Zobrazeno 1 - 10
of 17
pro vyhledávání: '"Claes Melander"'
Autor:
Claes Melander, Kristoffer Tømmeraas
Publikováno v:
Carbohydrate Polymers. 82:874-879
In this work, a novel procedure for hydrolysis of hyaluronic acid (HA) is presented. HA was hydrolysed in ethanol with added HCl during heterogeneous conditions using varying temperatures (40, 60 and 80 °C) and acid concentrations (0.01, 0.05, and 0
Autor:
Roland Adden, Petra Mischnick, Juergen Engelhardt, Claes Melander, Matthias Knarr, Gunnar Brinkmalm
Publikováno v:
Macromolecular Symposia. 280:36-44
Six methyl cellulose (MC) samples, one with a IDS Of 1.32 and five with a DS between 1.83 and 1.88, were degraded with five different enzymes or enzyme preparations containing endoglucanases. The main goal was to investigate whether enzymes could be
Autor:
Kristoffer Tømmeraas, Claes Melander
Publikováno v:
Carbohydrate Polymers. 74:745-748
Sodium hyaluronate (HA) of various molecular weights (MW) were prepared using acid hydrolysis, heat degradation, ultrasonic degradation, and irradiation on the same production batch. The molecular weights were determined using size exclusion chromato
Publikováno v:
Starch - Stärke. 58:231-242
In this study,a silicon micro immobilised enzyme reactor (mu IMER) has been applied for hydrolysis of maltoheptaose as a model maltodextrin and starch using immobilised otamylase (from Aspergillus oryzae) and glycoamylase (from Aspergillus niger). Th
Publikováno v:
Biomacromolecules. 7:1410-1421
In this part of our studies, dealing with new approaches to the analysis of enzymatically hydrolyzed methyl cellulose, five different enzymes or enzyme preparations containing endoglucanases (from Bacillus agaradhaerens Cel 5A, Trichoderma reesei, Tr
Autor:
Folke Tjerneld, Thomas Laurell, Lo Gorton, Herje Schagerlöf, Claes Melander, Martin Bengtsson
Publikováno v:
Analytica Chimica Acta. 550:182-190
Cellulases hydrolysing the interior parts of cellulose, also called endoglucanases, were immobilised in micro-immobilised enzyme reactors (RIMER) made of porous silicon with the purpose of investigating the use of such mu IMERs for hydrolysis of cell
Autor:
Herje Schagerlöf, Lo Gorton, Claes Melander, Curt T. Reimann, Martin Bengtsson, Dane Momcilovic, Thomas Laurell, Folke Tjerneld, Carina Nilsson
Publikováno v:
Analytical Chemistry. 77:3284-3291
Microchip immobilized enzyme reactors (microIMERs) with immobilized endoglucanases were applied for the hydrolysis of methyl cellulose (MC). MCs of various molecular weights were hydrolyzed using two microIMERs containing immobilized celloendoglucana
Publikováno v:
Journal of Chromatography A. 1029:87-95
A series of celloendoglucanases: Bacillus agaradhaerens Cel 5a, Humicola insolens Cel 5a, H. insolens Cel 7b, H. insolens Cel 45a, Trichoderma reesei Cel 7b, and T. reesei Cel 45a were used to hydrolyse carboxymethylcellulose (CMC) and the hydrolysis
Autor:
Claes Melander, Jesper Larsen
Publikováno v:
Drug development and industrial pharmacy. 38(10)
During routine analysis of an escitalopram tablet formulation, it was seen that there was a systematic deviation between content uniformity (CU - one tablet analysis) and assay analysis (ten pooled tablets). In the presence of the excipients from the
Autor:
Kristoffer Tømmeraas, Claes Melander
Publikováno v:
Biomacromolecules. 9(6)
Hyaluronic acid (HA) was hydrolyzed using varying temperatures (40, 60, and 80 degrees C) and acid concentrations (0.0010, 0.010, 0.10, 0.50, 1.0, and 2.0 M HCl). The degradation process was monitored by determination of weight average molecular weig