Method for prolonging shelf life of 0.5% starch solution
A technology of starch solution and shelf life, which is applied in the field of chemical and chemical solution preparation, can solve the problems of additional cost, waste of working time, and short service life, and achieve the effects of prolonging service life, saving electricity costs, and reducing labor intensity
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Embodiment 1
[0012] Embodiment 1, the method for prolonging the shelf life of 0.5% starch solution, the steps are as follows,
[0013] 1) Weigh 0.5g of analytically pure soluble starch in a 100mL beaker, weigh 0.05g of analytically pure anhydrous sodium carbonate particles for use, and measure 100mL of distilled water with a graduated cylinder;
[0014] 2) Turn the starch weighed into the beaker into a paste with 20 mL of distilled water;
[0015] 3) Take another 250mL beaker and boil the remaining 80mL of distilled water, pour the pasty starch into the boiling water, boil until clear, and obtain 100mL of 0.5% starch solution;
[0016] 4) After the starch solution in step 3) is cooled to 70° C., add 0.05 g of analytically pure anhydrous sodium carbonate granules to the starch solution, and cool to room temperature for use.
Embodiment 2
[0017] Embodiment 2, the method for prolonging the shelf life of 0.5% starch solution, the steps are as follows,
[0018] 1) Weigh 5g of analytically pure soluble starch in a 1000mL beaker, weigh 0.8g of analytically pure anhydrous sodium carbonate particles for use, and measure 1000mL of distilled water with a graduated cylinder;
[0019] 2) Turn the starch weighed into the beaker into a paste with 200mL of distilled water;
[0020] 3) Take another 1000mL beaker and boil the remaining 800mL of distilled water, pour the pasty starch into the boiling water, boil until clear, and obtain 1000mL of 0.5% starch solution;
[0021] 4) After the starch solution in step 3) is cooled to 80° C., add 0.8 g of analytically pure anhydrous sodium carbonate granules to the starch solution, and cool to room temperature for use.
Embodiment 3
[0022] Embodiment 3, the method for prolonging the shelf life of 0.5% starch solution, the steps are as follows,
[0023] 1) Weigh 5g of analytically pure soluble starch in a 1000mL beaker, weigh 1g of analytically pure anhydrous sodium carbonate particles for use, and measure 1000mL of distilled water with a graduated cylinder;
[0024] 2) Turn the starch weighed into the beaker into a paste with 200mL of distilled water;
[0025] 3) Take another 1000mL beaker and boil the remaining 800mL of distilled water, pour the pasty starch into the boiling water, boil until clear, and obtain 1000mL of 0.5% starch solution;
[0026] 4) After the starch solution in step 3) is cooled to 90° C., add 1 g of analytically pure anhydrous sodium carbonate granules to the starch solution, and cool to room temperature for use.
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