JP2022500226A - ナノポア澱粉基吸着剤及びその製造方法 - Google Patents
ナノポア澱粉基吸着剤及びその製造方法 Download PDFInfo
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Abstract
Description
2価以上の金属塩と澱粉とを10-50℃、pH5−9の条件下で30-360分間浴水混合する。2価以上の金属塩と澱粉との質量比は0.05-0.6g/gであり、澱粉濃度は50-200g/Lである。後にスクリーニング洗浄して水酸基の酸素原子が金属イオンと結合した加工澱粉を得る。
工程(A1)の中の水酸基イオン化した加工澱粉を20−45℃の水溶液中に入れ、更にゼロ価鉄粒子Fe0Psを加え、5-15分間撹拌混合した後、加工された澱粉の色が黄褐色に変化するのを待つ。
2価以上の金属塩と澱粉とを10-50℃、pH5−9の条件下で30-360分間浴水混合する。2価以上の金属塩と澱粉との質量比は0.05-0.6g/gであり、澱粉濃度は50-200g/Lである。後にスクリーニング洗浄して水酸基の酸素原子が金属イオンと結合した加工澱粉を得る。
工程(B1)の水酸基イオン化した加工澱粉を20−45℃の水溶液中に入れ、更にゼロ価鉄粒子Fe0 Psを加え、5-15分間撹拌混合した後、加工された澱粉の色が黄褐色に変化するのを待つ。ここで、前記澱粉水溶液の体積分率は100-800g/Lである。
2価以上の金属塩と澱粉とを10-50℃、pH5−9の条件下で30-360分間浴水混合する。2価以上の金属塩と澱粉との質量比は0.05-0.6g/gであり、澱粉濃度は50-200g/Lである。後にスクリーニング洗浄して水酸基の酸素原子が金属イオンと結合した加工澱粉を得る。
工程(C1)の中の水酸基イオン化した加工澱粉を20−45℃の水溶液中に入れ、更にゼロ価鉄粒子Fe0Psを加え、5-15分間撹拌混合した後、加工された澱粉の色が黄褐色に変化するのを待つ。
ナノポア澱粉基吸着剤であって、その製造方法は次のような工程を含む。
亜鉛の水酸基イオン化を行っていない加工澱粉を室温25℃の水溶液中に入れ(澱粉体積分率600g/L)、更に平均粒径26μmのゼロ価鉄粒子Fe0Psを加え(Fe0と加工澱粉との質量比は0.2g/g)、10分間撹拌混合した後、澱粉の色には変化がなかった。
(1)亜鉛金属塩とトウモロコシ澱粉とを、0.2g/gの質量比で35℃、pH6.5の条件下で360分間浴水(澱粉体積分率250g/L)混合し、後にスクリーニング洗浄して水酸基の酸素原子が金属亜鉛イオンと結合した加工澱粉を得た。
ナノポア澱粉基磁性吸着剤であって、その製造方法は次のような工程を含む。
ナノポア澱粉基磁性吸着剤であって、その製造方法は次のような工程を含む。
ナノポア澱粉基磁性吸着剤であって、その製造方法は次のような工程を含む。
Claims (10)
- ナノポア澱粉基吸着剤の製造方法であって、当該方法は、少なくとも、
(1)水酸基イオン化処理後の澱粉水溶液にゼロ価金属粒子Iを加え、澱粉表面の無機化を引き起こし、澱粉粒子表面にシート状の無機化結晶体を形成する工程、及び、
(2)無機化された澱粉とアミラーゼ製剤とを混合した後、酵素スクリュー押出によってナノポア構造を有する澱粉基吸着材を形成する工程を含むナノポア澱粉基吸着剤の製造方法。 - 前記工程(1)における表面の無機化処理は、少なくとも、
(1.1)澱粉を水酸基イオン化処理する工程、具体的には、2価以上の金属塩と澱粉とを10-50℃、pH5−9の条件下で30-360分間浴水混合し、後にスクリーニング洗浄して水酸基の酸素原子が金属イオンと結合した加工澱粉を得る工程であって、前記2価以上の金属塩は、マグネシウム、カルシウム、ストロンチウム、バリウム、チタン、ジルコニウム、クロム、モリブデン、マンガン、コバルト、ニッケル、銅、亜鉛、アルミニウムの中の一種又は複数である工程と、
(1.2)水酸基をイオン化した澱粉とゼロ価金属粒子Iとを混合し、ゼロ価金属粒子Iが電子を失って金属イオンを形成し、金属イオンと澱粉のイオン化水酸基とが原位置で複合し、澱粉表面の無機化を引き起こす工程とを含むことを特徴とする請求項1に記載の製造方法。 - 工程(2)の無機化過程において、機能的なゼロ価金属粒子IIを更に加え(例えば:ゼロ価鉄粒子Fe0Ps)、前記澱粉とゼロ価金属粒子IIとの質量比が100:2〜50であることを特徴とする請求項1に記載の製造方法。
- (A1)2価以上の金属塩と澱粉とを10-50℃、pH5−9の条件下で30-360分間浴水混合し、2価以上の金属塩と澱粉との質量比は0.05-0.6g/gであり、澱粉濃度は50-200g/Lであり、後にスクリーニング洗浄して水酸基の酸素原子が金属イオンと結合した加工澱粉を得る澱粉水酸基のイオン化工程、
(A2)工程(A1)の中の水酸基イオン化した加工澱粉を20−45℃の水溶液中に入れ、更にゼロ価鉄粒子Fe0Psを加え、5-15分間撹拌混合した後、加工された澱粉の色が黄褐色に変化するのを待つ工程であって、前記澱粉水溶液の体積分率は100-800g/Lである加工澱粉無機化工程、
(A3)スクリーニングして、低温で乾燥させる(30−45℃)工程、及び、
(A4)工程(A3)で乾燥させた後の産物にアミラーゼ製剤による予備調節を加え、この混合物を押出機内に入れて、反応後に排出して、前記のナノポア澱粉基磁性吸着剤を作製する酵素押出による澱粉ナノポア形成工程とを含むことを特徴とする請求項3に記載の製造方法。 - (B1)2価以上の金属塩と澱粉とを10-50℃、pH5−9の条件下で30-360分間浴水混合し、2価以上の金属塩と澱粉との質量比は0.05-0.6g/gであり、澱粉濃度は50-200g/Lであり、後にスクリーニング洗浄して水酸基の酸素原子が金属イオンと結合した加工澱粉を得る澱粉水酸基のイオン化工程、
(B2)工程(B1)の中の水酸基イオン化した加工澱粉を20−45℃の水溶液中に入れ、更にゼロ価鉄粒子Fe0Psを加え、5-15分間撹拌混合した後、加工された澱粉の色が黄褐色に変化するのを待つ加工澱粉無機化工程、
(B3)磁石に余分なFe0Psを吸着させ、スクリーニングして、低温で乾燥させる(30−45℃)工程、及び、
(B4)工程(B3)で乾燥させた後の産物にアミラーゼ製剤による予備調節を加え、この混合物を押出機内に入れて、予備押出反応を行わせ、予備押出した後にFe0Psを加えて連続押出反応を行わせて、反応後に排出して、前記ナノポア澱粉基磁性吸着剤を作製する酵素押出による澱粉ナノポア形成工程とを含むことを特徴とする請求項3に記載の製造方法。 - 前記ゼロ価鉄粒子Fe0Psの平均粒径範囲は50nm-100μmであることを特徴とする請求項4又は5に記載の澱粉基吸着剤の製造方法。
- 前記アミラーゼ系製剤は、耐高温α-アミラーゼ、中温α-アミラーゼ、β-アミラーゼ、プルラナーゼ、イソアミラーゼの一種又は複数であることを特徴とする請求項4又は5に記載の澱粉基吸着剤の製造方法。
- アミラーゼ製剤による予備調節後の混合物の予備調節の湿度は26-52wt%で、酵素の含有量は0.01-1.5%で、pHは4.5-9.5であることを特徴とする請求項4又は5に記載の澱粉基吸着剤の製造方法。
- 酵素押出の操作パラメータは、押出温度50−120℃、スクリュー回転速度30−400rpmで、押出処理時間が2−15minに抑えられるように決定することを特徴とする請求項4に記載の澱粉基吸着剤の製造方法。
- 澱粉基吸着剤の製造方法であって、酵素押出の操作パラメータは、押出温度50−120℃、スクリュー回転速度30−400rpmで、予備押出段階での押出処理の押出処理時間が1-6minに抑えられ、再連続押出段階での材料の押出処理時間が1−9minに抑えるように決定することを特徴とする請求項5に記載の澱粉基吸着剤の製造方法。
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