Fresh sweet potatoes contain carbohydrates, protein, crude fiber, fat, and a variety of vitamins. Sweet potatoes can be made from starch, saccharification, brewing and consumption; from sweet potato starch can be a variety of chemical and food raw materials. Here are some methods for making sweet potato products.
Dehydrated sweet potato. Wash → cut → quick cook for 2 minutes → immerse in 0.2% sulfurous acid solution → cook for 1 hour - 2 hours → dry in room at 65°C--75°C.
Quick cook sweet potato. Peeled → soaked in water → cut into 0.6 cubic centimeters of particles → cooked → fast drying, moisture content 10%. Soaked with water when consumed, expanded into cooked potatoes, dry food for travel and light meals.
Sweet potato starch. The starch content in sweet potato is between 13% and -24%, and the starch extraction time should be carried out during the harvesting period. The method is crushing → removing fiber, soluble glycoprotein → rinsing with water → drying.
Soluble starch. The starch obtained above is reacted with acids, bases, oxidants, enzymes, etc. to obtain a starch decomposition product. The method is starch→add 7.5%--15% hydrochloric acid, stir well→place for one week (agitate every few hours)→wash→filter→dry at 40°C--60°C.
dextrin. Refined dried potato powder → Add 2% nitric acid → Stir well → Place it overnight → Transfer to a pan, heat and dry → Crush into fine powder → Transfer to roaster → Bake at 100°C--200°C for several hours → Accelerate cooling, crush Got it.
Sweet potato makes glucose. Starch → Add dilute acid solution and water → Stir into a paste → Heat saccharification, filter → Take filtrate with lime powder neutralize → Heat filter → Add 0.3% activated charcoal decolorization → Concentrate in water bath and evaporate → Take evaporated sugar solution, Plus 0.5% - 1% glucose seed crystals → stir, static crystallization → honey to get crude glucose. The refined glucose method is to take crude glucose and dissolve in water → add 0.3% of activated charcoal, heat and concentrate in a water bath, then crystallize and divide the honey according to the crude method, and wash the crystal, press dry, dry, smash and over Sieved → oral glucose. If take crystallize the glucose again and crystallize twice according to the above method, glucose can be injected.
Sweet potato lactate. Inoculation of lactic acid bacteria with sweet potato to produce calcium lactate. The method is: washing → adding water to boil and paste → adding malt → stirring → inoculating lactic acid bacteria → fermenting → adding lime and neutralizing → standing → taking upper supernatant liquid to evaporate → cooling, crystallizing → washing off pigment → encapsulating into a cake; Pressing → Repetitive washing and pressing operations → Add water, heating to dissolve → Concentrate → Crystallization → Drying Finished product.
Production method of industrial lactic acid: taking calcium lactate crystals → adding water, heating deepening → pouring sulfuric acid dilution liquid → stirring → heating → converting calcium lactate into lactic acid → adding activated carbon to decolorize → heating → filtering → concentrating → filtering to obtain lactic acid.
Sweet potato makes liquor and alcohol. (1) Liquor-making method: Take 20% of potato silk and mix it, boil it, steam it, remove it, dry it, add 4%--6% bran, 1.5%--2% yeast, ferment for 4 days, distill it and distill it. Liquor. (2) Method for the production of alcohol: Wash the broken sweet potato and mix it with 4%--8% glutinous rice, then separate the ingredients, cook, discharge the food, air dry, add 2% malt, mix well, and saccharification in the box for 24 hours. Drying → Adding material → Fermentation → Distillation.
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