Advanced microscopy techniques for revealing molecular structure of starch granules

Nirmal Mazumder, Suchitta Umashankar, Bharath Ratnakar, K. K. Mahato, Fu Jen Kao

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Starch is a naturally occurring most abundant plant polysaccharide which is major source of carbohydrate and energy in human diet. Starch granules are synthesized in various plant species differ in size, shape and composition. In this research article, molecular structure of from potato, rice and corn were characterized using optical microscopes and scanning electron microscope (SEM). The micro-scale structure of starch granules were observed; the size was in the range of 1 to 100μm, surface topological and composition was visualized with high spatial resolution. The crystalline and amorphous components of starch granules were identified by second harmonic generation (SHG) and coherent anti-Stoke Raman scattering (CARS) microscopy. SHG and CARS signals are generated from non-centrosymmetric and C-H rich regions of starch granules, respectively.

Original languageEnglish
Title of host publicationFrontiers in Optics, FiO 2017
PublisherOSA - The Optical Society
VolumePart F66-FiO 2017
ISBN (Electronic)9781557528209
DOIs
Publication statusPublished - 01-01-2017
EventFrontiers in Optics, FiO 2017 - Washington, United States
Duration: 18-09-201721-09-2017

Conference

ConferenceFrontiers in Optics, FiO 2017
CountryUnited States
CityWashington
Period18-09-1721-09-17

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Mechanics of Materials

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    Mazumder, N., Umashankar, S., Ratnakar, B., Mahato, K. K., & Kao, F. J. (2017). Advanced microscopy techniques for revealing molecular structure of starch granules. In Frontiers in Optics, FiO 2017 (Vol. Part F66-FiO 2017). OSA - The Optical Society. https://doi.org/10.1364/FIO.2017.FTu4B.4