JP5115982B2 - 小麦加工製品の改質剤及び小麦加工製品の製造方法 - Google Patents
小麦加工製品の改質剤及び小麦加工製品の製造方法 Download PDFInfo
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- JP5115982B2 JP5115982B2 JP2008217335A JP2008217335A JP5115982B2 JP 5115982 B2 JP5115982 B2 JP 5115982B2 JP 2008217335 A JP2008217335 A JP 2008217335A JP 2008217335 A JP2008217335 A JP 2008217335A JP 5115982 B2 JP5115982 B2 JP 5115982B2
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Landscapes
- Bakery Products And Manufacturing Methods Therefor (AREA)
- Enzymes And Modification Thereof (AREA)
Description
日本DNAデータバンク(DDBJ)より、小麦PDI遺伝子情報を検索取得し、2種の小麦PDI遺伝子情報をBio-Edit上でアライメントした。アライメント後、配列番号:1で表わされる塩基配列のOpen Reading Frame(ORF)領域の3'末端側及び5'末端側の外側でプライマーを作成し、小麦根より抽出したtotal RNAを逆転写し得られたcDNAを鋳型としてPDIのORFをPCRにて増幅後、発現ベクターpET21Aに挿入し、発現宿主大腸菌BL21(DE3)に形質転換し、His-Tag融合タンパク質として発現させた。
(1)上記1で得られたrPDIについて、最適温度、最適pH、温度安定性、pH安定性、分子量を測定した。また、小麦粉由来の天然PDIについても同様に評価した。小麦粉由来のPDIは、ハルユタカ(2007年北海道産)を用いて、Ken Kainuma(1998)らの方法を用いて酵素を抽出した。小麦全粒を4gずつ量り採り、マルチビーズショッカー(MB601U(S)、安井機械社製)にて破砕し、緩衝液A(50mM Tris-HCl (pH8.0)、5mM DTT 、50mM NaCl、10mM EDTA、2mM PMSF、Triton X-100)16mlを加え、ワーリングブレンダーにてホモジナイズした。これを遠心分離し、得られた上澄液を硫酸アンモニウムにて20%飽和し、遠心分離して得られた上澄液を分子量25,000カットの透析チューブを用い、緩衝液B(50mM Tris-HCl (pH8.0))にて1晩透析した。透析後、遠心分離することにより得られたものを使用した(表1中「小麦粒PDI」と表記する)。
(1)パンの製造
rPDI添加による製パン性への影響を検討した。rPDIは、小麦粉に添加する方法で使用した。小麦粉としては、製パン性が低い中力粉(Australian Standard White:ASW)と、製パン性に優れている強力粉(Dark Northern Spring:DNS)を使用した。
rPDIの添加量の違いがパンの品質にどのように影響するかを検討するため、上記(1)と同様の製造方法で、rPDIの添加量のみ変化させてパンを製造した。そして、製造したパンにつき、上記(1)に記載した方法で比容積及び硬さを評価した。結果を表4に示す。
Claims (2)
- 配列番号:1で表わされる塩基配列からなるポリヌクレオチドで形質転換した大腸菌から産生されたリコンビナントプロテインジスルフィドイソメラーゼを主成分とする小麦加工製品の改質剤。
- 配列番号:1で表わされる塩基配列からなるポリヌクレオチドで形質転換した大腸菌から産生されたリコンビナントプロテインジスルフィドイソメラーゼを主成分とする改質剤を小麦粉に添加して生地を形成する、小麦加工製品の製造方法。
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| JP2008217335A JP5115982B2 (ja) | 2008-08-26 | 2008-08-26 | 小麦加工製品の改質剤及び小麦加工製品の製造方法 |
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| JP2008217335A JP5115982B2 (ja) | 2008-08-26 | 2008-08-26 | 小麦加工製品の改質剤及び小麦加工製品の製造方法 |
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| Publication Number | Publication Date |
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| JP2010051196A JP2010051196A (ja) | 2010-03-11 |
| JP5115982B2 true JP5115982B2 (ja) | 2013-01-09 |
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Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09191820A (ja) * | 1996-01-18 | 1997-07-29 | Ajinomoto Co Inc | 菓子類の軟化防止方法 |
| WO1998035049A1 (en) * | 1997-02-07 | 1998-08-13 | Oriental Yeast Co., Ltd. | Recombinant yeast pdi and process for preparing the same |
| EP1041890B1 (en) * | 1997-12-22 | 2005-04-20 | Novozymes A/S | Carbohydrate oxidase and use thereof in baking |
| WO2003014151A2 (en) * | 2001-08-10 | 2003-02-20 | Genset S.A. | Human secreted proteins, their encoding polynucleotides, and uses thereof |
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