JP2004236600A

JP2004236600A - Bait and method for producing the same

Info

Publication number: JP2004236600A
Application number: JP2003030052A
Authority: JP
Inventors: Hiroshi Nagaoka; 寛長岡; Satoru Masaoka; 悟正岡; Takeshi Aso; 雄阿蘇; Jiro Taniyama; 次郎谷山; Yoichi Kinekawa; 洋一杵川; Naofumi Kitahata; 直文北畠
Original assignee: Daiichi Kasei Co Ltd; Koken Co Ltd; Marukyu Co Ltd
Current assignee: Daiichi Kasei Co Ltd; Koken Co Ltd; Marukyu Co Ltd
Priority date: 2003-02-06
Filing date: 2003-02-06
Publication date: 2004-08-26
Anticipated expiration: 2023-02-06
Also published as: JP3875956B2

Abstract

<P>PROBLEM TO BE SOLVED: To provide a method for readily producing a bait, having gel strength not readily causing falling from a fishhook, containing a bait substance which fishes like in large amount and having good fish-collecting force and bait-taking properties, by which good strike and bite and excellent number of fishes hooked up can be obtained. <P>SOLUTION: The bait is composed of a collagen formed by impregnating a mixed solution obtained by mixing 9.5-67.5 wt.% solution of bait substance which fishes like with 32.5-90.5 wt.% liquid-like modified whey protein processed food so as to have 2.9-8.1 wt.% modified whey protein content into a formed product of purified collagen. <P>COPYRIGHT: (C)2004,JPO&NCIPI

Description

【０００１】
【産業上の利用分野】
本発明は、魚の好む摂餌物質を含有し、釣り針に取り付けて使用する釣り餌及びその製造方法に係るもので、より多くの摂餌物質を含有させる事で魚の喰い込みを良くし、かつ釣り針からの脱落等を良好に防止可能な強度を有する釣り餌を得て、釣果を向上させようとするものである。
【０００２】
【従来の技術】
従来、釣り餌として、天然動物やゲル化物等を用いた人工釣り餌等が使用されている。そして、近年様々な人工釣り餌の開発が試みられているが、相変わらず天然動物を用いた釣り餌が優位にある。それは、天然動物は、釣り餌として重要な要素すなわち釣り針から脱落せずかつ摂餌成分を保持する条件を満たすが、人工釣り餌がそうした条件を十分に満たしていない事が要因の一つとして挙げられる。そこで、人工釣り餌を釣り針から脱落させないようにするためには、小麦粉、大麦粉、馬鈴薯、甘藷といった穀物粉及びこれらを原料とした活性グルテン、並びにα澱粉類のほか、寒天、カラギナン、ペクチン、プルラン、アラビアガム、タラガム、卵白、グルコマンナン、アルギン酸といった天然由来の増粘剤・ゲル化剤や、ポリアクリル酸、カルボキシメチルセルロース、ポリビニルアルコール、ポリエチレングリコールといったポリマー等の合成増粘剤等の適度な粘度とゲル強度を有したものを用いたり、繊維質との併用が試みられている。
【０００３】
【発明が解決しようとする課題】
しかしながら、上述の如き従来の人工的に作られたゲル化物は、摂餌物質の含有量を増やせば摂餌性が高まるがゲル化物の強度が低下する。また、ゲル強度を高めるためには摂餌物質の含有量を少なくする必要があり摂餌性が低下する。このように、摂餌物質の含有量とゲル強度とが背反してしまうため、十分な強度と摂餌物質の含有量を満たすゲル化物を形成する事は困難であった。また、ゲル化物に布や不織布、セルロース、合成繊維等を併用すれば、これらの繊維がゲル強度を補うため、摂餌物質の含有量を多くする事が可能であるが、これらの繊維は魚が常食としていないものであるため、違和感を覚え喰い込みが悪いものとなっていた。
【０００４】
一方動物の真皮にはコラーゲンが含まれており、魚が口に含んでも違和感を持たない。また、適度な強度としなやかさは、釣り針から脱落しにくい等と言った釣り餌としての必要条件を満たしている。更に、コラーゲンは天然素材であるため環境にも負荷が少なく、魚が食べた場合には栄養にもなる。このような天然のコラーゲンをそのまま用いているものとしては、フグ、ハモ、ナマズ等の魚皮が疑似餌として知られており、これらは強度を十分に備えているが、これらのものは、主に魚類の視覚を刺激して喰わせるものである。
【０００５】
更に、魚皮は魚類が好む臭気成分や味覚成分といった摂餌物質が少なく、魚の嗜好性に合致させる事は難しいものであった。また、魚皮を魚油等の摂餌物質に浸漬しても、摂餌物質を吸収しにくく表面に付着するのみで、水中への投下により摂餌物質がすぐに失われる可能性があり、摂餌性の持続は困難であった。
【０００６】
そこで、本発明者は、精製して不純物を除いたコラーゲンに着目し、このコラーゲンに摂餌物質を含浸させる試みを行った。まず、最初に天然のコラーゲンから精製コラーゲンを作成する際に、予め摂餌物質を混合しておいてから作成するという事を試みたが、摂餌物質に含まれるアミノ酸等がコラーゲンの精製を阻害するため、種類や濃度を替えての実験も繰り返してはみたものの、何れの条件においても純度の高いコラーゲンを得る事が出来ず、そのためゲル化物の強度が弱くなり、釣り餌には不向きであった。
【０００７】
次に、精製したコラーゲンをスポンジ状又はシート状のコラーゲンの成形体に成形したものを用いた。このスポンジ状のコラーゲンの成形体は、コラーゲン溶液或いは分散液を凍結乾燥する事により成形する事ができる。また、シート状のコラーゲンの成形体は、コラーゲン溶液或いは分散液を風乾するか又はスポンジ状コラーゲンの成形体を圧縮して成形する事ができる。これらシート状又はスポンジ状のコラーゲンの成形体に、摂餌物質を含浸させる方法を試みた。この方法で得たコラーゲンゲルは、釣り餌としては十分なゲル強度を得る事ができたが、水中に投じるとコラーゲンゲル内からすぐに摂餌物質が流出してしまい、摂餌性が持続しなかった。
【０００８】
また、澱粉や寒天等のゲル化物に摂餌物質を混合し、コラーゲンの成形体に含浸させてから澱粉や寒天等を加熱溶融させてゲル化し、摂餌物質をコラーゲンゲル内に留めようと試みたが、加熱によりコラーゲンゲルのゲル強度が劣化し、釣り餌としての使用には適さなかった。
【０００９】
本発明は上述の如き課題を解決しようとするものであって、コラーゲンに摂餌物質を含有させて摂餌性を高め、かつコラーゲンゲルへの摂餌物質の保持性を高めて水中での摂餌物質の急激な流出を抑制し、摂餌物質による魚の摂餌性を持続可能な釣り餌を得ようとするものである。更に、このように摂餌物質を含有させても、釣り針からの脱落を良好に防止しかつ魚が喰えた際に良好な食感を与える事が可能なゲル強度を持つ釣り餌を得る。その結果、釣り餌への魚の喰いつきを良くし、釣果を向上させる事を目的とするものである。
【００１０】
【課題を解決するための手段】
本発明は、上述の如き課題を解決するため、第１の発明の釣り餌は、精製したコラーゲンの成形体に、魚の好む摂餌物質の溶解液９．５〜６７．５重量％と、液状改質乳清タンパク質加工品３２．５〜９０．５重量％とを混合して改質乳清タンパク質含有量を２．９〜８．１重量％とした混合液を含浸させて形成したコラーゲンゲルから成るものである。
【００１１】
また、第２の発明の釣り餌は、精製したコラーゲンの成形体に、魚の好む摂餌物質の溶解液９．５〜６７．５重量％と、液状改質乳清タンパク質加工品３２．５〜９０．５重量％とを混合して改質乳清タンパク質含有量を２．９〜８．１重量％とした混合液を含浸させた後、凍結させて形成した凍結コラーゲンゲルから成るものである。
【００１２】
また、第３の発明の釣り餌は、精製したコラーゲンの成形体に、魚の好む摂餌物質の溶解液９．５〜６７．５重量％と、液状改質乳清タンパク質加工品３２．５〜９０．５重量％とを混合して改質乳清タンパク質含有量を２．９〜８．１重量％とした混合液を含浸させた後、乾燥させて形成した乾燥コラーゲンゲルから成るものである。
【００１３】
また、第４の発明の釣り餌は、精製したコラーゲンの成形体に、魚の好む摂餌物質の溶解液９．５〜６７．５重量％と、液状改質乳清タンパク質加工品３２．５〜９０．５重量％とを混合して改質乳清タンパク質含有量を２．９〜８．１重量％とした混合液を含浸させた後、凍結させ、更にこれを解凍させた後、乾燥させて形成した乾燥コラーゲンゲルから成るものである。
【００１４】
また、第５の発明は釣り餌の製造方法で、魚の好む摂餌物質の溶解液９．５〜６７．５重量％と、液状改質乳清タンパク質加工品３２．５〜９０．５重量％とを混合して改質乳清タンパク質含有量を２．９〜８．１重量％とした混合液を作る工程と、この混合液を精製したコラーゲンの成形体に含浸させる工程とから成るものである。
【００１５】
また、第６の発明は釣り餌の製造方法で、魚の好む摂餌物質の溶解液９．５〜６７．５重量％と、液状改質乳清タンパク質加工品３２．５〜９０．５重量％とを混合して改質乳清タンパク質含有量を２．９〜８．１重量％とした混合液を作る工程と、この混合液を精製したコラーゲンの成形体に含浸させる工程と、この含浸工程によりゲル化したコラーゲンゲルを凍結させる工程とから成るものである。
【００１６】
また、第７の発明は釣り餌の製造方法で、魚の好む摂餌物質の溶解液９．５〜６７．５重量％と、液状改質乳清タンパク質加工品３２．５〜９０．５重量％とを混合して改質乳清タンパク質含有量を２．９〜８．１重量％とした混合液を作る工程と、この混合液を精製したコラーゲンの成形体に含浸させる工程と、この含浸工程によりゲル化したコラーゲンゲルを乾燥させる工程とから成るものである。
【００１７】
また、第８の発明は釣り餌の製造方法で、魚の好む摂餌物質の溶解液９．５〜６７．５重量％と、液状改質乳清タンパク質加工品３２．５〜９０．５重量％とを混合して改質乳清タンパク質含有量を２．９〜８．１重量％とした混合液を作る工程と、この混合液を精製したコラーゲンの成形体に含浸させる工程と、この含浸工程によりゲル化したコラーゲンゲルを凍結させる工程と、この凍結工程により得た凍結コラーゲンゲルを解凍させる工程と、この解凍工程により得たコラーゲンゲルを乾燥させる工程とから成るものである。
【００１８】
また、混合液は、混合液１に対して塩を０．００５〜０．０８の重量割合で添加しても良い。
【００１９】
また、精製したコラーゲンの成形体は、スポンジ状、シート状、綿状、糸状、棒状、ペレット状、ビーズ状、又は不織布状とし、このコラーゲンの成形体を魚の好む所望の大きさ及び形状に成形しても良い。
【００２０】
【作用】
本発明は、上述の如く構成したもので、第１の発明で開示した釣り餌に関する製造方法が第５発明で、魚の好む摂餌物質の溶解液９．５〜６７．５重量％と、液状改質乳清タンパク質加工品３２．５〜９０．５重量％とを混合して混合液を作り、この混合液中の改質乳清タンパク質の含有量を２．９〜８．１重量％とする工程と、この混合液を精製したコラーゲンの成形体に含浸させる工程とから成るものである。この混合液の含浸により、コラーゲンの成形体が膨潤してゲル化し、コラーゲンゲルが形成されるとともに、液状改質乳清タンパク質加工品も自発的にゲルを形成する。また、混合液への含浸処理は、常圧下で行っても良いが、減圧下で行う事により、処理時間が短縮されるとともに、コラーゲンゲルへの混合液の浸透性を高める事ができる。そして、ゲル化した改質乳清タンパク質加工品が架橋する事で、摂餌物質がコラーゲンゲル内に保持されて、第１発明の釣り餌が得られるものである。
【００２１】
上記魚の好む摂餌物質の溶解液として、動物性原料、植物性原料等から一種または複数種を任意に選択して用いる事ができる。例えば、動物性原料としては、ウニ類、オキアミ、イクラ、サケ、エビ類、イワシ、カツオ、ニシン、蚕蛹、貝類、畜産物、その他の天然動物の肉片をミンチ状としたり、これらから抽出したエキス等を使用したり、酵素処理を施しても良く、またこれらを乾燥して粉体加工したものを、水等に溶解して使用しても良いし、食品用として出回っているエキスを併用しても良い。また、その他の魚の好む原料としては、各種の酵母類、アミノ酸、塩類等を用いる事ができる。
【００２２】
また、本発明に於いて、コラーゲンの成形体の原料として精製されたコラーゲンを用いる事が必要な理由は、コラーゲンの精製を行わない場合には、魚の好まない匂いが残る事があるからである。また、精製してないコラーゲンでは、含浸させる液状改質乳清タンパク質加工品のゲル化が阻害される可能性があるとともに、コラーゲンの内部に液状改質乳清タンパク質加工品その他の混合液を均一に含浸させる事ができずゲル強度が不十分となったりムラが出る等の問題を生じる虞もあり、原料としての使用には適していないものである。
【００２３】
また、上記精製コラーゲンの原料である天然動物等の組織に含まれるコラーゲンには、不溶性と可溶性の２つがある。そして、不溶性コラーゲンの精製方法は、例えば天然動物等の組織から分離したコラーゲンに、その変性温度を超えないような温度を保ちながら、機械的な粉砕を加える。この粉砕物を水、酸溶液、アルカリ溶液、タンパク変性剤等で洗浄し、不純物を除去する事で精製を行う。この精製の際は、生体内に存在しているコラーゲンの高次構造を残しながら精製する事が望ましい。具体的にはコラーゲンの高次構造を完全に崩すのではなく、最低でもミクロフィブリル構造を残した不溶性コラーゲンとする事で、組織に含まれるコラーゲン以外の不純物を取り除き易くする事ができ、十分な精製を行う事が可能となる。また、生体内の高次構造を残す事によって、精製されたコラーゲンに物理的強度を持たせる事が可能となる。
【００２４】
一方、不溶性コラーゲンを酸、ペプシン等で処理して可溶化したコラーゲン、或いは可溶性コラーゲンでは、完全に溶液状態にする事ができるため、十分な精製が可能となる。その具体的精製方法は、例えばコラーゲンを水溶液として、この溶解液からコラーゲン成分を沈殿析出する工程を繰り返す事で行う。しかし、これら可溶化、或いは可溶性コラーゲンの場合には、精製されたコラーゲンの物理的強度を高めるために、ＵＶ、γ線、熱等による物理的分子間架橋や、アルデヒド化合物、イソシアナート化合物、エポキシ化合物等による化学的分子間架橋を導入しても良い。そして、本発明で用いるコラーゲンは、上記不溶性コラーゲンと可溶性コラーゲンの両方を混在させたものであっても良いし、或いはそれらの何れか一方のみであっても良い。
【００２５】
また、本発明で使用する液状改質乳清タンパク質加工品は、例えば特許第３０６５１１６号、特公平６−１０１９８６号、特許第３０５３４７２号公報等に開示されるようなものであり、代表的なものとしては、牛乳ホエイから低分子化合物を実質的に除去し、次いでｐＨを４以下又は６以上に調整し、その後加熱処理して得られるものである。例えば、チーズ製造時に発生するチーズ乳清を用い、乳清中の低分子化合物を、透析法やクロマトグラフィー等で実質的に除き、ｐＨ４以下又は６以上で加熱処理する事により得られる。市販品としては、株式会社第一化成製の「ジェネシス」が有用である。このような改質乳清タンパク質加工品は、澱粉や寒天等の他のタンパク質素材では得られない多くの機能性特性を有している。例えば前記澱粉や寒天等は、ゲル化させるには加熱により熱溶解させる必要があり、この熱溶解時の熱でコラーゲンゲルのゲル強度が劣化する問題があった。しかし、改質乳清タンパク質加工品では、０℃〜室温に静置するだけでゲル化するもので、熱溶解の必要がないため、コラーゲンゲルのゲル強度の劣化を生じる事がないものとなる。
【００２６】
また、改質乳清タンパク質加工品は、塩の存在により、ゲル強度が更に増強されるが、本発明の混合液に含有される摂餌物質は、原料由来の塩分が含有されていたり、抽出エキス等に更に塩分が添加されて出回っているものがある。このような摂餌物質を使用すると、この摂餌物質に含まれる塩分の作用により、改質乳清タンパク質加工品のゲル強度が増強され、その優れた架橋により、コラーゲンゲル内への摂餌物質の保持力が高まるものとなる。従って、改質乳清タンパク質加工品は、摂餌物質の架橋として使用するのに好適なものである。
【００２７】
また、上記コラーゲンの成形体、魚の好む摂餌成分、液状改質乳清タンパク質加工品等は、食品又は食品添加物として認められているので、魚や人体に対して安心して使用する事ができる。また、これらの成分は、魚が食べた際には栄養になるし、水中に放出された場合でもバクテリア等に生分解されるので、水質を汚染するといった心配が少なく、環境にも負荷の少ない使用が可能となる。
【００２８】
また、本発明の釣り餌は、液状改質乳清タンパク質加工品の含有量によって、形成されるコラーゲンゲルの状態が変わる。例えば改質乳清タンパク質の含有量が９重量％の液状改質乳清タンパク質加工品を使用した場合、液状改質乳清タンパク質加工品の含有量が３２．５重量％（改質乳清タンパク質含有量は２．９重量％となる）より少ないと、改質乳清タンパク質加工品のゲル化が困難になり、コラーゲンゲルからの摂餌物質の流出速度が早くなる。
【００２９】
逆に、液状改質乳清タンパク質加工品の含有量が９０．５重量％（改質乳清タンパク質含有量８．１重量％）より多いと、ゲル強度が高くハリ持ちの良いコラーゲンゲルが得られるものの、摂餌物質の含有量が相対的に少なくなり、集魚力に乏しくなる。そのため、液状改質乳清タンパク質加工品は、３２．５〜９０．５重量％とする。また、好ましくは、液状改質乳清タンパク質加工品を６０〜９０．５重量％とし、混合液中の改質乳清タンパク質の含有量が５．４〜８．１重量％となるようにする。
【００３０】
また、摂餌物質は、含有量が９．５重量％より少ないと水中又は魚の口内に放出される臭気成分や味覚成分が不足して集魚力の弱いものとなり、釣果が向上しない。また、摂餌物質が６７．５重量％より多いと、液状改質乳清タンパク質加工品の含有量が相対的に少なくなり、ゲル化が生じにくく脆弱な釣り餌となる。従って、摂餌物質は、９．５〜６７．５重量％の範囲で混合する。更に好ましくは、摂餌物質を１０〜５０重量％とする。
【００３１】
また、上記範囲内で、液状改質乳清タンパク質加工品と摂餌物質の配合割合を変える事で、摂餌物質の含有量を変える事ができ、この摂餌物質の含有量により釣り餌のゲル濃度を調整して、コラーゲンの成形体から摂餌物質が水中に放出される速度を自在にコントロールする事が可能となる。従って、釣り環境や釣り対象魚の性質等に応じた様々なバリエーションの釣り餌を形成する事が可能となる。
【００３２】
そして、上述の如く形成した第１発明の釣り餌は、摂餌物質を多く含有していても、改質乳清タンパク質加工品の架橋によりコラーゲンゲルのゲル強度が劣化する事はなく、ハリ持ちが良く水中での柔軟な動作が可能な適度な強さを有する製品となる。この釣り餌を水中に投入すると、魚の好む摂餌物質の臭気成分や味覚成分が水中に流出するので、良好な集魚力が得られる。また、改質乳清タンパク質加工品の架橋により摂餌物質がコラーゲンゲル内に良好に保持されているので、水中内で摂餌物質が直ちに失われる事がなく、集魚効果を持続させる事ができる。そして、コラーゲンゲルであるので、釣り餌をくわえた際に魚が違和感を覚える事がなく、更に摂餌物質が魚の口内に放出される事による相乗効果が得られるため、魚の喰い込みが良く、釣り餌としての信頼性の高い製品が得られる。
【００３３】
また、第２の発明の釣り餌は、凍結コラーゲンゲルから成り、その製造方法が第６発明で、魚の好む摂餌物質の溶解液９．５〜６７．５重量％と、液状改質乳清タンパク質加工品３２．５〜９０．５重量％とを混合して改質乳清タンパク質含有量を２．９〜８．１重量％とした混合液を作る工程と、この混合液を精製したコラーゲンの成形体に含浸させる工程と、この含浸工程によりゲル化したコラーゲンゲルを凍結させる工程とから成るものである。
【００３４】
上述の如く形成した凍結コラーゲンゲルでは、冷凍室等での長期の保存が可能となる。そして、使用時には、釣り場等で自然解凍する事により、元のゲル化物に戻り、ハリ持ちが良く水中での柔軟な動作が可能な適度なゲル強度と弾力性が復元するとともに、解凍によって摂餌物質が流出する事がなく、水中での良好な集魚力と摂餌性が持続して、優れた釣果を得る事ができる。また、改質乳清タンパク質は、凍結する事により一層強度の増したゲルが得られ、摂餌物質のコラーゲンゲル内への保持性を更に高めて、集魚力や摂餌性を持続させる事ができる。
【００３５】
また、第３の発明の釣り餌は、乾燥コラーゲンゲルから成り、その製造方法が第７発明で、魚の好む摂餌物質の溶解液９．５〜６７．５重量％と、液状改質乳清タンパク質加工品３２．５〜９０．５重量％とを混合して改質乳清タンパク質含有量を２．９〜８．１重量％とした混合液を作る工程と、この混合液を精製したコラーゲンの成形体に含浸させる工程と、この含浸工程によりゲル化したコラーゲンゲルを乾燥させる工程とから成るものである。また、このコラーゲンゲルの乾燥は、天日乾燥、温風乾燥、凍結乾燥等で行う事ができる。
【００３６】
上述の如く形成した乾燥コラーゲンゲルから成る釣り餌では、冷蔵手段や凍結手段等を必要とせず、手軽な保存や販売等が可能となるし、容量や重量を減らして、収納性や釣り場等への携帯性や商品の運搬性等も向上する。そして、使用の際は乾燥コラーゲンゲルを水等に浸漬して膨潤させゲル化物に戻した後、釣り針に取り付けても良いし、乾燥状態で釣り針に取り付け、海や湖、川等の水中に投下する事で膨潤させるものであっても良い。乾燥した釣り餌であっても、水分の吸収により元のゲル化物に復元し、ゲル強度や摂餌性を損なう事が無く、優れた釣果を得る事ができる。
【００３７】
また、第４の発明の釣り餌は、乾燥コラーゲンゲルから成り、その製造方法が第８発明で、魚の好む摂餌物質の溶解液９．５〜６７．５重量％と、液状改質乳清タンパク質加工品３２．５〜９０．５重量％とを混合して改質乳清タンパク質含有量を２．９〜８．１重量％とした混合液を作る工程と、この混合液を精製したコラーゲンの成形体に含浸させる工程と、この含浸工程によりゲル化したコラーゲンゲルを凍結させる工程と、この凍結工程により得た凍結コラーゲンゲルを解凍させる工程と、この解凍工程により得たコラーゲンゲルを乾燥させる工程とから成るものである。また、解凍させたコラーゲンを乾燥する際も、天日乾燥、温風乾燥、凍結乾燥等で行う事ができる。
【００３８】
このように、コラーゲンゲルを一旦凍結させて解凍する事で、改質乳清タンパク質加工品のゲル強度を更に増強させる事が可能となるとともに、更に乾燥させて乾燥コラーゲンゲルとする事により、長期の保存が可能となるし、容積や重量を減らす事が可能で、製品の収納性や運搬性、更には釣り場等への携帯性等にも優れた釣り餌を得る事ができる。
【００３９】
また、前述の如く、改質乳清タンパク質加工品は、混合液内に含まれる摂餌物質由来の塩分の存在により、ゲル強度が高まり、コラーゲンゲル内への摂餌物質の保持性を高める事ができる。しかし、摂餌物質の塩分が少なかったり、殆ど存在しない場合には、混合液に別個に塩を添加すれば、改質乳清タンパク質加工品のゲル化を促進して、その架橋によりコラーゲンゲル内に多くの摂餌物質を保持させる事ができる。塩を添加する際は、摂餌物質の塩分と合わせて、混合液１に対して塩が０．００５〜０．０８となる重量割合で添加する。また、上記塩として、塩化ナトリウム、塩化マグネシウム、塩化カリウム、塩化カルシウム、リン酸ナトリウム、リン酸カリウム等を使用したり、又はこれらの成分を含有する岩塩、海塩、ミネラル塩、深層海水塩等の天然塩を使用する事ができる。
【００４０】
また、塩の含有量によって、改質乳清タンパク質加工品のゲルの状態が変わるが、添加する塩が０．００５の重量割合より少ないと、改質乳清タンパク質加工品のゲル化が良好に行われず、摂餌物質の保持効果が低下する。また、塩の添加量が０．０８の重量割合より多いと、無駄な塩を供給してしまうだけでなく、コラーゲンゲルのゲル強度を低下させてしまう虞がある。従って、塩の重量割合は、摂餌物質由来の塩と別個に添加する塩とを合わせて、混合液１に対して０．００５〜０．０８とし、更に好ましくは、０．００８〜０．０３の範囲とする。
【００４１】
また、精製したコラーゲンの成形体は、スポンジ状、シート状、綿状、糸状、棒状、ペレット状、ビーズ状、又は不織布状等のものを用いれば、釣り餌製造時の取り扱いが容易であるし、混合液を含浸させ易い。また、このような形態となった製品が市販されており、これらを使用する事で、コラーゲンの精製や成形体への成形の手間を省いて、釣り餌を廉価に形成する事ができる。また、摂餌物質が天然動物からの抽出エキス等、液体のみの場合は、上記コラーゲンの成形体の優れた吸水力により十分な量を含浸させる事ができる。また、液体のみではなく、例えばアサリミンチ等の半固形状の摂餌物質であっても、スポンジ状のコラーゲンの成形体等は多孔質であるため、内部の多数の孔内に摂餌物質が入り込むので、十分な量の摂餌物質を含浸させる事ができる。また、上述の如き形態のコラーゲンの成形体を、魚の好む所望の大きさ及び形状に成形すれば、魚の視覚にもアピールして集魚力が増すとともに、喰い込みも更に良好な釣り餌を得る事ができる。
【００４２】
【実施例】
第１実施例
本発明の第１実施例の釣り餌及びその製造方法を詳細に説明する。以下に第１実施例で使用する混合液の配合割合を示す。
【００４３】

【００４４】
第１実施例の釣り餌の製造方法は、第１工程では、上記成分を混合して混合液を形成する。次に、第２工程では、幅５ｍｍ、長さ７ｍｍ、厚さ５ｍｍに裁断し、重量０．００５ｇとしたスポンジ状の精製したコラーゲンの成形体を、前記混合液に浸漬し３０〜３５Ｐａの減圧下にて５分間処理する事で、重量０．２ｇのコラーゲンゲルを形成し、第１実施例の釣り餌を得た。
【００４５】
また、上記第１実施例の釣り餌の比較対象として、幅５ｍｍ、長さ７ｍｍ、厚さ５ｍｍに裁断し、重量０．００５ｇとしたスポンジ状の精製したコラーゲンの成形体を、アサリエキスのみの溶解液に浸漬して、重量０．２ｇの第１比較例の釣り餌を形成した。
【００４６】
上記第１実施例及び第１比較例の釣り餌を用いて、平成１４年８月、千葉県市川水路にてハゼ釣りを行った。この日の釣り場の天候は雨、水温は２３℃であった。そして、本発明の第１実施例の釣り餌では、水中への投入後は、ハゼが釣り針に掛るまでアタリが常時続き、５時間でハゼが４６尾釣れた。
【００４７】
一方、第１比較例の釣り餌では、水中への投入直後はアタリがあるものの、すぐにアタリが無くなり、結果的に３尾のハゼが釣れただけで、良好な釣果が得られなかった。
【００４８】
上記の釣り結果から、まず第１比較例の釣り餌は、水中への投入直後はアサリエキスの存在によりアタリがあるが、このアサリエキスが直ぐに水中に流出してしまい、魚の摂餌性が低下したため、アタリが持続せず、良好な釣果を得られなかったと思われる。
【００４９】
これに対して、本発明の第１実施例の釣り餌では、ゲル化した改質乳清タンパク質加工品の架橋により、ミンチ状のアサリエキスであっても、コラーゲンゲル内に摂餌物質が強固に保持されるとともに、コラーゲンゲルのゲル強度も損なわれる事がなく、ハリ持ちの良い釣り餌となる。そして、水中に投入後は、アサリエキスが水中に流出するため、魚のアタリが得られるととともに、その流出速度が緩慢なため、アサリエキスによる集魚力が持続するとともに、魚が喰い込んだ際に十分な量のアサリエキスが口中に放出され、魚の摂餌性が高まり、良好な釣果が得られたと思われる。
【００５０】
第２実施例
次に、第２実施例の釣り餌及びその製造方法を詳細に説明する。以下に第２実施例に於いてコラーゲンの成形体に含浸させる混合液の配合割合を示す。
【００５１】

【００５２】
第２実施例の釣り餌の製造方法は、第１工程では、上記成分を混合して混合液を形成する。次に、第２工程では、幅７ｍｍ、長さ１５ｍｍ、厚さ５ｍｍに裁断し、重量０．０２ｇとしたスポンジ状の精製したコラーゲンの成形体を、前記混合液に浸漬し３０〜３５Ｐａの減圧下にて５分間処理する事で、コラーゲンゲルを得た。更に、第３工程で、第２工程で得たコラーゲンゲルを−２０℃にて２４時間凍結させる事により、重量０．５ｇの凍結コラーゲンゲルを形成し、第２実施例の釣り餌を得た。
【００５３】
また、上記第２実施例の釣り餌の比較対象として、幅７ｍｍ、長さ１５ｍｍ、厚さ５ｍｍに裁断し、重量０．０２ｇとしたスポンジ状の精製したコラーゲンの成形体を、オキアミエキスのみの溶解液に浸漬し３０〜２５Ｐａの減圧下にて５分間処理した後、−２０℃にて２４時間凍結させて、重量０．６ｇとした第２比較例の釣り餌を形成した。
【００５４】
上記第２実施例及び第２比較例の釣り餌を用いて、平成１４年１０月、千葉県勝山にてクロダイ釣りを行った。この日の釣り場の天候は晴れ、水温は１９．５℃であった。また、この釣行時に、第２実施例及び第２比較例の凍結コラーゲンを自然解凍させてコラーゲンゲルに戻して使用した。この釣り実験に於いて、本発明の第２実施例の釣り餌では、ハリ刺しを行っても摂餌物質であるオキアミエキスが流出する事はなく、適度なゲル強度と柔軟な弾性力でハリ持ちも良好であった。また、水中への投入後は、アタリが常時続き、９時間でクロダイが６尾釣れた。
【００５５】
一方、第２比較例の釣り餌では、まずハリ刺しの段階で、コラーゲンゲルからオキアミエキスが流出する事がしばしばあった。そして、水中への投入直後は、アタリがあるものの、直ぐにアタリが無くなる事が頻繁で、結果的にクロダイの喰い込みは無かった。
【００５６】
上述の釣り結果から、第２比較例の釣り餌は、コラーゲンゲル内への摂餌物質の保持性が悪いため、ハリ刺しの段階でオキアミエキスが流出する不具合があり、水中への投入直後はオキアミエキスが水中に流出してアタリを得られるが、このオキアミエキスが直ちに流出して集魚力が低下するとともに、クロダイが喰いついても、口中に放出されるオキアミエキスの量が少なく、摂餌性が低下してしまったため釣果を得られなかったと思われる。
【００５７】
一方、第２実施例の釣り餌は、ゲル化した改質乳清タンパク質加工品の架橋により、コラーゲンゲル内に摂餌物質が強固に保持され、ハリ刺しを行っても、オキアミエキスが流出しにくいものとなった。そして、水中に投入後は、オキアミエキスが水中に流出するため、魚のアタリが得られる。また、摂餌物質の流出速度が緩慢なため、オキアミエキスによる集魚力が持続するとともに、魚が喰いついた際に十分な量のオキアミエキスが口中に放出され、魚の喰い込みが良く、優れた釣果が得られたと思われる。
【００５８】
第３実施例
第３実施例の釣り餌及びその製造方法を詳細に説明する。以下に第３実施例で使用する混合液の配合割合を示す。
【００５９】

【００６０】
第３実施例の釣り餌の製造方法は、第１工程では、上記成分を混合して混合液を形成する。次に、第２工程では、幅５ｍｍ、長さ７ｍｍ、厚さ５ｍｍに裁断し、重量０．００５ｇとしたスポンジ状の精製したコラーゲンの成形体を、前記混合液に浸漬し３０〜３５Ｐａの減圧下にて５分間処理する事で、重量０．２ｇのコラーゲンゲルを形成した。更に、第３工程で、第２工程で得たコラーゲンゲルを天日乾燥させて乾燥コラーゲンゲルを形成し、重量０．０２ｇとする第３実施例の釣り餌を得た。
【００６１】
また、上記第３実施例の釣り餌の比較対象として、幅５ｍｍ、長さ７ｍｍ、厚さ５ｍｍに裁断し、重量０．００５ｇとしたスポンジ状の精製したコラーゲンの成形体を、アサリエキスのみの溶解液に浸漬して３０〜２５Ｐａの減圧下にて５分間処理した後、天日乾燥させて重量０．００６ｇの第３比較例の釣り餌を形成した。
【００６２】
上記第３実施例及び第３比較例の釣り餌を用いて、平成１４年１２月、東京湾田浦沖にてハゼ釣りを行った。この日の釣り場の天候は晴れ、水温は１２．０℃であった。そして、釣行時に、上記第３実施例の乾燥コラーゲンゲルを、水中に浸漬して膨潤させる事で、スポンジ状のコラーゲンゲルに戻した。そして、改質乳清タンパク質加工品の架橋により、乾燥コラーゲンゲルには多くのアサリエキスが保持されており、この乾燥コラーゲンゲルを水で戻した場合でも、ミンチ状のアサリエキスが水中に流出する事が無く、ゲル内にアサリエキスを保持した状態で、コラーゲンゲルに戻す事ができる。そのため、水中への投入後は、摂餌物質による良好な集魚力や摂餌性が持続して、ハゼの喰い込みが良好となり、７匹の釣果を得た。
【００６３】
一方、アサリエキスを含浸させて乾燥しただけの第３比較例の釣り餌では、製造の際の天日乾燥時に、重量が０．００６ｇとなり、水分とともにアサリエキスが流失してしまった。更に、釣行時に水で戻した際にも、コラーゲンゲル内からアサリエキスが水中に流出してしまった。このように第３比較例の釣り餌は、殆どの摂餌物質が失われてしまったため、水中に投入しても集魚力や摂餌性が悪く、釣果は０匹であった。
【００６４】
第４実施例
第４実施例の釣り餌及びその製造方法を詳細に説明する。以下に第４実施例で使用する混合液の配合割合を示す。
【００６５】

【００６６】
第４実施例の釣り餌の製造方法は、第１工程では、上記成分を混合して混合液を形成する。次に、第２工程では、幅７ｍｍ、長さ１５ｍｍ、厚さ５ｍｍに裁断し、重量０．０２ｇとしたスポンジ状の精製したコラーゲンの成形体を用意し、このスポンジ状のコラーゲンの成形体を前記混合液に浸漬し３０〜３５Ｐａの減圧下にて５分間処理する事で、重量０．５ｇのコラーゲンゲルを形成した。更に、第３工程で、第２工程で得たコラーゲンゲルを−２０℃にて２４時間凍結させて凍結コラーゲンゲルを形成した。その後、第４工程にて、凍結コラーゲンゲルを一旦解凍させた後、そのまま天日乾燥させて重量０．１ｇの乾燥コラーゲンゲルを形成し、第４実施例の釣り餌を得た。
【００６７】
また、上記第４実施例の釣り餌の比較対象として、幅７ｍｍ、長さ１５ｍｍ、厚さ５ｍｍに裁断し、重量０．０２ｇとしたスポンジ状の精製したコラーゲンの成形体を、オキアミエキスのみの溶解液に浸漬して３０〜２５Ｐａの減圧下にて５分間処理した後、−２０℃にて２４時間凍結させた後、一旦解凍させ、そのまま天日乾燥させて重量０．０３ｇとした第４比較例の釣り餌を形成した。
【００６８】
上記第４実施例及び第４比較例の釣り餌を用いて、平成１４年３月、千葉県興津沖にて釣りを行った。この日の釣り場の天候は雨、水温は１６．０℃であった。そして、釣行時に、上記第４実施例の乾燥コラーゲンゲルを、水中に浸漬して膨潤させる事で、スポンジ状のコラーゲンゲルに戻した。改質乳清タンパク質加工品の架橋により、凍結、解凍及び乾燥を行っても乾燥コラーゲンゲル内には多くのオキアミエキスが保持されており、この乾燥コラーゲンゲルを水で戻した場合でも、オキアミエキスが水中に流出する事がなく、ゲル内にオキアミエキスを保持した釣り餌に戻す事ができる。従って、水中への投入後は、摂餌物質による良好な集魚力や摂餌性が持続し、魚の喰い込みが良好となり、イサキ５匹が釣れた。
【００６９】
一方、オキアミエキスを含浸させて乾燥しただけの第４比較例の釣り餌では、乾燥時の重量が０．０３ｇとなり、製造の際のコラーゲンゲル解凍時に、離水してコラーゲンゲルからアサリエキスが流失してしまった。更に、釣行時に水で戻した際にも、コラーゲンゲル内からオキアミエキスが水中に流出したため、集魚力や摂餌性が悪くなり、イサキの釣果は０匹であった。
【００７０】
また、下記に他の異なる第５〜第７実施例として、釣り餌の製造時に使用する混合液の重量割合を示した。下記の如き混合液を使用した場合も、コラーゲンゲル内への摂餌物質の保持性が高く、集魚力や摂餌性に優れた釣り餌を得る事ができ、釣果を向上させる事が可能となる。
【００７１】
第５実施例

【００７２】
第６実施例

【００７３】
第７実施例

【００７４】
【発明の効果】
本発明の釣り餌は、上述の如く構成したものでありコラーゲンに摂餌物質を含有させて摂餌性を高めるとともに、改質乳清タンパク質加工品の架橋によりコラーゲンゲル内への摂餌物質の保持性を高めた製品を得る事ができる。このような釣り餌では、水中での摂餌物質の急激な流出を抑制し、摂餌物質による良好な集魚力や摂餌性を持続する事が可能となる。また、多くの摂餌物質を含有させても、釣り針からの脱落を良好に防止しかつ魚が喰えた際に良好な食感を与える事が可能なゲル強度や柔軟性を持つものとなる。従って、魚の喰い込みを良くし、釣果を向上させる事が可能となる。また、改質乳清タンパク質加工品を用いる事で、簡易な製造方法で廉価に釣り餌を形成可能となるし、コラーゲン、改質乳清タンパク質加工品、摂餌物質等は、魚や人体への影響が無く、環境にも負荷の少ない製品を得る事ができる。
【００７５】
また、本発明の釣り餌は、コラーゲンゲルを凍結させる事により、ゲル強度が更に増した製品を得る事ができ、コラーゲンゲル内への摂餌物質の保持性を高めて集魚力や摂餌性が更に向上するとともに、ゲル強度も高めて、ハリ持ちも向上させる事ができる。また、凍結保存する事により、長期の保存が可能となる。また、コラーゲンゲルや凍結コラーゲンゲルを、乾燥させた製品とする事も可能で、品質保持期間が更に長くなるとともに、乾燥により容積や重量が減少し、収納性や運搬性、釣り場等への携帯性の高い製品となる。また、乾燥状態であっても、水に浸漬する事により、コラーゲンゲルに戻す事ができるし、ゲル強度や柔軟性、摂餌物質の保持性等が低下する事がなく、ハリ持ちが良く、集魚力や摂餌性の優れた釣り餌を得る事ができる。[0001]
[Industrial applications]
The present invention relates to a fishing bait containing a food substance preferred by fish and used by being attached to a fishhook, and a method for producing the same. It is intended to obtain fishing bait having a strength capable of favorably preventing the falling off of the bait and the like, and to improve the fishing result.
[0002]
[Prior art]
Conventionally, artificial fishing baits using natural animals, gels, and the like have been used as fishing baits. In recent years, various artificial fishing baits have been developed, but fishing baits using natural animals are still dominant. One of the factors is that natural animals meet the important factor of bait, namely, the condition that they do not fall off from the hook and retain the feed components, but the artificial bait does not sufficiently meet such conditions. Can be Therefore, in order to prevent artificial fishing bait from dropping off from the hook, flour, barley flour, potato, sweet potato, and other active ingredients such as gluten, α-starch, agar, carrageenan, pectin, Suitable natural thickeners and gelling agents such as pullulan, gum arabic, cod gum, egg white, glucomannan, and alginic acid, and synthetic thickeners such as polymers such as polyacrylic acid, carboxymethylcellulose, polyvinyl alcohol, and polyethylene glycol. Attempts have been made to use those having viscosity and gel strength or to use them in combination with fibrous materials.
[0003]
[Problems to be solved by the invention]
However, as described above, the conventional artificially produced gelled material increases the feedability when the content of the feed substance is increased, but the strength of the gelled material is reduced. Further, in order to increase the gel strength, it is necessary to reduce the content of the feed substance, and the feedability is reduced. As described above, since the content of the feed substance and the gel strength are contrary to each other, it has been difficult to form a gel which satisfies the sufficient strength and the content of the feed substance. In addition, if cloth, nonwoven fabric, cellulose, synthetic fiber, etc. are used in combination with the gelled substance, these fibers supplement the gel strength, so that it is possible to increase the content of feed substances, but these fibers are used in fish. However, since he did not eat regularly, he felt uncomfortable and had a bad bite.
[0004]
On the other hand, the dermis of an animal contains collagen, and it does not feel uncomfortable even when fish contains it in the mouth. The moderate strength and suppleness meet the requirements for fishing baits, such as the difficulty of falling off from the hook. Furthermore, collagen is a natural material, and therefore has a low environmental load, and becomes a nutrient when eaten by fish. Fish shells such as puffer fish, sea gulls, and catfish are known as artificial baits that use such natural collagen as they are, and they have sufficient strength. It stimulates the sight of fish and makes them eat.
[0005]
Furthermore, fish skin has few feeding substances such as odor components and taste components that fish prefer, and it is difficult to match fish taste. In addition, even if the fish skin is immersed in a feeding substance such as fish oil, the feeding substance is hardly absorbed and adheres to the surface, and the feeding substance may be immediately lost when dropped into water. Sustained feeding was difficult.
[0006]
Therefore, the present inventor has focused on collagen that has been purified to remove impurities, and has attempted to impregnate the collagen with a feed substance. First, when preparing purified collagen from natural collagen first, we tried to mix it with feed substances in advance, but amino acids contained in the feed substances inhibited collagen purification. Therefore, although experiments with different types and concentrations were repeated, it was not possible to obtain high-purity collagen under any of the conditions, and the strength of the gel was weakened, making it unsuitable for fishing baits. Was.
[0007]
Next, a product obtained by molding the purified collagen into a sponge-like or sheet-like collagen molded body was used. The sponge-like collagen molded body can be molded by freeze-drying a collagen solution or a dispersion. Further, the sheet-shaped collagen molded article can be molded by air-drying a collagen solution or a dispersion or compressing a sponge-shaped collagen molded article. An attempt was made to impregnate these sheet-like or sponge-like collagen compacts with a feeding substance. The collagen gel obtained by this method was able to obtain sufficient gel strength as fishing bait, but when it was thrown into water, the feeding substance immediately flowed out of the collagen gel, and the feeding property was maintained. Did not.
[0008]
In addition, an attempt was made to mix a feed substance with a gelled substance such as starch or agar, impregnate the molded body of collagen, and then heat and melt the starch or agar to form a gel, thereby retaining the feed substance in the collagen gel. However, the gel strength of the collagen gel was deteriorated by heating, and was not suitable for use as fishing bait.
[0009]
The present invention has been made to solve the above-described problems, and includes a feed substance contained in collagen to enhance the feedability, and an increase in the retention of the feed substance in a collagen gel to enhance the intake of the substance in water. The aim is to control the rapid outflow of prey substances and to obtain a fishing bait that makes the fish feedable by the prey substances sustainable. Furthermore, even if such a feeding substance is contained, it is possible to obtain a fishing bait having a gel strength capable of favorably preventing the fish from falling off from the hook and giving a good texture when the fish is eaten. As a result, the purpose is to improve the bite of the fish on the bait and to improve the fishing results.
[0010]
[Means for Solving the Problems]
In order to solve the above-mentioned problems, the present invention provides a fishing bait according to the first invention, in which 9.5 to 67.5% by weight of a dissolved solution of a feed substance preferred by fish is added to a purified collagen molded product. Collagen gel formed by impregnating with a mixed liquid having a modified whey protein content of 2.9 to 8.1% by mixing with a modified whey protein processed product of 32.5 to 90.5% by weight It consists of.
[0011]
In addition, the fishing bait of the second invention is characterized in that a purified collagen molded body contains 9.5 to 67.5% by weight of a solution of a feed substance preferred by fish and a processed liquid modified whey protein product of 32.5 to 32.5%. 90.5% by weight, and a frozen collagen gel formed by impregnating with a mixed solution having a modified whey protein content of 2.9 to 8.1% by weight and then freezing. .
[0012]
Further, the fishing bait according to the third aspect of the present invention is characterized in that the purified collagen molded body is prepared by dissolving 9.5 to 67.5% by weight of a solution of a feed substance preferred by fish and a liquid modified whey protein processed product of 32.5 to A dried collagen gel formed by impregnating with a mixed solution having a modified whey protein content of 2.9 to 8.1% by mixing with 90.5% by weight and then drying. .
[0013]
Further, the fishing bait according to the fourth aspect of the present invention is characterized in that a purified collagen molded body contains 9.5 to 67.5% by weight of a solution of a feed substance preferred by fish and a processed liquid modified whey protein product of 32.5 to 32.5%. 90.5% by weight, and then impregnated with a mixed solution having a modified whey protein content of 2.9 to 8.1% by weight, frozen, thawed, and dried. It is composed of a dried collagen gel formed by heating.
[0014]
A fifth invention relates to a method of producing fishing bait, wherein 9.5 to 67.5% by weight of a solution of a feed substance preferred by fish and 32.5 to 90.5% by weight of a liquid modified whey protein processed product And a step of preparing a mixed liquid having a modified whey protein content of 2.9 to 8.1% by weight, and a step of impregnating the mixed liquid with a purified collagen molded article. is there.
[0015]
A sixth invention relates to a method of producing fishing bait, wherein a solution of a feed substance preferred by fish is 9.5 to 67.5% by weight, and a liquid modified whey protein processed product is 32.5 to 90.5% by weight. To produce a mixed solution having a modified whey protein content of 2.9 to 8.1% by weight, a step of impregnating the mixture with a purified collagen product, and a step of impregnating the mixed solution. And freezing the collagen gel gelled by the method.
[0016]
A seventh aspect of the present invention relates to a method for producing fishing bait, wherein 9.5 to 67.5% by weight of a solution of a feed substance preferred by fish and 32.5 to 90.5% by weight of a liquid modified whey protein processed product To produce a mixed solution having a modified whey protein content of 2.9 to 8.1% by weight, a step of impregnating the mixture with a purified collagen product, and a step of impregnating the mixed solution. Drying the collagen gel gelled by the above.
[0017]
An eighth invention relates to a method for producing a fishing bait, wherein 9.5 to 67.5% by weight of a solution of a feed substance preferred by fish and 32.5 to 90.5% by weight of a processed liquid modified whey protein product To produce a mixed solution having a modified whey protein content of 2.9 to 8.1% by weight, a step of impregnating the mixture with a purified collagen product, and a step of impregnating the mixed solution. The method comprises a step of freezing the collagen gel gelled by the above, a step of thawing the frozen collagen gel obtained by the freezing step, and a step of drying the collagen gel obtained by the thawing step.
[0018]
Moreover, you may add a salt to the mixed liquid 1 with respect to the mixed liquid 1 by the weight ratio of 0.005 to 0.08.
[0019]
The molded product of the purified collagen is sponge-like, sheet-like, cotton-like, thread-like, rod-like, pellet-like, bead-like, or non-woven fabric-like. The collagen molded body is formed into a desired size and shape desired by fish. You may.
[0020]
[Action]
According to a fifth aspect of the present invention, there is provided a method of manufacturing a fishing bait disclosed in the first aspect of the present invention, wherein 9.5 to 67.5% by weight of a solution of a feed substance preferred by fish is dissolved. 32.5 to 90.5% by weight of the modified whey protein processed product is mixed to form a mixture, and the content of the modified whey protein in the mixture is set to 2.9 to 8.1% by weight. And a step of impregnating the purified liquid mixture with the mixed solution. By the impregnation of the mixture, the molded body of collagen swells and gels to form a collagen gel, and the processed liquid modified whey protein product also spontaneously forms a gel. The impregnation of the mixed solution may be performed under normal pressure, but by performing the process under reduced pressure, the processing time can be shortened and the permeability of the mixed solution into the collagen gel can be increased. Then, by cross-linking the gelled modified whey protein processed product, the feed substance is held in the collagen gel, and the fishing bait of the first invention is obtained.
[0021]
As the solution of the feed substance preferred by the fish, one or more kinds can be arbitrarily selected from animal raw materials, plant raw materials and the like. For example, animal raw materials include sea urchins, krill, salmon, salmon, shrimp, sardines, skipjack, herring, silkworm pupae, shellfish, livestock products, minced meat pieces of other natural animals, and extracts extracted from these. Or may be subjected to an enzymatic treatment.They may be dried and powdered, dissolved in water, etc., or used in combination with extracts available for food. May be. In addition, various yeasts, amino acids, salts, and the like can be used as other raw materials preferred by fish.
[0022]
Further, in the present invention, the reason that it is necessary to use purified collagen as a raw material of the collagen molded body is that, if the collagen is not purified, an undesired smell of fish may remain. . In addition, unpurified collagen may inhibit the gelation of the liquid modified whey protein processed product to be impregnated, and the liquid modified whey protein processed product and other mixed liquids are evenly distributed inside the collagen. It is not suitable for use as a raw material because it may not be able to be impregnated and may cause problems such as insufficient gel strength and unevenness.
[0023]
In addition, collagen contained in tissues of natural animals and the like, which is a raw material of the purified collagen, is insoluble or soluble. In the method of purifying insoluble collagen, for example, collagen separated from tissues such as natural animals is mechanically pulverized while maintaining a temperature not exceeding its denaturation temperature. The pulverized product is purified by washing with water, an acid solution, an alkali solution, a protein denaturing agent and the like to remove impurities. At the time of this purification, it is desirable to carry out the purification while leaving the higher-order structure of collagen existing in the living body. Specifically, rather than completely destroying the higher-order structure of collagen, it is possible to easily remove impurities other than collagen contained in tissue by making it at least insoluble collagen with a microfibril structure remaining. Purification can be performed. In addition, by leaving the higher-order structure in the living body, it becomes possible to give the purified collagen physical strength.
[0024]
On the other hand, collagen in which insoluble collagen is solubilized by treating it with acid, pepsin, or the like, or soluble collagen can be completely made into a solution state, and thus can be sufficiently purified. The specific purification method is performed by, for example, using collagen as an aqueous solution and repeating a process of precipitating and precipitating a collagen component from the solution. However, in the case of these solubilized or soluble collagens, in order to increase the physical strength of the purified collagen, physical intermolecular cross-linking by UV, γ-ray, heat, etc., aldehyde compounds, isocyanate compounds, epoxy Chemical intermolecular crosslinking by a compound or the like may be introduced. The collagen used in the present invention may be a mixture of both the insoluble collagen and the soluble collagen, or only one of them.
[0025]
The processed liquid modified whey protein product used in the present invention is, for example, one disclosed in Japanese Patent No. 3065116, Japanese Patent Publication No. 6-101986, Japanese Patent No. 3053472, etc. Is obtained by substantially removing low-molecular-weight compounds from milk whey, then adjusting the pH to 4 or less or 6 or more, and then performing a heat treatment. For example, it can be obtained by using a cheese whey generated during cheese production, substantially removing low-molecular compounds in the whey by a dialysis method, chromatography, or the like, and performing a heat treatment at a pH of 4 or less or 6 or more. As a commercial product, "Genesis" manufactured by Daiichi Kasei Co., Ltd. is useful. Such modified whey protein products have many functional properties that cannot be obtained with other protein materials such as starch and agar. For example, it is necessary to heat-melt the starch, agar, etc. by heating in order to form a gel, and there is a problem that the heat at the time of the heat melting deteriorates the gel strength of the collagen gel. However, the modified whey protein processed product gels only at 0 ° C. to room temperature and does not require heat dissolution, so that the gel strength of the collagen gel does not deteriorate. .
[0026]
In addition, the modified whey protein processed product further enhances the gel strength due to the presence of the salt, but the feed substance contained in the mixed solution of the present invention contains salt derived from the raw material, or is extracted. There are some extracts and the like which are further circulated with added salt. When such a feeding substance is used, the action of the salt contained in the feeding substance enhances the gel strength of the modified whey protein processed product, and due to its excellent cross-linking, the feeding substance into the collagen gel is reduced. Is increased. Thus, the modified whey protein product is suitable for use as a cross-linking of feed material.
[0027]
In addition, since the above-mentioned collagen molded product, a feed component preferred by fish, and a processed liquid modified whey protein product are recognized as foods or food additives, they can be used with confidence in fish and human bodies. In addition, these components become nutrients when fish are eaten, and even when released into water, they are biodegraded by bacteria, etc. It can be used.
[0028]
In the fishing bait of the present invention, the state of the formed collagen gel changes depending on the content of the processed liquid modified whey protein product. For example, when a liquid modified whey protein processed product having a modified whey protein content of 9% by weight is used, the content of the liquid modified whey protein processed product is 32.5% by weight (modified whey protein modified product). If the content is less than 2.9% by weight), gelation of the modified whey protein processed product becomes difficult, and the outflow rate of the feed substance from the collagen gel is increased.
[0029]
Conversely, when the content of the liquid modified whey protein processed product is more than 90.5% by weight (modified whey protein content of 8.1% by weight), a collagen gel having high gel strength and good firmness can be obtained. However, the content of food substances is relatively low, and the fish collecting power is poor. Therefore, the liquid modified whey protein processed product is 32.5 to 90.5% by weight. Also, preferably, the processed liquid modified whey protein product is 60 to 90.5% by weight, and the content of the modified whey protein in the mixture is 5.4 to 8.1% by weight. .
[0030]
On the other hand, if the content of the feed substance is less than 9.5% by weight, odor components and taste components released into water or in the mouth of the fish are insufficient, so that the fish collecting power is weak, and the fishing result is not improved. On the other hand, if the amount of the ingested substance is more than 67.5% by weight, the content of the processed liquid modified whey protein product becomes relatively small, and gelation hardly occurs, resulting in a brittle fishing bait. Therefore, the feeding material is mixed in the range of 9.5 to 67.5% by weight. More preferably, the feed substance is 10 to 50% by weight.
[0031]
Further, within the above range, by changing the mixing ratio of the liquid modified whey protein processed product and the feeding substance, the content of the feeding substance can be changed. By adjusting the gel concentration, it is possible to freely control the rate at which the food substance is released into the water from the collagen molded article. Therefore, it is possible to form various types of fishing baits according to the fishing environment, the characteristics of the fishing target fish, and the like.
[0032]
And the fishing bait of the first invention formed as described above does not deteriorate the gel strength of the collagen gel due to the cross-linking of the modified whey protein processed product, even if it contains a large amount of feeding substance, and has a firmness. It is a product having moderate strength that can be easily operated underwater. When this fishing bait is put into the water, the odor component and the taste component of the feed substance preferred by the fish flow out into the water, so that a good fish collecting power can be obtained. In addition, since the feed substance is well retained in the collagen gel due to the cross-linking of the modified whey protein processed product, the feed substance is not immediately lost in the water, and the fish collecting effect can be maintained. . And because it is collagen gel, the fish does not feel uncomfortable when holding the fishing bait, and furthermore, a synergistic effect is obtained by releasing the feeding substance into the mouth of the fish, so that the fish bites well, A highly reliable product for fishing baits can be obtained.
[0033]
The fishing bait of the second invention is made of a frozen collagen gel, and the manufacturing method thereof is the sixth invention, wherein 9.5 to 67.5% by weight of a solution of a feed substance preferred by fish and a liquid modified whey are prepared. Mixing a protein-modified product with 32.5 to 90.5% by weight to form a mixed solution having a modified whey protein content of 2.9 to 8.1% by weight; And a step of freezing the collagen gel gelled by the impregnation step.
[0034]
The frozen collagen gel formed as described above enables long-term storage in a freezer or the like. At the time of use, by naturally thawing at a fishing place etc., it returns to the original gelled substance, restores moderate gel strength and elasticity that is firm and durable and can operate flexibly in water, and feeds by thawing. There is no outflow of substances, and good fish-collecting power and feedability in water are maintained, and excellent fishing results can be obtained. In addition, the frozen whey protein can obtain a gel with increased strength by freezing, and further enhance the retention of the feed substance in the collagen gel, and maintain the fish-collecting power and feeding ability. it can.
[0035]
Further, the fishing bait of the third invention is made of a dried collagen gel, and the manufacturing method thereof is the seventh invention, wherein 9.5 to 67.5% by weight of a solution of a feed substance preferred by fish, and a liquid modified whey Mixing a protein-modified product with 32.5 to 90.5% by weight to form a mixed solution having a modified whey protein content of 2.9 to 8.1% by weight; And a step of drying the collagen gel gelled by the impregnation step. The collagen gel can be dried by solar drying, hot air drying, freeze drying, or the like.
[0036]
Fishing baits made of the dried collagen gel formed as described above do not require refrigeration means or freezing means, and can be easily stored and sold. Also, the portability of products and the transportability of goods are improved. When used, the dried collagen gel is immersed in water or the like to swell and return to a gelled substance, and then may be attached to a fishing hook, or attached to a fishing hook in a dry state and dropped into the water of the sea, lake, river, etc. Swelling may be carried out. Even when the fishing bait is dried, it can be restored to the original gel by absorbing moisture, and excellent fishing results can be obtained without impairing the gel strength and feeding ability.
[0037]
Further, the fishing bait of the fourth invention is made of a dried collagen gel, and the manufacturing method thereof is the eighth invention, wherein 9.5 to 67.5% by weight of a solution of a feed substance preferred by fish, and a liquid modified whey Mixing a protein-modified product with 32.5 to 90.5% by weight to form a mixed solution having a modified whey protein content of 2.9 to 8.1% by weight; And a step of freezing the collagen gel gelled by the impregnation step; a step of thawing the frozen collagen gel obtained by the freezing step; and a step of drying the collagen gel obtained by the thawing step. And a process. Also, when the thawed collagen is dried, it can be dried by sun, hot air, freeze-dried or the like.
[0038]
As described above, by temporarily freezing and thawing the collagen gel, it is possible to further enhance the gel strength of the modified whey protein processed product, and by further drying the dried collagen gel for a long time, It is possible to save the fish, reduce the volume and weight, and obtain a fishing bait excellent in storage and transportability of the product, and portability to a fishing place and the like.
[0039]
In addition, as described above, the processed whey protein modified product increases the gel strength due to the presence of the salt derived from the feed substance contained in the mixed solution, and enhances the retention of the feed substance in the collagen gel. Can be. However, when the salt content of the feed substance is low or almost non-existent, adding a separate salt to the mixture promotes the gelation of the modified whey protein processed product, and the cross-linking of the processed whey protein product results in the collagen gel. Can hold more food. When the salt is added, the salt is added to the mixed solution 1 at a weight ratio of 0.005 to 0.08, together with the salt content of the feed substance. In addition, as the above salt, sodium chloride, magnesium chloride, potassium chloride, calcium chloride, sodium phosphate, potassium phosphate, or the like, or a rock salt, a sea salt, a mineral salt, a deep sea salt, or the like containing these components Can be used.
[0040]
In addition, the state of the gel of the modified whey protein processed product changes depending on the content of the salt, but when the salt added is less than 0.005 weight ratio, the gelation of the modified whey protein processed product is improved. No, the effectiveness of preserving foodstuffs is reduced. On the other hand, if the amount of the salt added is more than 0.08 by weight, not only will a wasteful salt be supplied, but also the gel strength of the collagen gel may be reduced. Therefore, the weight ratio of the salt is 0.005 to 0.08, more preferably 0.008 to 0.5, based on the mixed liquid 1 by combining the salt derived from the feed substance and the salt to be added separately. 03 range.
[0041]
In addition, if the purified collagen product is in the form of a sponge, a sheet, a cotton, a thread, a rod, a pellet, a bead, or a non-woven fabric, it can be easily handled during the production of fishing bait. It is easy to impregnate the mixture. In addition, products in such a form are commercially available, and by using them, fishing bait can be formed at low cost without labor for purifying collagen and molding into a molded body. When the feed substance is only a liquid such as an extract from a natural animal, a sufficient amount of the collagen can be impregnated by the excellent water absorption of the molded article. In addition, not only liquid but also a semi-solid feed substance such as clam mince, for example, because the sponge-like collagen molded article is porous, the feed substance enters into a large number of internal pores. Therefore, a sufficient amount of food substance can be impregnated. In addition, if the formed body of collagen as described above is formed into a desired size and shape desired by fish, it will appeal to fish's sight and increase the fish collecting power, and it will be possible to obtain fishing bait with better biting. Can be.
[0042]
【Example】
First embodiment
The fishing bait and the method of manufacturing the same according to the first embodiment of the present invention will be described in detail. The mixing ratio of the mixture used in the first embodiment is shown below.
[0043]

[0044]
In the method of manufacturing a bait according to the first embodiment, in the first step, the above components are mixed to form a mixed solution. Next, in the second step, a sponge-like purified collagen molded body cut to a width of 5 mm, a length of 7 mm, and a thickness of 5 mm and weighing 0.005 g was immersed in the mixture, and the pressure was reduced to 30 to 35 Pa. By treating for 5 minutes under the conditions, a collagen gel weighing 0.2 g was formed, and the bait of the first example was obtained.
[0045]
Further, as a comparative object of the fishing bait of the first embodiment, a sponge-shaped purified collagen product cut to a width of 5 mm, a length of 7 mm, and a thickness of 5 mm and weighed 0.005 g was prepared using only clam extract. It was immersed in the solution to form a fishing bait of the first comparative example weighing 0.2 g.
[0046]
Using the fishing baits of the first embodiment and the first comparative example, goby fishing was performed on the Ichikawa Channel in Chiba Prefecture in August 2002. The weather at the fishing ground on this day was rainy, and the water temperature was 23 ° C. Then, in the fishing bait of the first embodiment of the present invention, after being put into the water, the goby was continuously continued until the goby caught on the hook, and 46 goby were caught in 5 hours.
[0047]
On the other hand, in the fishing bait of the first comparative example, although there was a hit immediately after being put into the water, the hit disappeared immediately, and as a result only three goby could be caught, and good fishing results could not be obtained.
[0048]
From the results of the above-mentioned fishing, the fishing bait of the first comparative example was found to be short due to the presence of clam extract immediately after being introduced into the water, but this clam extract immediately flowed out into the water, and the feeding performance of the fish decreased. Therefore, it was considered that Atari did not last and good fishing results could not be obtained.
[0049]
On the other hand, in the fishing bait of the first embodiment of the present invention, the feed substance is strongly contained in the collagen gel even in the minced clam extract due to the crosslinking of the gelled modified whey protein processed product. In addition, the gel strength of the collagen gel is not impaired, and the fishing bait is firm and durable. And after pouring into the water, the clam extract flows out into the water, and at the same time the fish crawling is obtained, and the outflow speed is slow, so that the fishing power by the clam extract continues and when the fish bites It is considered that a sufficient amount of clam extract was released into the mouth, the feeding of the fish was enhanced, and good fishing results were obtained.
[0050]
Second embodiment
Next, the fishing bait of the second embodiment and a method of manufacturing the same will be described in detail. The mixing ratio of the mixed liquid for impregnating the collagen molded article in the second embodiment is shown below.
[0051]

[0052]
In the method for producing fishing bait according to the second embodiment, in the first step, the above components are mixed to form a mixed solution. Next, in the second step, a sponge-shaped purified collagen product cut to a width of 7 mm, a length of 15 mm, and a thickness of 5 mm and weighed 0.02 g was immersed in the mixture, and the pressure was reduced to 30 to 35 Pa. A collagen gel was obtained by treating under the following conditions for 5 minutes. Further, in the third step, the collagen gel obtained in the second step was frozen at −20 ° C. for 24 hours to form a frozen collagen gel having a weight of 0.5 g, and the bait of the second example was obtained. .
[0053]
As a comparative object of the fishing bait of the second embodiment, a sponge-shaped purified collagen product cut to a width of 7 mm, a length of 15 mm, and a thickness of 5 mm and weighed 0.02 g was prepared using only krill extract. After being immersed in the dissolving solution and treated under a reduced pressure of 30 to 25 Pa for 5 minutes, it was frozen at −20 ° C. for 24 hours to form a fishing bait of the second comparative example having a weight of 0.6 g.
[0054]
Using the fishing baits of the second example and the second comparative example, blackfish fishing was performed in Katsuyama, Chiba Prefecture in October 2002. The weather at the fishing place was fine on this day, and the water temperature was 19.5 ° C. At the time of fishing, the frozen collagen of the second example and the second comparative example was naturally thawed and returned to the collagen gel before use. In this fishing experiment, in the fishing bait of the second embodiment of the present invention, the krill extract, which is a feeding substance, did not flow out even if the stab was stabbed. The durability was good. In addition, after being thrown into the water, squirrels continued, and six blackfish were caught in 9 hours.
[0055]
On the other hand, in the fishing bait of the second comparative example, the krill extract often flowed out of the collagen gel at the stage of stabbing. Immediately after being thrown into the water, although there was an attack, the attack often disappeared immediately, and as a result, there was no blackfish biting.
[0056]
From the results of the above-mentioned fishing, the fishing bait of the second comparative example has a problem that the krill extract flows out at the stage of stabbing due to poor retention of the feed substance in the collagen gel. The krill extract can flow out into the water to obtain Atari, but this krill extract immediately leaks out and reduces the fish-collecting power. It seems that no fish was obtained because the fish had dropped.
[0057]
On the other hand, in the fishing bait of the second embodiment, the feeding substance was firmly held in the collagen gel due to the cross-linking of the gelled modified whey protein processed product, and the krill extract flowed out even when the stab was performed. It became difficult. After being introduced into the water, the krill extract flows out into the water, so that the fish can be obtained. In addition, since the outflow rate of the feed substance is slow, the krill extract is maintained by the krill extract, and a sufficient amount of the krill extract is released into the mouth when the fish is eaten. It seems that the catch was obtained.
[0058]
Third embodiment
The fishing bait of the third embodiment and a method of manufacturing the same will be described in detail. The mixing ratio of the mixed liquid used in the third embodiment is shown below.
[0059]

[0060]
In the method of manufacturing a bait according to the third embodiment, in the first step, the above components are mixed to form a mixed solution. Next, in the second step, a sponge-like purified collagen molded body cut to a width of 5 mm, a length of 7 mm, and a thickness of 5 mm and weighing 0.005 g was immersed in the mixture, and the pressure was reduced to 30 to 35 Pa. By treating under the following conditions for 5 minutes, a collagen gel having a weight of 0.2 g was formed. Further, in the third step, the collagen gel obtained in the second step was dried in the sun to form a dried collagen gel, and the fishing bait of the third example having a weight of 0.02 g was obtained.
[0061]
As a comparative object of the fishing bait of the third embodiment, a sponge-shaped purified collagen product cut to a width of 5 mm, a length of 7 mm, and a thickness of 5 mm and weighed 0.005 g was prepared using only clam extract. After being immersed in the solution and treated for 5 minutes under a reduced pressure of 30 to 25 Pa, it was dried in the sun to form a fishing bait of the third comparative example having a weight of 0.006 g.
[0062]
Using the fishing baits of the third example and the third comparative example, goby fishing was performed off the coast of Taura, Tokyo Bay in December 2002. On this day, the weather at the fishing ground was fine and the water temperature was 12.0 ° C. Then, at the time of fishing, the dried collagen gel of the third embodiment was immersed in water to swell, thereby returning the sponge-like collagen gel. And, due to the cross-linking of the modified whey protein processed product, a large amount of clam extract is retained in the dried collagen gel, and even when this dried collagen gel is returned with water, the minced clam extract flows out into the water. It is possible to return the collagen gel to the collagen gel while keeping the clam extract in the gel. Therefore, after pouring into water, good fish-collecting power and feeding ability by the feed substance were maintained, the goby biting was improved, and seven fish were obtained.
[0063]
On the other hand, the fishing bait of the third comparative example, which was simply impregnated with the clam extract and dried, weighed 0.006 g when dried in the sun during production, and the clam extract was washed away with the water. Further, when the fish was returned with water at the time of fishing, the clam extract flowed out of the collagen gel into the water. As described above, the fishing bait of the third comparative example lost most of the feed substance, and thus had poor fish-collecting power and feeding ability even when put into water, and had no fishing results.
[0064]
Fourth embodiment
The fishing bait of the fourth embodiment and a method of manufacturing the same will be described in detail. The mixing ratio of the mixture used in the fourth embodiment is shown below.
[0065]

[0066]
In the method of manufacturing a fishing bait according to the fourth embodiment, in the first step, the above components are mixed to form a mixed solution. Next, in the second step, a sponge-shaped purified collagen molded body having a width of 7 mm, a length of 15 mm, and a thickness of 5 mm and a weight of 0.02 g was prepared. By immersing in the mixed solution and treating under reduced pressure of 30 to 35 Pa for 5 minutes, a collagen gel having a weight of 0.5 g was formed. Further, in the third step, the collagen gel obtained in the second step was frozen at −20 ° C. for 24 hours to form a frozen collagen gel. Thereafter, in a fourth step, the frozen collagen gel was once thawed and then dried in the sun to form a dry collagen gel having a weight of 0.1 g, thereby obtaining the fishing bait of the fourth example.
[0067]
Further, as a comparison object of the fishing bait of the fourth embodiment, a sponge-shaped purified collagen product cut to a width of 7 mm, a length of 15 mm, and a thickness of 5 mm and weighed 0.02 g was prepared using only krill extract. After being immersed in the dissolving solution and treated under reduced pressure of 30 to 25 Pa for 5 minutes, frozen at −20 ° C. for 24 hours, once thawed, and dried as it is in the sun to obtain a fourth weight of 0.03 g. A comparative bait was formed.
[0068]
Using the fishing baits of the fourth example and the fourth comparative example, fishing was performed off the coast of Okitsu, Chiba Prefecture in March 2002. The weather at the fishing spot on that day was rainy, and the water temperature was 16.0 ° C. Then, at the time of fishing, the dry collagen gel of the fourth embodiment was immersed in water to swell, thereby returning the collagen gel to a sponge-like collagen gel. Due to the cross-linking of the modified whey protein processed product, many krill extracts are retained in the dried collagen gel even when frozen, thawed and dried, and even when this dried collagen gel is returned with water, Can be returned to the fishing bait with the krill extract retained in the gel without flowing out into the water. Therefore, after being put into the water, good fish-collecting power and feeding ability by the feed substance were maintained, the biting of fish became good, and five fish were caught.
[0069]
On the other hand, the fishing bait of the fourth comparative example, which was merely impregnated with the krill extract and dried, weighed 0.03 g when dried, and when the collagen gel was thawed during production, water was released and the clam extract was washed away from the collagen gel. have done. Furthermore, even when the fish was returned with water during fishing, the krill extract flowed out of the collagen gel into the water, so that the fish-collecting power and feeding ability were poor, and the number of fish of the fish was zero.
[0070]
In addition, the weight ratio of the mixed liquid used in the production of fishing bait is shown below as other different fifth to seventh examples. Even when the following mixed solution is used, it is possible to obtain a fishing bait with high retention of feed substances in the collagen gel, excellent fishing ability and feeding performance, and it is possible to improve fishing results. Become.
[0071]
Fifth embodiment

[0072]
Sixth embodiment

[0073]
Seventh embodiment

[0074]
【The invention's effect】
The fishing bait of the present invention is configured as described above, and contains a feed substance in collagen to enhance the feedability, and cross-links the modified whey protein processed product to convert the feed substance into the collagen gel. A product with improved retention can be obtained. In such a fishing bait, it is possible to suppress a rapid outflow of the feed substance in the water, and to maintain good fishing ability and feedability by the feed substance. In addition, even if a large amount of food substance is contained, the gel has a gel strength and flexibility that can prevent the fish from falling off from the hook and provide a good texture when the fish is eaten. Therefore, it is possible to improve the bite of the fish and improve the fishing result. In addition, by using modified whey protein processed products, it is possible to form fishing bait with a simple manufacturing method at low cost, and collagen, modified whey protein processed products, feeding substances, etc. It is possible to obtain a product that has no influence and that has less impact on the environment.
[0075]
In addition, the fishing bait of the present invention can obtain a product having a further increased gel strength by freezing the collagen gel, and enhance the retention of the feed substance in the collagen gel to improve the fish collecting power and the feeding property. Is further improved, the gel strength is also increased, and the firmness can be improved. In addition, long-term storage can be achieved by freezing storage. In addition, collagen gel or frozen collagen gel can be made into a dried product, and the quality preservation period is further extended, and the volume and weight are reduced by drying. It becomes a highly productive. Also, even in a dry state, by immersion in water, it can be returned to collagen gel, gel strength and flexibility, without reducing the retention of feeding substances, good firmness, You can get fishing bait with excellent fish collecting power and feeding ability.

Claims

The purified collagen molded body was mixed with 9.5 to 67.5% by weight of a solution of a feed substance preferred by fish and 32.5 to 90.5% by weight of a processed liquid modified whey protein product. A fishing bait comprising a collagen gel formed by impregnating a mixed solution having a whey protein content of 2.9 to 8.1% by weight.

The purified collagen molded body was mixed with 9.5 to 67.5% by weight of a solution of a feed substance preferred by fish and 32.5 to 90.5% by weight of a processed liquid modified whey protein product. A fishing bait comprising a frozen collagen gel formed by impregnating with a mixed solution having a whey protein content of 2.9 to 8.1% by weight and then freezing it.

The purified collagen molded body was mixed with 9.5 to 67.5% by weight of a solution of a feed substance preferred by fish and 32.5 to 90.5% by weight of a processed liquid modified whey protein product. A fishing bait comprising a dried collagen gel formed by impregnating with a mixed solution having a whey protein content of 2.9 to 8.1% by weight and then drying.

The purified collagen molded body was mixed with 9.5 to 67.5% by weight of a solution of a feed substance preferred by fish and 32.5 to 90.5% by weight of a processed liquid modified whey protein product. After being impregnated with a mixed solution having a whey protein content of 2.9 to 8.1% by weight, it is frozen, then thawed, and then dried to form a dried collagen gel. And fishing baits.

A solution of 9.5 to 67.5% by weight of a solution of a feed substance preferred by fish and 32.5 to 90.5% by weight of a liquid modified whey protein processed product are mixed to give a modified whey protein content of 2%. A method for producing a fishing bait, comprising: a step of preparing a mixed solution having a concentration of 8.9 to 8.1% by weight; and a step of impregnating the mixed solution with a purified collagen molded article.

A solution of 9.5 to 67.5% by weight of a solution of a feed substance preferred by fish and 32.5 to 90.5% by weight of a liquid modified whey protein processed product are mixed to give a modified whey protein content of 2%. A step of preparing a mixed solution of 0.9 to 8.1% by weight, a step of impregnating the mixed solution with a purified collagen product, and a step of freezing the collagen gel gelled by the impregnation step. A method for producing a fishing bait, characterized in that:

A solution of 9.5 to 67.5% by weight of a solution of a feed substance preferred by fish and 32.5 to 90.5% by weight of a liquid modified whey protein processed product are mixed to give a modified whey protein content of 2%. A step of preparing a mixed solution of 0.9 to 8.1% by weight; a step of impregnating the mixed solution with a purified collagen molded body; and a step of drying the collagen gel gelled by the impregnation step. A method for producing a fishing bait, characterized in that:

A solution of 9.5 to 67.5% by weight of a solution of a feed substance preferred by fish and 32.5 to 90.5% by weight of a liquid modified whey protein processed product are mixed to give a modified whey protein content of 2%. A step of preparing a mixed solution having a concentration of 0.9 to 8.1% by weight, a step of impregnating the mixed solution with a purified collagen molded body, a step of freezing the collagen gel gelled by the impregnation step, A method for producing a fishing bait comprising: a step of thawing the frozen collagen gel obtained in the step; and a step of drying the collagen gel obtained in the thawing step.

5. The fishing bait according to claim 1, wherein the mixed liquid has a salt added to the mixed liquid 1 in a weight ratio of 0.005 to 0.08.

9. The method according to claim 5, wherein the mixed liquid is prepared by adding a salt to the mixed liquid 1 in a weight ratio of 0.005 to 0.08.

The purified collagen product was sponge-like, sheet-like, cotton-like, thread-like, rod-like, pellet-like, bead-like, or non-woven fabric-like. The fishing bait according to claim 1, 2, 3, or 4, wherein:

The purified collagen product was sponge-like, sheet-like, cotton-like, thread-like, rod-like, pellet-like, bead-like, or non-woven fabric-like. The method for producing a fishing bait according to claim 5, 6, 7, or 8, wherein