Abstract: Based on the principles of the relationship between protein and acylamino contents of different cereal grains, through repeated experiments, a direct distillation method(DD Method) is found in estimating protein contents of sorghum and maize grains.This method leaves out the digestion procedure in Kjeldahl’s method, so it can cut short the testing time from 2 hours to 4 minutes for each sample.The accuracy and reappearance of DD Method has no significant difference in comparing with the result of Kjeldahl’s Method.Therefore, this method can save much time and chemicals, and avoid toxic gases.It is favourable for screening large amount samples of breeding materials.

Key words: Sorghum, Maize, Protein, Direct distillation method (DD method)

CLC Number: 

• S312