Investigation of germination and aging in Moravian III barley grain by nuclear magnetic resonance.
High-resolution, solid-state 1H nuclear magnetic resonance (NMR) techniques are used for the first time to study germination in imbibed Moravian III barley grains. Whereas magic-angle spinning 1H NMR spectra reveal the water and lipid components in barley grains, combined rotation and multiple-pulse spectroscopy techniques provide 1H NMR spectra of grains that reveal the protein and carbohydrate as well as the water and lipid components. Spectra of grains are compared with spectra of model compounds to verify assignments. 1H T1 and T2 measurements using magic-angle spinning only and combined rotation and multiple-pulse spectroscopy techniques provide information about molecular mobility within the grains during inhibition. Some grains were subjected to artificial aging conditions. 1H NMR spectral comparisons are made between normal, viable grains and artificially aged grains.
Ridenour
C F
CF
Department of Chemistry, Colorado State University, Fort Collins 80523, USA.
Xiong
J
J
Maciel
G E
GE
D055592:Biophysical Phenomena; D001703:Biophysics; D002241:Carbohydrates / Q000737:chemistry; D018525:Germination; D001467:Hordeum / Q000737:chemistry* / Q000196:embryology / Q000254:growth & development; D006859:Hydrogen / Q000737:chemistry; D008055:Lipids / Q000737:chemistry; D009682:Magnetic Resonance Spectroscopy; D010940:Plant Proteins / Q000737:chemistry; D011522:Protons; D012639:Seeds / Q000737:chemistry / Q000254:growth & development; D013997:Time Factors; D014867:Water / Q000737:chemistry
D002241:Carbohydrates; D008055:Lipids; D010940:Plant Proteins; D011522:Protons; D014867:Water; D006859:Hydrogen