ISOLATION AND PURIFICATION OF INTRACELLULAR CHITOSANOLYTIC ENZYMES OF Mucor circinelloides
Journal Title: Progress on Chemistry and Application of Chitin and its Derivatives - Year 2008, Vol 0, Issue
Abstract
Application of the authors’ new, two-step (bacitracin affinity chromatography and gel filtration on Sephadex G-100) method of purification of M. circinelloides intracellular enzymes gave the preparation with the relatively high activity of both endo-chitosanases and lipases. Our investigations indicate that this purified preparation contains two proteins with almost the same molecular masses and different activities. We have been trying to separate these proteins and purify them to homogeneity. We also intend to determine their 3 D structures and properties. However, the hitherto published results and our findings suggest that we may also identify the new oligomeric lipase, which efficiently depolymerizes chitozan.
Authors and Affiliations
Katarzyna Struszczyk, Mirosława Szczęsna-Antczak, Marta Walczak, Tadeusz Antczak
SPIN-COATED CHITOSAN ON COPOLYESTER SUBSTRATES
In this work, uniform thin chitosan coatings were spin coated onto copolyester substrate. The use of high concentration acetic acid (50 wt.%) as the chitosan solvent increased the protonation of chitosan amino groups, al...
PREPARATION OF GOLD NANOPARTICLES STABILIZED BY CHITOSAN USING IRRADIATION AND SONICATION METHODS
Gold nanoparticles (AuNPs) were synthesized, in the absence of any reducing agent, using ionizing radiation or ultrasound in aqueous solutions of chloroauric acid (HAuCl4). Chitosan (average molecular weight 158 kDa, deg...
RESEARCH OF THE INFLUENCE OF CHITIN-CONTAINING FOOD ADDITIVES ON THE RHEOLOGICAL PROPERTIES AND BIOLOGICAL VALUE OF MINCED FISH
The problem of the deficiency of dietary fibre and mineral substances in the diet of modern man is well known. This problem is proposed to be solved by making a food product - fishballs - based on a combination of minced...
INVESTIGATION OF FENOFIBRATE DISSOLUTION RATE INCORPORATED ON SOLID DISPERSIONS INTO CHITOSAN
The aim of the study was to investigate the effect of chitosan on the dissolution of fenofibrate incorporated into this polymer carrier. The study investigated fenofibrate in physical mixtures at the drug to polymer rati...
ADSORPTION OF BASIC YELLOW 28 (BY 28) AND ACID YELLOW 23 (AY 23) DYES ONTO CHITIN
The present study investigated the sorption of Basic Yellow 28 (BY 28) and Acid Yellow 23 (AY 23) by chitin flakes. The study determined the influence of pH value on adsorption effectiveness and the adsorption capacity o...