AOAC Official Method 937.06 Gums in Soft Curd Cheese
Final Action
(Not applicable to detection of alginates.)
A. Reagents
(a) Benedict solution (qualitative).—Dissolve 17.3 g sodium citrate and 10 g anhydrous Na2CO3 in ca 80 mL hot H2O; dissolve 1.73 g CuSO4×5H2O in 10 mL H2O. Filter alkaline citrate solution, add CuSO4 solution slowly with constant stirring, and dilute with H2O to 100 mL.
(b) Trichloroacetic acid (TCA) solution.—(1) 50%. (2) 10%. Prepare just before use from nonhydrolyzed reagent.
