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公开(公告)号：DE3572691D1
公开(公告)日：1989-10-05
申请号：DE3572691
申请日：1985-11-11
Applicant: STAMICARBON
Abstract: @ The invention relates to a process for the preparation of L-a-amino acid and D-a-amino acid amide from DL-a-aminoacid amide by contacting the DL-a-amino acid amide in an aqueous solution with an a-amino acyl amidase containing preparation obtained from a culture of Pseudomonas putida in the presence of traces of bivalent metal ions as activator, characterized in that the aqueous solution also contains a potassium salt selected from the group consisting of potassium sulphate and potassium chloride.The invention further relates to a process for the preparation of a L-α-amino acid and D-α-amino acid amide starting from the corresponding aldehyde, potassium cyanide and ammoniumsulphate, subsequent treatment with a ketone and potassiumhydroxide and finally subjecting to enzymatic hydrolysis with a preparation obtained from Pseudomonas putida.
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公开(公告)号：DK526385D0
公开(公告)日：1985-11-14
申请号：DK526385
申请日：1985-11-14
Applicant: STAMICARBON
Inventor： KERKHOFFS PIETER LAURENS , BOESTEN WILHELMUS H J
Abstract: @ The invention relates to a process for the preparation of L-a-amino acid and D-a-amino acid amide from DL-a-aminoacid amide by contacting the DL-a-amino acid amide in an aqueous solution with an a-amino acyl amidase containing preparation obtained from a culture of Pseudomonas putida in the presence of traces of bivalent metal ions as activator, characterized in that the aqueous solution also contains a potassium salt selected from the group consisting of potassium sulphate and potassium chloride.The invention further relates to a process for the preparation of a L-α-amino acid and D-α-amino acid amide starting from the corresponding aldehyde, potassium cyanide and ammoniumsulphate, subsequent treatment with a ketone and potassiumhydroxide and finally subjecting to enzymatic hydrolysis with a preparation obtained from Pseudomonas putida.
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公开(公告)号：BE583370A
公开(公告)日：1960-04-07
申请号：BE583370
申请日：1959-10-07
Applicant: STAMICARBON
Inventor： OTTENHEYM JOHANNES HUBERTUS , KERKHOFFS PIETER LAURENS
IPC: C07D20060101 , C07D
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公开(公告)号：DK161337C
公开(公告)日：1991-12-09
申请号：DK526385
申请日：1985-11-14
Applicant: STAMICARBON
Abstract: @ The invention relates to a process for the preparation of L-a-amino acid and D-a-amino acid amide from DL-a-aminoacid amide by contacting the DL-a-amino acid amide in an aqueous solution with an a-amino acyl amidase containing preparation obtained from a culture of Pseudomonas putida in the presence of traces of bivalent metal ions as activator, characterized in that the aqueous solution also contains a potassium salt selected from the group consisting of potassium sulphate and potassium chloride.The invention further relates to a process for the preparation of a L-α-amino acid and D-α-amino acid amide starting from the corresponding aldehyde, potassium cyanide and ammoniumsulphate, subsequent treatment with a ketone and potassiumhydroxide and finally subjecting to enzymatic hydrolysis with a preparation obtained from Pseudomonas putida.
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Patent Agency Ranking
公开(公告)号：DE3161176D1
公开(公告)日：1983-11-17
申请号：DE3161176
申请日：1981-06-26
Applicant: STAMICARBON
Abstract: Enzyme preparations are obtained from Aspergillus phoenicis having high inulinase activity, a very low Michaelis constant, thermal stability, optimum inulinase activity across a wide pH range, and little sensitivity to heavy metal ion inhibition. The enzyme may be immobilized on an organic macroporous polymer or in an alginate gel.
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公开(公告)号：FR2474053A1
公开(公告)日：1981-07-24
申请号：FR8101145
申请日：1981-01-22
Applicant: STAMICARBON
Abstract: Prodn. of fructose (I) is carried out by (a) extracting inulin (II) from the dried roots of chicory (Chicorium intybus var. foliosum) and (b) hydrolysing (II) to (I) in an aq. medium. Chicory roots are an inexpensive by-prod. which is available for 7-8 months of the year on a commercial scale; they generally contain 6-10 wt.% (II). The roots remaining after cutting the 2nd-year growth (chicons) are washed, comminuted, and extracted with water. The aq. extract is then hydrolysed with an acid or esp. with an inulinase enzyme (e.g. derived from Saccharomyces fragilis or Fusarium roseum). (I) can be recovered in solid form by evapn. and/or crystallisation, or it can be used as a conc. aq. soln. Fl.
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公开(公告)号：DK161337B
公开(公告)日：1991-06-24
申请号：DK526385
申请日：1985-11-14
Applicant: STAMICARBON
Abstract: @ The invention relates to a process for the preparation of L-a-amino acid and D-a-amino acid amide from DL-a-aminoacid amide by contacting the DL-a-amino acid amide in an aqueous solution with an a-amino acyl amidase containing preparation obtained from a culture of Pseudomonas putida in the presence of traces of bivalent metal ions as activator, characterized in that the aqueous solution also contains a potassium salt selected from the group consisting of potassium sulphate and potassium chloride.The invention further relates to a process for the preparation of a L-α-amino acid and D-α-amino acid amide starting from the corresponding aldehyde, potassium cyanide and ammoniumsulphate, subsequent treatment with a ketone and potassiumhydroxide and finally subjecting to enzymatic hydrolysis with a preparation obtained from Pseudomonas putida.
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公开(公告)号：AT45982T
公开(公告)日：1989-09-15
申请号：AT85201842
申请日：1985-11-11
Applicant: STAMICARBON
Abstract: @ The invention relates to a process for the preparation of L-a-amino acid and D-a-amino acid amide from DL-a-aminoacid amide by contacting the DL-a-amino acid amide in an aqueous solution with an a-amino acyl amidase containing preparation obtained from a culture of Pseudomonas putida in the presence of traces of bivalent metal ions as activator, characterized in that the aqueous solution also contains a potassium salt selected from the group consisting of potassium sulphate and potassium chloride.The invention further relates to a process for the preparation of a L-α-amino acid and D-α-amino acid amide starting from the corresponding aldehyde, potassium cyanide and ammoniumsulphate, subsequent treatment with a ketone and potassiumhydroxide and finally subjecting to enzymatic hydrolysis with a preparation obtained from Pseudomonas putida.
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