Skin Regeneration by Hybrid Carboxyl Methyl Cellulose/Calcium Alginate Fibers Electrospun Scaffold

2021 ◽  
pp. 1-14
Author(s):  
Mohadeseh Rezaie ◽  
Nahid Hassanzadeh Nemati ◽  
Davood Mehrabani ◽  
Ali Komeili
Keyword(s):  
Calcium Alginate ◽  
Methyl Cellulose ◽  
Skin Regeneration ◽  
Electrospun Scaffold ◽  
Alginate Fibers

Cytotoxicity and Antiviral Activity of Calcium Alginate Fibers and Zinc Alginate Fibers

2010 ◽  
Vol 152-153 ◽  
pp. 1475-1478 ◽  
Author(s):  
Ying Gong ◽  
Guang Ting Han ◽  
Xin Ling Li ◽  
Yan Wu ◽  
Yuan Ming Zhang ◽  
...  
Keyword(s):  
Calcium Alginate ◽  
Activity Assay ◽  
Cytotoxic Effects ◽  
African Green Monkey Kidney ◽  
Relative Growth ◽  
Human Cervical Cancer Cell ◽  
Green Monkey ◽  
Alginate Fibers ◽  
Alginate Fibres ◽  
Mtt Assays

The cytotoxicity and anti-influenza virus (IFV) activity of calcium or zinc alginate fibers were investigated to explore the feasibility of them to be used as biomaterials. African Green Monkey kidney cell (Vero) and human cervical cancer cell (Hela) cultured with alginate fibres were used to screen cytotoxic effects. After 48 h, MTT (3-(4,5-dimethyl-2-thiazol)-2,5-diphenyl-2H tetrazolium bromide) assays were performed. Then cytotoxicity was evaluated with six grades according to cell relative growth rate (RGR). In anti-IFV activity assay, IFV were added to all fibers and the Vero cell survival were detected by MTT assays with calculating the percentage of protection. The cytotoxity of calcium alginate fibers on Vero were grade 0 or 1 in contrast to zinc alginate fibers which was grade 0. The cytotoxity of calcium or zinc alginate fibers on Hela were grade 0. Furthermore, partial calcium or zinc alginate fibers could promote Vero or Hela cell growth. In antiviral assay the highest percentage of protection of calcium alginate fibers was 34.42%, while that of zinc alginate fibers was 59.42%. The results showed that calcium or zinc alginate fibers had a good cellular biocompatibility and the large weight zinc alginate fibers had a better anti-IFV activity than calcium alginate fibers, which is potential for tissue engineering.

scholarly journals RECIRCULACIÓN DE LÍQUIDOS RESIDUALES EN LA CONVERSIÓN DE ALGINATO DE CALCIO EN ÁCIDO ALGÍNICO DURANTE EL PROCESO DE PRODUCCIÓN DE ALGINATOS

2005 ◽  
Vol 20 (1-2) ◽  
pp. 1
Author(s):  
Y. E. Rodríguez-Montesinos ◽  
G. Hernández-Carmona ◽  
D. L. Arvizu-Higuera
Keyword(s):  
Calcium Alginate ◽  
Alginic Acid ◽  
Current System ◽  
Macrocystis Pyrifera ◽  
Alginate Production ◽  
Yield And Quality ◽  
Alginate Fibers ◽  
Counter Current ◽  
Very High

Se estudió el efecto de recircular la solución ácida residual en la etapa de conversión de alginato de calcio en ácido algínico, utilizando el alga Macrocystis pyrifera . Los líquidos residuales fueron reciclados en un sistema en contra corriente, con lo cual se logró procesar tres cargas de alginato de sodio con el mismo volumen de agua, permitiendo una conversión efectiva en ácido algínico, con una reducción del 56% en el consumo de agua dulce. Se experimentó un sistema de recirculación en línea (sin reemplazo de agua), este sistema no es recomendable, debido a que la acumulación de calcio en el alginato después de la segunda recirculación, produce una viscosidad aparente muy alta, con un porcentaje de reducció superior al 50%. Se determinó el efecto del número de lavados ácidos del ácido algínico sobre la calidad y rendimiento del alginato obtenido. El tratamiento ácido se llevó a cabo con tres, dos y un lavado. Se concluye que se requieren tres lavados de las fibras de alginato de calcio para lograr una conversión efectiva en ácido algínico, pero el primero y segundo lavado se pueden hacer con ácido reciclado. Es tesis tema representa un ahorro del 66% en el consumo de agua en esta etapa. Recycling of residual liquids from the conversion of calcium alginate to alginic acid during alginate production process The effect of recycling the residual acid solution from the conversion of calcium alginate to alginic acid from the alga Macrocystis pyrifera was studied. The residual liquid was recycled using a counter current system; it was possible to treat three batches of calcium alginate with the same amount of water, with an effective conversion into alginic acid, saving 56% of fresh water. An inline recycling system was experimented (without water replacement). This system is not recommended, because the large increase of calcium in the alginate after the second recycling, produces a very high apparent viscosity. Using this system the viscosity was reduced in more than 50%. We experimented the effect of the number of acid washings of the alginic acid, on the yield and quality of the final alginate. The acid treatment was carried out with three, two and one washing. It was concluded that three acid washings of the calcium alginate fibers are necessary to obtain an effective conversion of calcium alginate to alginic acid, but the first and second washings can be carried out with recycled acid. This system represents a water saving up to 66% in this step.

Benignly-fabricated crosslinked polyethylenimine/calcium-alginate fibers as high-performance adsorbents for effective recovery of gold

2020 ◽  
Vol 252 ◽  
pp. 119389 ◽  
Author(s):  
John Kwame Bediako ◽  
Shuo Lin ◽  
Amit Kumar Sarkar ◽  
Yufeng Zhao ◽  
Jong-Won Choi ◽  
...  
Keyword(s):  
Calcium Alginate ◽  
High Performance ◽  
Alginate Fibers

Adsorption and heat-energy-aid desorption of cationic dye on a new thermo-sensitive adsorbent: Methyl cellulose/calcium alginate beads

2016 ◽  
Vol 56 (12) ◽  
pp. 1382-1389 ◽  
Author(s):  
Zhongmin Li ◽  
Yi Yao ◽  
Guangtao Wei ◽  
Wenyan Jiang ◽  
Yizhi Wang ◽  
...  
Keyword(s):  
Calcium Alginate ◽  
Methyl Cellulose ◽  
Alginate Beads ◽  
Heat Energy ◽  
Cationic Dye ◽  
Calcium Alginate Beads

The Preparation of Fluorescent Fibers from FCNPs and Calcium Alginate

2013 ◽  
Vol 721 ◽  
pp. 63-66
Author(s):  
Yu Xi Zhang ◽  
Zhi Hui Zhao ◽  
Wen Xu ◽  
Ruo Cai Pan ◽  
Yan Zhi Xia
Keyword(s):  
Calcium Alginate ◽  
Carbon Nanoparticles ◽  
Water Solubility ◽  
Fiber Strength ◽  
Wet Spinning ◽  
Blue Color ◽  
One Step ◽  
Alginate Fibers ◽  
Fluorescent Carbon Nanoparticles ◽  
Bright Blue

Stable fluorescent carbon nanoparticles (FCNPs) with excellent water-solubility were prepared firstly by one-step ultrasonic treatment from the blending of glucose and sodium hydroxide. Then, the fluorescence calcium alginate fibers were successfully prepared through wet spinning, using the mixture of FCNPs and sodium alginate solution as the spinning dope. The fluorescent property of FCNPs and fibers were investigated using fluorescence spectrophotometer. Single fiber strength tester was used to measure the strength of the fluorescence fibers. The results showed that both FCNPs and fibers emitted bright blue color under 350nm wavelength UV irradiation. The strength of the fibers was improved when the content of FCNPs in the fibers achieved certain value.

Smart pH response flexible sensor based on calcium alginate fibers incorporated with natural dye for wound healing monitoring

Cellulose ◽  
2020 ◽  
Vol 27 (11) ◽  
pp. 6367-6381 ◽  
Author(s):  
Li Cui ◽  
Jin-jing Hu ◽  
Wei Wang ◽  
Chao Yan ◽  
Yi Guo ◽  
...  
Keyword(s):  
Wound Healing ◽  
Calcium Alginate ◽  
Natural Dye ◽  
Flexible Sensor ◽  
Ph Response ◽  
Wound Healing Monitoring ◽  
Alginate Fibers

Calcium alginate fibers containing metallic nanoadditives

2013 ◽  
Vol 131 (9) ◽  
pp. n/a-n/a ◽  
Author(s):  
Maciej Boguń ◽  
Grzegorz Szparaga ◽  
Paulina Król ◽  
Teresa Mikołajczyk ◽  
Stanisław Rabiej
Keyword(s):  
Calcium Alginate ◽  
Alginate Fibers

Preparation and Properties of Nano-Silica/calcium Alginate Blend Fibers

2011 ◽  
Vol 332-334 ◽  
pp. 321-326
Author(s):  
Feng Jun Wang ◽  
Quan Ji ◽  
Jian Jun Zhang ◽  
Li Wen Tan ◽  
Feng Yu Quan ◽  
...  
Keyword(s):  
Calcium Alginate ◽  
Nano Particles ◽  
Sio2 Content ◽  
Wet Spinning ◽  
Structure And Properties ◽  
Nano Silica ◽  
The Mean ◽  
Alginate Fibers ◽  
Alginate Fiber ◽  
Spinning Condition

Calcium alginate fibers and nano-silica/calcium alginate blend fibers were prepared by the mean of wet spinning at the same spinning condition. The effect of nano-particles SiO2 on the structure and properties of alginate fibers were studied via many tests. The results showed that the tenacity of blend fibers increased with the growth of the content of SiO2 ranging from 1% to 5%, however, the tenacity of fibers became worse when the content of SiO2 was more than 5%. The effect of SiO2 content on hardness and tribological properties of the calcium alginate fiber was studied. The morphologies of the fibers surfaces were examined with a Scanning Electron Microscope (SEM). The result showed that the surface of blend fibers was still smooth when the consent of SiO2 not up to 7%, the best surface was obtained when SiO2 content was 5%. The incorporation of SiO2 also affected the absorption property of alginate fiber and made it decrease with the increase of SiO2 content. The structures of calcium alginate fibers and nano-silica/calcium alginate blend fibers were studied by infrared spectrum.

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