Investigation into the structure of crystalline maltodextrin particles by second harmonic generation microscopy

Elisha Bennett; MacAulay Harvey; Richard Cisek; Danielle Tokarz

doi:10.1364/BOE.481689

Investigation into the structure of crystalline maltodextrin particles by second harmonic generation microscopy

Biomed Opt Express. 2023 Feb 7;14(3):1027-1040. doi: 10.1364/BOE.481689. eCollection 2023 Mar 1.

Authors

Elisha Bennett¹, MacAulay Harvey¹, Richard Cisek¹, Danielle Tokarz¹

Affiliation

¹ Department of Chemistry, Saint Mary's University, 923 Robie Street, Halifax, Nova Scotia, B3H 3C3, Canada.

Abstract

Crystalline maltodextrin particles (CMPs) were investigated using polarization-sensitive second harmonic generation (PSHG) microscopy to determine changes in their crystalline organization due to crystal type (A- and B-type) and hydration for application as starch model systems. Optimization of their synthesis resulted in intense SHG emission, exceeding maize starch granules. PSHG data showed that CMPs have a radial macrostructure with respect to their nucleation regions, fitted ρ values of 2-6, and some similar hydration variations, mimicking starch granules and validating that CMPs may be used as a model system for improved understanding of the SHG properties and applications of starch granules.