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XV. Hydrolases immobilized on Biozan R (1984)

Simionescu, Cr. ; Dumitriu, S. ; Popa, M. ; [et al.]

Springer

Colloid & polymer science 262 (1984), S. 705-711

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ISSN: 1435-1536

Keywords: Bioactive polymers ; Biozan R ; Immobilized enzymes ; Invertase ; Amyloglucosidase

Source: Springer Online Journal Archives 1860-2000

Topics: Chemistry and Pharmacology , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics

Notes: Abstract In the present paper the immobilization of invertase and amyloglucosidase on Biozan R with dicyclohexylcarbodiimide as a catalyst is studied. The influence of some factors on the coupling reaction (duration, enzyme/support and catalyst/support ratios) as well on the acitvity of the coupled enzyme in followed. For both systems under study the value of the Michaelis-Menten constant is higher for the coupled enzyme than for the free one.

Type of Medium: Electronic Resource

URL: http://dx.doi.org/10.1007/BF01451542

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Polymerization of acetylenic derivatives. XXVII. Synthesis and properties of isomeric poly-N-ethynylcarbazoleFor Part XXVI of this series see Simionescu, Dumitrescu, and Grigoraş. (1977)

Dumitrescu, Svetlana ; Percec, V. ; Simionescu, Cr. I.

New York : Wiley-Blackwell

Journal of Polymer Science: Polymer Chemistry Edition 15 (1977), S. 2893-2907

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ISSN: 0360-6376

Keywords: Physics ; Polymer and Materials Science

Source: Wiley InterScience Backfile Collection 1832-2000

Topics: Chemistry and Pharmacology

Notes: Poly-N-ethynylcarbazole (PEC) was prepared thermally, by using Ziegler-Natta catalysts, and also by using TiCl4 and phosphine complexes for initiation. The spectral data (infrared, NMR, x-ray diffraction, and ultraviolet) were best interpreted based on a cis-transoidal/cis-cisoidal stereoblock structure for (both soluble and insoluble) polymers prepared by Ziegler-Natta catalysts and on a trans-cisoidal structure for the polymers prepared with the other catalysts. The cis-transoidal/cis-cisoidal stereoblock structure isomerized thermally into a trans-cisoidal structure, at temperatures which were dependent on the type of initiation.

Additional Material: 7 Ill.