Study on Freezing Resistance of Alginate Gel

2021 ◽  
Vol 10 (02) ◽  
pp. 87-92
Author(s):  
晓亮 邢
Keyword(s):  
Freezing Resistance ◽  
Alginate Gel

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

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.

scholarly journals Cavernous Branched Nerve Regeneration Using Non-Tubular Artificial Nerve Sheets Using Freeze-Dried Alginate Gel Combined With Polyglycolic Acid Mesh in a Rat Model

2021 ◽  
Vol 9 (1) ◽  
pp. 100308
Author(s):  
Shintaro Narita ◽  
Takashi Obara ◽  
Namiko Ishikawa ◽  
Yoshihisa Suzuki ◽  
Tomonori Habuchi
Keyword(s):  
Nerve Regeneration ◽  
Rat Model ◽  
Polyglycolic Acid ◽  
Alginate Gel ◽  
Freeze Dried ◽  
Polyglycolic Acid Mesh

Uptake and Recovery of Ruthenium by Alginate Gel Polymers

2002 ◽  
Vol 39 (6) ◽  
pp. 655-660 ◽  
Author(s):  
Hitoshi MIMURA ◽  
Hiroshi OHTA ◽  
Kenichi AKIBA ◽  
Yoshio ONODERA
Keyword(s):  
Alginate Gel ◽  
Gel Polymers

Low temperature acclimation and legacy effects of summer water deficits in olive freezing resistance

2021 ◽  
Author(s):  
Nadia S Arias ◽  
Fabián G Scholz ◽  
Guillermo Goldstein ◽  
Sandra J Bucci
Keyword(s):  
Plant Growth ◽  
Water Deficit ◽  
Low Temperatures ◽  
Cell Damage ◽  
Leaf Water ◽  
Leaf Nitrogen Content ◽  
Legacy Effects ◽  
Freezing Resistance ◽  
Lower Growth ◽  
Water Deficits

Abstract Low temperatures and drought are the main environmental factors affecting plant growth and productivity across most of the terrestrial biomes. The objective of this study was to analyze the effects of water deficits before the onset of low temperatures in winter to enhance freezing resistance in olive trees. The study was carried out near the coast of Chubut, Argentina. Plants of five olive cultivars were grown out-door in pots and exposed to different water deficit treatments. We assessed leaf water relations, ice nucleation temperature (INT), cell damage (LT50), plant growth and leaf nitrogen content during summer and winter in all cultivars and across water deficit treatments. Leaf INT and LT50 decreased significantly from summer to winter within each cultivar and between treatments. We observed a trade-off between resources allocation to freezing resistance and vegetative growth, such that an improvement in resistance to sub-zero temperatures was associated to lower growth in tree height. Water deficit applied during summer increased the amount of osmotically active solutes and decreased the leaf water potentials. This type of legacy effects persists during the winter after the water deficit even when treatment was removed, because of natural rainfalls.

Subtle influence on alginate gel properties through host–guest interactions between covalently appended cyclodextrin and adamantane units

2021 ◽  
Author(s):  
Gabriela Ionita ◽  
Elena Irina Popescu ◽  
Ludmila Aricov ◽  
Sorin Mocanu ◽  
Iulia Matei ◽  
...  
Keyword(s):  
Daily Life ◽  
Structural Features ◽  
Gel Properties ◽  
Alginate Gel ◽  
Alginate Gels

Alginate gels have been explored in relevant domains for daily life such as pharmaceutics and environmental. The structural features of alginate allow functionalization which, in extension, can modify the gel...

scholarly journals Antimicrobial Activity of Roselle-capped​ Silver​ Nanochip on Aggregatibacter actinomycetemcomitans

2021 ◽  
Author(s):  
Sirorat Wacharanad ◽  
Puncharee Thatree ◽  
Punchaya Yiemwattana ◽  
Penpitcha Paoprajak ◽  
Pimchanok Ngamsangiam ◽  
...  
Keyword(s):  
Nitrate Solution ◽  
Synthesis Method ◽  
Antimicrobial Effect ◽  
Silver Nitrate Solution ◽  
Aggregatibacter Actinomycetemcomitans ◽  
Microwave Assisted Synthesis ◽  
Alginate Gel ◽  
Diffusion Technique ◽  
Inhibition Zones ◽  
Time Kill

Abstract Objectives This article aimed to study the effects of the​ roselle-capped​ silver​ nanochip​ ​(SNP-Ro​ chip)​ against Aggregatibacter actinomycetemcomitans, and the toxicity of this film on fibroblast cells to develop this SNP-Ro chip into a local chemical for the treatment of periodontitis in the future. Materials and Methods Using a microwave-assisted synthesis method, silver​ nanoparticles (SNPs) were prepared from a silver nitrate solution and roselle extract as a reducing and capping agent. Then, SNP-Ro chips were fabricated by mixing a solution of SNP-Ro with alginate gel. The antimicrobial effect of the synthesized SNP-Ro chips was performed by the disc diffusion technique and time kill assay. The cytotoxic effect was also determined by the MTS assay. Statistical Analysis One-way analysis of variance (ANOVA) and Scheffe’s method were used to analyze the data for this experiment. Results All three ratios of the SNP-Ro chip produced inhibition zones ranging between 18.75 ± 2.08 and 19.03 ± 2.25 mm. In studying the killing time, the three groups of the SNP-Ro chips completely eradicated A. actinomycetemcomitans within 180 minutes. The percentage of the viable SNP-Ro chip-treated human gingival fibroblasts (HGFs) were significantly increased when compared with the alginate chip-treated cells (p < 0.05). Conclusion This study developed a new method for the deposition of SNPs in alginate gel to make a thin small chip for the sustained release of the SNPs in a periodontal lesion. Therefore, the SNP-Ro chip has the potential to be developed as an adjunctive locally delivered antimicrobial agent in periodontal therapy.

Immobilization of glucose oxidase within calcium alginate gel capsules

2001 ◽  
Vol 36 (7) ◽  
pp. 601-606 ◽  
Author(s):  
A Blandino ◽  
M Macı́as ◽  
D Cantero
Keyword(s):  
Glucose Oxidase ◽  
Calcium Alginate ◽  
Alginate Gel ◽  
Calcium Alginate Gel

Porous bioceramic bead prepared by calcium phosphate with sodium alginate gel and PE powder

2008 ◽  
Vol 28 (7) ◽  
pp. 1149-1158 ◽  
Author(s):  
Y.C. Fu ◽  
M.L. Ho ◽  
S.C. Wu ◽  
H.S. Hsieh ◽  
C.K. Wang
Keyword(s):  
Calcium Phosphate ◽  
Sodium Alginate ◽  
Alginate Gel ◽  
Porous Bioceramic
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