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Soybean Flour (SP0810)


When analyzing saccharides in food, it is necessary to remove the substances besides saccharides before the analysis. This procedure is called as sample pretreatment.
Here, the analysis result of saccharides in food using SUGAR SP0810 is shown together with the sample pretreatment procedure.

(Sample pretreatment for soybean flour)
1) Put the soybean flour in a beaker and add pure water to make 50-fold solution.
2) Extract the substances from the paste into water using an ultrasonic vibrator for 30 minutes.
3) Perform ultrafiltration (mw : 10,000).
4) Pass through a 0.45μm membrane filter before injecting into HPLC.

Sample : Soybean Flour
1. Stachyose
2. Raffinose
3. Sucrose
4. Maltose
5. Glucose

Columns      : Shodex SUGAR SP-G 6B (6.0mmI.D. x 50mm) + SP0810 (8.0mmI.D. x 300mm) x 2
Eluent       : H2O
Flow rate    : 0.4mL/min
Detector     : Shodex RI
Column temp. : 80°C

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