Curcumin-Loaded Chitosan Alginate Sponge for Wound Healing

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Solution Overview

Problem

Curcumin's low aqueous solubility and instability in biological environments limit its bioavailability and efficacy in wound healing, necessitating a delivery system that can sustain its release and protect it from degradation.

Innovation Solution

A curcumin-loaded chitosan alginate sponge is prepared through emulsification with oleic acid, which stabilizes curcumin and facilitates its sustained release, utilizing the biocompatibility and biodegradability of chitosan and alginate to enhance wound healing.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If curcumin is used directly for wound healing, then anti-inflammatory and antioxidant effects are achieved, but low aqueous solubility and instability limit bioavailability and efficacy

Engineering Contradiction:

ImprovebioavailabilityVSAvoidstability

Core Design Contradiction:

ReliabilityVSStability of the object's composition

Solution Approach 1:

Oleic acid is used as an intermediary substance to solubilize curcumin in the aqueous chitosan-alginate matrix. The oleic acid forms an emulsion with curcumin, creating a stable dispersion that enhances bioavailability while protecting curcumin from degradation in the biological environment

Inventive Principle:

Principle #24Intermediary (Mediator)

Solution Approach 2:

The invention creates a composite delivery system combining curcumin, oleic acid, chitosan, and alginate. This composite sponge structure integrates the hydrophobic curcumin-oleic acid complex within the hydrophilic chitosan-alginate matrix, providing both solubility enhancement and stability protection

Inventive Principle:

Principle #40Composite materials

2Reliability

If curcumin is delivered without encapsulation, then direct anti-inflammatory action is possible, but severe biodegradation and instability in biological pH reduce therapeutic effectiveness

Engineering Contradiction:

Improvetherapeutic effectivenessVSAvoidbiodegradation resistance

Core Design Contradiction:

ReliabilityVSStability of the object's composition

Solution Approach 1:

The chitosan-alginate sponge acts as a flexible matrix that encapsulates and protects curcumin. The porous structure of the sponge provides physical protection while allowing controlled release, shielding curcumin from direct exposure to degrading conditions in the biological environment

Inventive Principle:

Principle #30Flexible shells and thin films

Solution Approach 2:

Oleic acid serves as a protective intermediary that stabilizes curcumin against biodegradation. The oleic acid-coated curcumin particles are less susceptible to enzymatic degradation and pH-induced instability, maintaining therapeutic effectiveness

Inventive Principle:

Principle #24Intermediary (Mediator)

3Reliability

If curcumin is applied topically, then antioxidant protection against oxidative damage is achieved, but low solubility in aqueous solutions limits delivery and distribution

Engineering Contradiction:

Improveantioxidant efficacyVSAvoidaqueous solubility

Core Design Contradiction:

ReliabilityVSQuantity of substance

Solution Approach 1:

Oleic acid acts as a solubility-enhancing intermediary that allows curcumin to disperse in the aqueous chitosan-alginate matrix. This emulsion system dramatically increases the effective concentration of curcumin that can be delivered topically while maintaining antioxidant efficacy

Inventive Principle:

Principle #24Intermediary (Mediator)

Solution Approach 2:

The porous sponge structure provides a large surface area and interconnected pores that facilitate the distribution of curcumin throughout the wound bed. The porosity allows aqueous penetration while carrying the oleic acid-curcumin complex to areas of oxidative damage

Inventive Principle:

Principle #31Porous materials

Applied Scientific Principles

This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.

Function Achieved in This Case

The curcumin-loaded sponge demonstrates improved bioavailability and sustained release of curcumin, accelerating wound healing by reducing inflammation and oxidative damage, with enhanced anti-inflammatory and antioxidant effects.

Implementation Method 1

incorporating curcumin in a fluid phase of oleic acid; subjecting the mixture to a step of emulsification with chitosan solution

Methodology Applied

Scientific EffectEmulsification: Emulsion

Implementation Method 2

Lyophilizing the final emulsion by freeze drying to produce curcumin loaded AC sponge

Methodology Applied

Scientific EffectFreeze drying: Freeze Drying

Implementation Method 3

emulsification with chitosan solution for few minutes homogenizing the resultant solution with alginate solution

Methodology Applied

Scientific EffectElectrostatic interaction: Electrostatics

Data Source

PatentUS9649403B2Process for preparing curcumin encapsulated chitosan alginate sponge useful for wound healing

Publication Date: 2017.05.16 INST OF LIFE SCI

AI summary

A process for preparing curcumin encapsulated chitosan alginate sponge comprising the steps of: incorporating curcumin in a fluid phase of oleic acid; subjecting the mixture to a step of emulsification with chitosan solution by homogenization; emulsifying the resultant solution with alginate solution by homogenization; lyophilizing the final emulsion by freeze drying to produce curcumin loaded AC sponge.