This standard specifies an applicable method for the determination of sorghum tannin content, which is not specific to the determination of a certain type of polyphenols. There is a very good negative correlation between the metabolizable energy of sorghum measured by animal experiments with roosters and the results measured by this method, which proves the effectiveness of this method.
GB/T 15686-2008 Referenced Document
GB 5491 Inspection of grain and oilseeds--Methods for sampling and sample reduction
GB/T 21305 Cereals and cereal products.Determination of moisture content.Routine reference method