Inspector comparing a kernel of corn to the reference for mold damage.
Most consumers may not realize it, but in many ways grain inspection has not changed much over the years. Even though there are sophisticated scientific tests today to measure moisture, oil, protein and several other intrinsic qualities of grain, the human eye still carries the most weight when judging a grain sample for classification and grade.
To ensure consistency and uniformity throughout the grading process, individual graders need lasting references. Digital media is an important tool used to reduce variability and maintain consistency. Read more »
Broken kernels are indicated above.
With a little help from USDA, consumer-grade photo scanners could revolutionize rice grading.
Consumers much prefer whole kernels of milled rice over broken pieces. Whole kernels offer more consistent cooking qualities and are in many cases considered more visually appealing. As a result, the price paid to a rice producer for a load of rough rice can be impacted by the percentage of broken kernels within a sample of rice after it has been milled.
USDA’s Grain Inspection, Packers and Stockyards Administration is developing software for use with consumer-grade photo scanners to measure the percent of broken kernels in milled rice quickly and accurately. When rough rice is graded in accordance with USDA’s Rice Grading Standards, the percentage of broken kernels within a sample is determined by a trained grader’s visual inspection. Read more »