Behavior of alginate gel beads containing chitosan salt prepared with water-soluble vitamins

2002 ◽  
Vol 53 (2) ◽  
pp. 249-251 ◽  
Author(s):  
Yoshifumi Murata ◽  
Yukari Kontani ◽  
Hiroko Ohmae ◽  
Susumu Kawashima
Keyword(s):  
Water Soluble ◽  
Alginate Gel ◽  
Gel Beads ◽  
Chitosan Salt

The fixation of a water-soluble drug in calcium-induced alginate gel beads and the release profiles from the vehicle.

1997 ◽  
Vol 12 (1) ◽  
pp. 49-55 ◽  
Author(s):  
Yoshifumi Murata ◽  
Norie Katayana ◽  
Takashi Kajita ◽  
Etsuko Miyamoto ◽  
Susumu Kawashima
Keyword(s):  
Water Soluble ◽  
Alginate Gel ◽  
Gel Beads ◽  
Water Soluble Drug ◽  
Release Profiles

Preparation of alginate gel beads containing chitosan salt and their function

1999 ◽  
Vol 176 (2) ◽  
pp. 265-268 ◽  
Author(s):  
Y. Murata ◽  
S. Toniwa ◽  
E. Miyamoto ◽  
S. Kawashima
Keyword(s):  
Alginate Gel ◽  
Gel Beads ◽  
Chitosan Salt

Preparation of Zinc Phthalocyanine-Calcium Alginate Gel Beads and its Use for Photocatalytic Oxidation Decolorization of Methyl Orange

2014 ◽  
Vol 809-810 ◽  
pp. 252-257
Author(s):  
Min Hong Xu ◽  
Hai Feng Chen ◽  
Guo Xiang Pan ◽  
Pei Song Tang
Keyword(s):  
Methyl Orange ◽  
Hydroxyl Radicals ◽  
Calcium Alginate ◽  
Photocatalytic Oxidation ◽  
Water Soluble ◽  
Zinc Phthalocyanine ◽  
Alginate Gel ◽  
Gel Beads ◽  
Calcium Alginate Gel ◽  
Free Hydroxyl

A supported photocatalyst zinc phthalocyanine-calcium alginate gel beads (Zn-MPc-SA) was prepared through the mixture of water-soluble zinc phthalocyanine (Zn-MPc) and sodium alginate was drip into 5% (w/v) CaCl2 solution. The Zn-MPc-SA was characterized by IR. Methyl orange was selected as a substrate to investigate the photocatalytic activity of Zn-MPc-SA. The results shown that: the surplus of methyl orange was 22.05% at the condition of pH 3, methyl orange 10mg/L 25mL, H2O2 50μL, Zn-MPc-SA 0.1460g and visible light irradiation for 3h. Zn-MPc-SA remains efficient in repetitive test cycles with no obvious degradation of catalytic activity. The reaction mechanism was likely to involve free hydroxyl radicals.

scholarly journals Drug Release Profile from Calcium-Induced Alginate-Phosphate Composite Gel Beads

2009 ◽  
Vol 2009 ◽  
pp. 1-4 ◽  
Author(s):  
Yoshifumi Murata ◽  
Youko Kodama ◽  
Takashi Isobe ◽  
Kyoko Kofuji ◽  
Susumu Kawashima
Keyword(s):  
Calcium Phosphate ◽  
Drug Release ◽  
Release Profile ◽  
Water Soluble ◽  
Drug Release Profile ◽  
Alginate Gel ◽  
Gel Beads ◽  
Composite Gel ◽  
The Matrix

Calcium-induced alginate-phosphate composite gel beads were prepared, and model drug release profiles were investigated in vitro. The formation of calcium phosphate in the alginate gel matrix was observed and did not affect the rheological properties of the hydrogel beads. X-ray diffraction patterns showed that the calcium phosphate does not exist in crystalline form in the matrix. The initial release amount and release rate of a water-soluble drug, diclofenac, from the alginate gel beads could be controlled by modifying the composition of the matrix with calcium phosphate. In contrast, the release profile was not affected by the modification for hydrocortisone, a drug only slightly soluble in water.

Nitrification and Autotrophic Denitrification in Calcium Alginate Beads

1987 ◽  
Vol 19 (1-2) ◽  
pp. 175-182 ◽  
Author(s):  
Z. Lewandowski ◽  
R. Bakke ◽  
W. G. Characklis
Keyword(s):  
Calcium Carbonate ◽  
Calcium Ions ◽  
Continuous Flow ◽  
Calcium Alginate ◽  
Microbial Respiration ◽  
Flow System ◽  
Alginate Beads ◽  
Alginate Gel ◽  
Gel Beads ◽  
Calcium Alginate Gel

Immobilization of nitrifiers and autotrophic denitrifiers (Thiobacillus denitrificans) within calcium alginate gel was demonstrated. Calcium carbonate reagent was immobilized along with bacteria as the stabilizing agent. Protons released as a result of microbial respiration reacted with calcium carbonate producing calcium ions which internally stabilized the calcium alginate gel. The microbially active gel beads were mechanically stable and active for three months in a continuous flow system without addition of calcium.

Decolourisation of dyes under electro-Fenton process using Fe alginate gel beads

2012 ◽  
Vol 213-214 ◽  
pp. 369-377 ◽  
Author(s):  
E. Rosales ◽  
O. Iglesias ◽  
M. Pazos ◽  
M.A. Sanromán
Keyword(s):  
Fenton Process ◽  
Alginate Gel ◽  
Gel Beads

The spatial distribution of calcium in alginate gel beads analysed by synchrotron-radiation induced X-ray emission (SRIXE)

1997 ◽  
Vol 297 (2) ◽  
pp. 101-105 ◽  
Author(s):  
Beathe Thu ◽  
Gudmund Skjåk-Bræk ◽  
Fulvio Micali ◽  
Franco Vittur ◽  
Roberto Rizzo
Keyword(s):  
Spatial Distribution ◽  
Synchrotron Radiation ◽  
X Ray ◽  
Alginate Gel ◽  
Gel Beads ◽  
Radiation Induced
Sign in / Sign up

Export Citation Format

Share Document