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ARS Home » Research » Publications at this Location » Publication #112818
Title: PROGRESS IN RICE ANALYSIS

Author
item Barton Ii, Franklin
item Himmelsbach, David

Submitted to: Near Infrared Transmittance Calibration Standardization Meeting
Publication Type: Abstract Only
Publication Acceptance Date: 5/16/2000
Publication Date: N/A
Citation: N/A

Interpretive Summary:

Technical Abstract: The study of rice starch properties have always been hampered by an inaccurate assay of starch because of the extremely close association of protein in the starch/protein matrix. The best procedure for unambiguously determining the amount of amylose and amylo-pectin is by solid state nuclear magnetic resonance spectroscopy. The ratio of 1-4 to 1-6 linked carbohydrates will allow the determination of the amount of amylose and th alpha and beta 1-4 ratio will determine chain length. These data correlated to the NIR and Raman spectroscopy will give us better models for amylose content than previously possible with starch/iodine titrations. The spectral responses in the NIR and Raman regions will be correlated to RVA curves to ascertain the structural features within rice flour that are important at any given time in the RVA analysis.