JPH02289663A - Gelatin powder having excellent water soluble property and production thereof - Google Patents
Gelatin powder having excellent water soluble property and production thereofInfo
- Publication number
- JPH02289663A JPH02289663A JP11444290A JP11444290A JPH02289663A JP H02289663 A JPH02289663 A JP H02289663A JP 11444290 A JP11444290 A JP 11444290A JP 11444290 A JP11444290 A JP 11444290A JP H02289663 A JPH02289663 A JP H02289663A
- Authority
- JP
- Japan
- Prior art keywords
- gelatin
- aqueous solution
- decomposed
- impurities
- water
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 108010010803 Gelatin Proteins 0.000 title claims abstract description 96
- 239000008273 gelatin Substances 0.000 title claims abstract description 96
- 229920000159 gelatin Polymers 0.000 title claims abstract description 96
- 235000019322 gelatine Nutrition 0.000 title claims abstract description 96
- 235000011852 gelatine desserts Nutrition 0.000 title claims abstract description 96
- 239000000843 powder Substances 0.000 title claims abstract description 27
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims description 23
- 238000004519 manufacturing process Methods 0.000 title claims description 10
- 239000007864 aqueous solution Substances 0.000 claims abstract description 21
- 239000012535 impurity Substances 0.000 claims abstract description 15
- 102000004190 Enzymes Human genes 0.000 claims abstract description 12
- 108090000790 Enzymes Proteins 0.000 claims abstract description 12
- 238000010438 heat treatment Methods 0.000 claims abstract description 11
- 239000002245 particle Substances 0.000 claims abstract description 10
- 238000010298 pulverizing process Methods 0.000 claims abstract description 9
- 108091005804 Peptidases Proteins 0.000 claims abstract description 8
- 244000144972 livestock Species 0.000 claims abstract description 5
- 230000003301 hydrolyzing effect Effects 0.000 claims abstract description 4
- 238000000034 method Methods 0.000 claims description 15
- 229940088598 enzyme Drugs 0.000 claims description 11
- 238000001914 filtration Methods 0.000 claims description 8
- 102000035195 Peptidases Human genes 0.000 claims description 6
- 238000001035 drying Methods 0.000 claims description 3
- 229940024999 proteolytic enzymes for treatment of wounds and ulcers Drugs 0.000 claims description 3
- 238000001879 gelation Methods 0.000 claims 1
- 239000000243 solution Substances 0.000 abstract description 17
- 239000007787 solid Substances 0.000 abstract description 4
- 238000000354 decomposition reaction Methods 0.000 abstract description 3
- 239000004365 Protease Substances 0.000 abstract description 2
- 102100037486 Reverse transcriptase/ribonuclease H Human genes 0.000 abstract description 2
- 230000002255 enzymatic effect Effects 0.000 abstract 1
- 239000008187 granular material Substances 0.000 abstract 1
- 230000000052 comparative effect Effects 0.000 description 6
- 150000001875 compounds Chemical class 0.000 description 3
- 235000013305 food Nutrition 0.000 description 3
- 239000010985 leather Substances 0.000 description 3
- 239000002649 leather substitute Substances 0.000 description 3
- 238000002156 mixing Methods 0.000 description 3
- 239000002994 raw material Substances 0.000 description 3
- 229920003002 synthetic resin Polymers 0.000 description 3
- 239000000057 synthetic resin Substances 0.000 description 3
- 241000269350 Anura Species 0.000 description 2
- 230000001133 acceleration Effects 0.000 description 2
- 239000000654 additive Substances 0.000 description 2
- 230000000996 additive effect Effects 0.000 description 2
- 239000005018 casein Substances 0.000 description 2
- BECPQYXYKAMYBN-UHFFFAOYSA-N casein, tech. Chemical compound NCCCCC(C(O)=O)N=C(O)C(CC(O)=O)N=C(O)C(CCC(O)=N)N=C(O)C(CC(C)C)N=C(O)C(CCC(O)=O)N=C(O)C(CC(O)=O)N=C(O)C(CCC(O)=O)N=C(O)C(C(C)O)N=C(O)C(CCC(O)=N)N=C(O)C(CCC(O)=N)N=C(O)C(CCC(O)=N)N=C(O)C(CCC(O)=O)N=C(O)C(CCC(O)=O)N=C(O)C(COP(O)(O)=O)N=C(O)C(CCC(O)=N)N=C(O)C(N)CC1=CC=CC=C1 BECPQYXYKAMYBN-UHFFFAOYSA-N 0.000 description 2
- 235000021240 caseins Nutrition 0.000 description 2
- 235000015110 jellies Nutrition 0.000 description 2
- 239000008274 jelly Substances 0.000 description 2
- 238000002844 melting Methods 0.000 description 2
- 230000008018 melting Effects 0.000 description 2
- 230000002797 proteolythic effect Effects 0.000 description 2
- 238000001694 spray drying Methods 0.000 description 2
- 238000003756 stirring Methods 0.000 description 2
- 244000063299 Bacillus subtilis Species 0.000 description 1
- 235000014469 Bacillus subtilis Nutrition 0.000 description 1
- JOYRKODLDBILNP-UHFFFAOYSA-N Ethyl urethane Chemical compound CCOC(N)=O JOYRKODLDBILNP-UHFFFAOYSA-N 0.000 description 1
- 108010019160 Pancreatin Proteins 0.000 description 1
- 206010042674 Swelling Diseases 0.000 description 1
- 210000000988 bone and bone Anatomy 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000011362 coarse particle Substances 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000000593 degrading effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000004090 dissolution Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 235000013373 food additive Nutrition 0.000 description 1
- 239000002778 food additive Substances 0.000 description 1
- 238000004108 freeze drying Methods 0.000 description 1
- 239000000499 gel Substances 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000003607 modifier Substances 0.000 description 1
- 229940055695 pancreatin Drugs 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 230000017854 proteolysis Effects 0.000 description 1
- 239000011802 pulverized particle Substances 0.000 description 1
- 238000007790 scraping Methods 0.000 description 1
- 235000000346 sugar Nutrition 0.000 description 1
- 150000008163 sugars Chemical class 0.000 description 1
- 239000012756 surface treatment agent Substances 0.000 description 1
- 230000008961 swelling Effects 0.000 description 1
- 239000011882 ultra-fine particle Substances 0.000 description 1
Abstract
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明は食品添加物および工業用添加物として有用な水
溶性に優れるゼラチン粉末およびその製造方法に関する
ものである．
（従来の技術）
近年、ゼラチンの天然成分に着目して広く工業用途およ
び食品用途への使用が望まれているが、一般にゲル化工
程を経たゼラチン粉末は水に混合するだけでは溶けにく
く、加温することが必須となっている．そのため、かか
る用途に使用する場合、水溶性に優れるゼラチン粉末の
提供が望まれ、噴霧乾燥法、混合噴霧乾燥法、凍結乾燥
法が適用されてきた．しかしながら、前二者は得られる
ゼラチンがかさ高となって水に浮遊し易く、後者は製造
コストが高く、工業化になじまないという問題点があっ
た．しかも常温水に易溶性を持つものが見られず、溶解
性の改善が望まれていた．そこで、■ゼラチンゲルの融
点を降下させた後、無定形化し、ついで糖類を添加造粒
することにより、常温の市水に容易に分散・溶解する水
溶性ゼラチンを製造する方法（特公昭６０−５３５８４
号）、
■ゼラチン表面を水溶性ゼラチンでコーティングするこ
とにより、水に対する溶解性を改良する方法（特開昭６
２−１７４２３１号）、■ゼラチンを特定温度に加熱し
て融解軟化させるとともに膨化させた後、微細に粉砕す
ることにより水溶性に優れた微粒子状の粉末を製造する
方法（特開昭６２−２９５９７８号）が提案されるに至
っている．
（発明が解決しようとする課Ｂ）
しかしながら、前記■の場合はＩ［が添加されており、
使用用途が限定されるという問題点がある．また、■の
場合は一旦製造されたゼラチン粉末に水溶性ゼラチンを
再びコーティングする処理工程を必要とするため、量産
性に欠け、製造コストが高くなるという問題点がある．
さらに、■の場合は融解膨化処理という特殊処理を施す
必要上生産性に欠けるという問題点を残している．そこ
で、本発明は上記従来とは異なった観点から常温水に対
し易溶性を有するゼラチン粉末およびその多量生産に適
する方法を提供することを目的とする．
（課題を解決のための手段）
本発明は水溶性ゼラチンの原料が一般に骨成分を主体と
するものであるのに対し、家畜生皮から調製される工業
用ゼラチンは不純物を含むが、蛋白分解酵素を添加し、
低分子化したゼラチン成分は加熱加圧処理によって精製
が容易で、しかも極微粒子に粉砕することにより常温水
に対し極めて高い水溶性を示すことを見出し、完成した
もので、粗製ゼラチン水溶液を酵素分解して得られる実
質的に不純物を含まない低分子量乾燥ゼラチンでありで
、その粒度が１００ミクロン以下であることを要旨とす
る水溶性ゼラチン粉末にある．ここで、粗製ゼラチン水
溶液とは、家畜生皮を加水分解して直接製造されるゼラ
チン水溶液およびゲル化工程を経て製造された不純物を
含む工業用ゼラチンを温水により溶解した水溶液をいい
、前者は食品用および工業用ゼラチンを製造するための
通常の氷魚によるゼラチン抽出処理によって得られ、蛋
白分解酵素による分解程度は分子量２万〜１０００、好
ましくは１万以下にするのが好ましく、それによって常
温水に対する溶解度が向上するとともに、溶解したゼラ
チン水溶液は通常のゼラチン溶液と異なり、ゼリー化せ
ず、粘度が低く、流動性に冨むという物性を有する．こ
の分子量２万以下の低分子ゼラチンは微粉砕することに
より常温水に対する分散性に優れる結果、溶解度が向上
する．したがって、１００ミクロン以下にするのが好ま
しい．
上記ゼラチン粉末を製造するにあたっては、家畜生皮を
加水分解して製造された粗製ゼラチン水溶液またはゲル
化工程を経た粗製ゼラチンを温水に溶解してなる水溶液
を蛋白分解酵素を添加して分解し、加圧加熱下に不純物
を酵素分子とともにフロック化して濾過後、分解ゼラチ
ン水溶液を加熱ロール表面に塗布して乾燥させ、該乾燥
ゼラチンをジェット粉砕、特に超音速加速の下衝突板に
衝突させて粒度１００ミクロン以下に微細化して製造す
るのがよい． 本発明方法において、蛋白分解酵素とし
てプロテアーゼ、パンクレアチン、ベブトン等を使用す
ることができ、特にビオプラーゼ（枯草菌の１種、株式
会社ナガセ生化学研究所製）を用いるのが好ましい．そ
の分解条件は上記粗製ゼラチン溶液を２万以下、特に１
万以下に低分子化する条件を選択するのが適当であり、
その配合量は酵素の力価によっても異なるが、ゼラチン
固形分に対し０．１〜０．４％となるように粗製ゼラチ
ン水溶液に添加混合するのがよい．蛋白分解工程後の加
温加圧処理は、上記分解酵素を失活させるとともにゼラ
チン成分以外の不純物と酵素分子をフロック化して後工
程の濾過において除去が容易なように処理することにあ
る．その加温加圧条件は１．５〜２．０ｋｇ／ｃ＋ａで
上記粗製ゼラチン水溶液が沸騰する温度近傍が選ばれて
よい．
上記加温加熱処理後の粗製ゼラチン水溶液を濾過すると
酵素分子とゼラチン中の不純物とがフロック化している
ので、通常の濾過装置、例えば、バルプ濾過で除去容昌
である．
上記濾過したゼラチン溶液は粘性の低い水溶液であるた
め、加熱した表面を有するドラム上で乾燥するのが適当
である．乾燥温度はゼラチンが変性しない温度以下で、
一方のドラム面に塗布し、回転したドラムの反対面にて
乾燥ゼラチンを連続して掻き取ることができるようにド
ラムの回転速度を考慮して加熱温度を調製するのが好ま
しく、１２０−１３０゜Ｃで行うのがよい．
掻き取られたままのゼラチンは粒度が大きいので、微粉
砕されるが、常温水に対する易溶性を得るため、１００
ミクロン以下まで粉砕するのが好ましい．しかしながら
、ゼラチン粗大粒子を１００ミクロン以下まで粉砕する
には通常のポールミル等の粉砕機を使用しては不可能で
ある．そこで、プラスチックまたはセラミック等の粉砕
に用いられているジェット粉砕法、特に超音速加速の下
衝突板に衝突させるＩＤＳ式超音速ジェットミル（日本
ニューマチック工業株式会社）を使用するのが適当であ
る．
以下、本発明を添付図面に示す具体例に基づき詳細に説
明することにする．
（実施例１）
上質生牛皮を水に浸漬し、６０’Ｃで６時間煮処理して
粗製ゼラチン水溶液を得る．これを約１５％水溶液に調
整し、ゼラチン固形分に対しビオプラーゼ（ナガセ生化
学工業■製）を含む酵素約０．１〜０．２％を加え、６
０’Ｃ，ｐＨ６〜９で２０〜３０分間反応させ、次いで
この溶液を約１３０℃、１．５ｋｇ／ｃｄに２０分間加
熱加圧して酵素を失活させると、酵素分子はゼラチン中
の不純物と凝集してフロッグを形成する．そこで、濾過
装置を用いて濾過すると精製された低分子量ゼチラン溶
液が生成する．
この分子量を測定すると、平均分子量５７００程度（粘
度法測定による）であり、粘性の低い溶液をなす．そこ
で、これをドラム乾燥機を用いて１ ２ ０ ’Ｃのド
ラム表面に塗布して乾燥させ、その表面から乾燥ゼラチ
ンを掻き取ると、水分５％未満の乾燥ゼラチン粗大粉末
が得られる．この粗大ゼラチン粉末Ｗを第１図に示す超
音速ジェットミルに投入し、圧縮空気Ａによりり超音速
ノズルＮへ吸引加速すると、マッハ２．５〜３．０の速
度で前方の衝突板Ｐに衝突して粉砕される．粉砕された
粒子を分級機によって分級し、粗大粒子は再度超音速ノ
ズルＮに戻し、粉砕を繰り返す。得られるゼラチン粉末
は殆どが２０ミクロン程度に微粉砕されていた．
（実施例２）
工業用ゼチチンを加温下に溶解して粗製ゼラチン水溶液
を調整し、実施例１と同様にして蛋白分解処理を施し、
加温加圧処理に付すると、粗製ゼラチン水溶液中の不純
物が酵素分子とフロッグを形成して凝集する．これを濾
過すると、清澄なゼラチン水溶液が得られる．
これを実施例１と同様にして乾燥、微粉砕処理を施し、
２０ミクロン程度のゼラチン粉末を得る．（比較例１）
工業用ゼラチンを用いて実施例２と同様に粗製ゼラチン
溶液を調整し、蛋白分解処理を施すことなく加熱加圧処
理したが不純物はフロンク化せず、濾過により分離する
ことができなかった．また、ドラム表面上に塗布しよう
としたが、粘度が高く、塗布が容易でなかった．
（比較例２）
工業用ゼラチン粒子を実施例１と同様して超音速ジェッ
トミルに付し、微粉砕して１００ミクロン以下のゼラチ
ン粉末を得る．
（比較例３）
上記実施例１の中間工程で得られる乾燥ゼラチン粗粉を
ボールミルを用いて粉砕したが、平均粒度２００ミクロ
ン以下に粉砕するのは困難であった．
（水溶性試験例）
実施例１およひ比較例２および３に示す微粉末をｌ５゜
Ｃの常温水５００ｃｃに５０ｇ添加して撹拌混合すると
、実施例１のゼラチン微粉末は溶解して透明溶液を形成
し、その状態を保持した．他方、比較例２の微粉末は分
散して膨潤するだけで、溶解しなかった．そこで、５０
゛Ｃ前後に加温すると分散膨潤していたゼラチンが溶解
し、そのまま放置して冷却すると、溶液はゼリー化した
。また、比較例３の粉末は撹拌し、３０分程度放置し、
再度撹拌することにより溶解が進行し、溶解するのに長
時間必要であった．
（発明の効果）
以上の説明で明らかなように、本発明によれば、粗製ゼ
ラチン水溶液を単に酵素分解して低分子化するだけでな
く、同時に不純物を実質的に含まないように精製した乾
燥ゼラチンが得られるとともに、常温水に対して易溶性
を有する水溶性ゼラチン粉末となるので、食品用および
工業用ゼラチン添加剤として有用である．
例えば、合成樹脂用改質剤としてゼラチン（固形分）１
〜１０重景％を合成樹脂コンパウンドに添加して、吸湿
性のある人工皮革および合成皮革を製造することが提案
されているが、合成樹脂コンパウンドとの均一混合が難
しい現状にあっては、本発明に係る超微細水溶性ゼラチ
ン粉末を用いることにより、この均一混合が達成され、
より良好な天然皮革の風合および特性を発揮させること
ができ、天然皮革と同様の仕上げ処理を行うことができ
る．また、ウレタンを用いる合成皮革の湿式製法におい
てはＤＭＦに代え、本発明に係るゼラチン粉末を使用す
ることができる．
さらにまた、現在皮革用表面処理剤としてカゼインを主
成分とするものが市販されているが、このカゼイン成分
に代え、本発明に係る水溶性ゼラチンを使用することが
できる．
また、本発明方法によれば、上記水溶性に優れるゼラチ
ン粉末を大量生産することができる簡易方法を提供する
ことができる。Detailed Description of the Invention (Field of Industrial Application) The present invention relates to a highly water-soluble gelatin powder useful as a food additive and an industrial additive, and a method for producing the gelatin powder. (Prior art) In recent years, attention has been paid to the natural ingredients of gelatin, and its use in a wide range of industrial and food applications has been desired. However, gelatin powder that has gone through a gelling process is generally difficult to dissolve just by mixing with water, and is difficult to add. It is essential to warm up. Therefore, when used in such applications, it is desired to provide gelatin powder with excellent water solubility, and spray drying, mixed spray drying, and freeze drying methods have been applied. However, the former two methods have problems in that the gelatin obtained is bulky and easily floats in water, and the latter method is expensive to produce and is not suitable for industrialization. Moreover, no material was found to be easily soluble in water at room temperature, and improvements in solubility were desired. Therefore, 1) A method for producing water-soluble gelatin that can be easily dispersed and dissolved in city water at room temperature by lowering the melting point of gelatin gel, making it amorphous, and then granulating it with the addition of sugars. 53584
(No.), ■ A method of improving water solubility by coating the surface of gelatin with water-soluble gelatin (Japanese Patent Laid-Open No. 6
(No. 2-174231), ■ A method for producing fine particulate powder with excellent water solubility by heating gelatin to a specific temperature to melt, soften, and swell the gelatin, followed by finely pulverizing the gelatin (Japanese Patent Laid-Open No. 62-295978) ) has been proposed. (Question B to be solved by the invention) However, in the case of (■) above, I[ is added,
The problem is that the usage is limited. In addition, in the case of (2), a treatment step is required to re-coat the gelatin powder once produced with water-soluble gelatin, so there is a problem that it lacks mass productivity and increases production costs.
Furthermore, in the case of (2), there remains the problem of a lack of productivity due to the need to perform a special treatment called melting and swelling treatment. Therefore, an object of the present invention is to provide a gelatin powder that is easily soluble in water at room temperature and a method suitable for mass production thereof from a viewpoint different from the above-mentioned conventional methods. (Means for Solving the Problems) The present invention provides that while the raw material for water-soluble gelatin generally consists mainly of bone components, industrial gelatin prepared from livestock rawhide contains impurities, but contains proteolytic enzymes. Add
It was discovered that the low-molecular gelatin component can be easily purified by heat and pressure treatment, and that it exhibits extremely high water solubility in water at room temperature by pulverizing it into ultrafine particles. The water-soluble gelatin powder is a low-molecular-weight dry gelatin substantially free of impurities and has a particle size of 100 microns or less. Here, the crude gelatin aqueous solution refers to an aqueous gelatin solution produced directly by hydrolyzing livestock rawhide, and an aqueous solution obtained by dissolving industrial gelatin containing impurities produced through a gelling process in hot water; the former is food grade. The degree of decomposition by proteolytic enzymes is preferably from 20,000 to 1,000, preferably 10,000 or less, and the solubility in water at room temperature is In addition to improving the gelatin content, the dissolved aqueous gelatin solution has the physical properties of not turning into jelly, having low viscosity, and high fluidity, unlike ordinary gelatin solutions. By pulverizing this low-molecular-weight gelatin with a molecular weight of 20,000 or less, it has excellent dispersibility in water at room temperature, resulting in improved solubility. Therefore, it is preferable to make it 100 microns or less. In producing the above gelatin powder, an aqueous solution of crude gelatin produced by hydrolyzing livestock rawhide or an aqueous solution obtained by dissolving crude gelatin that has gone through a gelling process in warm water is decomposed by adding a proteolytic enzyme. Impurities are flocculated together with enzyme molecules under pressure heating, and after filtration, an aqueous solution of decomposed gelatin is applied to the surface of a heating roll and dried, and the dried gelatin is jet-pulverized, particularly by colliding with a collision plate under supersonic acceleration to obtain a particle size of 100. It is best to manufacture it by making it smaller than microns. In the method of the present invention, protease, pancreatin, bebutone, etc. can be used as the proteolytic enzyme, and it is particularly preferable to use bioplase (a type of Bacillus subtilis, manufactured by Nagase Biochemical Research Institute). The decomposition conditions are such that the crude gelatin solution is
It is appropriate to select conditions that reduce the molecular weight to less than 10,000 yen.
Although the amount of the compound varies depending on the enzyme titer, it is preferably added to the crude gelatin aqueous solution so that the amount is 0.1 to 0.4% based on the gelatin solid content. The purpose of the heating and pressurizing treatment after the proteolysis step is to inactivate the degrading enzymes mentioned above and to form a floc of impurities other than gelatin components and enzyme molecules so that they can be easily removed in the subsequent filtration step. The heating and pressurizing conditions may be selected from 1.5 to 2.0 kg/c+a near the temperature at which the crude gelatin aqueous solution boils. When the crude gelatin aqueous solution after the heating treatment is filtered, the enzyme molecules and impurities in the gelatin form flocs, which can be removed using a normal filtration device, such as a valve filtration. Since the filtered gelatin solution is an aqueous solution with low viscosity, it is suitable to dry it on a drum with a heated surface. The drying temperature is below the temperature at which gelatin does not denature.
It is preferable to adjust the heating temperature in consideration of the rotational speed of the drum so that the dry gelatin can be coated on one drum surface and continuously scraped off on the opposite surface of the rotating drum, and the heating temperature is 120-130°. It is best to use C. Since the gelatin that has been scraped off has a large particle size, it is finely pulverized, but in order to obtain easy solubility in water at room temperature, it is
It is preferable to grind it to microns or less. However, it is impossible to grind coarse gelatin particles to 100 microns or less using a grinder such as an ordinary pole mill. Therefore, it is appropriate to use the jet pulverization method used for pulverizing plastics or ceramics, especially the IDS type supersonic jet mill (Nippon Pneumatic Industries Co., Ltd.), which collides with a collision plate under supersonic acceleration. ．． Hereinafter, the present invention will be explained in detail based on specific examples shown in the accompanying drawings. (Example 1) High-quality raw cowhide is soaked in water and boiled at 60'C for 6 hours to obtain a crude gelatin aqueous solution. This was adjusted to about 15% aqueous solution, and about 0.1 to 0.2% of an enzyme containing bioplase (manufactured by Nagase Seikagaku Kogyo ■) was added to the gelatin solid content.
React for 20 to 30 minutes at 0'C and pH 6 to 9, then heat and pressurize this solution at approximately 130C and 1.5 kg/cd for 20 minutes to inactivate the enzyme, and the enzyme molecules will be separated from impurities in gelatin. It aggregates to form frogs. Therefore, when it is filtered using a filtration device, a purified low molecular weight zetylan solution is produced. When the molecular weight was measured, the average molecular weight was approximately 5,700 (measured by the viscosity method), indicating that it forms a solution with low viscosity. Therefore, by applying this to the surface of a drum at 120'C using a drum dryer and drying it, and scraping off the dried gelatin from the surface, a coarse dried gelatin powder with a water content of less than 5% can be obtained. This coarse gelatin powder W is put into the supersonic jet mill shown in Fig. 1, and when it is sucked and accelerated by compressed air A into the supersonic nozzle N, it hits the front collision plate P at a speed of Mach 2.5 to 3.0. Collisions and shatters. The pulverized particles are classified by a classifier, and coarse particles are returned to the supersonic nozzle N to repeat pulverization. Most of the gelatin powder obtained was finely ground to about 20 microns. (Example 2) Industrial gelatin was dissolved under heating to prepare a crude gelatin aqueous solution, which was then subjected to proteolytic treatment in the same manner as in Example 1.
When subjected to heat and pressure treatment, impurities in the crude gelatin aqueous solution form frogs with enzyme molecules and coagulate. When this is filtered, a clear gelatin aqueous solution is obtained. This was dried and pulverized in the same manner as in Example 1,
Obtain gelatin powder of approximately 20 microns. (Comparative Example 1) A crude gelatin solution was prepared using industrial gelatin in the same manner as in Example 2, and it was treated under heat and pressure without being subjected to proteolytic treatment, but the impurities were not converted into flocs and could be separated by filtration. could not. I also tried to apply it on the drum surface, but the viscosity was high and it was not easy to apply. (Comparative Example 2) Industrial gelatin particles were subjected to a supersonic jet mill in the same manner as in Example 1 and pulverized to obtain gelatin powder of 100 microns or less. (Comparative Example 3) The dry gelatin coarse powder obtained in the intermediate step of Example 1 above was ground using a ball mill, but it was difficult to grind it to an average particle size of 200 microns or less. (Water solubility test example) When 50g of the fine powder shown in Example 1 and Comparative Examples 2 and 3 was added to 500cc of room temperature water at 15°C and mixed with stirring, the fine gelatin powder of Example 1 was dissolved and became transparent. A solution was formed and maintained that way. On the other hand, the fine powder of Comparative Example 2 only dispersed and swelled, but did not dissolve. Therefore, 50
The gelatin that had been dispersed and swollen was dissolved when heated to around 50°C, and when the solution was allowed to stand and cooled, the solution turned into jelly. In addition, the powder of Comparative Example 3 was stirred and left for about 30 minutes.
Dissolution progressed by stirring again, and it took a long time to dissolve. (Effects of the Invention) As is clear from the above explanation, according to the present invention, a crude gelatin aqueous solution is not only enzymatically decomposed to have a low molecular weight, but also purified and dried to be substantially free of impurities. Since gelatin is obtained and water-soluble gelatin powder is easily soluble in water at room temperature, it is useful as a gelatin additive for food and industrial use. For example, as a modifier for synthetic resins, gelatin (solid content) 1
It has been proposed to add ~10% to synthetic resin compounds to produce hygroscopic artificial leather and synthetic leather, but given the current situation where uniform mixing with synthetic resin compounds is difficult, By using the ultrafine water-soluble gelatin powder according to the invention, this uniform mixing is achieved,
It can exhibit better texture and characteristics of natural leather, and can be finished in the same way as natural leather. Furthermore, in the wet manufacturing method of synthetic leather using urethane, the gelatin powder according to the present invention can be used instead of DMF. Furthermore, although leather surface treatment agents containing casein as a main component are currently on the market, the water-soluble gelatin according to the present invention can be used in place of this casein component. Further, according to the method of the present invention, it is possible to provide a simple method for mass-producing gelatin powder having excellent water solubility.
第１図は本発明方法に利用する超音速ジェントミルの原
理を示す概要図である．
Ｗ−・一・・ゼラチン原料、Ａ・・・・・・一圧縮空気
Ｎ一・一・一超音速ノズル、Ｐ−・・−・−・衝突板特
許出願人 宏 栄 化 成 株式会社代理人 弁理士
石 井 久 夫
第１図
原料Ｗ
作「υ表ＰFigure 1 is a schematic diagram showing the principle of the supersonic gentmill used in the method of the present invention. W-・1・Gelatin raw material, A・・・1 compressed air N1・1・1 supersonic nozzle, P・・・Collision plate Patent applicant Hiroei Kasei Co., Ltd. Agent patent attorney
Hisao Ishii Figure 1 Raw material W “υTable P”
Claims (3)
的に不純物を含まない低分子量乾燥ゼラチンであって、
その粒度が１００ミクロン以下であることを特徴とする
水溶性ゼラチン粉末。(1) A low molecular weight dry gelatin substantially free of impurities obtained by enzymatically decomposing a crude gelatin aqueous solution,
A water-soluble gelatin powder characterized in that its particle size is 100 microns or less.
水溶液を蛋白分解酵素を添加して分解し、加圧加熱下に
不純物を酵素分子とともにフロック化して濾過後、分解
ゼラチン水溶液を加熱ロール表面に塗布して乾燥させ、
該乾燥ゼラチンをジェット粉砕させて粒度１００ミクロ
ン以下に微細化してなることを特徴とする水溶性ゼラチ
ンの製造方法。(2) A crude gelatin aqueous solution produced by hydrolyzing livestock rawhide is decomposed by adding proteolytic enzymes, impurities are flocculated together with enzyme molecules under pressure and heat, and after filtration, the decomposed gelatin aqueous solution is poured onto the surface of a heated roll. Apply it and let it dry,
A method for producing water-soluble gelatin, which comprises jet-pulverizing the dried gelatin to a particle size of 100 microns or less.
なる水溶液を蛋白分解酵素を添加して分解し、加圧加熱
下に不純物を酵素分子とともにフロック化して濾過後、
分解ゼラチン水溶液を加熱ロール表面に塗布して乾燥さ
せ、該乾燥ゼラチンをジェット粉砕させて粒度１００ミ
クロン以下に微細化してなることを特徴とする水溶性ゼ
ラチンの製造方法。(3) An aqueous solution obtained by dissolving crude gelatin that has undergone a gelation process in warm water is decomposed by adding a proteolytic enzyme, and impurities are flocculated together with enzyme molecules under pressure and heat. After filtration,
1. A method for producing water-soluble gelatin, which comprises applying an aqueous solution of decomposed gelatin to the surface of a heating roll, drying it, and jet-pulverizing the dried gelatin to a particle size of 100 microns or less.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11444290A JPH02289663A (en) | 1990-04-27 | 1990-04-27 | Gelatin powder having excellent water soluble property and production thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11444290A JPH02289663A (en) | 1990-04-27 | 1990-04-27 | Gelatin powder having excellent water soluble property and production thereof |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP01109697 Division | 1989-04-27 | 1989-04-27 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH02289663A true JPH02289663A (en) | 1990-11-29 |
Family
ID=14637839
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11444290A Pending JPH02289663A (en) | 1990-04-27 | 1990-04-27 | Gelatin powder having excellent water soluble property and production thereof |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH02289663A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH03160956A (en) * | 1989-11-17 | 1991-07-10 | Nitta Gelatin Inc | Protein-containing food and drink material, protein-containing drink and production thereof |
| JP2009024036A (en) * | 2007-07-17 | 2009-02-05 | Nitta Gelatin Inc | Method for producing degraded gelatin powder and degraded gelatin powder |
| JP2009171903A (en) * | 2008-01-25 | 2009-08-06 | House Foods Corp | Granular granulated substance and method for producing the same |
| CN108586692A (en) * | 2018-01-23 | 2018-09-28 | 陕西科技大学 | A kind of use for synthetic leather can polish the preparation method and application of aqueous polyurethane |
-
1990
- 1990-04-27 JP JP11444290A patent/JPH02289663A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH03160956A (en) * | 1989-11-17 | 1991-07-10 | Nitta Gelatin Inc | Protein-containing food and drink material, protein-containing drink and production thereof |
| JP2009024036A (en) * | 2007-07-17 | 2009-02-05 | Nitta Gelatin Inc | Method for producing degraded gelatin powder and degraded gelatin powder |
| JP2009171903A (en) * | 2008-01-25 | 2009-08-06 | House Foods Corp | Granular granulated substance and method for producing the same |
| CN108586692A (en) * | 2018-01-23 | 2018-09-28 | 陕西科技大学 | A kind of use for synthetic leather can polish the preparation method and application of aqueous polyurethane |
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