Sweet potato starch to make glucose
Raw material formula dry starch 100 kg hydrochloric acid 770 g water 430 kg sodium carbonate activated carbon
Production Method
1. Preparation of raw materials: pick and wash the white color, dry starch without impurities and no sand, add 430 kg of hydrochloric acid and water to make a slurry. When operating, first take 20% water into the tank, then put the starch into the mixture evenly, then pour all the water into it, continue to stir until there is no powder, no agglomeration, and the paste becomes a paste.
2. Steaming into the tank: The slurry is pumped into the hydrolysis tank. The tank is made of stainless steel, and the enamel-lined iron can also be used. After the slurry is put into the tank, it is placed on the pot and gelatinized at 80 to 100 ° C for 15 minutes, and steam is continuously supplied into the hydrolysis tank. The temperature was raised to 135 ° C and started to stand. After about 20 minutes, from 135 ° C to 168 ° C, it was kept for another 5 minutes. Sampling, checking with absolute alcohol until no precipitation occurs, ie placing the can.
3. Evaporation of liquid: the paste after leaving the tank, when cooled to about 80 ° C, neutralized with sodium carbonate to pH 4.5 to 5, followed by decolorization with 0.3% activated carbon, and filtered with a plate and frame filter press. The glucose supernatant was filtered off. Then, the supernatant is preheated to 50 ° C and sent to an evaporation can, and evaporation is carried out at 55 to 60 ° C to a sugar concentration of 66 to 67% to terminate the evaporation.
4. Crystallization and drying: Put the concentrated sugar liquid into a large tank or a crystallization tank to cool to 40 ° C, add 3% glucose as a seed crystal, and pay attention to heat preservation, so that the sugar liquid gradually drops to 30 ° C within 48 hours. 48 to 72 hours down to room temperature. Stirring slowly during the incubation process allows for better crystallization. After the crystallization is completed, the mother liquor is separated by a spin dryer and washed with a small amount of water. The obtained glucose crystals were placed on a drying bed, baked at 37 ° C for 3 days, and the water content was reduced to 10% or less, which was oral glucose. Finally, it is packaged in a food bag to make a product.
Product features snow white powder, sweet and delicious.
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