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Main Title: Structure-function relationships in Macadamia integrifolia seed coats – fundamentals of the hierarchical microstructure
Author(s): Schüler, Paul
Speck, Thomas
Bührig-Polaczek, Andreas
Fleck, Claudia
Type: Article
Language Code: en
Abstract: The shells/coats of nuts and seeds are often very hard to crack. This is particularly the case with Macadamia seed coats, known to exhibit astoundingly high strength and toughness. We performed an extensive materials science characterization of the complex hierarchical structure of these coats, using light and scanning electron microscopy in 2D as well as microCT for 3D characterization. We differentiate nine hierarchical levels that characterize the structure ranging from the whole fruit on the macroscopic scale down to the molecular scale. From a biological viewpoint, understanding the hierarchical structure may elucidate why it is advantageous for these seed coats to be so difficult to break. From an engineering viewpoint, microstructure characterization is important for identifying features that contribute to the high strength and cracking resistance of these objects. This is essential for revealing the underlying structure-function-relationships. Such information will help us develop engineering materials and lightweight-structures with improved fracture and puncture resistance.
Issue Date: 7-Aug-2014
Date Available: 3-May-2018
DDC Class: 570 Biowissenschaften; Biologie
600 Technik, Technologie
Subject(s): Macadamia integrifolia
seed coats
hierarchical microstructure
structure-function relationship
Journal Title: PLOS ONE
Publisher: PLOS
Publisher Place: San Francisco
Volume: 9
Issue: 8
Article Number: e102913
Publisher DOI: 10.1371/journal.pone.0102913
Page Start: 1
Page End: 14
ISSN: 1932-6203
Appears in Collections:FG Werkstofftechnik » Publications

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