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Bacterial Cellulose Cultivations Containing Gelatin Form Tunable, Highly Ordered, Laminae Structures with Fourfold
Anna-Christina Amason1,2, Aditya Meduri1,3, Shivani Rao1,2
1Center for Biotechnology and Interdisciplinary Studies, Department of Biological Sciences, Rensselaer Polytechnic Institute, 1623 15th Street, Troy, New York 12180, United States.
ACS Omega
|January 2, 2023
Summary
Adding gelatin to bacterial cellulose (BC) cultivation media enhances BC
Area of Science:
- Biomaterials Engineering
- Microbiology
- Materials Science
Background:
- Bacterial cellulose (BC) possesses unique properties but requires morphological control for specific applications.
- Gelatin's influence on BC matrix formation and fermentation efficiency is not fully understood.
Purpose of the Study:
- To investigate the effects of gelatin concentration on BC morphology, mechanical properties, and production efficiency.
- To establish a method for tuning BC characteristics through media manipulation.
Main Methods:
- Gelatin was added to BC cultivation media at varying concentrations (0.1-7.5 wt %).
- BC matrix characteristics (morphology, crystallinity, mechanical properties, water holding capacity) were analyzed.
- Fermentation production efficiency was quantified.
Main Results:
- Gelatin addition (up to 5 wt %) led to larger pore sizes and unidirectional lamina morphology in BC.
- Mechanical properties (specific modulus, specific strength) improved with gelatin up to 5 wt %.
- Productivity increased nearly 4-fold, and water holding capacity tripled with optimal gelatin concentrations.
Conclusions:
- Gelatin addition effectively manipulates BC morphology and enhances key properties.
- This method offers a controllable approach to producing tailored bacterial cellulose for diverse applications.
