Controlled release of insecticide carbaryl from sodium alginate, sodium alginate/gelatin, and sodium alginate/sodium carboxymethyl cellulose blend beads crosslinked with glutaraldehyde

2005 ◽  
Vol 99 (4) ◽  
pp. 1310-1319 ◽  
Author(s):  
Nuran Işiklan
Keyword(s):  
Controlled Release ◽  
Sodium Alginate ◽  
Carboxymethyl Cellulose ◽  
Sodium Carboxymethyl Cellulose

scholarly journals A study of the effects of sodium alginate and sodium carboxymethyl cellulose on the growth of the common duckweed (Lemna minor L.)

2021 ◽  
pp. 82-82
Author(s):  
Bianca Boros ◽  
Nathalie Grau ◽  
Adriana Isvoran ◽  
Adina Datcu ◽  
Nicoleta Ianovici ◽  
...  
Keyword(s):  
Sodium Alginate ◽  
Carboxymethyl Cellulose ◽  
Water Solubility ◽  
Lemna Minor ◽  
Sodium Carboxymethyl Cellulose ◽  
Log P ◽  
Growth Inhibitory ◽  
Wide Range ◽  
The Common ◽  
High Doses

Sodium alginate (ALG) and sodium carboxymethyl cellulose (CMC) are two polysaccharides that have a wide range of applications which could lead to accidental pollution of the environment, making the assessment of their potential ecotoxicity imperative. The present study assesses the ALG and CMC effects on the growth response of the common duckweed (Lemna minor L.). The results emphasize that both polysaccharides can be classified as practically nontoxic based on their EC50 values, with ALG having a relatively higher toxicity compared to CMC. It was also observed that high doses of 1, 5 and 10 mg mL-1 of the two polysaccharides produced growth inhibitory effects against common duckweed. The toxicity of biopolymers against common duckweed, measured as EC50 values, seems to be correlated to the hydrophobicity of the monomers building the polymer. The EC50 values increase linearly with the increase of water solubility (log S) values and decrease linearly with the lipophilicity (log P) values.

scholarly journals Development, Characterization, Stability and Bioaccessibility Improvement of 7,8-Dihydroxyflavone Loaded Zein/Sophorolipid/Polysaccharide Ternary Nanoparticles: Comparison of Sodium Alginate and Sodium Carboxymethyl Cellulose

Foods ◽  
2021 ◽  
Vol 10 (11) ◽  
pp. 2629
Author(s):  
Yufeng Chen ◽  
Jingchong Peng ◽  
Yueqi Wang ◽  
Daniel Wadhawan ◽  
Lijun Wu ◽  
...  
Keyword(s):  
Sodium Alginate ◽  
Carboxymethyl Cellulose ◽  
Electrostatic Interactions ◽  
Storage Stability ◽  
Amorphous State ◽  
Sodium Carboxymethyl Cellulose ◽  
X Ray Diffraction ◽  
Scanning Calorimetry ◽  
In Vitro Bioaccessibility

In this study, two polysaccharides [sodium alginate (ALG) and sodium carboxymethyl cellulose (CMC)] were selected to establish zein/sophorolipid/ALG (ALG/S/Z) and zein/sophorolipid/ALG (CMC/S/Z) nanoparticles to encapsulate 7,8-dihydroxyflavone (7,8-DHF), respectively. The results showed that polysaccharide types significantly affected performance of ternary nanoparticles, including CMC/S/Z possessed lower polydispersity index, particle size and turbidity, but higher zeta potential, encapsulation efficiency and loading capacity compared to ALG/S/Z. Compared to zein/sophorolipid nanoparticles (S/Z), both ALG/S/Z and CMC/S/Z had better stability against low pH (pH 3~4) and high ionic strengths (150~200 mM NaCl). Hydrophobic effects, electrostatic interactions and hydrogen bonding were confirmed in ternary nanoparticles fabrication via Fourier-transform infrared spectroscopy. Circular dichroism revealed that CMC and ALG had no evident impact on secondary structure of zein in S/Z, but changed surface morphology of S/Z as observed by scanning electron microscope. Encapsulated 7,8-DHF exhibited an amorphous state in ternary nanoparticles as detected by X-ray diffraction and differential scanning calorimetry. Furthermore, compared to S/Z, ALG/S/Z, and CMC/S/Z remarkably improved the storage stability and bioaccessibility of 7,8-DHF. CMC/S/Z possessed a greater storage stability for 7,8-DHF, however, ALG/S/Z exhibited a better in vitro bioaccessibility of 7,8-DHF. This research provides a theoretical reference for zein-based delivery system application.

scholarly journals Chemical characterization, release, and bioactivity of Eucalyptus camaldulensis polyphenols from freeze-dried sodium alginate and sodium carboxymethyl cellulose matrix

2020 ◽  
Vol 4 (4) ◽  
pp. 203-212
Author(s):  
Ozioma Forstinus Nwabor ◽  
Sudarshan Singh ◽  
Dwi Marlina ◽  
Supayang Piyawan Voravuthikunchai
Keyword(s):  
Sodium Alginate ◽  
Carboxymethyl Cellulose ◽  
Food Systems ◽  
Antioxidant Activities ◽  
Chemical Characterization ◽  
Eucalyptus Camaldulensis ◽  
Ethanolic Extract ◽  
Antimicrobial Activities ◽  
Sodium Carboxymethyl Cellulose ◽  
Freeze Dried

Abstract Crude ethanolic extract of Eucalyptus camaldulensis was encapsulated with sodium alginate–sodium carboxymethyl cellulose (CMC) using freeze-drying techniques. The microcapsules were characterized for particle size, morphology, physicochemical parameters, and micromeritics properties. Antioxidant and antimicrobial activities of the microcapsules were also demonstrated. Results revealed an irregular-shaped microparticles with a mean diameter ranging from 6.7 to 26.6 µm. Zeta potential and polydispersity index ranged from −17.01 to 2.23 mV and 0.34 to 0.49, respectively. Percentage yield ranged between 70.4 and 81.5 per cent whereas encapsulation efficiency ranged between 74.2 ± 0.011 and 82.43 ± 0.77 per cent. Swelling index and solubility varied inversely with extract concentration, with a range of 54.4%–84.0% and 18.8%–22.2%, respectively. Antioxidant activities varied directly with the concentration of the extract. Minimum inhibitory and minimum bactericidal concentrations of the microcapsules against Gram-positive foodborne pathogens ranged from 0.19 to 3.12 and 0.19–12.25 mg/ml, respectively. The Higuchi model indicated a time-dependent, delayed, and regulated release of polyphenols at 37°C. The results suggested that alginate–CMC possessed good encapsulant properties that preserved the bioactive extract, thus might be employed for application of natural products in food systems.

Controlled Release of Cefixime using Sodium Carboxymethyl Cellulose Polymer

2019 ◽  
Vol 12 (9) ◽  
pp. 4073
Author(s):  
Kawther Abd Alwahid Abdulhameed ◽  
Nadeerah Abdulhameed Salih
Keyword(s):  
Controlled Release ◽  
Carboxymethyl Cellulose ◽  
Sodium Carboxymethyl Cellulose

Semi-interpenetrating polymer network microspheres of gelatin and sodium carboxymethyl cellulose for controlled release of ketorolac tromethamine

2006 ◽  
Vol 65 (3) ◽  
pp. 243-252 ◽  
Author(s):  
Ajit P. Rokhade ◽  
Sunil A. Agnihotri ◽  
Sangamesh A. Patil ◽  
Nadagouda N. Mallikarjuna ◽  
Padmakar V. Kulkarni ◽  
...  
Keyword(s):  
Controlled Release ◽  
Carboxymethyl Cellulose ◽  
Polymer Network ◽  
Interpenetrating Polymer Network ◽  
Sodium Carboxymethyl Cellulose ◽  
Ketorolac Tromethamine
Sign in / Sign up

Export Citation Format

Share Document