This is the exposure draft of revision of GB 5009.270-2016. Compared with GB 5009.270-2016, the major changes including the culture medium Appendix B and Appendix C were added, gas chromatography was modified as the first method and the second method is microorganism, etc.

It is applicable to determination of inositol in food. It includes scope, principle, reagent and materials, apparatus and equipment, analysis steps, formulation of the result, accuracy and others.