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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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