METHODS
SHORTCUTS
ABOUT
FAQ
SUBSCRIBE
Methods Home
All Methods
Methods eXtras
Propose a Method
Cite a Method
Technical Committees
Archived Methods
Standards Affiliations
Suppliers Guide
Check Sample Program
Harmonized Methods
AACC International Approved Methods - AACC Method 39-21.01. Near-Infrared Reflectance Method for Whole-Grain Analysis in Soybeans

AACC International Approved Methods

Infrared Analysis

AACCI Method 39-21.01
Near-Infrared Reflectance Method for Whole-Grain Analysis in Soybeans

VIEW METHOD

Objective
Protein, oil, or moisture content determination in soybeans may be ascertained by near-infrared reflectance or transmittance through intact seed either at discrete nonadjoining wavelengths or in a continuous wavelength region. Measurement is based upon a calibration to a suitable standard method (protein by Method 46-11.02, oil by Method 30-25.01, and moisture by Method 44-15.02). Near-infrared absorptions, attributable to combination or overtone vibrational frequencies of NH, CH, OH, and CO, are the primary bases of protein and oil content models.