How to make homemade lotus root starch

Lotus root powder is made by grinding lotus roots into powder after drying them. It can be eaten directly with water, but the quality of the lotus root powder depends on the lotus roots we choose. We need to buy fresh lotus roots, then wash them, peel them, grind them into a paste, filter the lotus root slurry, and then precipitate and dry them to make lotus root powder. Friends who like to eat lotus root powder can learn how to make it, but pay attention to the preservation of the lotus root powder.

How to make handmade lotus root starch

1. Wash

Purchase fresh lotus root. The quality of fresh lotus root determines the quality of lotus root powder. Use a rag, straw, etc. to wash off the mud adhering to the surface of the fresh lotus root, then cut off the lotus root nodes and rotten lotus root tips, scrape off the dirty spots on the surface, and use chopsticks to clean the holes in the lotus root segments that are blocked by mud.

2. Grinding

Rub the washed lotus root segments on a wooden board into a paste, or chop them into pieces by hand or with a shredder, then grind them into slurry on a stone mill. When grinding, add water while lifting the lotus root shreds to make the ground slurry uniform and fine. If conditions permit, use a beater or grinder to process it into lotus root pulp.

3. Filter

Pour the lotus root pulp into a white cloth bag, put a wooden frame on the wooden basin or tank, place the white cloth bag on the wooden frame, and then press it down with wooden boards and stones to separate the lotus root pulp from the lotus root pulp residue. Press lightly at first and then press hard. Don't press too quickly or too hard to avoid breaking the cloth bag. Take out the pressed lotus root residue, add appropriate amount of clean water and stir, then pour it into a cloth bag, filter it again to remove the lotus root residue in the bag.

4. Sink

After fully stirring the lotus root pulp, let it stand for more than 5 hours, remove the supernatant (which can be used as fertilizer) and the precipitated powder is the wet lotus root powder.

5. Sunbathing

First, scrape off the scum on the surface of the wet lotus root powder, then cut the wet lotus root powder into slices or crush it and spread it on a container to dry in the sun until it crumbles to pieces when touched. It is best to keep the moisture content within 20%, and the drying yard should be protected from wind, sand or impurities that may affect the quality. After drying, you get lotus root powder with high purity that can be stored for a long time.

What is the modern production process of lotus root starch?

1. Raw material selection

In order to ensure the powder yield and the quality of lotus root powder, the raw materials selected during processing should be fresh and mature lotus roots with neat appearance, uniform thickness, normal color, smooth and clean individual surface and no obvious defects.

2. Cleaning

The main purpose of cleaning is to remove the mud and sand on the surface of the raw materials. It is a key step in the processing of lotus root powder and is related to the purity and taste of lotus root powder.

3. Crushing and filtering

The purpose of crushing is to destroy the organizational structure of the material so that the tiny lotus root starch particles can be smoothly disintegrated and separated from the lotus root. Starch extraction, also known as pulp-residue separation or separation, is a key link in starch processing and directly affects the starch extraction rate and starch quality.

4. Sand removal

The main purpose is to further remove the sediment in the material.

5. Concentration

In order to completely separate the non-starch components in lotus root starch, the starch slurry needs to be concentrated so that the starch milk concentration discharged from the last stage cyclone reaches 23Be', and the whiteness and purity meet the standards.

6. Dehydration

The concentrated starch slurry still contains a lot of water, and the water in the material needs to be further removed before entering the drying stage. For dehydration, a three-legged dehydrator can be used, and a scraper centrifuge can be used for large factories.

7. Drying

Drying should be carried out by an air flow dryer, which uses a high-speed hot air flow to suspend the wet starch in it and dry it during the flow of the air flow. It has the characteristics of high heat transfer coefficient, large heat transfer area and short drying time.

8. Cooling

After lotus root starch is dried, the temperature is relatively high. In order to ensure the viscosity of the starch, the starch needs to be cooled quickly after drying.

9. Packaging

The cooled lotus root powder enters the finished product sieve and enters the final packaging process while ensuring the product fineness and output.