかの表示を付した飲食品。
(i)血中脂肪やコレステロールを低減する旨の表示
(ii)肝機能を改善する旨の表示
(iii)生活習慣病を予防し、体調を維持する旨の表示 - 請求項1に記載のペプチド分解物を含有する、ペットフード又は飼料用組成物。
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CN103960462A (zh) * | 2014-05-06 | 2014-08-06 | 珠海天香苑生物科技发展股份有限公司 | 利用酿酒酵母制备多肽饲料的方法 |
CN108486087A (zh) * | 2018-04-10 | 2018-09-04 | 吴广兵 | 一种酶解鸡肝的复合酶制剂及其应用 |
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JP5925391B2 (ja) * | 2013-10-16 | 2016-05-25 | 日本水産株式会社 | ペプチド又はその酸付加塩、飲食品、及び糖尿病予防等の組成物 |
JP6518800B1 (ja) * | 2018-02-16 | 2019-05-22 | 株式会社 レオロジー機能食品研究所 | プラズマローゲンを含む機能性素材の製造方法 |
WO2020213132A1 (ja) * | 2019-04-18 | 2020-10-22 | 株式会社レオロジー機能食品研究所 | プラズマローゲンを含む機能性素材の製造方法 |
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CN103960462A (zh) * | 2014-05-06 | 2014-08-06 | 珠海天香苑生物科技发展股份有限公司 | 利用酿酒酵母制备多肽饲料的方法 |
CN103960462B (zh) * | 2014-05-06 | 2015-09-30 | 珠海天香苑生物科技发展股份有限公司 | 利用酿酒酵母制备多肽饲料的方法 |
CN108486087A (zh) * | 2018-04-10 | 2018-09-04 | 吴广兵 | 一种酶解鸡肝的复合酶制剂及其应用 |
CN108486087B (zh) * | 2018-04-10 | 2020-11-10 | 吴广兵 | 一种酶解鸡肝的复合酶制剂及其应用 |
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