Journal
ADVANCED SCIENCE
Volume 9, Issue 4, Pages -Publisher
WILEY
DOI: 10.1002/advs.202104445
Keywords
amyloid fibrils; functional amyloid materials; plant protein; reversible amyloid; sustainability
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Amyloid functional materials derived from oat globulin show diverse functionalities with rich polymorphism, reversible and irreversible fibrillization processes. These materials can be applied in water purification, sensors, and electrodes, with demonstrated sustainability against other protein sources for environmentally-efficient advanced materials and technologies.
Amyloid functional materials from amyloid fibril building blocks, produced in vitro from amyloidogenic natural proteins or synthetic peptides, show diverse functionalities ranging from environmental science and biomedicine, to nanotechnology and biomaterials. However, sustainable and affordable sources of amyloidogenic proteins remain the bottleneck for large-scale applications, and to date, interest remains essentially limited to fundamental studies. Plant-derived proteins would be an ideal source due to their natural abundance and low environmental impact. Hereby oat globulin, the primary protein of oat plant (Avena sativa), is utilized to yield high-quality amyloid fibrils and functional materials based thereof. These fibrils show a rich multistranded ribbon-like polymorphism and a fibrillization process with both irreversible and reversible pathways. The authors furthermore fabricate oat-amyloid aerogels, films, and membranes for possible use in water purification, sensors, and patterned electrodes. The sustainability footprint of oat-amyloids against other protein sources is demonstrated, anticipating an environmentally-efficient platform for advanced materials and technologies.
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