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Corn is a nutritious cereal, is the world's highest total output of food and feed crops. Nitrogen is an important part of protein, corn nitrogen content will vary due to variety, growth period, growth environment and other factors, in general, nitrogen content between 1.2% ~ 1.6%.

In experiments to determine the nitrogen content of corn, we need to prepare the corn sample, and use Welso ultra-high throughput tissue mill to grind the corn kernels.

Experiment Sample:

Corn Kernels

Instrument:

Welso WTL576 high throughput laboratory mill

Procedure:

In order to ensure the accuracy of the experiment, to form multiple reference groups, the experiment was divided into two groups of grinding.

Experiment:

●Prepare a number of corn kernels and steel balls, and an ultra-high-throughput tissue grinder.

●Put the steel balls and corn kernels into the grinding tube.

●I put the abrasive tube adapter into the instrument and snap it tightly. Set the parameters, run time 45s, frequency 50Hz, cycle 2 times, the instrument starts to run.

●Take the samples after grinding . After passing through the 100 mesh sieve, go ahead with further experiment.

Experiment 2: Different results of T-degree test

●Put different numbers of steel balls and a number of corn kernels into the grinding pipe in turn. Set the parameters, run time 45s, frequency 50Hz, cycle several times.

●Put the abrasive tube adapter into the instrument, tighten the adapter, and tighten the nut. Start the instrument and start running.

●Take the samples after grinding.

Results:

Comparison of first group experiments

Comparison of second group experiments

Notes:

●Make sure samples placing balanced to prevent it from flying out during running.

●During the experiment, the volume of the sample should not exceed one-third of the grinding tube, leaving enough space for the sphere to move fully.

After repeated research and testing, the use of ultra-high-throughput tissue mill to grind corn samples effectively realizes high-throughput grinding, the grinding effect is very good, and the use of disposable centrifuge tubes also effectively avoids cross-contamination of samples, high grinding efficiency and short time.

The food industry is also one of the earliest industries to use grinders as sample preparation. Grinders play a very important role in this field. Hard grains, crisp dried fruits, soft vegetables, etc. can be quickly converted into uniform powder by different types of grinders, providing ideal samples for subsequent chemical analysis, elemental measurement, and nutritional evaluation.