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    Home > Chemicals Industry > Chemical Technology > Rapid detection of hanging white lump in rice flour

    Rapid detection of hanging white lump in rice flour

    • Last Update: 2022-03-18
    • Source: Internet
    • Author: User
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    In recent years, many unscrupulous vendors have added hanging white pieces in some food production and processing processes to increase output or improve appearance and taste


    [Detection principle]

    Kit method-hanging white pieces are decomposed into formaldehyde, sodium sulfoxylate and sulfur dioxide in food


    [Reagents and equipment]

    Test material: test tube and combination reagent (Figure 2-2)



    [Operation method and result judgment]

    Sample processing: Crush or cut the sample, take 1g in a test tube, add distilled water to 10mL, shake vigorously 20 times, and leave it for 5min


    Take 1mL of the supernatant after sample treatment to the test tube, add 4 drops of No.


    (Note: The detailed operation should be carried out according to the instructions of the instrument and kit used)

     

     

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