JP3955087B2 - Highly flowable maltitol powder and method for producing the same - Google Patents
Highly flowable maltitol powder and method for producing the same Download PDFInfo
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Description
【０００１】
【発明の属する技術分野】
【０００２】
本発明は、流動性の高いマルチトール粉末及びその製造方法に関するものである。
【０００３】
【従来の技術及び発明が解決しようとする課題】
【０００４】
マルチトール粉末は、マルトースを接触水素化し、粉末化することにより製造される糖アルコールであり、甘味質が砂糖に近く、甘味度も他の糖アルコールに比較して砂糖に近く、口内細菌により資化されにくいので虫歯の原因にならず、ヒトの消化酵素では消化されにくいなどの特徴があるため、糖尿病患者、肥満や虫歯を予防したいと考えている人々に広く利用されている。
【０００５】
また、マルチトール結晶などに代表されるマルチトール粉末は、非吸湿性、熱などに対する安定性、インシュリン分泌を促さないことや各種ミネラルの吸収に好ましい影響を与えることなど、各種の有用な機能を有するので、前記の特殊な用途に止まらず、一般の食品や医薬品、化粧品の材料等としても広く利用されつつある。
【０００６】
現在流通しているマルチトール粉末は、分蜜法、ブロック粉砕法、ニーダー法などに依って製造されているが、このような方法により製造したマルチトール粉末は流動性が低いという課題がある。
【０００７】
マルチトール粉末の流動性が低いことにより、自動化された機械で扱うことが困難であるなどの不都合があり、また、卓上甘味料などの高い流動性が要求される用途には使いにくいという課題もあった。
【０００８】
このような課題を改善しようとして、スプレー法やその類似技術によるマルチトール粉末の製造法も提案されている。
【０００９】
提案されている技術としては、例えば、特開昭５１−３２７４５号公報に紹介されている方法や、特開昭５７−１３４４９８号公報に紹介されている方法がある。この中、特開昭５１−３２７４５号公報に紹介されている方法は、無水まで濃縮した液状マルチトールを噴霧機により、保温雰囲気中に噴出造粒し、固化させることなく冷却撹拌する被覆物質微粉末上に落下混合をさせて、該マルチトール粒子表面に、被覆微粉末を吸着させて固化固定する方法である。
【００１０】
また、特開昭５７−１３４４９８号公報に紹介されている方法は、例えば、組成がソルビトール０．８％、マルチトール９２．２％、マルトトリイトール４．６％、マルトテトライトール以上のデキストリンアルコール２．４％からなるマルチトール溶液を８０％に濃縮した後、助晶缶にとり、無水結晶マルチトール含有含蜜結晶粉末２％を加えて、５０℃からゆっくり撹拌しつつ徐冷し、晶出率３５％のマスキットを得、高圧ポンプにて１５０kg/cm2の圧にて１．５mm口径ノズルより乾燥塔上より噴霧し、これと同時に、８５℃の熱風を乾燥塔の上部より送風して底部に設けた移送用金網コンベア上に捕集し、コンベアの下より４０℃の温風を送りつつ移動金網コンベア上に捕集した結晶粉末を乾燥塔外に徐々に移動させ、４０分を要して取り出す。次に、この取り出した結晶粉末を熟成塔に充填して１０時間熟成させ、結晶化と乾燥を完了させ、無水結晶マルチトール含有含蜜結晶粉末を収率９２％で得るという方法である。
【００１１】
しかし、前記の方法にも依然として解決しなければならない課題が多く残されていたのである。
【００１２】
例えば、特開昭５１−３２７４５号公報の方法には、得られる粉末が最初は良好な流動性を示すが、粉末が結晶質ではなく、ガラス状で極めて吸湿性の高い粉末であるため、直に吸湿して徐々に流動性を失い、他の物理的な性質も次第に変化してしまうので実用に適さないという課題があった。
【００１３】
また、特開昭５７−１３４４９８号公報に紹介されている方法では、濃度８０％に濃縮した後２％の種結晶を加えて温度５０℃から徐冷して晶出率３５％のマスキットを調製するので、マスキット中の結晶粒子が大きくなりがちで適切な粘度のマスキットが得られない場合があること、従って、安定的に噴霧乾燥操作を続けることが困難になること、また、良好な状態のマスキットが得にくいので得られる粉末の熟成に長時間を要する場合が多く、結晶化度の低い製品が生成しがちであること等の課題が残されていた。
【００１４】
つまり、従来の流動性の高いマルチトール粉末の製造、中でも噴霧乾燥法による製造は、他の糖類や糖アルコール類に比べて困難であり、何れも適切な条件で行われておらず、従って、連続的な製造が出来なかったり、その方法によって得られた製品の性質に課題が残されていたりして、それらの方法により得られる製品が市場に出ることは無かったので、前述の課題を解決することが望まれていたのである。
【００１５】
【課題を解決するための手段】
【００１６】
本発明者等は、前述の課題を解決するため、鋭意検討した結果、従来より流通しているマルチトール粉末の製造方法によると個々の粉末の粒子が鋭角端の多い不定形であることが流動性に関与していることに着目し、更に、マルチトール粉末の製造方法の中でも噴霧乾燥法による製造技術において、最も大切な技術が良好な状態のマスキットを調製する方法にあることを見出し、その調製方法を厳しく限定したのち水分が残った状態まで噴霧乾燥して熟成させることにより、物理的性質の安定した流動性の高いマルチトール粉末を製造することに成功し、本発明を完成するに至った。
【００１７】
本発明の課題を解決するための手段は、下記の通りである。
【００１８】
第一のマルチトール粉末に関する本発明は、温度２５℃、湿度５０％の雰囲気下で２日間保存したのちに、粒径が２０〜５０メッシュの粉末の安息角が２５〜３７°の性質を示す流動性の高いマルチトール粉末である。
【００１９】
また、マルチトール粉末に関する他の本発明は、１）マルチトール純度８５〜９９．９重量％で固形分濃度が７０〜９０重量％のマルチトール水溶液から、懸濁結晶量１０〜５０重量％のマルチトールマスキットを調製する第一工程、２）第一工程で得られたマルチトールマスキットを送風温３０〜８０℃に調節した噴霧乾燥機に導入して噴霧乾燥し、水分２〜７重量％のマルチトール粉末を得る第二工程、３）第二工程で得られた粉末を温度２５〜６５℃にて熟成したのち乾燥する第三工程、の３工程を逐次的に経由することにより製造された流動性の高いマルチトール粉末である。
【００２０】
さらにまた、マルチトール粉末に関する他の本発明は、１）マルチトール純度８５〜９９．９重量％で固形分濃度が７０〜９０重量％のマルチトール水溶液から、懸濁結晶量１０〜５０重量％のマルチトールマスキットを調製する第一工程、２）第一工程で得られたマルチトールマスキットを送風温３０〜８０℃に調節した噴霧乾燥機に導入して噴霧乾燥し、水分２〜７重量％のマルチトール粉末を得る第二工程、３）第二工程で得られた粉末を温度２５〜６５℃にて熟成したのち乾燥する第三工程、の３工程を逐次的に経由することにより製造され、温度２５℃、湿度５０％の雰囲気下で２日間保存したのちに、粒径が２０〜５０メッシュの粉末の安息角が２５〜３７°の性質を示す流動性の高いマルチトール粉末である。
【００２１】
第二の本発明は、流動性の高いマルチトール粉末を製造する方法において、
１）マルチトール純度が８５〜９９．９重量％で固形分濃度が７０〜９０重量％のマルチトール水溶液から、必要に応じて種結晶を加え、懸濁結晶量１０〜５０重量％のマルチトールマスキットを調製する第一工程、２）第一工程で得られたマルチトールマスキットを送風温３０〜８０℃に調節した噴霧乾燥機に導入して噴霧乾燥し、水分２〜７重量％のマルチトール粉末を得る第二工程、３）第二工程で得られた粉末を温度２５〜６５℃にて熟成したのち乾燥する第三工程、の３工程を逐次的に経由することを特徴とする流動性の高いマルチトール粉末の製造方法である。
【００２２】
また、第三の本発明は、第一工程が、マルチトール純度８５〜９９．９重量％で固形分濃度が７０〜９０重量％のマルチトール水溶液を温度０〜４０℃の範囲まで冷却して過飽和状態にし、撹拌又は揺動等の刺激を与えて微結晶を生成させることによりマルチトールマスキットを調製する方法である、前記第二の発明に記載の流動性の高いマルチトール粉末の製造方法である。
【００２３】
また、第四の本発明は、第一工程が、マルチトール純度８５〜９９．９重量％で固形分濃度が７０〜９０重量％のマルチトール水溶液を温度０〜４０℃の範囲まで冷却して過飽和状態にし、種結晶を添加して撹拌しながら微結晶を生成させることによりマルチトールマスキットを調製する方法である、前記第二の発明に記載の流動性の高いマルチトール粉末の製造方法である。
【００２４】
また、第五の本発明は、第一工程および第二工程が連続的な工程である前記第二〜第四の発明の何れか１つに記載の流動性の高いマルチトール粉末の製造方法である。
【００２５】
本発明に用いるマルチトール水溶液は、本発明の条件のもとで良好な状態のマルチトールマスキットを生成する品質が要求されるが、澱粉液化液を通常の糖化条件で調製した高純度マルトースを還元して得たマルチトール純度が８５〜９９．９％で固形分濃度が７０〜９０％、更に好ましくは７３〜８０％、最も好ましくは７５〜７８％の水溶液であれば、おおむね本発明に要求される品質を満足する。
【００２６】
しかし、一般に、糖組成中のマルトトリイトールやマルトテトライトールが少ない場合にはマルチトールの結晶化が阻害されない傾向があるので、結晶化度が高く、性質の安定な製品を得るためには、マルチトール水溶液中の重合度が３や４の成分は少ないほうが好ましい。
【００２７】
マルチトール水溶液中のマルチトール純度が８５％未満の場合には噴霧乾燥後に得られる粉末製品の性質が不安定な場合が多く、マルチトール水溶液中のマルチトール純度が９９．９％を超える場合には本発明に係る方法に記載される条件以外でも粉末を調製することが可能であり、噴霧乾燥後に良好な品質を得られることが多いが、そのマルチトール純度の高い水溶液を調製するコストが極めて高くなりがちなので経済的に不利な場合が多い。
【００２８】
また、マルチトール水溶液の固形分濃度は、配管中を輸送することが可能なマルチトールマスキットを調製し、且つ本発明の条件範囲で噴霧乾燥した場合に生成する粉末が噴霧乾燥機底部において水分２〜７％にするうえで、７０〜９０％の範囲が好ましいが、この固形分濃度が７０％未満の場合にはマスキット中の適切な懸濁結晶量を確保するために強く冷却する必要があって経済的に不利であるなどの不都合があり、また、９０％を超える場合にはマスキットの配管中での輸送やマスキットの貯槽での扱い、その貯槽からの輸送が困難になることなどの不都合がある。
【００２９】
本発明の中で言う懸濁結晶量とは、マスキットの総重量に対する懸濁している固体結晶の重量の割合を百分率で表わしたものを指す。
【００３０】
本発明に係る第一工程でマルチトールマスキットを調製する際には、上記に説明した純度のマルチトール水溶液を固形分濃度７０〜９０％に調整した後、急速に冷却してマルチトールの微細な結晶を生成させるが、冷却する温度としては０〜４５℃、更に好ましくは５〜４０℃が挙げらる。
【００３１】
この際に結晶の生成を促進させる意味でマルチトール水溶液を揺動したり、撹拌したりすることが有利であり、更に強く結晶の生成を促進させるために微細なマルチトール結晶粉末を添加することも有利に採用することができるが、生成したマスキット中の懸濁結晶量が多すぎたり、生成した結晶が大きすぎたりした場合には、マスキットの粘度が高くなって取り扱いが困難になることがあるので、その場合にはマルチトール水溶液や水を加えて懸濁結晶量を調節することも有利に採用することができる。
【００３２】
本発明に係る第一工程におけるマルチトールマスキットの懸濁結晶量は、取り扱いが容易であることと、本発明の効果を得るうえで、つまり、安定な噴霧乾燥条件を得ることや、品質の安定した粉末製品を得ることなどの効果を得るためには、１０〜５０％が好ましいが、２０〜４５％が更に好ましく、３５〜４０％が最も好ましい。
【００３３】
本発明に係る第一工程で得られたマルチトールマスキットは、本発明に係る第二工程において送風温３０〜８０℃の範囲に調節した噴霧乾燥機で水分２〜７％まで乾燥するが、噴霧乾燥機底部に落下した粉末中にこの範囲の水分を残すことが、意外なことに、その後の工程を経て品質の安定な製品を得るうえで極めて重要である。
【００３４】
このとき、噴霧乾燥の際の送風温が３０℃未満の場合には十分な乾燥が達成できず、８０℃を超える場合には乾燥は速やかに進むが噴霧乾燥機の器壁に溶融状態のマルチトール層が形成されることが多いので好ましくない。
【００３５】
通常、糖類を噴霧乾燥する場合には、噴霧乾燥機底部に落下した粉末中に殆ど水分を残さず、その後の熟成工程や乾燥も必要に応じて採用する程度の簡単な処理にするが、予想外なことに、マルチトールにそのような従来の方法を適用しても良好な製品が得られない。
【００３６】
噴霧乾燥機底部で捕集される粉末の水分が２％未満である場合は、その後の工程中を経て得られる流動性の高いマルチトール粉末の結晶化度が低くなる傾向があり、貯蔵中に粒子の形が変形して流動性が低下したり、吸湿性が高くなることがことがあるので良好な品質の粉末が得られず、水分が７％を超える場合には、第三工程でベトつきが残るなどのために取り扱いが困難になるので好ましくない。
【００３７】
更に、本発明に係る第三工程では、第二工程で得られた粉末を温度２５〜６５℃の範囲に調整して熟成したのち乾燥するが、熟成する時の温度が２５℃未満の場合や６５℃を超える場合には何れも結晶化が十分に進行せず、吸湿性などの製品の品質に悪影響を及ぼすことが多いので好ましくない。
【００３８】
また、マルチトールが溶融しない程度の温度や湿度であれば乾燥の方法や条件に格別の制約は無いが、本発明の製品の優れた性質を確保するためには、ロータリーキルン式や回転釜のような方式の機器で水分を１％以下にすることが有利に採用できる。
【００３９】
【実施例】
【００４０】
以下に、実施例、比較例、試験例を掲げて更に具体的に本発明の内容を説明するが、本発明の技術的範囲は以下の例に制限されるものではない。
【００４１】
また、以下の例において、％は特に断らない限り重量％を表わすものとする。
【００４２】
（実施例１）
【００４３】
＜第一工程＞
マルチトール純度が９４．５％の水溶液を固形分濃度７５％に濃縮してから温度１００℃まで加熱した後、マスキット調製槽に入れて、撹拌しながら３０分間で１５℃迄冷却し、マルチトール水溶液の固形分に対して２％の微細なマルチトール結晶粉末を添加し、毎分１０回転のゆっくりとした速度で５時間撹拌し、結晶量３５％のマスキットを得た。
【００４４】
＜第二工程＞
第一工程で得たマルチトールマスキットを、１５℃に保温しながら、直径８ｍのアトマイザー式の噴霧乾燥機に導入し、導入する風温を７０℃にして噴霧乾燥して粉末を得た。
【００４５】
排風温度と噴霧乾燥機底部に落下した粉末の温度は４０℃、水分は５％であった。
【００４６】
＜第三工程＞
第二工程で得られた粉末をバンド冷却機に入れ、温度４０℃にて５時間熟成させて、側面の温度を１００℃に調節したロータリーキルンタイプの乾燥機に１時間滞留させて乾燥し、本発明に係る流動性の高いマルチトールを得た。
【００４７】
得られた製品の水分は０．３％、２０〜５０メッシュの範囲に分級した粉末の安息角は３１°であった。
【００４８】
（実施例２）
【００４９】
＜第一工程＞
実施例１と同じマルチトール水溶液を固形分濃度８６％に濃縮してマスキット調製槽に入れ、毎分１０回転の速度で撹拌しながら温度１２０℃まで加熱した後、１２０分間で２０℃まで冷却し、マルチトール水溶液の固形分に対して２％の微細なマルチトール結晶粉末を添加し、温度を２０℃に保持しながら５時間撹拌を続けた後、濃度５０％に調整した実施例１と同じマルチトール水溶液を加えて全体の濃度が７６％になるように調節し、更に撹拌を５時間続けて結晶量３７％のマスキットを得た。
【００５０】
＜第二工程＞
第一工程で得たマルチトールマスキットを２０℃に保温しながら噴霧乾燥機に導入し、他の条件は実施例１と同様に噴霧乾燥し、噴霧乾燥機底部に落下したときに水分４．９％の粉末を得た。
【００５１】
＜第三工程＞
第二工程で得られた粉末を実施例１と同様にして熟成、乾燥し、水分０．３％、２０〜５０メッシュの範囲に分級した粉末の安息角２９°の、本発明に係る流動性の高いマルチトール粉末を得た。
【００５２】
（実施例３）
【００５３】
第一工程におけるマスキットの濃度調整を水を用いて行った他は実施例２と同様に第一、第二、第三工程を行い、第一工程後に懸濁結晶量３９％のマルチトールマスキットを、第二工程で噴霧乾燥機底部に落下したときに水分４．７％の粉末を、第三工程で水分０．３％、２０〜５０メッシュの範囲に分級した粉末の安息角２８°の、本発明に係る流動性の高いマルチトール粉末をそれぞれ得た。
【００５４】
（実施例４）
【００５５】
＜第一工程＞
マルチトール純度が８９．５％の水溶液を固形分濃度７８％に濃縮してから温度１００℃まで加熱した後、マスキット調製槽に入れて、撹拌しながら３０分間で１５℃迄冷却し、マルチトール水溶液の固形分に対して３％の微細なマルチトール結晶粉末を添加し、毎分１０回転のゆっくりとした速度で３０時間撹拌し、結晶量３４％のマスキットを得た。
【００５６】
＜第二工程＞
第一工程で得たマルチトールマスキットを、１５℃に保温しながら、直径８ｍのアトマイザー式の噴霧乾燥機に導入し、導入する風温を７０℃にして噴霧乾燥して粉末を得た。
【００５７】
排風温度と噴霧乾燥機底部に落下した粉末の温度は４０℃、水分は５．１％であった。
【００５８】
＜第三工程＞
第二工程で得られた粉末をバンド冷却機に入れ、温度４０℃にて１０時間熟成させて、側面の温度を９５℃に調節したロータリーキルンタイプの乾燥機に１時間滞留させて乾燥し、本発明に係る流動性の高いマルチトールを得た。
【００５９】
得られた製品の水分は０．４％であり、２０〜５０メッシュの範囲に分級した粉末の安息角は３３°であった。
【００６０】
（実施例５）
【００６１】
＜第一工程＞
マルチトール純度が８９．５％の水溶液を固形分濃度８７％に濃縮してから温度１００℃まで加熱した後、マスキット調製槽に入れて、撹拌しながら３０分間で１５℃迄冷却し、マルチトール水溶液の固形分に対して３％の微細なマルチトール結晶粉末を添加し、毎分１０回転のゆっくりとした速度で１０時間撹拌しながらマルチトールの微細結晶を析出させ、その後水を加えて全体の固形分濃度が７６％になるように調節して更に１０時間撹拌し、結晶量２８％のマスキットを得た。
【００６２】
＜第二工程＞
第一工程で得たマルチトールマスキットを、１５℃に保温しながら、直径８ｍのアトマイザー式の噴霧乾燥機に導入し、導入する風温を７０℃にして噴霧乾燥して粉末を得た。
【００６３】
排風温度と噴霧乾燥機底部に落下した粉末の温度は４０℃、水分は５．０％であった。
【００６４】
＜第三工程＞
第二工程で得られた粉末をバンド冷却機に入れ、温度４０℃にて１０時間熟成させて、側面の温度を９５℃に調節したロータリーキルンタイプの乾燥機に１時間滞留させて乾燥し、本発明に係る流動性の高いマルチトールを得た。
【００６５】
得られた製品の水分は０．３％であり、２０〜５０メッシュの範囲に分級した粉末の安息角は３２°であった。
【００６６】
（実施例６）
【００６７】
第一工程におけるマスキットの濃度調整を水を用い、各工程への導入と排出の物量をバランスさせて、実施例５の条件を連続的に実施して、それぞれ第一、第二、第三工程を行い、第二工程で噴霧乾燥機底部に落下したときに水分４．８％の粉末を、第三工程で水分０．３％、２０〜５０メッシュの範囲に分級した粉末の安息角３０°の、本発明に係る流動性の高いマルチトール粉末をそれぞれ得た。
【００６８】
【比較例】
【００６９】
（比較例１）
【００７０】
マルチトール純度が８２％の水溶液を固形分濃度８８％に濃縮してから温度１００℃まで加熱した後、マスキット調製槽に入れて、撹拌しながら３０分間で１５℃迄冷却し、マルチトール水溶液の固形分に対して３％の微細なマルチトール結晶粉末を添加し、毎分１０回転のゆっくりとした速度で１０時間撹拌しながらマルチトールの微細結晶を析出させ、その後水を加えて全体の固形分濃度が７６％になるように調節して更に１０時間撹拌し、結晶量５％のマルチトールマスキットを得た。
【００７１】
＜第二工程＞
第一工程で得たマルチトールマスキットを、１５℃に保温しながら、直径８ｍのアトマイザー式の噴霧乾燥機に導入し、導入する風温を７０℃にして噴霧乾燥操作を行ったが、乾燥機の器壁にマルチトールのガラス状粒子が付着してしまい、連続的な操作は不可能であったため、断続的に操作し、器壁に付着した粒子を掻き落とし、回収して粉末を得た。
【００７２】
排風温度と回収した粉末の温度は４０℃、水分は８．０％であった。
【００７３】
＜第三工程＞
第二工程で得られた粉末をバンド冷却機に入れ、温度４０℃にて１０時間熟成させて、側面の温度を９５℃に調節したロータリーキルンタイプの乾燥機に１時間滞留させて乾燥し、マルチトール粉末（比較品１）を得た。
【００７４】
得られた粉末の水分は１．６％であり、２０〜５０メッシュの範囲に分級した粉末の安息角は４３°であった。
【００７５】
（比較例２）
【００７６】
＜第一工程＞
マルチトール純度が８９．５％の水溶液を固形分濃度９３％に濃縮してから温度１２０℃まで加熱した後、マスキット調製槽に入れて、撹拌しながら３０分間で２０℃迄冷却し、マルチトール水溶液の固形分に対して２％の微細なマルチトール結晶粉末を添加し、毎分１０回転のゆっくりとした速度で１５分間撹拌したところ、全体が固化してしまい、その後の第二工程、第三工程の操作が不可能になった。
【００７７】
（比較例３）
【００７８】
＜第一工程＞
マルチトール純度が９４．５％の水溶液を固形分濃度６５％に濃縮してから温度１００℃まで加熱した後、マスキット調製槽に入れて、撹拌しながら３０分間で１０℃迄冷却し、マルチトール水溶液の固形分に対して２％の微細なマルチトール結晶粉末を添加し、毎分１０回転のゆっくりとした速度で５時間撹拌しながらマルチトールの微細結晶を析出させた結果、結晶量７％のマルチトールマスキットを得た。
【００７９】
＜第二工程＞
第一工程で得たマルチトールマスキットを、１０℃に保温しながら、直径８ｍのアトマイザー式の噴霧乾燥機に導入し、導入する風温を７５℃にして噴霧乾燥操作を行ったが、乾燥機の器壁にマルチトールのガラス状粒子が付着してしまい、連続的な操作は不可能であったため、断続的に操作し、器壁に付着した粒子を掻き落とし、回収してマルチトール粉末を得た。
【００８０】
排風温度と回収した粉末の温度は４０℃、水分は７．６％であった。
【００８１】
＜第三工程＞
第二工程で得られた粉末をバンド冷却機に入れ、温度４０℃にて１０時間熟成させて、側面の温度を９５℃に調節したロータリーキルンタイプの乾燥機に１時間滞留させて乾燥し、マルチトール粉末（比較品３）を得た。
【００８２】
得られた粉末の水分は１．４％であり、２０〜５０メッシュの範囲に分級した粉末の安息角は３９°であった。
【００８３】
（比較例４）
【００８４】
実施例１の第一工程で得られたマルチトールマスキットを、風温を８５℃、噴霧乾燥機の底部に落下した粉末の水分０．５％になるように調節して噴霧乾燥した後、実施例１と同様に熟成、乾燥して、水分０．１％、２０〜５０メッシュの範囲に分級した粉末の安息角が３１°のマルチトール粉末を得た（比較品４）。
【００８５】
【試験例】
【００８６】
実施例１〜６で得られた製品と比較例１、３、４で得られた比較品の２０〜５０メッシュに分級した粉末を２５℃、湿度５０％の雰囲気に２日間保存した後安息角を測定した結果を、表１に示す。
【００８７】
【表１】
【発明の効果】
【００８９】
以上に説明したように、本発明に係る流動性の高いマルチトール粉末は、粒径が２０〜５０メッシュの粉末の安息角で表わせば、２５〜３７°の範囲になる性質を有するが、このように高い流動性と低い吸湿性を有することにより、粉末の輸送や自動化が容易になり、従来用いることの困難であった卓上甘味料等の用途にも採用可能である。
【００９０】
更に、本発明は各工程を厳密に管理する方法であって、繁雑な工程の追加などが無いので経済的に優れた方法を提供するものであり、本発明を実施することにより、微細なマルチトール結晶が懸濁した取り扱いの容易なマルチトールマスキットを調製することが可能になり、その結果、輸送や操作中にマスキットが固化することなく、効率が高く連続的な噴霧乾燥操作を安定的に実施することが可能になり、また、本発明に係る噴霧乾燥操作と熟成、乾燥操作によって得られる製品の品質についても、結晶化度が高いことから、低い吸湿性が得られ、その結果、保存後も流動性を失うことが無いという優れた性質を持っている。[0001]
BACKGROUND OF THE INVENTION
[0002]
The present invention relates to maltitol powder having high fluidity and a method for producing the same.
[0003]
[Prior art and problems to be solved by the invention]
[0004]
Maltitol powder is a sugar alcohol produced by catalytic hydrogenation of maltose and pulverizing it. Its sweetness is close to that of sugar, and its sweetness is close to that of other sugar alcohols. Since it is difficult to become caries, it does not cause dental caries and is difficult to digest with human digestive enzymes, so it is widely used by diabetics and people who want to prevent obesity and dental caries.
[0005]
In addition, maltitol powder represented by maltitol crystals has various useful functions such as non-hygroscopicity, stability against heat, etc., does not promote insulin secretion, and has a favorable effect on absorption of various minerals. Therefore, they are not limited to the above-mentioned special uses, and are widely used as materials for general foods, pharmaceuticals, cosmetics, and the like.
[0006]
Currently available maltitol powders are manufactured by a honey-drop method, a block grinding method, a kneader method, or the like, but the maltitol powder manufactured by such a method has a problem of low fluidity.
[0007]
Due to the low fluidity of maltitol powder, there are inconveniences such as difficulty in handling with automated machines, and it is difficult to use for applications that require high fluidity such as tabletop sweeteners. there were.
[0008]
In order to improve such problems, a method for producing maltitol powder by a spray method or a similar technique has also been proposed.
[0009]
As a proposed technique, for example, there is a method introduced in Japanese Patent Application Laid-Open No. 51-32745 and a method introduced in Japanese Patent Application Laid-Open No. 57-134498. Among them, the method introduced in Japanese Patent Application Laid-Open No. 51-32745 is a coating material fine composition in which liquid maltitol concentrated to anhydrous water is sprayed and granulated into a heat-retaining atmosphere by a sprayer, and cooled and stirred without solidifying. In this method, the mixture is dropped and mixed on the powder, and the coated fine powder is adsorbed on the surface of the maltitol particles to be solidified and fixed.
[0010]
Further, the method introduced in JP-A-57-134498 is a dextrin having a composition of 0.8% sorbitol, 92.2% maltitol, 4.6% maltotriitol, maltotetriitol or more. After concentrating the maltitol solution consisting of 2.4% alcohol to 80%, add it to an auxiliary crystal can, add 2% anhydrous crystalline maltitol-containing honey-containing crystal powder, and gradually cool it with stirring from 50 ° C. A mass kit with a 35% discharge rate is obtained, sprayed from a 1.5 mm nozzle on the drying tower at a pressure of 150 kg / cm 2 with a high-pressure pump, and at the same time, hot air of 85 ° C. is blown from the top of the drying tower. The crystal powder collected on the transfer wire mesh conveyor provided at the bottom and gradually moved to the outside of the drying tower while sending hot air of 40 ° C from the bottom of the conveyor to the outside of the drying tower. In short Put out. Next, the crystal powder taken out is charged into an aging tower and aged for 10 hours to complete crystallization and drying, thereby obtaining an anhydrous crystalline maltitol-containing honey-containing crystal powder in a yield of 92%.
[0011]
However, many problems still have to be solved in the above method.
[0012]
For example, in the method of JP-A-51-32745, the obtained powder initially exhibits good fluidity, but the powder is not crystalline but is glassy and extremely hygroscopic. As a result, the fluidity is gradually lost and the fluidity is gradually lost, and other physical properties gradually change.
[0013]
In addition, in the method introduced in Japanese Patent Application Laid-Open No. 57-134498, a mass kit having a crystallization rate of 35% is prepared by adding 2% seed crystals after concentration to 80% and gradually cooling from a temperature of 50 ° C. Therefore, the crystal particles in the mass kit tend to be large, and a mass kit with an appropriate viscosity may not be obtained.Therefore, it is difficult to continue the spray drying operation stably, and in a good condition. Since it is difficult to obtain a mass kit, aging of the obtained powder often takes a long time, and problems such as a tendency to produce a product having a low degree of crystallinity remain.
[0014]
In other words, the production of conventional high fluidity maltitol powder, especially the production by the spray drying method is difficult as compared with other saccharides and sugar alcohols, none of them is performed under appropriate conditions. There was no problem in the properties of the products obtained by that method because continuous production was not possible, and the products obtained by those methods were never put on the market. It was hoped to do.
[0015]
[Means for Solving the Problems]
[0016]
As a result of diligent investigations to solve the above-mentioned problems, the present inventors have found that according to a conventionally available method for producing maltitol powder, particles of individual powders are indefinite with many sharp edges. In addition, it is found that the most important technique in the manufacturing technique by the spray drying method in the manufacturing method of maltitol powder is a method for preparing a mass kit in a good state. After severely limiting the preparation method, spray drying and aging to a state in which moisture remained, and succeeded in producing highly flowable maltitol powder with stable physical properties, and completed the present invention. It was.
[0017]
Means for solving the problems of the present invention are as follows.
[0018]
The present invention relating to the first maltitol powder exhibits the property that the angle of repose of a powder having a particle size of 20-50 mesh is 25-37 ° after being stored for 2 days in an atmosphere of temperature 25 ° C. and humidity 50%. Maltitol powder with high fluidity.
[0019]
In addition, the present invention relating to maltitol powder includes: 1) From a maltitol aqueous solution having a maltitol purity of 85 to 99.9% by weight and a solid content concentration of 70 to 90% by weight, First step for preparing maltitol mass kit, 2) The maltitol mass kit obtained in the first step is introduced into a spray dryer adjusted to a blast temperature of 30 to 80 ° C. and spray-dried, and moisture is 2 to 7 weights. Produced by sequentially passing through three steps: a second step to obtain 3% maltitol powder, and 3) a third step in which the powder obtained in the second step is aged at a temperature of 25 to 65 ° C. and then dried. This is a highly flowable maltitol powder.
[0020]
Furthermore, the present invention relating to maltitol powder includes: 1) From an aqueous maltitol solution having a maltitol purity of 85 to 99.9% by weight and a solid content concentration of 70 to 90% by weight, the amount of suspended crystals is 10 to 50% by weight. First step of preparing a maltitol mass kit of 2) 2) The maltitol mass kit obtained in the first step is introduced into a spray dryer adjusted to an air temperature of 30 to 80 ° C. and spray-dried, and the moisture content is 2 to 7 By sequentially passing through the three steps of the second step of obtaining a weight percent maltitol powder and 3) the third step of aging the powder obtained in the second step at a temperature of 25 to 65 ° C. and then drying. A highly flowable maltitol powder that has been manufactured and stored for 2 days in an atmosphere of a temperature of 25 ° C. and a humidity of 50%, and has a repose angle of 25 to 37 ° of a powder having a particle size of 20 to 50 mesh. is there.
[0021]
The second aspect of the present invention relates to a method for producing a highly flowable maltitol powder,
1) From a maltitol aqueous solution having a maltitol purity of 85 to 99.9% by weight and a solid content concentration of 70 to 90% by weight, seed crystals are added as necessary, and maltitol having a suspended crystal content of 10 to 50% by weight. The first step for preparing the mass kit, 2) The maltitol mass kit obtained in the first step is introduced into a spray dryer adjusted to a blast temperature of 30 to 80 ° C. and spray-dried, and has a moisture content of 2 to 7% by weight. The second step for obtaining maltitol powder, and 3) the third step for drying after the powder obtained in the second step is aged at a temperature of 25 to 65 ° C. This is a method for producing a highly flowable maltitol powder.
[0022]
In the third aspect of the present invention, the first step is to cool an aqueous maltitol solution having a maltitol purity of 85 to 99.9% by weight and a solid content concentration of 70 to 90% by weight to a temperature range of 0 to 40 ° C. The method for producing a highly flowable maltitol powder according to the second invention, which is a method of preparing a maltitol mass kit by making a supersaturated state and applying a stimulus such as stirring or rocking to produce fine crystals. It is.
[0023]
In the fourth aspect of the present invention, the first step is to cool an aqueous maltitol solution having a maltitol purity of 85 to 99.9% by weight and a solid content concentration of 70 to 90% by weight to a temperature range of 0 to 40 ° C. In the method for producing a maltitol powder having high fluidity according to the second invention, which is a method of preparing a maltitol mass kit by making a supersaturated state, adding seed crystals and generating fine crystals while stirring. is there.
[0024]
Moreover, 5th this invention is a manufacturing method of the high fluidity maltitol powder as described in any one of said 2nd-4th invention whose 1st process and 2nd process are continuous processes. is there.
[0025]
The aqueous maltitol solution used in the present invention is required to have a quality that produces a maltitol mass kit in a good state under the conditions of the present invention. However, a high-purity maltose prepared from a starch liquefaction solution under normal saccharification conditions is used. The aqueous solution having a maltitol purity obtained by reduction of 85 to 99.9% and a solid content concentration of 70 to 90%, more preferably 73 to 80%, and most preferably 75 to 78% is generally included in the present invention. Satisfies the required quality.
[0026]
However, in general, when maltotriitol or maltotetriitol in the sugar composition is low, crystallization of maltitol tends not to be inhibited, so to obtain a product with high crystallinity and stable properties. It is preferable that the number of components having a polymerization degree of 3 or 4 in the aqueous maltitol solution is small.
[0027]
When the maltitol purity in the aqueous maltitol solution is less than 85%, the properties of the powder product obtained after spray drying are often unstable, and when the maltitol purity in the aqueous maltitol solution exceeds 99.9% The powder can be prepared under conditions other than those described in the method according to the present invention, and good quality can often be obtained after spray drying, but the cost of preparing an aqueous solution with high maltitol purity is extremely high. It tends to be high and is often economically disadvantageous.
[0028]
Further, the solid content concentration of the maltitol aqueous solution is such that the powder produced when the maltitol mass kit that can be transported in the pipe is prepared and spray-dried within the condition range of the present invention is water content at the bottom of the spray dryer. In order to make it 2 to 7%, the range of 70 to 90% is preferable, but when this solid content concentration is less than 70%, it is necessary to cool strongly in order to secure an appropriate amount of suspended crystals in the mass kit. There are inconveniences such as being economically disadvantageous, and when it exceeds 90%, it is difficult to transport in the piping of the mass kit, handle it in the storage tank of the mass kit, and transport from the storage tank. There is an inconvenience.
[0029]
In the present invention, the amount of suspended crystals refers to the ratio of the weight of solid crystals suspended to the total weight of the mass kit, expressed as a percentage.
[0030]
In preparing the maltitol mass kit in the first step according to the present invention, the maltitol aqueous solution having the purity described above is adjusted to a solid content concentration of 70 to 90%, and then rapidly cooled to finely adjust the maltitol fineness. Although the crystal | crystallization is produced | generated, as temperature to cool, 0-45 degreeC, More preferably, 5-40 degreeC is mentioned.
[0031]
At this time, it is advantageous to shake or stir the aqueous maltitol solution in order to promote the formation of crystals, and to add a fine maltitol crystal powder more strongly to promote the formation of crystals. However, if the amount of suspended crystals in the generated mass kit is too large, or if the generated crystals are too large, the viscosity of the mass kit will increase and handling may become difficult. Therefore, in that case, it is also possible to advantageously employ a maltitol aqueous solution or water to adjust the amount of suspended crystals.
[0032]
The amount of suspended crystals of the maltitol mass kit in the first step according to the present invention is easy to handle, and in order to obtain the effects of the present invention, that is, to obtain stable spray drying conditions, In order to obtain an effect such as obtaining a stable powder product, 10 to 50% is preferable, but 20 to 45% is more preferable, and 35 to 40% is most preferable.
[0033]
The maltitol mass kit obtained in the first step according to the present invention is dried to a moisture content of 2 to 7% with a spray dryer adjusted to a range of 30 to 80 ° C. in the second step according to the present invention. Surprisingly, it is extremely important to leave this range of moisture in the powder falling on the bottom of the spray dryer in order to obtain a stable product through the subsequent steps.
[0034]
At this time, if the air temperature during spray drying is less than 30 ° C., sufficient drying cannot be achieved, and if it exceeds 80 ° C., the drying proceeds quickly, but the molten multi-layer is formed on the wall of the spray dryer. Since a tall layer is often formed, it is not preferable.
[0035]
Normally when sugars are spray-dried, there is little moisture left in the powder that has fallen to the bottom of the spray dryer, and the subsequent aging process and drying should be simple enough to be used as needed. In addition, good products cannot be obtained by applying such conventional methods to maltitol.
[0036]
When the water content of the powder collected at the bottom of the spray dryer is less than 2%, the crystallinity of the highly fluid maltitol powder obtained through the subsequent process tends to be low, and during storage If the shape of the particles is deformed and the fluidity may be lowered or the hygroscopicity may be increased, a good quality powder cannot be obtained. It is not preferable because it is difficult to handle due to remaining sticking.
[0037]
Furthermore, in the third step according to the present invention, the powder obtained in the second step is dried after being adjusted to a temperature in the range of 25 to 65 ° C. When the temperature at the time of aging is less than 25 ° C. When the temperature exceeds 65 ° C., crystallization does not proceed sufficiently, which is not preferable because it often adversely affects the product quality such as hygroscopicity.
[0038]
In addition, if the temperature and humidity are such that maltitol does not melt, there are no particular restrictions on the drying method and conditions, but in order to ensure the excellent properties of the product of the present invention, a rotary kiln type or rotary kettle is used. It can be advantageously employed to reduce the water content to 1% or less with a simple apparatus.
[0039]
【Example】
[0040]
Hereinafter, the contents of the present invention will be described more specifically with reference to examples, comparative examples, and test examples. However, the technical scope of the present invention is not limited to the following examples.
[0041]
In the following examples, “%” represents “% by weight” unless otherwise specified.
[0042]
Example 1
[0043]
<First step>
After concentrating an aqueous solution with a maltitol purity of 94.5% to a solid content concentration of 75% and heating to a temperature of 100 ° C, it is placed in a mass kit preparation tank and cooled to 15 ° C over 30 minutes with stirring. A 2% fine maltitol crystal powder was added to the solid content of the aqueous solution and stirred at a slow speed of 10 revolutions per minute for 5 hours to obtain a mass kit with a crystal content of 35%.
[0044]
<Second step>
The maltitol mass kit obtained in the first step was introduced into an atomizer type spray dryer having a diameter of 8 m while keeping the temperature at 15 ° C., and the introduced air temperature was set to 70 ° C. and spray dried to obtain a powder.
[0045]
The temperature of the exhaust air and the temperature of the powder falling on the bottom of the spray dryer were 40 ° C., and the water content was 5%.
[0046]
<Third step>
The powder obtained in the second step is put in a band cooler, aged at 40 ° C. for 5 hours, and kept in a rotary kiln type dryer whose side surface temperature is adjusted to 100 ° C. for 1 hour to be dried. A highly fluid maltitol according to the invention was obtained.
[0047]
The obtained product had a moisture content of 0.3%, and the repose angle of the powder classified into the range of 20 to 50 mesh was 31 °.
[0048]
(Example 2)
[0049]
<First step>
The same maltitol aqueous solution as in Example 1 was concentrated to a solid content concentration of 86%, placed in a mass kit preparation tank, heated to 120 ° C. with stirring at a speed of 10 revolutions per minute, and then cooled to 20 ° C. in 120 minutes. The same as Example 1 in which 2% fine maltitol crystal powder was added to the solid content of the maltitol aqueous solution, the stirring was continued for 5 hours while maintaining the temperature at 20 ° C., and the concentration was adjusted to 50%. An aqueous maltitol solution was added to adjust the total concentration to 76%, and stirring was further continued for 5 hours to obtain a mass kit having a crystal content of 37%.
[0050]
<Second step>
The maltitol mass kit obtained in the first step was introduced into a spray dryer while keeping the temperature at 20 ° C., and the other conditions were spray-dried in the same manner as in Example 1, and when dropped to the bottom of the spray dryer, the moisture content was 4. 9% powder was obtained.
[0051]
<Third step>
The powder obtained in the second step was aged and dried in the same manner as in Example 1, and the fluidity of the powder according to the present invention having an angle of repose of 29 ° was classified into a range of moisture 0.3% and 20-50 mesh. High maltitol powder was obtained.
[0052]
(Example 3)
[0053]
Maltitol mass kit with 39% suspended crystal after the first step, except that the concentration adjustment of the mass kit in the first step was performed using water, as in Example 2. When the powder drops to the bottom of the spray dryer in the second step, the powder with a moisture content of 4.7% is classified into a moisture content of 0.3% and a range of 20 to 50 mesh in the third step. Each of the highly fluid maltitol powders according to the present invention was obtained.
[0054]
Example 4
[0055]
<First step>
After concentrating an aqueous solution having a maltitol purity of 89.5% to a solid content concentration of 78%, heating to a temperature of 100 ° C, placing it in a mass kit preparation tank, cooling to 15 ° C over 30 minutes with stirring, and maltitol 3% fine maltitol crystal powder with respect to the solid content of the aqueous solution was added and stirred at a slow speed of 10 revolutions per minute for 30 hours to obtain a mass kit with a crystal content of 34%.
[0056]
<Second step>
The maltitol mass kit obtained in the first step was introduced into an atomizer type spray dryer having a diameter of 8 m while keeping the temperature at 15 ° C., and the introduced air temperature was set to 70 ° C. and spray dried to obtain a powder.
[0057]
The temperature of the exhaust air and the temperature of the powder dropped on the bottom of the spray dryer were 40 ° C., and the moisture content was 5.1%.
[0058]
<Third step>
The powder obtained in the second step is put in a band cooler, aged at a temperature of 40 ° C. for 10 hours, kept in a rotary kiln type dryer whose side surface temperature is adjusted to 95 ° C. for 1 hour and dried. A highly fluid maltitol according to the invention was obtained.
[0059]
The water content of the obtained product was 0.4%, and the angle of repose of the powder classified into the range of 20 to 50 mesh was 33 °.
[0060]
(Example 5)
[0061]
<First step>
After concentrating an aqueous solution having a maltitol purity of 89.5% to a solid content concentration of 87% and heating to a temperature of 100 ° C, it is placed in a mass kit preparation tank and cooled to 15 ° C over 30 minutes with stirring. Add 3% fine maltitol crystal powder to the solid content of the aqueous solution, precipitate maltitol fine crystals while stirring for 10 hours at a slow speed of 10 revolutions per minute, and then add water to the whole The solid content concentration was adjusted to 76%, and the mixture was further stirred for 10 hours to obtain a mass kit having a crystal content of 28%.
[0062]
<Second step>
The maltitol mass kit obtained in the first step was introduced into an atomizer type spray dryer having a diameter of 8 m while keeping the temperature at 15 ° C., and the introduced air temperature was set to 70 ° C. and spray dried to obtain a powder.
[0063]
The exhaust air temperature and the temperature of the powder dropped on the bottom of the spray dryer were 40 ° C. and the moisture content was 5.0%.
[0064]
<Third step>
The powder obtained in the second step is put in a band cooler, aged at a temperature of 40 ° C. for 10 hours, kept in a rotary kiln type dryer whose side surface temperature is adjusted to 95 ° C. for 1 hour and dried. A highly fluid maltitol according to the invention was obtained.
[0065]
The water content of the obtained product was 0.3%, and the angle of repose of the powder classified into the range of 20 to 50 mesh was 32 °.
[0066]
(Example 6)
[0067]
The concentration adjustment of the mass kit in the first step is carried out using water, the amount introduced and discharged in each step is balanced, and the conditions of Example 5 are continuously carried out, and the first, second and third steps, respectively. The angle of repose of the powder was 4.8% when it was dropped on the bottom of the spray dryer in the second step, and the powder was classified into a range of 0.3% moisture and 20 to 50 mesh in the third step. Each of the high fluidity maltitol powders according to the present invention was obtained.
[0068]
[Comparative example]
[0069]
(Comparative Example 1)
[0070]
After concentrating an aqueous solution having a maltitol purity of 82% to a solid content concentration of 88% and heating to a temperature of 100 ° C, it is placed in a mass kit preparation tank and cooled to 15 ° C over 30 minutes with stirring. Add 3% fine maltitol crystal powder to the solid content and precipitate maltitol fine crystals with stirring at a slow speed of 10 revolutions per minute for 10 hours. The partial concentration was adjusted to 76%, and the mixture was further stirred for 10 hours to obtain a maltitol mass kit having a crystal content of 5%.
[0071]
<Second step>
The maltitol mass kit obtained in the first step was introduced into an atomizer type spray dryer having a diameter of 8 m while keeping the temperature at 15 ° C., and the air temperature to be introduced was set to 70 ° C. and the spray drying operation was performed. Since maltitol glassy particles adhered to the machine wall of the machine and continuous operation was impossible, the powder was collected by scraping and collecting the particles adhering to the machine wall intermittently. It was.
[0072]
The exhaust air temperature and the temperature of the recovered powder were 40 ° C., and the water content was 8.0%.
[0073]
<Third step>
The powder obtained in the second step is put into a band cooler, aged at 40 ° C. for 10 hours, dried in a rotary kiln type dryer whose side surface temperature is adjusted to 95 ° C. for 1 hour, and dried. A tall powder (Comparative product 1) was obtained.
[0074]
The water content of the obtained powder was 1.6%, and the repose angle of the powder classified into the range of 20 to 50 mesh was 43 °.
[0075]
(Comparative Example 2)
[0076]
<First step>
After concentrating an aqueous solution with a maltitol purity of 89.5% to a solid content of 93% and heating to a temperature of 120 ° C, it is placed in a mass kit preparation tank and cooled to 20 ° C with stirring for 30 minutes. When 2% fine maltitol crystal powder was added to the solid content of the aqueous solution and stirred for 15 minutes at a slow speed of 10 revolutions per minute, the whole solidified, and the subsequent second step, Three-step operation became impossible.
[0077]
(Comparative Example 3)
[0078]
<First step>
After concentrating an aqueous solution with a maltitol purity of 94.5% to a solid content concentration of 65% and heating to a temperature of 100 ° C, it is placed in a mass kit preparation tank and cooled to 10 ° C over 30 minutes with stirring. As a result of adding 2% fine maltitol crystal powder to the solid content of the aqueous solution and precipitating maltitol fine crystals while stirring at a slow speed of 10 revolutions per minute for 5 hours, the crystal content was 7%. The maltitol mass kit was obtained.
[0079]
<Second step>
The maltitol mass kit obtained in the first step was introduced into an atomizer type spray dryer having a diameter of 8 m while keeping the temperature at 10 ° C., and the air temperature to be introduced was set to 75 ° C., and the spray drying operation was performed. Since maltitol glassy particles adhered to the machine wall of the machine and continuous operation was impossible, the particles adhered to the machine wall were scraped and recovered intermittently, and maltitol powder was collected. Got.
[0080]
The exhaust air temperature and the temperature of the recovered powder were 40 ° C. and the water content was 7.6%.
[0081]
<Third step>
The powder obtained in the second step is put into a band cooler, aged at 40 ° C. for 10 hours, dried in a rotary kiln type dryer whose side surface temperature is adjusted to 95 ° C. for 1 hour, and dried. A tall powder (Comparative product 3) was obtained.
[0082]
The water content of the obtained powder was 1.4%, and the angle of repose of the powder classified into the range of 20 to 50 mesh was 39 °.
[0083]
(Comparative Example 4)
[0084]
After the maltitol mass kit obtained in the first step of Example 1 was spray dried by adjusting the air temperature to 85 ° C. so that the water content of the powder dropped on the bottom of the spray dryer was 0.5%, It was aged and dried in the same manner as in Example 1 to obtain a maltitol powder having a repose angle of 31 ° and a powder classified into a range of moisture 0.1% and 20-50 mesh (Comparative Product 4).
[0085]
[Test example]
[0086]
The angle of repose after storing the product obtained in Examples 1 to 6 and the comparative product obtained in Comparative Examples 1, 3 and 4 to 20 to 50 mesh in an atmosphere of 25 ° C. and 50% humidity for 2 days. The results of measuring are shown in Table 1.
[0087]
[Table 1]
【The invention's effect】
[0089]
As described above, the highly fluid maltitol powder according to the present invention has a property that the particle diameter is in the range of 25 to 37 ° when expressed by the angle of repose of the powder having a particle size of 20 to 50 mesh. By having such high fluidity and low hygroscopicity, the powder can be easily transported and automated, and can be used for tabletop sweeteners that have been difficult to use in the past.
[0090]
Further, the present invention is a method for strictly managing each process, and provides an economically excellent method because there is no addition of complicated processes. An easy-to-handle maltitol mass kit with suspended tall crystals can be prepared. As a result, the mass kit does not solidify during transportation and operation, and the efficient and stable spray drying operation is stable. In addition, the quality of the product obtained by the spray drying operation and the aging and drying operation according to the present invention is also high, so that a low hygroscopicity is obtained. It has an excellent property that it does not lose its fluidity after storage.
Claims (6)
２）第一工程で得られたマルチトールマスキットを送風温３０〜８０℃に調節した噴霧乾燥機に導入して噴霧乾燥し、水分２〜７重量％のマルチトール粉末を得る第二工程、
３）第二工程で得られた粉末を温度２５〜６５℃にて熟成したのち乾燥する第三工程、
の３工程を逐次的に経由することにより製造された、流動性の高い結晶性マルチトール粉末。1) A first step of preparing a maltitol mass kit having a suspended crystal content of 10 to 50% by weight from a maltitol aqueous solution having a maltitol purity of 85 to 99.9% by weight and a solid content concentration of 70 to 90% by weight;
2) The second step in which the maltitol mass kit obtained in the first step is introduced into a spray dryer adjusted to a blast temperature of 30 to 80 ° C. and spray-dried to obtain a maltitol powder having a moisture content of 2 to 7% by weight,
3) A third step in which the powder obtained in the second step is aged at a temperature of 25 to 65 ° C. and then dried.
Highly fluid crystalline maltitol powder produced by sequentially passing through the three steps.
１）マルチトール純度が８５〜９９．９重量％で固形分濃度が７０〜９０重量％のマルチトール水溶液から、懸濁結晶量１０〜５０重量％のマルチトールマスキットを調製する第一工程、
２）第一工程で得られたマルチトールマスキットを送風温３０〜８０℃に調節した噴霧乾燥機に導入して噴霧乾燥し、水分２〜７重量％のマルチトール粉末を得る第二工程、
３）第二工程で得られた粉末を温度２５〜６５℃にて熟成したのち乾燥する第三工程、
の３工程を逐次的に経由することを特徴とする流動性の高い結晶性マルチトール粉末の製造方法。In a method for producing a highly flowable maltitol powder,
1) a first step of preparing a maltitol mass kit having a suspended crystal content of 10 to 50% by weight from a maltitol aqueous solution having a maltitol purity of 85 to 99.9% by weight and a solid content concentration of 70 to 90% by weight;
2) The second step in which the maltitol mass kit obtained in the first step is introduced into a spray dryer adjusted to a blast temperature of 30 to 80 ° C. and spray-dried to obtain a maltitol powder having a moisture content of 2 to 7% by weight,
3) A third step in which the powder obtained in the second step is aged at a temperature of 25 to 65 ° C. and then dried.
A process for producing crystalline maltitol powder having high fluidity, characterized by sequentially passing through these three steps.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP29731795A JP3955087B2 (en) | 1995-10-23 | 1995-10-23 | Highly flowable maltitol powder and method for producing the same |
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| JP29731795A JP3955087B2 (en) | 1995-10-23 | 1995-10-23 | Highly flowable maltitol powder and method for producing the same |
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| JPH09110891A JPH09110891A (en) | 1997-04-28 |
| JP3955087B2 true JP3955087B2 (en) | 2007-08-08 |
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| KR100870328B1 (en) * | 2001-08-22 | 2008-11-25 | 가부시끼가이샤 하야시바라 세이부쓰 가가꾸 겐꾸조 | Powder comprising water-containing ?-maltose crystals and production process and use thereof |
| FI20021312A (en) | 2002-07-03 | 2004-01-04 | Danisco Sweeteners Oy | Crystallization of polyol compositions, crystalline composite polyol product and its use |
| US20080097085A1 (en) * | 2004-08-25 | 2008-04-24 | Towa Chemical Industry Co., Ltd. | Crystalline Maltitol Powder Less Prone to Consolidation and Method for Production Thereof |
| DE102006022506A1 (en) * | 2006-05-08 | 2007-11-15 | Südzucker AG Mannheim/Ochsenfurt | Isomaltulose with improved flowability |
| FR2927810B1 (en) * | 2008-02-22 | 2013-07-26 | Roquette Freres | CRYSTALLIZED LARGE GRANULOMETRY MALTITOL POWDER, PROCESS FOR PRODUCING THE SAME AND ITS APPLICATIONS, IN PARTICULAR CHOCOLATE |
| JP2021106571A (en) * | 2019-12-27 | 2021-07-29 | 三井製糖株式会社 | Method for producing granule, and granule |
| JP7197743B1 (en) * | 2022-07-15 | 2022-12-27 | Ｄｍ三井製糖株式会社 | Method for producing granules and granules |
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