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Immobilization of Multi-biocatalysts in Alginate Beads for Cofactor Regeneration and Improved Reusability

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Oyster shell based indirect carbonation integrated with probiotic encapsulation.

Seonmi Shin^1,2, Youjeong Lee^1,2, Myoung-Jin Kim^3,4

¹Department of Environmental Engineering, Korea Maritime and Ocean University, Busan, Republic of Korea.

Scientific Reports

|October 21, 2024

Summary

Recycling oyster shells for probiotic encapsulation offers an eco-friendly solution. This novel method enhances probiotic survival through gastrointestinal fluids, addressing waste and delivery challenges.

Keywords:

Calcium carbonate Encapsulation Indirect carbonation Oyster shells Probiotics

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Area of Science:

Environmental Science
Biotechnology
Materials Science

Background:

Oyster shell waste contributes to marine pollution.
Indirect carbonation for waste valorization is effective but costly.
Probiotic encapsulation is crucial for therapeutic efficacy but faces delivery challenges.

Purpose of the Study:

To develop a cost-effective method for recycling oyster shells.
To encapsulate probiotics within calcium carbonate derived from oyster shells.
To evaluate the performance and survivability of encapsulated probiotics.

Main Methods:

Indirect carbonation of oyster shells to produce calcium carbonate.
Encapsulation of probiotics within the synthesized calcium carbonate.
Confocal laser scanning microscopy to confirm probiotic survival.
In vitro testing of probiotic survivability through simulated gastrointestinal and bile fluids.

Main Results:

Successful encapsulation of probiotics within oyster shell-derived calcium carbonate.
Substantial survival rate of encapsulated probiotics confirmed by microscopy.
High survivability of probiotics demonstrated when exposed to gastrointestinal and bile fluids.

Conclusions:

Oyster shells are a viable and eco-friendly precursor for probiotic encapsulation.
This integrated approach overcomes economic barriers of indirect carbonation.
The method offers a sustainable solution for industrial waste recycling and improved probiotic delivery.