Zobrazeno 1 - 10
of 21
pro vyhledávání: '"Yoshitsune Shin-ya"'
Autor:
Yoshitsune Shin-ya, Kyoung-Ae Kim, Moo-Yeal Lee, Parnian Bigdelou, Kyung-Jin Hong, Toshio Kajiuchi
Publikováno v:
Enzyme and Microbial Technology. 109:43-50
Horseradish peroxidase was chemically modified with comb-shaped polymaleic anhydride-alt-1-tetradecene (PMA-TD) in microemulsion systems to produce surface-active peroxidase that has capability to form micellar structures in aqueous solutions and can
Autor:
Kam W. Leong, Ann N. Sieber, Yoshitsune Shin-ya, Daniel D. N. Sun, John P. Kostuik, Jiyoung M. Dang
Publikováno v:
Biomaterials. 27:406-418
Temperature-responsive polymers are attractive candidates for applications related to injectable delivery of biologically active therapeutics, such as stem cells. In this study, we evaluate the potential of thermosensitive hydroxybutyl chitosan (HBC)
Publikováno v:
European Journal of Pharmaceutics and Biopharmaceutics. 59:307-313
This paper describes the pH and temperature effects on drug release from polyelectrolyte complex (PEC) films composed of a cationic polymer, chitosan, and an anionic polymer, polyalkyleneoxide-maleic acid copolymer (PAOMA). In this study, we prepared
Publikováno v:
Journal of Applied Polymer Science. 96:44-50
Chitosan-based polymeric surfactants (CBPSs) were prepared by the partial N-acylation of amine groups on chitosan with acid anhydrides. To apply the CBPSs for the removal of Cr(VI) commonly found in wastewater, a batch test was conducted to evaluate
Publikováno v:
Enzyme and Microbial Technology. 36:147-152
This study is mainly related to the characterization of a chemically modified laccase from the Trametes sp. for use in the oxidation and the removal of phenolics in aqueous systems. An amphiphilic copolymer, polyalkyleneoxide- co -maleic anhydride wa
Publikováno v:
Polymer International. 54:533-536
This study investigated the effect of proteolytic enzymes on in vitro release of ibuprofen from phosphorylated chitosan (PCS) microspheres in simulated gastric fluid (SGF) (pH 1.4) and simulated intestinal fluid (SIF) (pH 7.4). To reduce the enzymati
Publikováno v:
Journal of Chemical Technology & Biotechnology. 80:338-344
Aqueous two-phase partitioning is one of the excellent bioseparation systems for proteins and other biomolecules in water-rich solutions containing polymers or salts. To improve the partition properties of model proteins, chicken egg white (CEW) prot
Publikováno v:
Journal of Membrane Science. 241:347-354
The pH- and temperature-effects on drug permeation from polyelectrolyte complex (PEC) films composed of a cationic polymer, chitosan (CS) and an anionic polymer, polyalkyleneoxide–maleic acid copolymer (PAOMA), have been investigated. In this study
Formulation and characterization of pH sensitive drug carrier based on phosphorylated chitosan (PCS)
Publikováno v:
Carbohydrate Polymers. 53:305-310
The new polyelectrolyte complex gel beads based on phosphorylated chitosan (PCS) were developed for controlled release of ibuprofen in oral administration. The PCS gel beads were readily prepared from soluble phosphorylated chitosan by using an ionot
Publikováno v:
Polymer International. 52:838-842
N-acetylated chitosans (NACs) with different degrees of N-acetylation (DAs) were enzymatically depolymerized at pH 5.1 and 40 °C, and the molecular weight distributions (MWDs) of the depolymerized NACs were then measured by size exclusion chromatogr