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Dual stimuli-sensitive carrageenan-based formulation for additive manufacturing.

Azarmidokht Gholamipour-Shirazi1, Ian T Norton1, Tom Mills1

  • 1School of Chemical Engineering, The University of Birmingham, Edgbaston, Birmingham B15 2TT, UK.

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|August 27, 2021
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Summary
This summary is machine-generated.

This study presents a novel dual-responsive carrageenan hydrogel for controlled release of nutrients, flavors, and drugs. The smart hydrogel demonstrates efficient loading and sustained release triggered by temperature or electric fields.

Keywords:
3D printingDrug deliveryPolyelectrolyteResponsive biopolymerSmart hydrogels

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Area of Science:

  • Materials Science
  • Biotechnology
  • Chemical Engineering

Background:

  • Controlled release systems are crucial for delivering active molecules like nutrients, flavors, and drugs.
  • Carrageenan hydrogels offer biocompatibility and tunable properties for various applications.
  • Developing stimuli-responsive materials enhances delivery efficiency and precision.

Purpose of the Study:

  • To formulate and characterize a dual temperature and electro-responsive hydrogel based on kappa- and iota-carrageenan.
  • To evaluate the hydrogel's potential for efficient food material and drug delivery.
  • To investigate the influence of temperature and electric fields on drug release kinetics.

Main Methods:

  • Hydrogel formulation using kappa- and iota-carrageenan.
  • Microstructural and thermal behavior characterization.
  • In-vitro drug release studies using folic acid as a model drug.

Main Results:

  • The developed carrageenan hydrogel exhibits dual responsiveness to temperature and electric fields.
  • High drug loading capacity was achieved with folic acid.
  • Sustained drug release was observed, controllable by external electric fields or temperature changes.
  • The formulation is compatible with 3D printing feedstocks for advanced applications.

Conclusions:

  • The dual-responsive carrageenan hydrogel is a promising platform for controlled delivery of active molecules.
  • The ability to tune release via temperature or electric fields offers precise control over delivery.
  • This material expands possibilities for 3D printable smart structures in the food and pharmaceutical industries.