TY - JOUR
T1 - An overview of instrumented indentation technique for the study of micromechanical properties in food
T2 - A case study on bean seed coat
AU - Nicolás-García, Mayra
AU - Arzate-Vázquez, Israel
AU - Perea-Flores, María de Jesús
AU - Méndez-Méndez, Juan Vicente
AU - Perucini-Avendaño, Madeleine
AU - Gómez-Patiño, Mayra Beatriz
AU - Dávila-Ortiz, Gloria
N1 - Publisher Copyright:
© 2021 IAgrE
PY - 2021/4
Y1 - 2021/4
N2 - Food texture features depend on the structure–property-functionality relationship and mechanical properties. This work describes the application of the instrumented indentation technique (IIT) to determine the micromechanical properties of the bean seed coat evaluating different indentation loads. The bean seed coat's multilayer structure is composed of a cuticle (C), palisade cells (PAL), subepidermal pillar cells (SE), and spongy parenchyma cells (SP). Values of Ra and Rq revealed a rough surface due to the waxes and minerals present in the C. In the indentation tests, the C was indented at loads below 20 mN exhibiting values of hardness (H) and elastic modulus (E) of 383 ± 58 MPa and 11 ± 5 GPa, respectively. For PAL, when the load increased to 400 mN, H and E decreased to 198 ± 29 MPa and 3 ± 0.8 GPa, indenting 10% of the total thickness of the seed coat (103 ± 9 μm). The values of H and E decreased as the applied indentation load increased. This variability is influenced by the composition (waxes, lignin, condensed tannins, and CaOx crystals) and the effect of the layer-substrate system of multilayer structure of the seed coat.
AB - Food texture features depend on the structure–property-functionality relationship and mechanical properties. This work describes the application of the instrumented indentation technique (IIT) to determine the micromechanical properties of the bean seed coat evaluating different indentation loads. The bean seed coat's multilayer structure is composed of a cuticle (C), palisade cells (PAL), subepidermal pillar cells (SE), and spongy parenchyma cells (SP). Values of Ra and Rq revealed a rough surface due to the waxes and minerals present in the C. In the indentation tests, the C was indented at loads below 20 mN exhibiting values of hardness (H) and elastic modulus (E) of 383 ± 58 MPa and 11 ± 5 GPa, respectively. For PAL, when the load increased to 400 mN, H and E decreased to 198 ± 29 MPa and 3 ± 0.8 GPa, indenting 10% of the total thickness of the seed coat (103 ± 9 μm). The values of H and E decreased as the applied indentation load increased. This variability is influenced by the composition (waxes, lignin, condensed tannins, and CaOx crystals) and the effect of the layer-substrate system of multilayer structure of the seed coat.
KW - Bean seed coat
KW - Elastic modulus
KW - Hardness
KW - Instrumented indentation technique
KW - Micromechanical properties
UR - http://www.scopus.com/inward/record.url?scp=85101807539&partnerID=8YFLogxK
U2 - 10.1016/j.biosystemseng.2021.02.006
DO - 10.1016/j.biosystemseng.2021.02.006
M3 - Artículo
AN - SCOPUS:85101807539
SN - 1537-5110
VL - 204
SP - 377
EP - 385
JO - Biosystems Engineering
JF - Biosystems Engineering
ER -