Methodological estimation of pore size in hen eggshell membranes.

Area of Science:

• Materials Science
• Biotechnology
• Biophysics

Background:

• Eggshell membranes (ESM) are vital proteinaceous biobarriers in avian development.
• Quantitative data on ESM pore dimensions are currently limited.
• Understanding pore structure is crucial for exploring ESM applications.

Purpose of the Study:

• To determine the effective pore size of chicken eggshell membranes (ESM).
• To validate complementary methodological approaches for pore size estimation.
• To assess the potential of ESM in bioinspired membrane technologies.

Main Methods:

• Pressure-driven water permeation analyzed via the Guéout-Bjerrum-Manegold relation.
• Size-selective filtration using colloidal silica and polystyrene latex particles (14-204 nm).
• Ferry-Renkin model interpretation of particle rejection rates.

Main Results:

• Consistent pore dimension estimates obtained from both permeation and filtration methods.
• Effective pore sizes were determined to be in the range of approximately 100-200 nm.
• Validation of orthogonal methods for characterizing semipermeable biological barriers.

Conclusions:

• The study successfully validated two complementary methods for estimating ESM pore size.
• ESM exhibits pore dimensions suitable for potential applications in filtration and biosafety.
• These findings support the use of ESM as a sustainable biowaste resource for advanced membrane technologies.