Corrigendum to: Soybean Trypsin Inhibitor Assay: Further Improvement of the Standard Method Approved and Reapproved by American Oil Chemists’ Society and American Association of Cereal Chemists International (Journal of the American Oil Chemists' Society, (2019), 96, 6, (635-645), 10.1002/aocs.12205)

In Liu (2019), some critical errors were published on page 638. First paragraph, left column The final sentence should have been: Thus, for assaying the first dilute sample extract, six test tubes are needed. For assaying additional samples at the same time, the duplicate reference readings and reference blank run for the first sample can be used for TIA calculation of all samples. Calculation and expression of TIA values section Here is the correct text for this section: Under the condition of the 10-mL (full volume) assay, a trypsin unit is defined as an increase of 0.01 absorbance at 410 nm. Under this definition, the trypsin inhibitory activity is expressed in trypsin units inhibited (TUI) or trypsin inhibitor units (TIU) per mg sample and calculated as follows: (Formula presented.) where, (A410R - A410RB) = A410CR, corrected reference reading at A410, (A410S - A410SB) = A410CS, corrected sample reading at A410. (A410CR-A410CS)/A410CR should be in the range of 0.30 to 0.70, that is, 30-70% of trypsin inhibition by a given dilute sample extract. Under the condition of the 5-mL (half volume) assay, a trypsin unit is defined as an increase of 0.02 absorbance at 410 nm (to be explained later). Under this definition, the trypsin inhibitory activity is calculated using the same equation as above for the 10 mL assay, except for replacing x 100 with x 50. We apologize for these errors. © 2019 AOCS