Comparison of Three Methods to Determine the Degree of Substitution of Quinoa and Rice Starch Acetates, Propionates, and Butyrates: Direct Stoichiometry, FTIR, and 1H-NMR

比较三种测定藜麦和大米淀粉乙酸酯、丙酸酯和丁酸酯取代度的方法：直接化学计量法、FTIR 和 1H-NMR